Effect of warm mix additives and dispersants on asphalt rheological, aging, and failure properties

► Warm mix additives can potentially increase pavement cracking. ► Paraffin inhibitors can potentially reduce thermal cracking. ► Effects are not easily predictable and hence best evaluated through improved performance testing. Warm mix additives, asphaltene dispersants, and other chemical modifiers...

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Veröffentlicht in:Construction & building materials 2012-12, Vol.37, p.493-498
Hauptverfasser: Ahmed, Eman I., Hesp, Simon A.M., Paul Samy, Senthil Kumar, Rubab, Syed D., Warburton, George
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container_end_page 498
container_issue
container_start_page 493
container_title Construction & building materials
container_volume 37
creator Ahmed, Eman I.
Hesp, Simon A.M.
Paul Samy, Senthil Kumar
Rubab, Syed D.
Warburton, George
description ► Warm mix additives can potentially increase pavement cracking. ► Paraffin inhibitors can potentially reduce thermal cracking. ► Effects are not easily predictable and hence best evaluated through improved performance testing. Warm mix additives, asphaltene dispersants, and other chemical modifiers are regularly added to asphalt to improve workability during construction, to increase the useful temperature interval in service, or to impart other benefits such as enhanced resistance to chemical aging or moisture damage. There is a scarcity of information on how most of these additives affect durability. This report discusses how commercial and developmental additives affect low strain rheological and high strain failure characteristics. It was found that several modifiers significantly changed both rheological and failure properties. Hence, care is warranted in order to assure an overall benefit from such technologies.
doi_str_mv 10.1016/j.conbuildmat.2012.07.091
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source Elsevier ScienceDirect Journals
subjects Analysis
Asphalt cement
Asphaltene dispersants
Chemical hardening
Chemical properties
Ductile failure
Fatigue
Fatigue testing machines
Materials
Mechanical properties
Physical hardening
Rheology
Warm mix additives
title Effect of warm mix additives and dispersants on asphalt rheological, aging, and failure properties
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