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0-4562, Corrosion Resistance of Grouted Post-Tensioning Systems

1.

[2014] ... Research Performed by: Center for Transportation Research; Research Supervisors: Dr. John E. Breen, Dr. Michael E. Kreger; Researchers: Andrew L. Kilduff [and eight others] · "Although the vast majority of post-tensioned bridges in the United States have performed satisfactorily, corrosion problems on a small number of

4562 PSR phase 2 [CTR] ... 0-4562-S2 ... Project Summary, 4562

Full-text Link:
http://tti.tamu.edu/documents/0-4562-S.pdf
69 KB
______________________________________________________________________________________________________

Corrosion Resistance Recommendations from Long-Term Exposure Testing of Post-Tensioning Systems

2.

2013 ... A.L. Kilduff [and four others] · Results from two sets of full-scale post-tensioned specimens after four and six years of highly aggressive exposure tests are summarized. The study was funded to assess corrosion resistance of both the current state of the industry and possible future developments in strands, ducts, couplers,

4562-5 F [CTR] ... FHWA/TX-13/0-4562-5F

Full-text Link:
http://library.ctr.utexas.edu/ctr-publications/0-4562-5f.pdf
4.5 MB
______________________________________________________________________________________________________

Evaluation of Corrosion Resistance of Improved Post-tensioning Materials after Long-term Exposure Testing

3.

2011 ... G.E. McCool, M.E. Ahern, J.E. Breen, S.L. Wood · Ten full-scale post-tensioned beam specimens were subject to 4 years of aggressive cyclic ponded saltwater exposure. Three of those specimens were additionally exposed to saltwater spray once per month on one anchorage face. Non-destructive monitoring was conducted

4562-4 [CTR] ... FHWA/TX-11/0-4562-4

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_4562_4.pdf
9.7 MB
______________________________________________________________________________________________________

Comparative Study of Mechanical and Corrosion Resistance Properties of Bridge Post-Tensioning Strands

4.

2011 ... R. D. Kalina, S. Mac Lean, J. E. Breen · This report summarizes the exploration of new methods of protection for the strands used in post-tensioning of concrete bridges. Companion small-scale tests of strand or grout and strand were conducted. The tests included mechanical testing to determine modulus of elasticity, yield

4562-3 [CTR] ... FHWA/TX-11/0-4562-3

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_4562_3.pdf
2.5 MB
______________________________________________________________________________________________________

Durability Evaluation of Post-Tensioned Concrete Beam Specimens After Long-Term Aggressive Exposure Testing

5.

2007 ... G. P. Turco, R. M. Salas, A. J. Schokker, J. S. West, M. E. Kreger and J. E. Breen · This report focuses on the forensic analysis and evaluation of large-scale post-tensioned beam specimens after nearly 8 years of extremely aggressive exposure testing. The research was funded jointly by both FHWA and TxDOT. The relationship

4562-2 [CTR] ... FHWA/TX-08/0-4562-2

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_4562_2.pdf

______________________________________________________________________________________________________

Evaluate the Effect of Allowing the Use of 12 [square root of] f (c') to Load Rate Prestressed Concrete Bridges

6.

2006 ... RS: Sharon L. Wood; Researcher: John Breen · In Texas, the procedures in the AASHTO Manual for Condition Evaluation of Bridges (MCEB) are used to determine the load rating of existing structures. A large number of prestressed concrete bridges that were constructed in the 1950s and 1960s have load ratings that fall below the

1895-S [CTR] ... PSR 0-1895-S ... Project Summary Report, 0-1895

Full-text Link:
http://ftp.dot.state.tx.us/pub/txdot-info/rti/psr/1895.pdf

______________________________________________________________________________________________________

Bridge Slab Behavior at Expansion Joints

7.

2006 ... Christin J. Coselli [and six others] · The primary objective of this research study was to evaluate the behavior and capacity of the IBTS and alternate 8 in. UTSE (Uniform Thickness Slab End) details at expansion joints, especially on skewed ends of bridge slabs. The two full-scale CIP (cast-in-place) specimens, 0o and 45o

4418-1 [CTR] ... FHWA/TX-05/0-4418-1

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_4418_1.pdf

______________________________________________________________________________________________________

Design for Shear in Reinforced Concrete Using Strut-and-Tie Models

8.

2006 ... Michael D. Brown [and five others] · The design of reinforced concrete members for shear was studied. Both strut-and-tie models (STM) and sectional methods were examined. Initially, the response of isolated struts was observed. Various layout of reinforcement were used within the isolated struts. Three series of deep beam tests

4371-2 [CTR] ... 0-4371-2

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_4371_2.pdf

______________________________________________________________________________________________________

Development of New Bridge Deck Details at Expansion Joints

9.

2005 ... C.J. Coselli [and six others] · The Texas Department of Transportation (TxDOT) currently uses, for most of its bridges, the “IBTS” standard detail for bridge slab ends at expansion joints (Figure 1). That detail has enabled TxDOT to eliminate the use of diaphragms at slab ends by increasing the thickness at slab ends. Slab ends are

4418-S [CTR] ... PSR 0-4418-S ... Project Summary Report, 0-4418

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_4418_S.pdf

______________________________________________________________________________________________________

Summary: Factors Affecting Bond and Friction Losses in Multi-Strand Post-Tensioning Tendons Including the Effect of Emulsifiable Oils

10.

2005 ... T. Luthi [and four others] · · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).

4562 PSR phase 1 [CTR] ... PSR 0-4562-S1 ... Project Summary Report, 0-4562

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_4562_S1.pdf

______________________________________________________________________________________________________

Factors Affecting Bond and Friction Losses in Multi-Strand Post-Tensioning Tendons Including the Effects of Emulsifiable Oils

11.

2005 ... T. Luthi [and four others] · Emulsifiable oils are often used in post-tensioned construction to reduce friction losses and to provide temporary corrosion protection for tendons during the period of time between stressing and grouting. In the past, oils were flushed from the ducts with water prior to grouting. This practice often

4562-1 [CTR] ... 0-4562-1

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_4562_1.pdf

______________________________________________________________________________________________________

Allowable Design Release Stresses for Pretensioned Concrete Beams

12.

2004 ... Alfredo Castro [and four others] · A research program was conducted in Ferguson Structural Engineering Laboratory at The University of Texas at Austin to determine whether elevated concrete stresses at extreme flexural fibers, relative to current allowable stresses, can be applied to pretensioned concrete beams at transfer. A

4086-2 [CTR] ... 0-4086-2

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_4086_2.pdf

______________________________________________________________________________________________________

Durability Design of Post-Tensioned Bridge Substructure Elements : Summary

13.

2004 ... Ruben M. Salas [and four others] · · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).

1405-S [CTR] ... PSR 0-1405-S; 0-1405-S ... Project Summary Report, 0-1405

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_1405_S.pdf
1.5 MB
______________________________________________________________________________________________________

Conclusions, Recommendations, and Design Guidelines for Corrosion Protection of Post-Tensioned Bridges

14.

2004 ... R.M. Salas [and four others] · The effectiveness of cement grout in galvanized or polyethylene ducts, the most widely used corrosion protection system for multistrand bonded post-tensioned concrete tendons, has been under debate due to several reported examples of significant tendon corrosion damage. While experience in

1405-9 [CTR] ... 0-1405-9

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_1405_9.pdf
3 MB
______________________________________________________________________________________________________

Evaluation of Alternative Materials to Control Drying-Shrinkage Cracking in Concrete Bridge Decks

15.

2003 ... Kevin Folliard [and four others] · In the United States, restrained shrinkage cracking of concrete bridge decks is a significant durability problem. The issues affecting restrained shrinkage cracking arise from design and construction practices, as well as material properties. The mechanisms of drying, autogenous, and carbonation

4098-4 [CTR] ... 0-4098-4

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_4098_4.pdf

______________________________________________________________________________________________________

Anchorage Behavior of Headed Reinforcement : Part A Lap Splices : Part B Design Provisions and Summary

16.

2003 ... M.K. Thompson [and four others] · The behavior of headed reinforcement in concrete was studied using full-scale tests of lap splices. The mechanics of the anchorage behavior were observed and recorded to evaluate the manner in which the capacity of a headed bar is developed. The measured data were compared to the results

1855-3 [CTR] ... 0-1855-3

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_1855_3.pdf

______________________________________________________________________________________________________

Long-Term Post-Tensioned Beam Exposure Test Specimens : Final Evaluation

17.

2003 ... R.M. Salas [and five others] · In the last few years, the effectiveness of cement grout in galvanized or polyethylene ducts, the most widely used corrosion protection system for multistrand bonded post-tensioned concrete tendons, has been under debate, due to significant tendon corrosion damage, several reported failures of

1405-7 [CTR] ... 0-1405-7

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_1405_7.pdf
7 MB
______________________________________________________________________________________________________

Long-Term Post-Tensioned Column Exposure Test Specimens : Final Evaluation

18.

2003 ... R.M. Salas [and four others] · Post-tensioned concrete piers or columns may be exposed to very severe environments affecting their long-term durability. Two main exposure conditions are of special interest: partially submerged structures in sea water and structures exposed to deicing salts. The durability study of post-tensioned

1405-8 [CTR] ... 0-1405-8

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_1405_8.pdf
3.5 MB
______________________________________________________________________________________________________

Anchorage of Headed Reinforcement in CCT Nodes

19.

2003 ... M.K. Thompson [and four others] · The behavior of headed reinforcement in concrete was studied using full-scale tests of CCT nodes. The mechanics of the anchorage behavior were observed and recorded to evaluate the manner in which the capacity of a headed bar is developed. The measure data were used to evaluate existing

1855-2 [CTR] ... FHWA/TX-04/ 1855-2

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/1855_2.pdf
4.8 MB
______________________________________________________________________________________________________

Behavior and Design of Headed Reinforcement in Concrete Structures

20.

2002 ... M.K. Thompson [and three others] · · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).

1855-S [CTR] ... PSR 0-1855-S ... Project Summary Report, 0-1855

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_1855_S.pdf

______________________________________________________________________________________________________

Anchorage Behavior of Headed Reinforcement : Literature Review

21.

2002 ... M.K. Thompson, J.O. Jirsa, J.E. Breen, and R.E. Klingner · The findings of a literature review of topics related to the anchorage of headed reinforcement are presented. The topics are grouped in three broad categories: conventional anchorage of reinforcement, anchorage of headed reinforcement, and a review of strut-and-tie

1855-1 [CTR] ... FHWA/TX-0-1855-1

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/1855_1.pdf
2.1 MB
______________________________________________________________________________________________________

Feasibility of Utilizing High-Performance Lightweight Concrete in Pretensioned Bridge Girders and Panels

22.

2002 ... G.S. Sylva III, J.E. Breen, and N.H. Burns · The use of high performance lightweight concrete in Texas prestressed concrete bridges has potential advantages and disadvantages. Advantages include reduced dead load, crane capacity, and shipping costs. Disadvantages include higher prestress losses, deflections, camber, and

1852-2 [CTR] ... FHWA/TX-03/ 1852-2

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/1852_2.pdf
1.5 MB
______________________________________________________________________________________________________

Final Evaluation of Corrosion Protection for Bonded Internal Tendons in Precast Segmental Construction

23.

2002 ... R.M. Salas [and four others] · In 1993, aware of unfortunate experiences in Europe in early non-epoxy segmental joints, Research Project 0-1264 was started with the main purpose of investigating the corrosion protection of internal tendons at segmental joints. This testing program was transferred to Project 0-1405 for long-

1405-6 [CTR] ... 0-1405-6

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/1405_6.pdf
2.9 MB
______________________________________________________________________________________________________

Structural Lightweight Concrete Prestressed Girders and Panels

24.

2002 ... D.B. Thatcher [and five others] · This report explores the uses of high performance lightweight concrete in pretensioned girders and deck panels. | A summary of pertinent literature on application of lightweight concrete in bridge applications is given. The results indicate a number of successful applications as well as a few cautions.

1852-1 [CTR] ... FHWA/TX-02/ 1852-1

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/1852_1.pdf
3.98 MB
______________________________________________________________________________________________________

Development of a Precast Bent Cap System

25.

2001 ... Eric E. Matsumoto [and five others] · Improved speed of construction and economy can be achieved through the use of precast bridge substructures. As a step in the advancement of precast bridge substructures, a precast bent cap system is developed for nonseismic regions, including a design methodology, construction

1748-2 [CTR] ... FHWA/TX-0-1748-2

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_1748_2.pdf
38.3 MB
______________________________________________________________________________________________________

Summary: Development of a Precast Bent Cap System

26.

2001 ... Eric E. Matsumoto [and four others] · · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).

1748-S [CTR] ... PSR 0-1748-S ... Project Summary Report, 0-1748

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/1748_S.pdf
512 KB
______________________________________________________________________________________________________

Summary: High Performance Lightweight Concrete Prestressed Girders and Panels

27.

2001 ... J.A. Heffington [and five others] · The purpose of this summary report is to present the findings of a study on high performance lightweight concrete (f'c > 6000psi) to be used in pretensioned girders and deck panels. The major components of the study are as follows: 1) literature search; 2)lightweight concrete mix design

1852-S [CTR] ... PSR 0-1852-S ... Project Summary Report, 0-1852

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/1852_S.pdf

______________________________________________________________________________________________________

Long-Term Post-Tensioned Beam and Column Exposure Test Specimens : Experimental Program

28.

1999 ... J.S. West [and four others] · The use of post-tensioning in bridges can provide durability and structural benefits to the system while expediting the construction process. When post-tensioning is combined with precast elements, traffic interference can be greatly reduced through rapid construction. Post-tensioned concrete

1405-3 [CTR] ... 0-1405-3

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_1405_3.pdf
14 MB
______________________________________________________________________________________________________

Interim Conclusions, Recommendations, and Design Guidelines for Durability of Post-Tensioned Bridge Substructures

29.

1999 ... A.J. Schokker [and three others] · The use of post-tensioning in bridges can provide durability and structural benefits to the system while expediting the construction process. When post-tensioning is combined with precast elements, traffic interference can be greatly reduced through rapid construction. Corrosion protection of

1405-5 [CTR] ... 0-1405-5

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/1405_5.pdf
1.4 MB
______________________________________________________________________________________________________

Development of High Performance Grouts for Bonded Post-Tensioned Structures

30.

1999 ... A. J. Schokker [and three others] · The use of post-tensioning in bridges can provide durability and structural benefits to the system while expediting the construction process. When post-tensioning is combined with precast elements, traffic interference can be greatly reduced through rapid construction. Post-tensioned concrete

1405-2 [CTR] ... 0-1405-2

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/1405_2.pdf
1.3 MB
______________________________________________________________________________________________________

Corrosion Protection for Bonded Internal Tendons in Precast Segmental Construction

31.

1999 ... by J.S. West, R.P. Vignos, J.E. Breen and M.E. Kreger · The use of post-tensioning in bridges can provide durability and structural benefits to the system while expediting the construction process. When post-tensioning is combined with precast elements, traffic interference can be greatly reduced through rapid construction. Post-

1405-4 [CTR] ... 0-1405-4

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1405-4.pdf
3.09 MB
______________________________________________________________________________________________________

Measurement-Based Performance Evaluation of a Segmental Concrete Bridge

32.

1999 ... by Rodney T. Davis [and four others] · Construction of around 10km of the US 183 elevated highway in Austin, Texas, using precast segmental post-tensioned construction provided a unique opportunity to investigate many aspects of segmental bridge technology. The project included balanced cantilever erection, span-by-span

1404-3 [CTR] ... 0-1404-3F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1404-3f.pdf
11.1 MB
______________________________________________________________________________________________________

A Precast Substructure Design for Standard Bridge Systems

33.

1999 ... by John L. Billington, Robert W. Barnes and John E. Breen · The proposed substructure system described in this report has been developed to improve the aesthetics and reduce the construction time of the support structures for standard bridges. The form of the proposed substructures is highly attractive, and is a distinct

1410-2 [CTR] ... 0-1410-2F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1410-2f.pdf
12.1 MB
______________________________________________________________________________________________________

State-of-the-Art Report about Durability of Post-Tensioned Bridge Substructures

34.

1999 ... J.S. West [and four others] · Durability design requires an understanding of the factors influencing durability and the measures necessary to improve durability of concrete structures. The objectives of this report are to: (1.) Survey the condition of bridge substructures in Texas; (2.) Provide background material on bridge

1405-1 [CTR] ... 0-1405-1

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/1405_1.pdf
5.5 MB
______________________________________________________________________________________________________

Indications About Thermal Gradient Magnitudes from Field Studies of Concrete Box Girder Bridges

35.

1998 ... M. Keith Thompson, John E. Breen and Michael E. Kreger · Three years of continuous thermal data from three concrete box girder bridges and one concrete box girder pier are compiled into a single study. The data is used to draw conclusions about trends in thermal gradient magnitudes and shapes. The maximum gradients from

1820-S [CTR] ... FHWA/TX-99/1820-S ... Project Summary Report, 0-1820

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1820-s.pdf
1.72 MB
______________________________________________________________________________________________________

Measured Behavior and Thermal Gradients in Innovative Bridge Piers

36.

1998 ... by Valerie A. Andres [and four others] · Construction of the US 183 elevated highway in Austin, Texas, provided a unique opportunity to investigate the behavior of two types of innovative concrete piers. Tied Y-shaped piers were used to support mainlane spans. They were cast in situ with steel pipes for the tensile ties between the

1404-1 [CTR] ... FHWA/TX-98/1404-1

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1404-1.pdf
4.20 MB
______________________________________________________________________________________________________

Measured Behavior of a Curved Precast Segmental Concrete Bridge Erected by Balanced Cantilevering

37.

1998 ... by Keith Thompson, Rodney T. Davis, John E. Breen and Michael E. Kreger · A five-span continuous precast segmental horizontally curved concrete bridge erected in balanced cantilever as part of the US Highway 183 interchange with Interstate Highway 35 in Austin, Texas was instrumented with concrete strain gauge devices,

1404-2 [CTR] ... FHWA/TX-98/1404-2

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1404-2.pdf
4.59 MB
______________________________________________________________________________________________________

Behavior and Design of Large Structural Concrete Bridge Pier Overhangs

38.

1997 ... by Scott D. Armstrong [and four others] · In designing large cantilever bent caps for use on recent projects under current AASHTO design specifications, designers were faced with considerable uncertainties. Questions arose when designers attempted to satisfy both serviceability and strength requirements for a series of

1364-1 [CTR] ... FHWA/TX-99/1364-1

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1364-1.pdf
5.44 MB
______________________________________________________________________________________________________

Investigation of Corrosion Protection Systems for Bridge Stay Cables

39.

1995 ... by H.R. Hamilton III, J.E. Breen and K.H. Frank · The use of cable-stayed bridges in medium- and long-span applications in the United States has increased significantly in the past ten years. Of paramount importance with this type of bridge is the protection of the stay cables from corrosive elements. An extensive survey, reported

1264-3 F [CTR] ... Report 0-1264-3F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1264-3f.pdf
7.57 MB
______________________________________________________________________________________________________

Anchorage Zone Reinforcement for Post-Tensioned Concrete Girders

40.

1994 ... J.E. Breen [and four others] · · Publ. by: Transportation Research Board (TRB).

NCHRP Report 356 ... NCHRP Report 356 ... Report (National Cooperative Highway Research Program -

Full-text Link:
No online resource supplied by publisher
______________________________________________________________________________________________________

Reducing Friction Losses in Monolithic and Segmental Bridge Tendons : Interim Report

41.

1993 ... R.T. Davis [and three others] · In the construction of post-tensioned bridges, the increased use of precast technology has resulted in somewhat tighter radii of curvature and greater total angle changes. Both factors make friction losses during stressing higher and somewhat less predictable. Various design

1264-2 [CTR] ... FHWA/TX-94+1264-2

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1264-2.pdf
2.92 MB
______________________________________________________________________________________________________

Measurement Based Revisions for Segmental Bridge Design and Construction Criteria

42.

1993 ... C.L. Roberts, J.E. Breen and M.E. Kreger · This report is the second and final in a series reporting the field study of several spans of the San Antonio "Y" project. The San Antonio "Y" project is a major urban viaduct comprising segmental concrete box girders post-tensioned with a mix of internal and external tendons and erected

1234-3 [CTR] ... FHWA/TX-94+1234-3F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1234-3f.pdf
6.54 MB
______________________________________________________________________________________________________

Evaluation of Agents for Lubrication and Temporary Corrosion Protection of Post-Tension Tendons

43.

1993 ... W.M. Kittleman [and four others] · In the construction of post-tensioned bridges, the increased use of precast technology has resulted in somewhat tighter radii of curvature and greater total angle changes. Both factors make friction losses during stressing higher and somewhat less predictable. In both cast-in-situ and precast

1264-1 [CTR] ... FHWA/TX-94+1264-1

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1264-1.pdf
2.19 MB
______________________________________________________________________________________________________

Detailing for Structural Concrete

44.

1993 ... K. Bergmeister [and three others] · This report is the final report in a series which investigates the applications of strut-and-tie modelling for typical details in structural concrete bridges. It summarizes the state of the art of strut-and-tie modelling and presents specific recommendations for choosing the critical dimensions and

1127-3 F [CTR] ... FHWA/TX-93+1127-3F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1127-3f.pdf
7.23 MB
______________________________________________________________________________________________________

Fretting Fatigue in External Post-Tensioned Tendons

45.

1992 ... by K.K. Ryals, J.E. Breen and M.E. Kreger · External post-tensioning tendons are frequently used in the construction of multiple span box girder bridges. They occur particularly frequently in long bridges erected using span-by-span construction as in elevated urban freeways and over water viaducts. In addition, they have been

1211-1 F [CTR] ... FHWA/TX-93+1211-1F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase1/1211-1f-ctr.pdf
4.9 MB
______________________________________________________________________________________________________

Bonding of External Tendons at Deviators

46.

1991 ... B.J. Radloff, Michael E. Kreger and John E. Breen · This report is the first in a series outlining a major study of techniques for improving the ductility and strength of post-tensioned concrete box girder bridges through improved bonding of external tendons. It presents a detailed state-of-the-art report concerning bonding of tendons

1209-1 [CTR] ... FHWA/TX-91+1209-1

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase1/1209-1-ctr.pdf
5.8 MB
______________________________________________________________________________________________________

An Investigation of Strut-and-Tie Models for Dapped Beam Details

47.

1991 ... D. L. Barton [and four others] · The objective of the test program undertaken in this study was to develop experimental data for defining various elements of strut-and-tie models. The data was used extensively in establishing design guidelines for details of structural reinforced concrete (Report 1127-3F). The experimental

1127-1 [CTR] ... 0-1127-1

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1127-1.pdf
9.63 MB
______________________________________________________________________________________________________

Enhancing the Strength and Ductility of Post-Tensioned Segmental Box-Girder Bridges

48.

1991 ... by A.N.A. Hindi, M.E. Kreger and J.E. Breen · An investigation was conducted to determine the effect of using external tendons, discretely bonded at intermediate diaphragms, and supplemental, grouted internal tendons on the strength and ductility of post-tensioned segmental box-girder bridges. In the current research program,

1209-2 [CTR] ... FHWA/TX-92+1209-2F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1209-2f.pdf
1.54 MB
______________________________________________________________________________________________________

Shear Strength of Pretensioned Concrete Girders in Negative Moment Regions

49.

1990 ... Anthony C. Powers, Michael E. Kreger, and John E. Breen · This report presents the results of an experimental study performed to evaluate the suitability of current AASHTO/ACI design provisions for shear as applied to thin-web pretensioned I-girders subject to shear and negative-moment bending. Eight tests were

1127-2 [CTR] ... 0-1127-2

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/1127-2.pdf
7.54 MB
______________________________________________________________________________________________________

Design and Behavior of Thin Walls in Hollow Concrete Bridge Piers and Pylons

50.

1990 ... by A.W. Taylor, R.B. Rowell and J.E. Breen · This report is the final report of a three-year research program and summarizes an investigation which examined the behavior of thin-walled hollow concrete box sections such as those typically used in the cross-sections of hollow concrete bridge piers and pylons. A series of accurate

1180-1 [CTR] ... FHWA/TX-91+1180-1F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase1/1180-1f-ctr.pdf
8.5 MB
______________________________________________________________________________________________________

Strength and Ductility of a Three-Span Externally Post-Tensioned Segmental Box Girder Bridge Model

51.

1989 ... R.J.G. MacGregor, M.E. Kreger and J.E. Breen · This report is the third and final report in a series outlining a major study of the behavior of post-tensioned concrete box girder bridges with post-tensioning tendons external to the concrete section. It summarizes the design, construction, testing and interpretation of a very

365-3 F [CTR] ... Report 0-365-3F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/365-3F-CTR.pdf
11.3 MB
______________________________________________________________________________________________________

State of the Art Externally Post-Tensioned Bridges with Deviators

52.

1988 ... L.C. Powell, John E. Breen and Michael E. Kreger · This report is the first in a series outlining a major study of the behavior of post-tensioned concrete box girder bridges with post-tensioning tendons external to the concrete section. It presents an extensive literature review tracing the history and development of the technology

365-1 [CTR] ... 0-365-1

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/365-1-CTR.pdf
3.3 MB
______________________________________________________________________________________________________

Shear Capacity of High Strength Prestressed Concrete Girders

53.

1988 ... David L. Hartmann, John E. Breen, Michael E. Kreger · Recent studies have shown that it is commercially feasible to produce prestressed concrete girders utilizing concrete strengths in the 12,000 psi range. However, current codes and specification provisions for important structural parameters such as shear strength are largely

381-2 [CTR] ... 0-381-2

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/381-2-CTR.pdf
7.7 MB
______________________________________________________________________________________________________

Deviation Saddle Behavior and Design for Externally Post-Tensioned Bridges : Interim report

54.

1988 ... by R.J. Beaupre, L.C. Powell, J.E. Breen an M.E. Kreger · This report is the second in a series outlining major study of the behavior of post-tensioned concrete box girder bridges with post-tensioning tendons external to the concrete section. It presents the results of an experimental program in which ten very accurately sealed

365-2 [CTR] ... 0-365-2

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/365-2-CTR.pdf
8.9 MB
______________________________________________________________________________________________________

Fretting Fatigue in Post-Tensioned Concrete

55.

1988 ... G.P. Wollmann, D.L. Yates, and J.E. Breen · This report summarizes an experimental investigation of fatigue strength of post-tensioned concrete girders. The test series included strand-in-air tests to characterize the prestressing strands utilized, reduced beam specimens with single strands in a tendon, reduced beam specimens

465-2 F [CTR] ... Report 0-465-2F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/465-2f.pdf
4.46 MB
______________________________________________________________________________________________________

Time Dependent Deflections of Pretensioned Beams

56.

1987 ... D.J. Kelly, T.E. Bradberry, John E. Breen · Eight long-span (127-ft) pretensioned AASHTO Type IV bridge beams made with high strength concrete and low-relaxation strand were instrumented in the field. Longtime deformations and internal beam temperatures were measured. Measurements were taken periodically from the time

381-1 [CTR] ... 0-381-1

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/381-1-CTR.pdf
7.8 MB
______________________________________________________________________________________________________

Field Verification of Bridge Deck Post-Tensioning

57.

1987 ... John E. Breen, Ramón L. Carrasquillo, and J. Farbiarz · The prestressing of bridge decks is an attractive concept with substantial potential benefits in both economy and improved durability. However, the practicality and applicability of the concept for slab and girder type bridges has not been previously documented in full size field

389-1 F [CTR] ... Report 389-1F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/389-1F-CTR.pdf
1.9 MB
______________________________________________________________________________________________________

An Exploratory Investigation of Shear Fatigue Behavior of Prestressed Concrete Girders

58.

1987 ... Patrick M. Bachman, Michael E. Kreger and John E. Breen · This report presents the results of an exploratory investigation of shear fatigue behavior of precast prestressed girders with unshored cast-in-place slabs. It includes a literature survey of shear fatigue behavior and design specifications related to fatigue of structural

465-1 [CTR] ... FHWA/TX-88+465-1

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/465-1.pdf
4.15 MB
______________________________________________________________________________________________________

Design Procedures for Prestressed Concrete Bridge Decks

59.

1985 ... R.W. Poston, A.R. Phipps, and John E. Breen · The objective of this study is to investigate the use of deck prestressing as a method of improving durability of bridge decks with the aim of developing suggested AASHTO Specification design requirements to facilitate its use. The results from an experimental test series of

316-3 F [CTR] ... FHWA/TX-86/41+316-3F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/316-3F-CTR.pdf
3.7 MB
______________________________________________________________________________________________________

Durability of Prestressed Bridge Decks

60.

1985 ... R.W. Poston, Ramón L. Carrasquillo, and John E. Breen · It is estimated that $500 million dollars is spent annually for repair of bridge decks which suffer from deterioration. The major cause of bridge deck deterioration is corrosion of reinforcing steel induced by exposure to chlorides from deicers and salt water spray. Dissolved salts

316-1 [CTR] ... FHWA/TX-86/16+316-1

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/316-1-CTR.pdf
6.4 MB
______________________________________________________________________________________________________

Load Tests of a Pretensioned Girder Bridge Near Happy, Texas

61.

1985 ... R.W. Poston, T.E. Bradberry, and J.E. Breen · At the request of the Bridge Division of the Texas State Department of Highways and Public Transportation (TSDHPT), a research study was conducted to investigate the load-deflection behavior of them middle two interior 135-ft spans of a bridge near Happy, Texas. Figure 1 shows this

921-1 F [CTR] ... Report 921-1F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/921-1f.pdf
1.11 MB
______________________________________________________________________________________________________

Strength and Behavior of Bolt Installations Anchored in Concrete Piers

62.

1984 ... James O. Jirsa [and five others] · In this study, the primary objective was to investigate the strength and behavior of anchor bolt installations. In one phase, high strength anchor bolt groups embedded in reinforced concrete piers were investigated. Bolts with a 1-3/4-in. diameter and a yield stress of 105 ksi were used. The

305-1 F [CTR] ... FHWA/TX-85/51+305-1F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/305-1F-CTR.pdf
9.5 MB
______________________________________________________________________________________________________

Evaluation of the Composite Wing Girder Bridge at Bear Creek

63.

1984 ... by Christopher D. White and John E. Breen · This report documents the construction monitoring and subsequent field testing to evaluate the performance of an innovative "loose-fit" composite post-tensioned concrete wing girder bridge constructed over Bear Creek, south of Austin, Texas. The structure was built as a trial evaluation

White 1984 [CTR] ... IAC(84-85)-0799-1F; 799-1

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/799-1f.pdf
2.66 MB
______________________________________________________________________________________________________

Fatigue Behavior of Pretensioned Concrete Girders

64.

1984 ... T.R. Overman, John E. Breen, and Karl H. Frank · This report summarizes the fatigue testing of full scale precast pretensioned girders with unshored cast-in-place slabs. It includes an extensive literature review of prestressed concrete fatigue and development of design specifications relating to fatigue of prestressed concrete.

300-2 F [CTR] ... FHWA/TX-85/39+300-2F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/300-2F-CTR.pdf
14.0 MB
______________________________________________________________________________________________________

Proposed Design Procedures for Shear and Torsion in Reinforced and Prestressed Concrete

65.

1983 ... J.A. Ramirez and John E. Breen · The object of this study is to propose and evaluate a design procedure for shear and torsion in reinforced and prestressed concrete beams, with the aim of clarifying and simplifying current design requirements and AASHTO requirements. In previous reports in this series a three-dimensional space

248-4 F [CTR] ... FHWA/TX-84/38+248-4F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase1/248-4F-CTR.pdf
5.5 MB
______________________________________________________________________________________________________

Experimental Verification of Design Procedure for Shear and Torsion in Reinforced and Prestressed Concrete

66.

1983 ... J.A. Ramirez and John E. Breen · The object of this study is to propose and evaluate a design procedure for shear and torsion in reinforced and prestressed concrete beams, with the aim of clarifying and simplifying current design requirements and AASHTO requirements. This report summarizes an extensive experimental

248-3 [CTR] ... FHWA/TX-84/37+248-3

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase1/248-3-CTR.pdf
7.2 MB
______________________________________________________________________________________________________

Review of Design Procedures for Shear and Torsion in Reinforced and Prestressed Concrete

67.

1983 ... J.A. Ramirez and John E. Breen · The object of this study is to proposed and evaluate a design procedure for shear and torsion in reinforced and prestressed concrete beams, with the aim of clarifying and simplifying current design provisions and AASHTO standard specifications. This report summarizes an extensive literature

248-2 [CTR] ... FHWA/TX-84/36+248-2

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase1/248-2-CTR.pdf
4.3 MB
______________________________________________________________________________________________________

Exploratory Study of Shear Strength of Joints for Precast Segmental Bridges

68.

1983 ... K. Koseki and John E. Breen · The joints between the precast segments are of critical importance in segmental bridge construction. They are critical to the development of structural capacity by ensuring the transfer of shear across the joints and often play a key role in ensuring durability by protecting the tendons against

248-1 [CTR] ... FHWA/TX-84/32+248-1

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase1/248-1-CTR.pdf
2.9 MB
______________________________________________________________________________________________________

Verification of Analysis Programs for Solid and Hollow Concrete Bridge Piers

69.

1983 ... T.E. Gilliam [and three others] · In this report the details and results of an experimental investigation of the stiffness and strength of typical solid and hollow cross section reinforced concrete bridge piers is summarized. The piers were subjected to combinations of axial load and biaxial moments typical of bridge pier applications.

254-1 [CTR] ... FHWA/TX-83/15+254-1

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/254-1-CTR.pdf
4.7 MB
______________________________________________________________________________________________________

Design of Slender, Nonprismatic, and Hollow Concrete Bridge Piers

70.

1983 ... R.W. Poston [and three others] · This report contains detailed recommendations for desirable revisions in the AASHTO Specifications design approach for slender columns, and introduces second order analysis computer codes for electronic computation to improve design of slender concrete bridge piers and bents. The computer codes

254-2 F [CTR] ... FHWA/TX-84/35+254-2F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/254-2F-CTR.pdf
10.7 MB
______________________________________________________________________________________________________

A Fatigue Study of Prestressing Strand

71.

1983 ... Conrad Paulson, Jr., Karl H. Frank, John E. Breen · This study reviews the literature which reports on fatigue studies of prestressing strand and also presents the results of a series of strand fatigue tests. The fatigue tests compared tests on samples of strand fatigue tests. The fatigue tests compared tests on samples of strand

300-1 [CTR] ... FHWA/TX-82/54+300-1

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/300-1-CTR.pdf
3.4 MB
______________________________________________________________________________________________________

The Influence of Casting Position on Development and Splice Length of Reinforcing Bars

72.

1981 ... J. J. Luke [and three others] · The objective of this study was to reexamine the development and splice length requirements for top cast bars based on a comparison of stresses developed at ultimate rather than at a specified value of loaded end slip. To understand the historical development of design provisions for the influence of

242-1 [CTR] ... FHWA/TX-81/15+242-1

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase1/242-1-CTR.pdf
16.71 MB
______________________________________________________________________________________________________

The Influence of Shear on Lapped Splices in Reinforced Concrete

73.

1981 ... A. J. Zekany [and three others] · The primary objective of this investigation was to study the effects of level of shear, amount of transverse reinforcement, and casting position on the strength of lapped splices. A limited number of tests were conducted to examine the influence of concrete strength, slump, and bar size on splice

242-2 [CTR] ... FHWA/TX-81/20+242-2

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase1/242-2-CTR.pdf
4.14 MB
______________________________________________________________________________________________________

Influence of Casting Position and Shear on Development and Splice Length : Design Recommendations

74.

1981 ... James O. Jirsa and John E. Breen · In Report 242-1, "The Influence of Casting Position on Development and Splice Length of Reinforcing Bars," and Report 242-2, "The Influence of Shear on Lapped Splices in Reinforced Concrete," the details and results of the experimental investigation on the influence of casting position and shear on

242-3 F [CTR] ... FHWA/TX-81/35+242-3F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase1/242-3F-CTR.pdf
1.53 MB
______________________________________________________________________________________________________

Design of Post-Tensioned Girder Anchorage Zones

75.

1981 ... W.C. Stone and John E. Breen · Several large thin-webbed box girders, with post-tensioned anchorage zones designed in accordance with AASHTO and ACI requirements, have experienced large cracks along the tendon path in the anchorage zones at the design stressing load. Cracking of this nature provides a path for penetration of

208-3 F [CTR] ... FHWA/TX-81/14+208-3F

Full-text Link:
http://library.ctr.utexas.edu/digitized/texasarchive/phase2/208-3F-CTR.pdf
4.1 MB
______________________________________________________________________________________________________



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