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Automated Distress Surveys : Analysis of Network Level Data (Phase III)


2015 ... Pedro A. Serigos [and four others] · The first two phases of this research study provided a project-level assessment of the accuracy and precision of the automated 3D system developed by the Texas Department of Transportation (TxDOT), and state-of-the practice commercially available automated systems for the high-speed

6663-3 [CTR] ... FHWA/TX-15/0-6663-3

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2.5 MB

Revised Pay Adjustment Factors for HMA and Concrete Pavements


2014 ... Prasad Buddhavarapu [and four others] · The current pay adjustment system for HMA production, placement, and ride consistently rewards contractors, but does not necessarily result in improved performance of constructed HMA pavements and longer service life. The current system needs to be changed in order to improve

6675-1 [CTR] ... FHWA/TX-14/0-6675-1

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3.1 MB

Evaluation of the Benefits of Diamond Grinding of CRCP : Final Report


2014 ... Prasad Buddhavarapu [and three others] · This report outlines the testing and evaluation of a continuously reinforced concrete pavement (CRCP) on IH35W near Fort Worth rehabilitated using diamond grinding instead of applying an asphalt overlay to extend the serviceability of the old concrete pavement. Surface

9046-01-1 [CTR] ... FHWA/TX-13/5-9046-01-1

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1.2 MB

Flexible Pavement Narrow Widening Best Practices and Lessons Learned


2014 ... Maria Burton [and six others] · The Texas Department of Transportation (TxDOT) has experienced problems with construction quality and performance on narrow widening projects (i.e., projects that notch and widen pavement to increase lane width 2?8 ft or add a 2- to 5-ft shoulder). Texas has approximately 64,000 lane-

6748-2 [CTR] ... FHWA/TX-14/0-6748-2; Product 0-6748-P1; Product 0-6748-P3

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14.5 MB

0-6748, Best Practice for Flexible Pavement Structure Widening Projects


[2014] ... Research Performed by: Center for Transportation Research; Research Supervisor: Mike Murphy; Researchers: Maria Burton · "The Texas Department of Transportation (TxDOT) has experienced problems with construction quality and performance on narrow widening projects (e.g., adding a 2- to 5-ft shoulder)... due to

6748 Summary [CTR] ... PSR 0-6748-S ... Project Summary Report

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102 KB

Field Evaluation of Automated Distress Measuring Equipment


2014 ... Pedro A. Serigos [and four others] · Project 0-6663 Phase 2 involved evaluation of the TxDOT automated visual distress 3D laser system van and three automated systems developed by automated visual distress data collection vendors. The research team selected 20 test sections in the Austin and Waco Districts

6663-2 [CTR] ... FHWA/TX-14/0-6663-2

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86 MB ***large file, may take time to download

Recommendations for Selection of Automated Distress Measuring Equipment


2014 ... Pedro Serigos [and five others] · "Phase 2 of Texas Department of Transportation (TxDOT) Research Project 0-6663: Evaluation of Pavement Rutting and Distress Measurements had the objective of evaluating the accuracy and precision of the new automated system developed by a TxDOT research group (composed of staff

6663-P2 [CTR] ... Product 0-6663-P2

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231 KB

Pavement management, 2013. Volume 4


2013 ... [various authors] · This issue contains 14 papers concerned with pavement management. The papers are organized into two parts. The first part addresses strength and deformation characteristics of pavement sections. Specific topics discussed in this part include: unbound pavement layers modified by geogrids; unbound

TRR 2369 ... TRR 2369 ... Transportation Research Record (TRR), 2369

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Best Practices for Flexible Pavement Structure Widening. Workshops


2013 ... Maria Burton [and four others] · "This document presents a summary of the two half-day workshops/webinars that took place at CTR July 2, 2013. The workshops constitute Product 2 (P2) of the research project and correspond to Task 3. The purpose of the workshops was to obtain expert opinions from TxDOT

6748-P2 [CTR] ... Product 0-6748-P2

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55.2 MB

Performance and Cost Effectiveness of Permeable Friction Course (PFC) Pavements


2013 ... by Edith Arámbula [and five others] · In this project, the research team evaluated the performance of Permeable Friction Courses (PFC) over time and compared it against other types of wearing surface pavement layers. Several pavement sections including Asphalt Rubber (AR) PFCs, Performance Graded (PG) PFCs, and dense-

5836-2 [TTI] ... FHWA/TX-12/0-5836-2

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30.3 MB

0-5836, Performance of Permeable Friction Course (PFC) Pavements over Time


2013 ... Research Performed by: Texas A&M Transportation Institute; Research Supervisor: Amy Epps Martin; Researchers: Edith Arambula [and four others] · "Recent Texas Department of Transportation (TxDOT) Projects 0-5262, 0-5185, and 0-4834 addressed important design, construction, and maintenance issues associated with

5836 Summary [TTI] ... PSR 0-5836-S ... Project Summary Report

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296 KB

PFC Performance Database: without Skid and Crash Data


2012 ... by Andre Smit, Jorge A. Prozzi · "A product of this research study was a database comprising permeable friction course (PFC) projects evaluated as part of the study. The database includes project information as well as material and specific test data collected during the study. This document serves as a data dictionary for the

5836-P1 v.1 [CTR] ... Product 0-5836-P1

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Surface Treatment Binder Construction Toolkit


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

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2.2 MB

Monitoring of Experimental Sections Using a Web-based Database


2012 ... Jose Pablo Aguiar-Moya, Andre de Fortier Smit, Jorge A. Prozzi · In recent years, a number of databases have been developed as part of TxDOT’s Research Program for a diversity of goals and objectives. However, there is no one database that collects and stores lessons learned from long-term field application of different technologies

6357-1 [CTR] ... FHWA/TX-11/0-6357-1

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3.7 MB

Laboratory Evaluation of Constructability Issues with Surface Treatment Binder


2012 ... by Sanjaya Senadheera [and five others] · TxDOT depends greatly on sprayed seals for new road construction (surface treatment) and on preventive maintenance (seal coat). It is very important for TxDOT to have emulsified asphalt (EA) as a key binder type at its disposal to reduce costs. However, EA brings its own set of

5893-1 [TechMRT] ... FHWA/TX-12/0-5893-1

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10.6 MB

Project Report on the Continued Development and Analysis of the Flexible Pavements Database


2012 ... Ambarish Banerjee [and four others] · The original scope of TxDOT Research Project 0-6275 included continuing the development of the Texas Flexible Pavement database (TFPD) developed as part of Research Project 0-5513. The objective of 0-5513 was to deliver a database capable of hosting the data necessary for new pavement

6275-1 [CTR] ... FHWA/TX-11/0-6275-1

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1.3 MB

A Parametric Procedure to Evaluate Fracture Sensitivity of HMA


[2011] ... Prasad Buddhavarapu, Fortier Smit, and Dr. Jorge A. Prozzi · The semi-circular bending (SCB) test allows for the evaluation of the strength and fracture performance of asphalt laboratory specimens and field cores. The geometry of SCB specimen results in variable stress and strain response under loading that may be

Poster 2011 CTR Symp: Buddhavarapu

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No online resource supplied by researcher

CAM Mix Design with Local Aggregates


2011 ... Andre de Fortier Smit, Sivaram Prasad, Jorge Prozzi, Maghsoud Tahmoressi · This study provides revised mix design recommendations for crack attenuating mixtures (CAM) with local aggregates. The use of lower quality aggregates is cost beneficial but limits the application of these mixes in terms of reduced performance.

6435-1 [CTR] ... FHWA/TX-12/0-6435-1

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24.3 MB

Laboratory Evaluation of Constructability Issues With Surface Treatment Binders


2011 ... RS: Sanjaya Senadheera; Researchers: Lei Niu [and four others] · TxDOT depends greatly on sprayed seals for new road construction (surface treatment) and on preventive maintenance (seal coat). It is very important for TxDOT to have emulsified asphalt (EA) as a key binder type at its disposal to reduce costs in this era of high

5893-Summary [TechMRT] ... PSR 0-5893-S ... Project Summary Report, 0-5893

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87 KB

CAM Mix Design with Local Materials in Texas


2011 ... RS: Jorge Prozzi; Researchers: Prasad Buddhavarapu, Andre de Fortier Smit, Maghsoud Tahmoressi · Laboratory testing of aggregates from 14 quarries in Texas was done to characterize the classification, aggregate imaging system (AIMS) and filler properties of aggregates. Current performance criteria in terms of Hamburg

6435 Summary [CTR] ... PSR 0-6435-s ... Project Summary Report, 0-6435

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107 KB

Training Workshop on Emulsified Asphalt Surface Treatment Construction Toolkit


2011 ... Sanjaya Senadheera [and five others] · Workshop slide presentation for Research Project 0-5893. The objective of this research project was the evaluation of emulsified asphalt binders used in seal coats and surface treatments and to provide testing procedures and guidance for selection, handling and successful application of

5893-P2 [TechMRT] ... Product 0-5893-P2

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No online resource supplied by publisher (very large file)

Monitoring of Experimental Sections Using a Pavement Database


2011 ... RS: Jorge Alberto Prozzi; Researchers: Jose Pablo Aguiar-Moya and Andre de Fortier Smit · The goal of this project was to develop a database of experimental pavement sections constructed in Texas. It provided for collection of performance data of these sections to determine the types of experiments that have been successful

6357-Summary [CTR] ... PSR 0-6357-S ... Project Summary Report, 0-6357

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Laboratory Evaluation of Influence of Operational Tolerance (Acceptance Criterion) on Performance of Hot-Mix Asphalt Concrete


2010 ... Christian G. Vasquez, Jose P. Aguiar-Moya, Andre de F. Smit, Jorge A. Prozzi · The performance of flexible pavements relies heavily on the final quality of the hot-mix asphalt concrete (HMAC) as it is produced and placed in the field. To account for production and construction variability while ensuring the quality of the HMAC,

6045-1 [CTR] ... FHWA/TX-11 /0-6045-1

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1.2 MB

Development of the Texas Flexible Pavements Database : Implementation Steps for the Tour-based Model Design Option and the Data Needs


2010 ... Ambarish Banerjee [and three others] · The goal of this research project was the development of the Texas Flexible Pavement Database (TFPD) to serve as a reference database comprising design, construction, structural and performance data for selected roadway sections in Texas. The database was designed as a project-

5513-2 [CTR] ... FHWA/TX-10/0-5513-2

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3 MB

Synthesis of Current Research on Permeable Friction Courses : Performance, Design, Construction, and Maintenance


2010 ... Kai-Wei Liu [and five others] · Over the past several years, the Texas Department of Transportation (TxDOT) adopted the use of porous or permeable friction course (PFC) mixtures as a thin asphalt pavement surface layer to provide safety and environmental benefits. This type of mixture is defined in TxDOT Specification Item 342

5836-1 [TTI] ... FHWA/TX-10/0-5836-1

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Laboratory Evaluation of Influence of Operational Tolerance (Acceptance Criterion) on Performance of HMAC


2009 ... Jorge A. Prozzi [and three others] · The development of high performing mixtures is a major objective of hot-mix asphalt (HMA) design; however, most mix design methods are based on volumetrics because volumetric properties correlate with performance. This correlation is by no means perfect, therefore, more reliable methods

6045 [CTR] ... PSR 0-6045 ... Project Summary Report, 0-6045

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Developing a Sustainable Flexible Pavement Database in Texas


2009 ... Jorge Prozzi and Andre Smit · This project has demonstrated that it is possible to track the network-level performance of surface mixtures constructed in Texas. A procedure is outlined in the report to accomplish this and involves firstly identifying a project’s extents in terms of Texas Reference Marker (TRM) information. A web-based

5496-1 [CTR] ... 0-5496-1

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1.2 MB

Tracking the Performance of HMA Mixtures in Texas


2008 ... Jorge Prozzi and Andre Smit · This project was initiated to expand on and apply the database and software developments conducted under Texas Department of Transportation (TxDOT) inter-agency contracts and Federal Highway Administration (FHWA) Pathfinder studies towards tracking and analyzing the performance of hot-

5496 [CTR] ... PSR 0-5496 ... Project Summary Report, 0-5496

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Development of a Flexible Pavements Database


2008 ... Jorge A. Prozzi [and four others] · The objective of this project is to develop, validate and calibrate any pavement design and rehabilitation method, reliable databases are essential. These databases should include material properties, pavement structural characteristics, highway traffic information, environmental conditions, and

5513 Summary [CTR] ... PSR 0-5513-S ... Project Summary Report, 0-5513

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Web-based Database


2008 ... Jorge A. Prozzi [and three others] · The TxFlex spreadsheet contains a sheet listing "Entities," a sheet listing "Attributes" for each entity, and a sheet with an E-R diagram. · CONTENTS: "TxFlex Data Dictionary" (Excel spreadsheet) -- "TxFlex DB" (Access Database) · Publ. by: University of Texas at Austin. Center for

5513-P1 [CTR] ... Product 0-5513-P1

Full-text Link:
6.1 MB ZIP file = compressed .xls and .mdb files

Material Design and Testing Methods for Homemade and Containerized Cold Mix


2007 ... RS: Jorge A. Prozzi; Researchers: Samrat Chatterjee [and three others] · Cold patching asphalt mixtures constitute an essential element in the maintenance of Texas' highway infrastructure. These mixtures are often used to patch potholes in areas with cold and wet weather, particularly when hot mix asphalt is not available

4873 Summary [CTR] ... PSR 0-4873-s ... Project Summary Report, 0-4873

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Hamburg Wheel-Tracking Database Analysis


2007 ... Abdulrahman Alhabshi [and six others] · This report outlines statistical analyses done to investigate whether the Hamburg wheel-tracking device (HWTD) can be used to validate durability tests such as the magnesium sulfate soundness (MSS) and Micro-Deval tests. Researchers manipulated and merged the Hamburg test database

1707-7 [TTI] ... FHWA/TX-05/0-1707-7

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TexSys: Guide for Selecting HMA for Texas Flexible Pavements


2007 ... Andre de Fortier Smit [and three others] · The guide for selecting mixtures for flexible pavements will provide the designers with recommendations for selecting mix types based on factors such as traffic, speed and expected performance. The guide covers mixes such as regular dense mixes Item 340 and 341, permeable friction

4824-P1 [UTEP] ... Product 0-4824-P1

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Recommendations for Reducing Superpave Compaction Effort to Improve Mixture Durability and Fatigue Performance


2007 ... Jorge A. Prozzi [and four others] · The Texas Department of Transportation (TxDOT) has recently established Hamburg Wheel Tracking Device (HWTD) specification criteria for Superpave mixtures (Item 344). This step has introduced a performance-related feature into an otherwise volumetric mix design approach structured to

5132-1 [CTR] ... 0-5132-1

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2.5 MB

Performance Evaluation of HMA Consisting of Modified Asphalt Binder


2007 ... Rajpal Sugandh [and four others] · To achieve Strategic Highway Research Program (SHRP) specified PG grades, refineries make use of modifiers to enhance the properties of base asphalt. Even though modified binders may meet PG specifications, some perform better than others. This can be attributed to binder/hot mix

4824-2 [UTEP] ... FHWA/TX-07/ 0-4824-2

Full-text Link:
2.3 MB

Evaluation of Binder Tests for Identifying Rutting and Cracking Potential of Modified Asphalt Binders


2007 ... Gina M. Hrdlicka [and four others] · To minimize premature failures, the Strategic Highway Research Program (SHRP) proposed binder tests that can identify poorly performing binders. To meet new performance grade specifications, a modifier is typically added to the binder. Occasionally, state highway agencies specify a

4824-1 [UTEP] ... FHWA/TX-07 / 0-4824-1

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1.17 MB

Analysis of Laboratory Compactive Effort to Optimize the Durability of Superpave Mixture Design


2006 ... RS: Jorge A. Prozzi; Researchers: Jose Pablo Aguiar [and three others] · In an attempt to design mixes with higher binder contents to alleviate cracking problems, this study investigated possible modifications to the current design criteria for Superpave mixtures. The initial findings of this study indicate that the current compaction

5132 Summary [CTR] ... PSR 0-5132-S ... Project Summary Report, 0-5132

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Computer Expert System (CD-ROM)


2006 ... Jorge Prozzi, Andre Smit, and Tandon Vivek · TexSys considers a number of factors influencing the selection of HMA and recommends a mixture based on these. AMFPHP Computer Expert System is a web-based application designed to aid in the selection of HMA mixtures. · Publ. by: University of Texas at Austin. Center for

4824-P2 [CTR] ... Product 0-4824-P2

Full-text Link:
1.8 MB ZIP

Advanced Quality Systems : Guidelines for Establishing and Maintaining Construction Quality Databases


2006 ... C. Rao [and six others] · The main objective of this study was to develop and present guidelines for State highway agencies (SHAs) in establishing and maintaining database systems geared towards construction quality issues for asphalt and concrete paving projects. To accomplish this, a literature search and review was

FHWA-HRT-07-019 ... FHWA-HRT-07-019

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1.3 MB

Guidelines for Selecting Asphalt Mixtures and Evaluation of Polymer-Modified Mixes


2006 ... RS: Vivek Tandon; Researchers: Soheil Nazarian [and three others] · To implement the Mechanistic-Empirical Pavement Design Guide (MEPDG), it was necessary to evaluate hot mix asphalt (HMA) using newly proposed performance tests (dynamic modulus, flow time, and flow number tests). Since manufacturers typically

4824 Summary [UTEP] ... PSR 0-4824-S ... Project Summary Report, 0-4824

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TexSys : A TxDOT Expert System for the Selection of Hot-Mix Asphalt (HMA) Mixes


2006 ... Jorge A. Prozzi and Andre Smit · Presentation contents: Introduction; Survey; Influence Properties; Influence Factors; Description of Goals; Description of TexSys; Using TexSys: Examples | TexSys is a web-based application expert system for the selection of Hot-Mix Asphalt (HMA). TexSys is the product of TxDOT Project 0-

4824-P4 [CTR] ... Product 0-4824-P4

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3.9 MB ZIP

Performance Assessment by Using Nondestructive Testing


2006 ... Yetkin Yildirim [and four others] · This project was conducted to determine the correlation of field performance to Hamburg Wheel Tracking Device (HWTD) testing results. HWTD measures the combined effects of rutting and moisture damage by rolling a steel wheel across the surface of an asphalt concrete specimen that is

4185-3 [CTR] ... 0-4185-3

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Development of Mix Design and Testing Procedures for Cold Patching Mixtures


2006 ... Samrat Chatterjee [and four others] · The objective of this study is to address the use and performance of homemade and containerized patching maintenance mixtures for repairs in cold and wet weather. The Texas Department of Transportation (TxDOT) reported problems relating to the durability, workability, and shelf life of

4872-1 [CTR] ... 0-4872-1

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1.5 MB

Asphalt Concrete Overlays on CRCP : Decision Criteria, Tack Coat Evaluation, and Asphalt Concrete Mixture Evaluation


2005 ... Manuel Trevino [and three others] · This report presents the research undertaken within two areas of study of thin asphalt concrete (AC) overlays to rehabilitate continuously reinforced concrete pavements (CRCP). The first one is the development of a decision tree for the project selection of a rehabilitation of this kind. The

4398-3 [CTR] ... 0-4398-3

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Bituminous Paving Mixtures 2003


2003 ... [various authors] · · CONTENTS: Aggregate Imaging System for Characterizing the Shape of Fine and Coarse Aggregates / Fletcher, Thomas; Chandan, Chandan; Masad, Eyad; Sivakumar, Krishna -- Refinement of New-Generation Open-Graded Friction Course Mix Design / Watson, Donald E.; Moore, Kathryn Ann; Williams,

TRR 1832 ... TRR 1832 ... Transportation Research Record (TRR), 1832

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Report on a Comparison of the Effectiveness of Two Pavement Rehabilitation Strategies on US 281 Near Jacksboro


1999 ... Frederick Hugo [and three others] · The main objective of the most recent MLS test program was to conduct a comparative study of two rehabilitation processes, Remixer and Dustrol, constructed on the southbound and northbound lanes of US 281 near Jacksboro, Texas, in the Fort Worth District, in 1995 and 1996, respectively.

1814-1 [CTR] ... FHWA/TX-0-1814-1

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2.7 MB

Report on the First Jacksboro MMLS Tests


1999 ... Andre de Fortier Smit, Frederick Hugo and Amy L. Epps · This report outlines the two accelerated pavement tests completed in Jacksboro, Texas, using the 1/3-scale Model Mobile Load Simulator (MMLS3). The MMLS3 tests were initially commissioned to investigate the stripping phenomenon evident under conventional

1814-2 [CTR] ... FHWA/TX-00/0-1814-2

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1.4 MB

Testing of Conventional and Unconventional Aggregates and Soils


1998 ... [various authors] · · CONTENTS: Aggregate Degradation Testing by Gyratory Testing Machine - Byron E. Ruth and Mang Tia -- Triaxial Testing of Elastoplastic Materials Toward Scaled-Down Accelerated Pavement Testing - Martin van de Ven, André de Fortier Smit and Kim Jenkins -- Thin-Section Petrography of Concrete

TRR 1619 ... TRR 1619 ... Transportation Research Record (TRR), 1619

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Recommendations for Establishing the Texas Roadway Research Implementation Center


1998 ... John Joe Allen, Andre de Fortier Smit and Paige Warren · The overall objective of the Roadway Research Initiative study was to describe an advanced testing capability, on that would speed implementation of the results from traditional computer and laboratory-based research efforts by providing a reusable test bed for evaluating

1812 Summary [CTR] ... FHWA/TX-0-1812-S ... Project Summary Report

Full-text Link:
3.3 MB

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