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Effectiveness Of Antistripping Additives In The Field
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Book Synopsis Effectiveness of Antistripping Additives in the Field by : G. W. Maupin
Download or read book Effectiveness of Antistripping Additives in the Field written by G. W. Maupin and published by . This book was released on 1995 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stripping has long been recognized as a cause of asphalt pavement damage. Water may get between the asphalt film and the aggregate surface, causing an adhesive failure, or water may combine with the asphalt to affect the cohesive strength of the material. Various types of antistripping additives have been used in the attempt to alleviate or eliminate stripping. The Virginia Department of Transportation has used antistripping additives in some of its asphalt mixes since the 1960's. In the 1980's hydrated lime was found to outperform several al chemical additives. VDOT began to require asphalt contractors to use chemical additives that produced test results equal or superior to hydrated lime. Presumably, chemical additives were then improved to compete with hydrated lime. This study was undertaken to find if the new generation of additives prevented stripping in Virginia's hot mix asphalt. Twelve test sections were established, 9 using chemical additives and 3 containing hydrated lime. After 3 to 4 years, eight of the sections containing chemical additive demonstrated considerable visual stripping in cores. The sections containing hydrated lime showed much less stripping. The TSR test used on mix sampled during construction did not accurately predict the stripping that occurred. A follow-up survey of existing pavements should be conducted to verify the possible inadequacy of some chemical additives. Also, the TSR test should be examined and possibly modified to more closely duplicate Virginia's environmental conditions.
Book Synopsis Follow-up Field Investigation of the Effectiveness of Antistripping Additives in Virginia by : G. W. Maupin
Download or read book Follow-up Field Investigation of the Effectiveness of Antistripping Additives in Virginia written by G. W. Maupin and published by . This book was released on 1997 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: A previous field study of 12 pavements revealed considerable stripping in the surface layers of mixtures placed in 1991-92. Most of the mixes containing chemical additives showed visual stripping, but the ones containing hydrated lime did not show significant stripping. This study was a broad field survey with cores taken from each of the nine VDOT districts. The purpose was to get a better estimate of stripping in Virginia than that of the earlier study. Significant visual stripping was detected in many sites, which verified the fmdings of the earlier study. However, in this study, hydrated lime performed no better than chemical additives. The SM-2A 50-blow mixes with slightly more asphalt performed no better than the SM-2B or SM-2C 75-blow mixes. Pavement voids at many sites were too high for good durability, and the compaction and mix design specifications should be examined. The degree of stripping damage in underlying layers could influence performance at many sites.
Book Synopsis Use of Antistripping Additives in Asphaltic Concrete Mixtures by : David G. Tunnicliff
Download or read book Use of Antistripping Additives in Asphaltic Concrete Mixtures written by David G. Tunnicliff and published by Transportation Research Board. This book was released on 1995 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Anti-stripping Additives for Asphaltic Concrete Mixes Effectiveness and Recommended Usage by : Fred Field
Download or read book Evaluation of Anti-stripping Additives for Asphaltic Concrete Mixes Effectiveness and Recommended Usage written by Fred Field and published by . This book was released on 1977 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Antistripping Additives by : G. W. Maupin
Download or read book Evaluation of Antistripping Additives written by G. W. Maupin and published by . This book was released on 1989 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several chemical antistripping additives were used in field installations and compared to a similar installation using hydrated lime. The performance of the installations was monitored periodically, and material that was sampled during construction was tested in the laboratory. The cores of mixes with less visual stripping showed a gradual increase in strength and stiffness with time, whereas mixes with considerable stripping showed little, if any, increase. Two additives influenced the viscosity of the asphalt significantly, thereby requiring the lowering of the required mixing and compaction temperatures.
Book Synopsis Use of Antistripping Additives in Asphaltic Concrete Mixtures by :
Download or read book Use of Antistripping Additives in Asphaltic Concrete Mixtures written by and published by . This book was released on 1964 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Literature Review of Liquid Antistripping and Tests for Measuring Stripping by : Christine W. Curtis
Download or read book A Literature Review of Liquid Antistripping and Tests for Measuring Stripping written by Christine W. Curtis and published by . This book was released on 1990 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this literature review is to search the literature in the area of chemical and mineral agents used to promote adhesion of asphalt-aggregate mixes. In addition, tests performed to measure the effectiveness of these agents were reviewed. The information gained through this literature search and review provides background information for the research being performed in the SHRP A-003B contract. This literature search was performed using on-line chemical abstracts for documents in the time period of 1967 to present.
Book Synopsis Evaluation of Stripping and Moisture Damage in Asphalt Pavements Treated with Lime and Antistripping Agents by : W. Virgil Ping
Download or read book Evaluation of Stripping and Moisture Damage in Asphalt Pavements Treated with Lime and Antistripping Agents written by W. Virgil Ping and published by . This book was released on 1991 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the results of determining the moisture susceptibility by the primary test methods: (a) Original Lottman Method. (b) Modified Lottman Method (Tex-531-C); (c) Tunniclif f-Root Method; and (d) Boiling Test (Tex-530-C). Comparisons were made between the laboratory mixtures, plant mixtures, and cores obtained from the field test sections to determine the effectiveness of the various antistripping additives and to evaluate the various methods for measuring that effectiveness.
Book Synopsis Long-term Evaluation of Stripping and Moisture Damage in Asphalt Pavements Treated with Lime and Antistripping Agents by : Mansour Solaimanian
Download or read book Long-term Evaluation of Stripping and Moisture Damage in Asphalt Pavements Treated with Lime and Antistripping Agents written by Mansour Solaimanian and published by . This book was released on 1993 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the results of a long-term field evaluation of the effectiveness of lime and various antistripping agents. This research study was a continuation of the research carried out between 1986 and 1991 (documented in CTR Research Reports 441-1 and 441-2F). Core samples were obtained from the field test sections and tested in the laboratory based on Test Methods Tex-531-C and AASHTO T283. Test results did not indicate any consistent pattern with regard to effectiveness of certain antistripping additives versus others. The field test sections, treated with antistripping agents and built in eight districts of the Texas Department of Transportation, were monitored for signs of distress during the course of the research study.
Book Synopsis Effectiveness of Antistripping Additives: Final report by :
Download or read book Effectiveness of Antistripping Additives: Final report written by and published by . This book was released on 1989 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laboratory Evaluation of Anti-strip Additives in Hot Mix Asphalt by : Bradley J. Putnam
Download or read book Laboratory Evaluation of Anti-strip Additives in Hot Mix Asphalt written by Bradley J. Putnam and published by . This book was released on 2006 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of hydrated lime or other liquid anti stripping agents (ASA) is the most common method to improve the moisture susceptibility of asphalt mixes. However, most laboratory test conditions used to evaluate the moisture susceptibility of the mixes are only for a short duration of time. This might not be a good representation of the field conditions (i.e., several months or years of service). Thus, a study to evaluate the effects of conditioning the mixes for longer durations was initiated. Also, another problem with the use of the liquid anti stripping agents is their heat storage stability. This report addresses these two issues, by preparing and testing mixtures made with fresh binder for indirect tensile strength after conditioning the samples for 1, 7, 28, 90 and 180 days, and samples prepared from binder stored for three days at 160° C after conditioning them for 1, 28 and 90 days. The results of this study indicated that hydrated lime and the liquid anti stripping agents were equally effective for the mixes used in this research when conditioned beyond one day. In the case of samples prepared from stored binder, there was no significant difference in the effectiveness of hydrated lime and the liquid anti stripping agents even after conditioning for one day. Though it was observed that none of the ASA treatments performed better than others in the case of samples prepared with stored binder, it was also observed that almost all mixes gave significantly similar wet ITS and TSR values as samples prepared from fresh binder.
Book Synopsis Field Evaluation of Stripping and Moisture Damage in Asphalt Pavements Treated with Lime and Antistripping Agents by : Ming-Jen Liu
Download or read book Field Evaluation of Stripping and Moisture Damage in Asphalt Pavements Treated with Lime and Antistripping Agents written by Ming-Jen Liu and published by . This book was released on 1991 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarized the results of field evaluation of the effectiveness of lime and various antistripping additives using the following methods: (a) Modified Lottman Method (Tex-531-C) and (b) Boiling Test (Tex-530-C). Core samples were obtained from the field test sections up to 48 months after construction. Field data to date show very little evidence of distress which is directly related to moisture damage or stripping. This was anticipated due to the slow rate of moisture ingress under adequate construction compaction.
Download or read book Public Roads written by and published by . This book was released on 1991 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Asphalt Materials Science and Technology by : James G. Speight
Download or read book Asphalt Materials Science and Technology written by James G. Speight and published by Butterworth-Heinemann. This book was released on 2015-10-01 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphalt is a complex but popular civil engineering material. Design engineers must understand these complexities in order to optimize its use. Whether or not it is used to pave a busy highway, waterproof a rooftop or smooth out an airport runway, Asphalt Materials Science and Technology acquaints engineers with the issues and technologies surrounding the proper selection and uses of asphalts. With this book in hand, researchers and engineering will find a valuable guide to the production, use and environmental aspect of asphalt. Covers the Nomenclature and Terminology for Asphalt including: Performance Graded (PG) Binders, Asphalt Cement (AC), Asphalt-Rubber (A-R) Binder, Asphalt Emulsion and Cutback Asphalt Includes Material Selection Considerations, Testing, and applications Biodegradation of Asphalt and environmental aspects of asphalt use
Book Synopsis Handbook of Petroleum Product Analysis by : James G. Speight
Download or read book Handbook of Petroleum Product Analysis written by James G. Speight and published by John Wiley & Sons. This book was released on 2015-02-02 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduces the reader to the production of the products in a refinery • Introduces the reader to the types of test methods applied to petroleum products, including the need for specifications • Provides detailed explanations for accurately analyzing and characterizing modern petroleum products • Rewritten to include new and evolving test methods • Updates on the evolving test methods and new test methods as well as the various environmental regulations are presented
Book Synopsis Stripping of Asphalt Concrete by : Frazier Parker
Download or read book Stripping of Asphalt Concrete written by Frazier Parker and published by . This book was released on 1987 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The freeze thaw stress pedestal test, the boil test and the indirect tensile test were evaluated for assessing the stripping potential of typical Alabama asphalt concrete mixes and the effectiveness of antistripping additives. This was accomplished by testing surface and base/ binder mixes with five aggregate combinations, two sources of asphalt cement and three antistripping additives. Because of the test complexity and lack of a strong correlation with stripping performance, the freeze thaw stress pedestal test is not recommended. The boil and indirect tensile tests, in combination, offer a viable, although, imperfect, system for stripping evaluation. The lack of a strong correlation with reported field performance detracts from both tests. However, the imprecise and subjective nature of the reported performance and the correlations obtained by others are mitigating factors.
Book Synopsis Special Report - Highway Research Board by : National Research Council (U.S.). Highway Research Board
Download or read book Special Report - Highway Research Board written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1968 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
