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Название Effect of elastomer polymer on the moisture susceptibility of asphalt concrete // Magazine of Civil Engineering. – 2022. – № 1 (109). — С. 10901
Авторы Shabani A. ; Hamedi Gh. H.
Выходные сведения 2022
Коллекция Общая коллекция
Тематика Транспорт ; Автомобильные дороги ; asphalt concrete ; moisture resistance of asphalt concrete ; polymers ; elastomeric polymers ; road surface strength ; cyclic loads ; асфальтобетоны ; влагостойкость асфальтобетонов ; полимеры ; эластомерные полимеры ; прочность дорожных покрытий ; циклические нагрузки
УДК 625.7/8
ББК 39.31/32
Тип документа Статья, доклад
Тип файла PDF
Язык Английский
DOI 10.34910/MCE.109.1
Права доступа Свободный доступ из сети Интернет (чтение, печать, копирование)
Ключ записи RU\SPSTU\edoc\68009
Дата создания записи 25.03.2022

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There are various experimental methods for improving the moisture strength of asphalt concrete, such that the most common one being the use of anti-stripping materials. In the present paper, the influences of polymer materials on\ asphalt binder were investigated using repetitive loading test in wet and dry conditions along with thermodynamic parameters based on the surface free energy (SFE) components of asphalt binder and aggregates. The obtained results of this investigation indicate that using styrene butadiene rubber (SBR) polymer has improved the asphalt concrete strength against the moisture damage, especially in the specimens made of granite aggregates. Also, SBR polymer increases the cohesion free energy and reduces the energy released by the system during the stripping event, which represents a decrease in the tendency for stripping. The stripping percentage index, which is obtained by combining the results of the repetitive loading test in wet and dry conditions along with the results of thermodynamic parameters, represents that the specimens made of controlled asphalt binder in the loading cycles under wet conditions have a higher stripping rate. Also, the modulus loss rate in control asphalt concrete is faster than the modified specimens.

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  • Effect of elastomer polymer on the moisture susceptibility of asphalt concrete
    • 1. Introduction
    • 1.1. Previous studies
    • 1.2. SFE theory
    • 1.3. Problem statement and research objectives
    • 2. Methods
      • 2.1. Designing an experimental program
      • 2.2. Materials
      • 2.2.1. Aggregate
      • 2.2.2. Asphalt binder
      • 2.2.3. SBR polymer
      • 2.3. Laboratory Studies
      • 2.3.1. Asphalt binder modification
      • 2.3.2. Mix design
      • 2.3.3. Repetitive loading test
      • 2.3.4. Measuring the SFE components of aggregate and asphalt binder
      • 2.3.4.1. Measuring the SFE components of aggregates
      • 2.3.4.2. Measuring SFE components of asphalt binder
    • 3. Results and Discussion
      • 3.1. Mix design
      • 3.2. SFE tests
      • 3.2.1. Measuring the SFE components of aggregates
      • 3.2.2. Measuring the SFE components of asphalt binders
      • 3.2.3. Thermodynamic parameters
      • 3.3. Repetitive loading tests
      • 3.4. Stripping percentage of the aggregates in loading cycles
    • 4. Conclusions

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