Laboratory Evaluation Of Polymer And Multi Grade Asphalt Binders
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Laboratory Evaluation Of Polymer And Multi Grade Asphalt Binders
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Author :
language : en
Publisher:
Release Date : 1992
Laboratory Evaluation Of Polymer And Multi Grade Asphalt Binders written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.
Laboratory Evaluation Of Polymer And Multi Grade Asphalt Binders
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Author : Roderick W. Monroe
language : en
Publisher:
Release Date : 1992
Laboratory Evaluation Of Polymer And Multi Grade Asphalt Binders written by Roderick W. Monroe and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Pavements, Asphalt categories.
Laboratory And Field Evaluation Of Polymer Modified Asphalt Binders And Mixtures
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Author : Hassan Faghihnia Torshizi
language : en
Publisher:
Release Date : 1991
Laboratory And Field Evaluation Of Polymer Modified Asphalt Binders And Mixtures written by Hassan Faghihnia Torshizi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Asphalt concrete categories.
Installation And Laboratory Evaluation Of Alternatives To Conventional Polymer Modification For Asphalt
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Author : Stacey Diefenderfer
language : en
Publisher:
Release Date : 2015
Installation And Laboratory Evaluation Of Alternatives To Conventional Polymer Modification For Asphalt written by Stacey Diefenderfer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Binders (Materials) categories.
The Virginia Department of Transportation (VDOT) specifies polymer-modified asphalt binders for certain asphalt mixtures used on high-volume, high-priority routes. These binders must meet performance grade (PG) requirements for a PG 76-22 binder in addition to elastic recovery requirements. This typically results in the use of binders containing styrene-butadiene-styrene (SBS) modifiers. However, other polymer modifiers may also be used to achieve the PG 76-22 classification. One of these modifiers is a copolymer of SBS and polyethylene (PE) (SBS-PE) another modifier is ground tire rubber (GTR). This study was undertaken to investigate the suitability of SBS PE modified PG 76-22 binder and GTR-modified PG 76-22 binder for use in Virginia. Each modified binder was used in a 12.5 mm nominal maximum aggregate size mixture to pave approximately 2.3 lane-miles. All mixtures were produced as warm mix asphalt using a foaming system. The binders evaluated included a typical SBS polymer-modified binder as a control and binders modified with SBS-PE and GTR. During construction, all processes were documented and material was sampled for evaluation. Binder and mixture tests were performed. Binder testing included performance grading and multiple stress creep and relaxation testing. Mixture testing included volumetric analysis, dynamic modulus, and flow number tests and cracking, rutting, and fatigue analysis. Binder testing indicated that the control binder and SBS PE modified binders met VDOT specifications for classification as a PG 76-22 binder; the GTR-modified binder graded to a PG 70-22 binder, as it did not meet the PG 76-22 high-temperature specification and did not pass the elastic recovery requirement. Laboratory mixture testing indicated that the performance of the SBS PE modified mixture should be similar to that of the control mixture. Laboratory test results for the GTR-modified mixture were mixed, with some indicating that the performance was similar to that of the control mixture and some indicating that the performance may be less than that of the control. Based on the study, SBS PE modified binders should continue to be allowed as an alternative to SBS-modified binder provided specifications for PG 76-22 binders are met. However, further investigation of GTR-modified binders is suggested before recommendations can be made. In addition, long-term evaluation of the field site is recommended for validation of the laboratory findings.
Polymer Modified Asphalt Binders
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Author : Kenneth R. Wardlaw
language : en
Publisher: ASTM International
Release Date : 1992
Polymer Modified Asphalt Binders written by Kenneth R. Wardlaw and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Asphalt categories.
"ASTM Publication Code Number (PCN) 04-011080-08. - "Sponsored by ASTM Committee D-4 on Road and Paving Materials."-- Foreword. - Includes bibliographical references and indexes. - Electronic reproduction; W. Conshohocken, Pa; ASTM International; 2011; Mode of access: World Wide Web; System requirements: Web browser; Access may be restricted to users at subscribing institutions.
Laboratory Evaluation Of Nanoclay Asphalt Binders
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Author : M M Tariq Morshed
language : en
Publisher:
Release Date : 2019
Laboratory Evaluation Of Nanoclay Asphalt Binders written by M M Tariq Morshed and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Asphalt categories.
The main goal of this study is to assess the feasibility of the use of nanoclay as an alternative to commonly used polymers such as styrene-butadiene-styrene (SBS), which are used to modify the performance grade (PG) of asphalt binders. Three types of nanoclay and two types of neat binders were selected for laboratory investigation. Different amounts (1, 2, and 3%) of nanoclays were used. A blending protocol was developed to mix the nanoclay with the asphalt binder. Penetration, Rotational Viscosity (RV), Dynamic Shear Rheometer (DSR), Multiple Stress Creep and Recovery (MSCR), Frequency Sweep (FS), Linear Amplitude Sweep (LAS), Optical Contact Analyzer (OCA), Texas Boiling Test, and Atomic Force Microscope (AFM) were conducted to evaluate the properties of modified asphalt binders. Significant increases of viscosity and complex shear modulus were observed for nanoclay-modified binders because of its nanoscale phenomena such as structural features, quantum effects, spacial confinement, and high surface energy.
Laboratory Evaluations Of Chemically Modified Asphalt And Comparison With Polymer Modified Asphalt
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Author : Hossein Ajideh
language : en
Publisher:
Release Date : 2004
Laboratory Evaluations Of Chemically Modified Asphalt And Comparison With Polymer Modified Asphalt written by Hossein Ajideh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
Evaluation Of Polymer Modified Asphalt In Hot Mix Pavements
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Author : Charles Ifft
language : en
Publisher:
Release Date : 1989
Evaluation Of Polymer Modified Asphalt In Hot Mix Pavements written by Charles Ifft and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Asphalt concrete categories.
Polymer modified asphalts have recently been the focus of much attention in the U.S. due to claims that polymer additives will lengthen the life of an asphalt pavement. Much of the published research on this topic has been concentrated on the effects of polymer modifiers on binder and mixture properties. The goal of this testing is to predict from laboratory testing the actual field performance of an asphalt concrete. Over the years, specifications have been developed for conventional asphalts that allow pavement performance to be predicted from certain binder tests. These conventional binder tests do not fully address the special characteristics of polymer modified asphalt binders and need revision to be an effective tool in predicting pavement service life. This paper presents the findings of a two-part laboratory research program intended to relate binder and mixture properties of polymer modified asphalts. The preliminary testing involved five asphalt binder types and a variety of binder and mixture tests. Promising test procedures were further investigated in the final testing program where ten asphalt binders were examined. Simple linear regression was used to determine the strength of a relationship between pairs of binder properties and mixture properties. The preliminary testing showed penetration, toughness and tenacity, and force ductility to have the most promise in predicting mixture performance. The final testing contained enough data to be analyzed with both simple linear regression and multiple regression. Penetration, toughness and tenacity, force ductility again were the test procedures that had binder properties that correlated well with mixture properties.
Synthesis Of Highway Practice
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Author : National Cooperative Highway Research Program
language : en
Publisher:
Release Date : 1999
Synthesis Of Highway Practice written by National Cooperative Highway Research Program and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Highway engineering categories.
Evaluation Of Modified Asphalt Binders
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Author : Ronald E. Reese
language : en
Publisher:
Release Date : 1989
Evaluation Of Modified Asphalt Binders written by Ronald E. Reese and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Binders (Materials) categories.