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Shear Behavior of Spliced Post-Tensioned Girders


2015 ... Andrew Moore [and ten others] · "By its nature a spliced girder must contain a number of post tensioning tendons throughout its length. The focus of the experimental program described in this dissertation is the evaluation of the strength and serviceability of posttensioned girders loaded in shear, and, more specifically, how a post-

6652-1 [CTR] ... FHWA/TX-15/0-6652-1

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9.1 MB

Behavior of the Splice Regions of Spliced I-Girder Bridges


2015 ... Chris Williams [and six others] · Spliced girder bridge technology continues to attract attention due to its versatility over traditional prestressed concrete highway bridge construction. Relatively limited data is available in the literature, however, for large-scale tests of spliced girders, and few studies have examined the behavior of the

6652-2 [CTR] ... FHWA/TX-15/0-6652-2

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17.9 MB

0-6652, Spliced Texas Girder Bridges


2015 ... Research Performed by: Center for Transportation Research; Research Supervisor: Oguzhan Bayrak; Researchers: Chris Williams [and nine others] · The goal of this project was to develop a better understanding of spliced girder behavior. To accomplish this task, the project was divided into two phases. The Phase I research was

6652 Summary [CTR] ... PSR 0-6652-S ... Project Summary

Full-text Link:
512 KB

Procedures for the Installation and Quality Control of Anchored CFRP Sheets for Shear Strengthening of Concrete Bridge Girders


2014 ... Jose Garcia [and four others] · The objective of the implementation study was to: Provide guidance for installation of strengthening systems. Provide training materials for personnel carrying out construction and inspection for shear strengthening of concrete beams using CFRP anchors and sheets on concrete beams. Suggest

6306-01-1 [CTR] ... FHWA/TX-13/5-6306-01-1

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2.8 MB

Pretensioned Box Beams: Prestress Transfer and Shear Behavior


2013 ... Alejandro Avendaño [and six others] · Pretensioned concrete box beams have been used in highway bridges for more than half a century. Due to their geometry, they have often been used as a viable alternative to the classic I-shaped girders. Box beams are highly effective in cases where speed of construction is a priority.

5831-3 [CTR] ... FHWA/TX-13/0-5831-3

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11.9 MB

0-5831, Bursting and Shear Behavior of Prestressed Concrete Beams with End Blocks


2013 ... Research Supervisor: Oguzhan Bayrak; Researchers: Catherine Hovell [and five others] · "In 2007, the Texas Department of Transportation (TxDOT) initiated Project 0-5831 to investigate the behavior of U-beams and box beams at prestress transfer and under shear loading. The primary goal of this project was to simplify the details

5831 Summary [CTR] ... PSR 0-5831-S ... Project Summary Report

Full-text Link:
570 KB

Structural Performance of Texas U-Beams at Prestress Transfer and Under Shear-Critical Loads


2013 ... Catherine Hovell [and five others] · The Texas U-Beam standard designs were released in the 1990's and have been used increasingly in bridges across the state since. While prototypes of the 54-in. deep prestressed concrete beam were built during the design phase, no full-scale load tests were performed. This study of the U-

5831-2 [CTR] ... FHWA/TX-13/0-5831-2

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8.3 MB

Bridge Deck Reinforcement and PCP Cracking : Final Report


2013 ... Oghuzan Bayrak [and nine others] · Bridge decks composed of precast, prestressed panels (PCPs) overlain by cast-in-place (CIP) are popular in many states, including Texas. Optimization of top-mat reinforcement and reduction of collinear panel cracking were addressed in this project. Longitudinal top-mat reinforcement was

6348-2 [CTR] ... FHWA/TX-12/0-6348-2

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14.2 MB

0-6348, Bridge Deck Reinforcement and PCP Cracking


2013 ... Research Performed by: Center for Transportation Research; Research Supervisor: Richard E. Klingner; Researchers: Oguzhan Bayrak [and eight others] · "Bridge decks composed of precast, pre-stressed panels (PCPs) overlain by cast-in-place (CIP) are popular in many states of the United States, including Texas...

6348 Summary [CTR] ... PSR 0-6348-S ... Project Summary Report

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689 KB

Shear Strengthening of Reinforced and Prestressed Concrete Beams Using Carbon Fiber Reinforced Polymer (CFRP) Sheets and Anchors


2012 ... Yungon Kim [and six others] · The ability to quickly apply carbon fiber reinforced polymer (CFRP) materials with a minimum of disruption to the use of a structure and with virtually no change in the geometry or weight of the element makes CFRP a viable and attractive material for strengthening existing elements. However,

6306-1 [CTR] ... FHWA/TX-12/0-6306-1; Product 0-6306-P1

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20 MB

Shear Strengthening of Large Reinforced Concrete Elements Using Carbon Fiber Reinforced Polymer (CFRP) Sheets


2011 ... RS: James Jirsa; Researchers: Jose Garcia [and five others] · The objective of the study was to demonstrate the feasibility of using anchored carbon fiber reinforced polymers (CFRP) for shear strengthening of large bridge girders or supporting elements. Particularly, the external U-wrap application of CFRP sheets anchored

6306 Summary [CTR] ... PSR 0-6306-s ... Project Summary Report, 0-6306

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PCP Cracking and Bridge Deck Reinforcement : An Interim Report


2010 ... Richard E. Klingner, Oguzhan Bayrak, James O. Jirsa and Shih-ho Chao · TxDOT Project 0-6348 “Controlling Cracking in Prestressed Concrete Panels and Optimizing Bridge Deck Reinforcing Steel” started on September 1, 2008 and is scheduled to end on August 31, 2012. The project is proceeding on schedule. This report

6348-1 [CTR] ... FHWA/TX-11/0-6348-1

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1 MB

Strength and Serviceability Design of Reinforced Concrete Deep Beams


2009 ... Oguzhan Bayrak [and five others] · An experimental study was conducted in which 37 reinforced concrete deep beam specimens were tested. The specimens are some of the largest deep beams ever tested in the history of shear research. The data from the experimental program and from a database of 179 deep beam tests in

5253-1 [CTR] ... 0-5253-1

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18 MB

Assessment and Rehabilitation Methods for Longitudinal Cracks and Joint Separations in Concrete Pavement


2008 ... Moon Won [and five others] · Researchers surveyed DOTs in the U.S. and searched published literature for effective means of repairing and rehabilitating pavements with longitudinal cracking or longitudinal cracking. These methods included field assessment for determining the severity of the causes of the symptoms and

5444-2 [CTR] ... FHWA/TX-09/0-5444-2

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6.7 MB

D-Region Strength and Serviceability Design


2008 ... Oguzhan Bayrak [and five others] · Since the inclusion of Strut-and-Tie Modeling (STM) provisions in the AASHTO LRFD specifi cations in 1994, TxDOT engineers have been examining the impact that the provisions have on the design of their bent caps. In general, it has been difficult to implement the STM provisions due to their

5253 Summary [CTR] ... PSR 0-5253-S ... Project Summary Report, 0-5253

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107 KB

Rehabilitation Procedures for Longitudinal Cracks and Joint Separation in Concrete Pavement


2008 ... RS: David Fowler; Researchers: Taylor Crawford [and four others] · Longitudinal cracking and longitudinal joint separations in concrete pavements accelerate structural deterioration of the pavement, reducing ride quality, and in severe cases can become a safety hazard to motorists. This research evaluated the

5444 Summary [CTR] ... PSR 0-5444-S ... Project Summary Report, 0-5444

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Recommendations for the Use of Precast Deck Panels at Expansion Joints


2008 ... Sharon L. Wood [and seven others] · Prestressed concrete panels have been used by the bridge construction industry in the state of Texas for many years to increase construction speed and improve safety and economy. At expansion joints, cast-in-place concrete is used and requires temporary formwork and slows

5367-1 [CTR] ... FHWA/TX-09/0-5367-1

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5.5 MB

Development of Simple Bridge Deck Details at Expansion Joints


2008 ... RS: James Jirsa; Researchers: Lewis Agnew [and four others] · Research conducted under TxDOT Project 0-4418 provided information on the behavior of expansion joint details that has the potential to simplify bridge deck construction, reduce construction costs, and improve worker safety. Although the prime purpose of the

5367 [CTR] ... PSR 0-5367-S ... Project Summary Report, 0-5367

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Anchor Bolt Behavior in ASR/DEF-Damaged Drilled Shafts : Technical Report


2007 ... by Sungjin Bae [and three others] · The primary objective of this research is to evaluate the effect of Alkali-Silica Reaction (ASR) and Delayed Ettringite Formation (DEF) on the structural performance of High Mast Illumination Pole (HMIP) foundations and if needed, to recommend a possible retrofitting method to strengthen

MS-8180 ... IAC 88-5DDIA004

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7.9 MB

Effect of Wrapping Chloride Contaminated Structural Concrete with Multiple Layers of Glass


2006 ... RS: James O. Jirsa; Researchers: David Fowler, Harovel Wheat and David Whitney · The objective of this research project was to determine the long-term performance of structural concrete members with fiberglass-reinforced plastic (FRP) composite wrap. In a lab setting, researchers examined a wide range of variables using

1774 Summary [CTR] ... PSR 0-1774-S ... Project Summary Report, 0-1774

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Performance of Fiber Composite Wrapped Columns and Beams in a Corrosive Environment


2006 ... H.S. Karpate [and four others] · The objective of this project is to evaluate the long-term effectiveness of fiber reinforced (FRP) composite wraps in preventing corrosion of reinforced concrete elements in severe environments. The experimental program was established to help determine if FRP wraps provide barriers against

1774-4 [CTR] ... 0-1774-4

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2.2 MB

Bridge Slab Behavior at Expansion Joints


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

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


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

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Development of New Bridge Deck Details at Expansion Joints


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

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Detailed Evaluation of Performance FRP Wrapped Columns and Beams in a Corrosive Environment


2004 ... C.L. Shoemaker [and five others] · The objective of this project is to evaluate the long-term effectiveness of fiber reinforced plastic (FRP) composite wraps in preventing corrosion of reinforced concrete elements in severe environments. The experimental program was established to help determine if FRP wraps

1774-3 [CTR] ... 0-1774-3

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1.1 MB

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


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

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Anchorage of Headed Reinforcement in CCT Nodes


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

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4.8 MB

Behavior and Design of Headed Reinforcement in Concrete Structures


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

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

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Anchorage Behavior of Headed Reinforcement : Literature Review


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

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2.1 MB

Feasibility of Hot Dipped (Zinc) Galvanizing and Other Coatings for the Protection of Reinforcing Steel : A Summary


2002 ... P.G. Deshpande [and five others] · · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).

4904 Summary [CTR] ... PSR 4904-S ... Project Summary Report, 7-4904

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Corrosion Performance of Polymer-Coated, Metal-Clad and Other Rebars as Reinforcements in Concrete : Literature Review


2002 ... P.G. Deshpande [and five others] · This report is a literature review of alternative reinforcement materials for concrete. The time period covered is the last 12 years and the review is restricted to metallic reinforcement materials which may or may not be coated. The materials include epoxy coated steels, galvanized

4904-1 [CTR] ... FHWA/TX-03/4904-1

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3 MB

Effects of Wrapping Chloride Contaminated Concrete with Fiber Reinforced Plastics


2001 ... E.W. Berver [and four others] · Damage to concrete due to corrosion of steel reinforcement is a costly maintenance problem that affects infrastructure. Reinforced concrete structures located in an aggressive environment are susceptible. Fiber reinforced plastic composite wraps have recently been used to rehabilitate

1774-2 [CTR] ... FWHA/TX-03/ 1774-2

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1.5 MB

Evaluation and Performance Monitoring of Corrosion Protection by Fiber-Reinforced Composite Wrapping


2001 ... S.M. Verhulst [and five others] · Corrosion in reinforced concrete structures is causing deterioration of our infrastructure. Structures in or near marine environments and transportation structures on which deicing salts are used are especially vulnerable. A widely promoted method for repairing damaged structures or for protecting

1774-1 [CTR] ... 0-1774-1

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1.6 MB

Feasibility of Various Coatings for the Protection of Reinforced Steel : Corrosion and Bond Testing


2000 ... J.D. Seddelmeyer [and four others] · The objective of this research project is to investigate the corrosion and bond performance of different coatings and nontraditional metals in salt-contaminated concrete. An accelerated macrocell corrosion test is being carried out to determine the behavior of galvanized, stainless steel-

4904-3 [CTR] ... FHWA/TX-03/ 4904-3

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1.18 MB

Corrosion Performance of Polymer-coated, Metal-Clad, and Other Rebars as Reinforcements in Concrete


2000 ... P.G. Deshpande [and four others] · Corrosion of reinforcement in concrete has been a matter of great concern in recent years owing to the increase in consumption of deicing salts on highways and bridges in the United States. The problem has been traced to corrosion of reinforcement caused by chlorides present in deicing salts. |

4904-2 [CTR] ... FHWA/TX-03/ 4904-2

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1.9 MB

Lateral Load Distribution on Transverse Floor Beams in Steel Plate Girder Bridges


2000 ... K.R. Pennings [and four others] · Many twin plate girder bridges have been recently rated inadequate for their current design loads. The controlling members that determine the bridge rating is often the transverse floor beams. The current provisions assume no lateral load distribution on the floor beams. This research focused on

1746-3 [CTR] ... 0-1746-3

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2.6 MB

Measurement-Based Evaluation of Noncomposite Steel Girder Bridges


2000 ... D.V. Jauregui [and four others] · The results from an experimental study into the behavior of noncomposite slab-on-steel girder bridges are presented. Two bridge units were tested under increasing static loads beyond first yield of the girders with a flatbed trailer loaded with concrete barriers. The load tests were unique in

1746-1 [CTR] ... FHWA/TX-0-1746-1

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4.69 MB

Adhesion Testing of Epoxy Coating


1998 ... Enrique Vaca-Cortés [and four others] · The hot water and knife adhesion tests developed in this study proved to be a valuable tool for quality control and for in-depth studies of coating adhesion. Hot water and knife adhesion tests were very useful in discriminating and identifying good from bad quality coatings. The tests were

1265-6 [CTR] ... Research Report No. 0-1265-6

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1.6 MB

Corrosion Performance of Epoxy-Coated Reinforcement : Beam Tests


1998 ... Khaled Z. Kahhaleh [and four others] · The performance of coated reinforcement under conditions that simulate a highly corrosive environment and under loading conditions producing concrete cracking was evaluated in a beam exposure test. Duplicate concrete beams were reinforced with unlinked coated and uncoated bars. Various

1265-4 [CTR] ... 0-1265-4

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4.9 MB

Corrosion Performance of Epoxy-Coated Reinforcement - Macrocell Tests


1998 ... Khaled Z. Kahhaleh [and four others] · A macrocell corrosion experimental program was conducted to study the performance of bent epoxy-coated bars. The damage to the epoxy coating was varied from no visible to the unaided eye (small pinholes) to large gaps of 6x6 mm. The coated bars were embedded in concrete prisms and

1265-3 [CTR] ... 0-1265-3

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3.4 MB

Repair of Epoxy-Coated Reinforcement


1998 ... Enrique Vaca-Cortés [and four others] · "This report provides the findings of an experimental study on repair materials and procedures for epoxy-coated bars. The study was part of a multi-phase project on the performance of epoxy-coated reinforcement. The objective of the study was to assess the effectiveness of

1265-5 [CTR] ... 0-1265-5

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882 KB

Corrosion Performance of Epoxy-Coated Reinforcement : Summary, Findings, and Guidelines


1998 ... by Enrique Vaca-Cortés [and six others] · The integrity and corrosion performance of epoxy-coated reinforcement in aggressive environments was investigated through a series of experimental studies, including: a) use of holiday detection for assessing damage to coating; b) hot water immersion and knife testing for assessment

1265 Summary [CTR] ... 0-1265-S ... Project Summary Report

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4.02 MB

Consolidation of Concrete with Epoxy-Coated Reinforcement


1997 ... by Reagan S. Herman and James O. Jirsa · The specific objectives of this testing are as follows: (1) assess the damage to epoxy-coated reinforcing bars produced by metallic head and rubber head vibrators; (2) assess the quality of consolidation obtained with rubber head vibrators as compared with metallic head vibrators;

1265-2 [CTR] ... FHWA/TX-98/1265-2

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3.1 MB

Evaluation and Repair of Impact-Damaged Prestressed Concrete Bridge Girders


1997 ... by R.S. Zobel, James O. Jirsa, D.W. Fowler and R.L. Carrasquillo · Impact damage of prestressed concrete bridge girders was studied through field inspections and laboratory tests of a damaged girder. Non-destructive techniques for evaluating the extent of damage and the quality of repairs were examined. Various

1370-3 F [CTR] ... FHWA/TX-97/1370-3F

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9.57 MB

Current Practice in the Repair of Prestressed Bridge Girders


1996 ... by Lisa R. Feldman, James O. Jirsa, David W. Fowler and Ramón L. Carrasquillo · This report includes a literature search of currently utilized repair techniques, the Texas Department of Transportation's survey of current practice in the repair of impact damaged prestressed concrete girders, a survey of current practice in the United

1370-1 [CTR] ... FHWA/TX-96/1370-1

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1.56 MB

The Effects of Bar Orientation on the Behavior of Column Splices


1995 ... Jeffrey S. Schmitz and James O. Jirsa · Column splices can either be oriented in a side-by-side configuration or in an offset configuration. The purpose of this study is to examine experimentally the behavior of both splice orientations, and to present recommendations for their usage. | Four column specimens were tested and

1363-1 [CTR] ... FHWA/TXDOT-96/1363-1

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2.1 MB

Method to Evaluate Remaining Prestress in Damaged Prestressed Bridge Girders


1995 ... Scott A. Civjan [and three others] · In assessing damage to a prestressed bridge girder, it is often necessary to determine the prestress remaining in the strands. A device was developed to estimate stress level in strands in damaged bridges. A lateral load is applied to a strand exposed by virtue of damage to the concrete and

1370-2 [CTR] ... FHWA/TX-96/1370-2

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2.04 MB

Development of Bundled Reinforcing Steel


1995 ... J.O. Jirsa, W. Chen, D.B. Grant and R. Elizando · In the construction of reinforced concrete structures, it is sometimes advantageous or even necessary to place reinforcement in bundles. Bundling may be required because of resrictions on member dimensions. Bundling of bars may result in narrower, more graceful members,

1363-2 F [CTR] ... FHWA/TXDOT-96/1363-2F

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3.39 MB

Studies on Damage and Corrosion Performance of Fabricated Epoxy-Coated Reinforcement


1993 ... Khaled Z. Kahhaleh, [and four others] · The various sources and consequences of damage to epoxy-coated reinforcement were studied. For inspection of damage before placement, holiday detectors were evaluated. Potential damage, resulting from concreting operations such as placement and consolidation, was investigated. To

1265-1 [CTR] ... FHWA/TX-93+1265-1

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3.29 MB

Detailing for Structural Concrete


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

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7.23 MB

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


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

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9.63 MB

Effect of Epoxy Coating on Band and Anchorage of Reinforcement in Concrete Structures


1990 ... James O. Jirsa and Bilal S. Harnad · The objective of the research program was to assess the influence of epoxy coating on the bond characteristics of reinforcing bars and to develop or revise the existing recommendations for the design of splices and anchorage of straight and hooked epoxycoated reinforcement.

1181-1 F [CTR] ... FHWA/TX-91+1181-1F

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11.4 MB

Bond Strength of Epoxy-Coated Reinforcing Bars


1987 ... Robert A. Treece and James Jirsa · In this study, 21 beam specimens were tested to determine the bond strength of epoxy-coated and uncoated reinforcing bars in tension. Specimens were constructed with either #6 or #11 bars spliced in the center of the beam. Bars were uncoated with normal mill scale or epoxy-coated with a

Treece 1987 ... PMFSEL REPORT NO. 87-1

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3.01 MB

Anchorage and Development of Reinforcement in Concrete Made Using Superplasitcizers


1985 ... P.L. Musser, Ramón L. Carrasquillo, and James O. Jirsa · A research program was developed which allows the study of the effect of naphthalene and melamine-based superplasticizers on the material properties of concrete, as well as the bond behavior between concrete and reinforcement. Bond behavior was studied through

383-1 [CTR] ... 0-383-1

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5.0 MB

Strength and Behavior of Bolt Installations Anchored in Concrete Piers


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

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9.5 MB

A study of shear behavior of reinforced concrete beam-column joints


1982 ... by Zhang, Liande and James O. Jirsa · The need for adequate joint shear capacity in reinforced concrete frame structures has been recognized by many design and research engineers. Shear design approaches to beam-column joints have been based primarily on beam shear mechanisms or truss mechanisms. A compression strut

FSEL 1982-1 ... PMFSEL report no. 82-1

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6 MB

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


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

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16.71 MB

The Influence of Shear on Lapped Splices in Reinforced Concrete


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

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4.14 MB

The influence of short embedment and close spacing on the strength of hooked bar anchorages


1981 ... by Larry A. Johnson and James O. Jirsa · The development of bars in reinforced concrete beams and/or slabs framing into relatively thin walls presents a special design problem. In anchoring bars in walls, standard 90 degree hooked bars are generally used. In some cases, the wall thickness will be sufficient to permit a short

FSEL 1981-2 ... PMFSEL REPORT NO. 81-2

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16.9 MB

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


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

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1.53 MB

Strength and Behavior of Anchor Bolts Embedded Near Edges of Concrete Piers


1977 ... G.B. Hasselwander [and three others] · The primary objective of this investigation was to evaluate the effects of bolt diameter, embedment length, clear cover, and bearing area on the behavior of high-strength anchor bolts. Both model and full-scale tests were conducted. In addition, a series of exploratory full-scale tests were run

29-2 [CTR] ... CFHR 3-5-74-29-2F

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The Shear Strength of Reinforced Concrete Beam-Column Joints


1977 ... by Donald F. Meinheit and James O. Jirsa. · Beam-column joints were subjected to deformation to establish basic shear behavior. Fourteen interior type connections with reinforcing bars continuous through the joint were tested. The effects of column reinforcement, column load, joint hoop reinforcement, lateral beams, concrete

Meinheit 1977 Diss.

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10.3 MB

The Strength of Anchored Bars : A Reevaluation of Test Data on Development Length and Splices


1975 ... C.O. Orangun, J.O. Jirsa, John E. Breen · An equation has been developed for calculating lengths of lap splices of deformed bars from a nonlinear regression analysis of test results of beams with lap splices. It reflects the effect of length, cover, spacing, bar diameter, concrete strength, transverse reinforcement, and moment

154-3 F [CTR] ... Report 0-154-3F

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2.08 MB

The Performance of Lapped Splices Under Rapid Loading


1975 ... T. Rezansoff [and three others] · The impact or dynamic response and resistance of structures or structural components has been of increasing interest in recent years. The failures of lapped splices at the bases of some concrete highway support structures during the San Fernando earthquake led to questions as to the suitability

154-2 [CTR] ... 0-154-2

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2.54 MB

The Behavior of Multiple Lap Splices in Wide Sections


1975 ... Mark A. Thompson [and three others] · In most reinforced concrete cantilever retaining walls, construction procedures require some type of splicing of the reinforcing steel. Economics often dictate the use of a lap splice. Since a retaining wall has no redundancy, understanding of splice behavior becomes critical to the design

154-1 [CTR] ... 0-154-1

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3.08 MB


The Behavior of Multiple Lap Splices in Wide Sections

1975 ... by Mark A. Thompson [and three others] · In most reinforced concrete cantilever retaining walls, construction procedures require some type of splicing of the reinforcing steel. Economics often dictate the use of a lap splice. Since a retaining wall has no redundancy, understanding of splice behavior becomes critical to the design

154-1 Summary [CTR] ... 0-154-1(S) ... Summary Report (Center for Highway Research)

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1.4 MB

A Guide to the Selection of High-Strength Anchor Bolt Materials


1974 ... G.B. Hasselwander, James O. Jirsa, John E. Breen · An evaluation of the suitability of various high-strength materials for anchor bolt applications was made. A selected group of materials meeting ASTM Standard Specifications were tabulated. Based on the material properties, availability, and cost, several of the materials were

29-1 [CTR] ... Report 3-5-74-29-1

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