A comprehensive evaluation of moisture damage of asphalt concrete mixtures

2015 ◽  
Vol 18 (2) ◽  
pp. 169-182 ◽  
Author(s):  
Peter E. Sebaaly ◽  
Elie Y. Hajj ◽  
Thileepan Sathanathan ◽  
Sivakulan Shivakolunthar
Keyword(s):  
Asphalt Concrete ◽  
Comprehensive Evaluation ◽  
Moisture Damage ◽  
Concrete Mixtures

Identification of Moisture-Susceptible Asphalt Concrete Mixes Using Modified Environmental Conditioning System

1998 ◽  
Vol 1630 (1) ◽  
pp. 106-116 ◽  
Author(s):  
Muhammad Murshed Alam ◽  
Vivek Tandon ◽  
Soheil Nazarian ◽  
Maghsoud Tahmoressi
Keyword(s):  
Laboratory Test ◽  
Asphalt Concrete ◽  
Comprehensive Evaluation ◽  
Test Methods ◽  
Test Method ◽  
Distinct Advantage ◽  
Preliminary Evaluation ◽  
Environmental Conditioning ◽  
Concrete Mixtures ◽  
Laboratory Test Method

Moisture damage is a common problem faced by highway agencies. Researchers have developed laboratory test methods over the years to identify moisture-susceptible asphalt concrete mixtures, but none of them has been consistently successful. A new laboratory test method, the Environmental Conditioning System, was developed under the Strategic Highway Research Program. This new test method has a distinct advantage over the existing methods because it can simulate field conditions. However, a comprehensive evaluation of the method showed that although it is a promising concept, it needs further modification and evaluation. In this paper, several modifications to the original Environmental Conditioning System are proposed. The results from a preliminary evaluation of the system are also included. The new system has been able to identify poor and marginally performing mixtures.

scholarly journals Effect of carbon nanotubes on the properties of pmb and asphalt concrete

Vestnik MGSU ◽  
2015 ◽  
pp. 110-119 ◽  
Author(s):  
Svetlana Yur’evna Shekhovtsova ◽  
Marina Alekseevna Vysotskaya
Keyword(s):  
Asphalt Concrete ◽  
Water Resistance ◽  
Materials Science ◽  
Crosslinking Agent ◽  
Modern World ◽  
Progressive Development ◽  
Concrete Mixtures ◽  
Deformation Properties ◽  
Strength And Deformation ◽  
Modified Binder

In the modern world nanotechnologies are an integral part of successful and progressive development of all the areas of activity. Materials science is not an exception. The authors studied the method of nanomodification and its influence on the performance properties of polymer-modified binder (PMB) and asphalt concrete, produced on their basis. It is established that nanomodified PMB are less susceptible to aging, which is a consequence of the processes of peptization of asphalt-resin complexes (ARC) in the structure of the modified binder and the crosslinking with the polymer matrix. It is revealed that nanotubes (SWCN or MWCN) used as a modifier, act as crosslinking agent and the inhibitor of the aging process in a PMB. The influence of nanomodified PMB on strength and deformation properties of asphalt concrete is investigated. It was found out that the use of modified binder in the asphalt concrete mixtures enhances the water resistance of asphalt concrete, heat resistance and shear-resistance.

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