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Developing a Fundamental Understanding of the Chemistry of Warm Mix Additives. Training Materials

1.

2012 ... By Amit Bhasin, Zelalam Arega · This document contains a group of slides used to present information about TxDOT Project 6591. · CONTENTS: Task 1. Review on state of the art and literature search -- Task 2. Selection of materials, WMA additives, and processes -- Task 3. Chemical and physio-chemical properties -- Task

6591-P2 [CTR] ... Product 0-6591-P2

Full-text Link:
http://library.ctr.utexas.edu/ctr-publications/0-6591-P2.pdf
4.6 MB
______________________________________________________________________________________________________

Developing a Fundamental Understanding of the Chemistry of Warm Mix Additives

2.

[2012] ... [Research Performed by: Center for Transportation Research; Research Supervisor: Amit Bhasin; Researcher: Zelalem Arega] · "Several independent research studies have made broad comparisons between the engineering properties and performance of WMA mixtures to conventional HMA mixtures. However, there has been

6591 PSR [CTR] ... 0-6591-S ... Project Summary Report

Full-text Link:
http://library.ctr.utexas.edu/hostedpdfs/txdot/psr/6591.pdf

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Recommendations and Guidelines for the Use of WMA Mixtures

3.

2012 ... Zelalem Arega, Amit Bhasin · This document provides recommendations for warm-mix asphalt mixtures based on the results of tests conducted under TxDOT research project 0-6591. · CONTENTS: Chapter 1. Introduction and Background -- Chapter 2. Fatigue Cracking and Moisture Damage Resistance of Asphalt Mortars --

6591-P1 [CTR] ... Product 0-6591-P1

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_6591_p1.pdf
147 KB
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Binder Rheology and Performance in Warm Mix Asphalt

4.

2012 ... Zelalem Arega, Amit Bhasin · Since the introduction of warm mix asphalt (WMA) in the United States, a variety of different technologies and processes have been developed and used to achieve proper mixing and compaction at reduced temperatures compared to conventional hot mix asphalt (HMA). A better understanding of

6591-1 [CTR] ... FHWA/TX-12/0-6591-1

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_6591_1.pdf
1.2 MB
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Geomaterials 2012

5.

2012 ... [various authors] · "This issue contains seven papers on the subject of geomaterials. Specific topics discussed include the following: the effect of aggregate size and shape on pavement performance; the effect of aggregate properties on concrete pavement behavior; and the influence of aggregate-asphalt binding on reclaimed

TRR 2267 ... TRR 2267 ... Transportation Research Record (TRR)

Full-text Link:
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Surface Treatment Binder Construction Toolkit

6.

2012 ... Ambarish Banerjee [and six others] · This document contains description of the recommended test protocol for determining the dilution ratio of the plant emulsion at the construction site, recommended test protocol for determining the viscosity of the plant emulsion at the construction site using shell cups, and description of a

5893-P1 [TechMRT] ... Product 0-5893-P1

Full-text Link:
http://www.depts.ttu.edu/techmrtweb/Reports/Products/0-5893_P1.pdf
2.2 MB
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Interim Report: Binder Rheology and Performance in Warm Mix Asphalt

7.

2012 ... Zelalem Arega and Amit Bhasin · Since the introduction of warm mix asphalt (WMA) in the United States, a variety of different technologies and processes have been developed and used to achieve proper mixing and compaction at reduced temperatures compared to conventional hot mix asphalt. A better understanding of the

6591-2 [CTR] ... FHWA/TX-12/0-6591-2

Full-text Link:
http://www.utexas.edu/research/ctr/pdf_reports/0_6591_2.pdf
2.8 MB
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Fracture Properties and Fatigue Cracking Resistance of Asphalt Binders

8.

2012 ... by Arash Motamed, Amit Bhasin, Anoosha Izadi · Several different types of modifiers are increasingly bring used to improve the performance of asphalt binders or to achieve desired mixture production characteristics (e.g., Warm Mix Asphalt). However, current Superpave performance specifications do not accurately reflect the

2012-161122-1 [CTR] ... 161122-1

Full-text Link:
http://swutc.tamu.edu/publications/technicalreports/161122-1.pdf
9.7 MB
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Designing Fine Aggregate Mixtures to Evaluate Fatigue Crack-Growth in Asphalt Mixture

9.

2011 ... by Anoosha Izadi, Arash Motamed and Amit Bhasin · Fatigue cracking is a significant form of pavement distress in flexible pavements. The properties of the sand-asphalt mortars or fine aggregate matrix (FAM) can be used to characterize the evolution of fatigue crack growth and self-healing in asphalt mixtures. This study compares

2011-161022-1 [CTR] ... SWUTC/11/161022-1

Full-text Link:
http://swutc.tamu.edu/publications/technicalreports/161022-1.pdf
4 MB
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Quantitative Characterization of Microstructure of Asphalt Mixtures

10.

2010 ... Amit Bhasin, Swapneel Badgekar and Anoosha Izadi · The microstructure of the fine aggregate matrix has a significant influence on the mechanical properties and evolution of damage in an asphalt mixture. However, very little work has been done to define and quantitatively characterize the microstructure of the asphalt mastic

2010-476660-00070-1 [CTR] ... SWUTC-10/476660-00070-1

Full-text Link:
http://swutc.tamu.edu/publications/technicalreports/476660-00070-1.pdf
5 MB
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Laboratory Investigation of a Novel Method to Accelerate Healing in Asphalt Mixtures Using Thermal Treatment

11.

2009 ... Amit Bhasin, Atul Narayan, and Dallas N. Little · Asphalt binders have an inherent ability to reverse damage in the form of micro-cracks that is caused due to the repeated action of external loads. This reversal occurs during rest periods between load cycles. The phenomenon of crack reversal is referred to as autogenous or

2009-476660-00005-1 [TTI] ... SWUTC/09/476660-00005-1

Full-text Link:
http://swutc.tamu.edu/publications/technicalreports/476660-00005-1.pdf

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Database of Measure Values

12.

2009 ... Jonathan Howson [and four others] · · CONTENTS: Wilhelmy Plate Procedure Summary (PDF) -- Wilhelmy Plate Test Procedures (PDF) -- Wilhelmy Plate Procedure Full (PDF) -- Deliverables.zip (Guidelines For Transporting Wilhelmy Plate .doc, Contact Angles to SE .xls, Spreading Pressure to SE .xls, Surface Energy-

4524-01-P1 [TTI] ... Product 5-4524-01-P1

Full-text Link:
http://library.ctr.utexas.edu/hostedpdfs/5-4524-01-P1.zip
673 KB
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Development of a Database for Surface Energy of Aggregates and Asphalt Binders

13.

2009 ... Jonathan Howson [and four others] · TxDOT project 0-4524 evaluated the influence of surface energy of aggregates and binders on the resistance of asphalt mixtures to moisture damage. The results from this research lead to the development of a three-tier approach to assess the moisture damage, resistance of asphalt mixtures.

4524-01-1 [TTI] ... 5-4524-01-1

Full-text Link:
http://tti.tamu.edu/documents/5-4524-01-1.pdf

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Bituminous Paving Mixtures

14.

2007 ... [various authors] · · CONTENTS: Bulk Specific Gravity Measurements of 25.0-mm and 37.5-mm Coarse-Graded Superpave Mixs - Stacy G. Williams -- Development of New Moisture-Conditioning Procedure for Hot-Mix Asphalt - Bjorn Birgisson, Reynaldo Roque, Gale C. Page and Jianlin Wang -- Effect of Binder Type,

TRR 2001 ... TRR 2001 ... Transportation Research Record (TRR), 2001

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______________________________________________________________________________________________________

Bituminous and Nonbituminous Materials of Bituminous Paving Mixtures

15.

2007 ... [various authors] · · CONTENTS: Comparative Laboratory Study of Sasobit and Aspha-Min Additives in Warm-Mix Asphalt - Nazimuddin M. Wasiuddin, Selvaratnam Selvamohan, Musharraf M. Zaman and Marie Louise Thérèse Anne Guegan; -- Comparison of Polyphosphoric Acid-Modified Asphalt Binders with Straight and Polymer-

TRR 1998 ... TRR 1998 ... Transportation Research Record (TRR), 1998

Full-text Link:
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Implementation Plan for Use of Surface Energy Measurements to Select Materials Resistant to Moisture Damage

16.

2007 ... by Eyad Masad [and three others] · The main objective of the TxDOT 0-4524 study was to develop experimental methods to measure the adhesive and cohesive bonds in asphalt mixtures under dry and wet conditions as well as to develop protocols to quantify the resistance of asphalt mixtures and mastic to moisture

4524-P3 [TTI] ... Product 0-4524-P3

Full-text Link:
http://library.ctr.utexas.edu/hostedpdfs/0-4524-P3.zip
20 MB
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System for the Evaluation of Moisture Damage Using Fundamental Material Properties

17.

2007 ... Jonathan Howson [and six others] · Moisture damage in asphalt mixtures can occur within the mastic (cohesive fracture) or at the aggregate-mastic interface (adhesive fracture or failure). Whether or not a cohesive or adhesive failure occurs depends on the nature of the mastic and the relative thickness of the mastic. This report is

4524-1 [TTI] ... FHWA/TX-07/0-4524-1

Full-text Link:
http://tti.tamu.edu/documents/0-4524-1.pdf

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Application of Surface Energy Measurements to Evaluate Moisture Susceptibility of Asphalt and Aggregates

18.

2007 ... Robert Lytton [and six others] · Moisture damage in asphalt mixtures can occur within the asphalt mastic (cohesive fracture) or at the aggregate mastic interface (adhesive fracture or failure). Whether or not a cohesive or adhesive failure occurs depends on the nature of the mastic and the relative thickness of the mastic. The majority

4524-S [TTI] ... PSR 0-4524-S ... Project Summary Report, 0-4524

Full-text Link:
http://ftp.dot.state.tx.us/pub/txdot-info/rti/psr/4524.pdf

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Bituminous Paving Mixtures 2006

19.

2006 ... [various authors] · · CONTENTS: Limits on Adhesive Bond Energy for Improved Resistance of Hot-Mix Asphalt to Moisture Damage-- Amit Bhasin, Eyad Masad, Dallas Little, and Robert Lytton; -- Long-Term Effectiveness of Antistripping Additives: Laboratory Evaluation-- Qing Lu and John T. Harvey; -- Evaluation of

TRR 1970 ... TRR 1970 ... Transportation Research Record (TRR), 1970

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______________________________________________________________________________________________________

Geomaterials 2006

20.

2006 ... [various authors] · · CONTENTS: Evaluation of Test Equipment for Determination of Fine Aggregate Specific Gravity and Absorption-- Stephen H. Cross, Msengi K. Mgonella, and Yatish Jakatimath; -- Aggregate Morphology Affecting Resilient Behavior of Unbound Granular Materials-- Tongyan Pan, Erol Tutumluer, and Joseph

TRR 1952 ... TRR 1952 ... Transportation Research Record (TRR), 1952

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______________________________________________________________________________________________________

Recommended Resolutions to Selected Hot Mix Asphalt Related Issues

21.

2006 ... Joe W. Button, Arif Chowdhury, and Amit Bhasin · Approximately 94 percent of paved roads in Texas are asphalt pavements. Each year, rehabilitation of existing roads and construction of new roads require about 12 million tons of hot mix asphalt (HMA), which equates to approximately $500,000,000. Since 1970, some highways

4203-S [TTI] ... PSR 0-4203-S ... Project Summary Report, 0-4203

Full-text Link:
http://ftp.dot.state.tx.us/pub/txdot-info/rti/psr/0-4203-s.pdf

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FIBERS FROM RECYCLED TIRE AS REINFORCEMENT IN HOT MIX ASPHALT

22.

2006 ... Arif Chowdhury, Joe W. Button, and Amit Bhasin · Previous laboratory and field research has demonstrated that virgin synthetic and cellulose fibers provide important attributes for hot mix asphalt (HMA): reduced asphalt (mastic) draindown during construction for certain types of mixtures, reinforcement which

2006-167453-1 [TTI] ... SWUTC/06/167453-1

Full-text Link:
http://swutc.tamu.edu/publications/technicalreports/167453-1.pdf

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Evaluation of Simple Performance Tests on HMA Mixtures

23.

2005 ... Amit Bhasin, Joe W. Button, and Arig Chowdhury · The Federal Highway Administration (FHWA) and the National Cooperative Highway Research Program (NCHRP) have sponsored or are sponsoring research projects that will lead to the development and validation of advanced materials characterization models and associated

558-S [TTI] ... PSR 558-S ... Project Summary Report, 9-558

Full-text Link:
http://ftp.dot.state.tx.us/pub/txdot-info/rti/psr/9-558-s.pdf

______________________________________________________________________________________________________

Evaluation of Selected Laboratory Procedures and Development of Databases for HMA

24.

2005 ... Amit Bhasin, Joe Button, and Arif Chowdhury · The objectives of this research project were to develop and validate laboratory test protocols for measuring rut-susceptibility of hot mix asphalt (HMA) mixtures; to identify the best available laboratory test protocol(s) for predicting moisture susceptibility of HMA paving mixtures; and to

4203-3 [TTI] ... 0-4203-3

Full-text Link:
http://tti.tamu.edu/documents/0-4203-3.pdf

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Analysis of South Texas Aggregates for Use in Hot Mix Asphalt : Technical Report

25.

2005 ... Amit Bhasin, Joe W. Button, Arif Chowdhury, and Eyad Masad · The primary locally available aggregates in the South Texas districts for highway construction are siliceous river gravels, which typically exhibit a rounded shape. The warm South Texas climate combined with heavy truck traffic aggravates any rutting problems that may

4203-4 [TTI] ... FHWA/TX-05/0-4203-4

Full-text Link:
http://tti.tamu.edu/documents/0-4203-4.pdf
690 KB
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Design of TxDOT Asphalt Mixtures Using the Superpave Gyratory Compactor

26.

2004 ... Joe W. Button, Arif Chowdhury, and Amit Bhasin · The primary objective of this project was to develop laboratory protocols for using the Superpave gyratory compactor (SGC) in place of the Texas gyratory compactor (TGC) to design essentially all of the Texas Department of Transportation (TxDOT) dense-graded hot mix asphalt

4203-1 [TTI] ... FHWA/TX-05/0-4203-1

Full-text Link:
http://tti.tamu.edu/documents/0-4203-1.pdf

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Bituminous Paving Mixtures 2004

27.

2004 ... [various authors] · · CONTENTS: Evaluation of Use of Synthetic Lightweight Aggregate in Hot-Mix Asphalt -- Mallick, Rajib B.; Hooper, Frederick P.; O'Brien, Sean; Kashi, Mohsen. Aggregate Orientation and Segregation in Laboratory-Compacted Asphalt Samples -- Hunter, Alistair E.; Airey, Gordon D.; Collop, Andrew C..

TRR 1891 ... TRR 1891 ... Transportation Research Record (TRR), 1891

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Evaluation of Simple Performance Tests on HMA Mixtures from the South Central United States

28.

2004 ... Amit Bhasin, Joe W. Button, and Arif Chowdhury · A wide variety of hot mix asphalt (HMA) materials and mixture designs were obtained from the six states in the south central region of the United States. Three additional mixtures were designed and produced in the laboratory to provide modified mixtures in this project. All

558-1 [TTI] ... FHWA/TX-03/9-558-1

Full-text Link:
http://tti.tamu.edu/documents/9-558-1.pdf

______________________________________________________________________________________________________

As-built properties of test pavements on IH-20 in Atlanta District

29.

2003 ... Arif Chowdhury, Amit Bhasin, and Joe W. Button · The primary objectives of this research project were to measure as-built properties of nine test pavements and populate a database to be used in a future project for evaluating relationships between pavement performance and measured properties during construction. Texas

4203-2 [TTI] ... FHWA/TX-03/0-4203-2

Full-text Link:
http://tti.tamu.edu/documents/0-4203-2.pdf

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