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Author :
Publisher :
ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.3/5 (555 download)
Download or read book Effectiveness of Antistripping Additives: Literature review written by and published by . This book was released on 1989 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christine W. Curtis
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (359 download)
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.
Author :
Publisher :
ISBN 13 :
Total Pages : 94 pages
Book Rating : 4.3/5 (555 download)
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:
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (855 download)
Download or read book Effectiveness of Antistripping Additives written by and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. W. Maupin
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (359 download)
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.
Author : G. W. Maupin
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (364 download)
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.
Author : G. W. Maupin
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (669 download)
Download or read book Influence of Handling on the Effectiveness of Antistripping Additives written by G. W. Maupin and published by . This book was released on 1980 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this investigation was to determine the influence of the procedures used in handling asphalt-additive blends on the effectiveness of antistripping additives in asphaltic concrete. The additives were blended with the asphalt cements before shipment by tank truck to the hot mix plants. Laboratory tests were performed on samples of the asphalt cement obtained prior to the blending process at the terminal and after blending and shipment by tank truck to the hot mix plant. Quick bottle tests and infrared spectrophometer tests were used to determine the presence and approximate amount of additive, respectively. A stripping test was performed to determine the effectiveness of the additive. The results of this limited investigation indicate that the present procedure of blending asphalt and antistripping additive before shipment to the hot mix plant is satisfactory; however, long periods of storage at high temperatures might cause the additive to lose part of its effectiveness.
Author : David G. Tunnicliff
Publisher : Transportation Research Board National Research
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.3/5 (555 download)
Download or read book Use of Antistripping Additives in Asphaltic Concrete Mixtures written by David G. Tunnicliff and published by Transportation Research Board National Research. This book was released on 1984 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.3/5 (243 download)
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:
Author : Christine W. Curtis
Publisher :
ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (247 download)
Download or read book A Literature Review of Liquid Antistripping Agents, Mineral Additives and Tests for Measuring Stripping written by Christine W. Curtis and published by . This book was released on 1990 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bradley J. Putnam
Publisher :
ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.:/5 (1 download)
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.
Author : H. H. Yoon
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)
Download or read book Thermal Degradation Properties of Antistripping Additives and Enhanced Performance by Curing written by H. H. Yoon and published by . This book was released on 1987 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented at the Annual Meeting, Washington, DC, Jan 1987.
Author : G. W. Maupin
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (23 download)
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.
Author : P. Hao
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (125 download)
Download or read book A Laboratory Study of the Effectiveness of Various Additives on Moisture Susceptibility of Asphalt Mixtures written by P. Hao and published by . This book was released on 2006 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antistripping additives are used routinely to improve water resistance of asphalt mixtures. Different additives have different improvement effectiveness in water resistance. In this study, the effects of various additives on the moisture susceptibility of asphalt mixture are studied with the retained Marshall stability test, Lottman test, and immersion wheel tracking test. Asphalt mixtures were modified with Portland cement, hydrated lime, lime slurry, and liquid antistripping agents. The results show that the lime-slurry-treated asphalt mixtures have better resistance to moisture susceptibility than mixtures treated with other materials, and have better long-term moisture stability than the liquid antistripping agents. The liquid-antistripping-agent-treated asphalt mixtures have better resistance to moisture stability before long-term aging. Portland-cement-treated asphalt mixtures show slightly improved water resistance. Asphalt mixtures become more resistant to moisture damage through short-term aging. It was confirmed that the Lottman and the immersion tracking methods are better methods to evaluate moisture susceptibility than the retained Marshall stability methods.
Author : G. W. Maupin
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (213 download)
Download or read book Use of Hydrated Lime as an Antistripping Additive written by G. W. Maupin and published by . This book was released on 1983 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this investigation is to evaluate the effectiveness of hydrated lime as an antistripping additive in several test sections. The two sections installed in 1982 contain S-5 surface mixes with (1) hydrated lime, (2) a chemical additive, and (3) no additive. Stripping tests on the mixes have predicted that those containing hydrated lime are less susceptible to stripping than the identical mixes with conventional chemical additives. The construction of at least two additional test sections is planned for 1983.
Author : W. Virgil Ping
Publisher :
ISBN 13 :
Total Pages : 646 pages
Book Rating : 4.:/5 (1 download)
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.
Author : WV. Ping
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (125 download)
Download or read book Statistical Evaluation of Additive Effectiveness in Asphalt Paving Mixtures written by WV. Ping and published by . This book was released on 1994 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphalt pavements are susceptible to moisture damage. One of the procedures to eliminate or minimize the damage is to treat the asphalt paving mixtures with an antistripping agent such as hydrated lime or other commercially available antistripping additives. Statistical analysis is essential to evaluate the effectiveness of various treatments in asphalt mixtures. This paper summarizes a research study to evaluate the effectiveness of asphalt treatments utilizing statistical pairwise comparisons. The approach is to use the boiling test results to do the statistical comparison.
