Evaluation of moisture susceptibility tests for warm mix asphalts

被引：34

作者：

Buss, Ashley ^{[1
]}

Williams, R. Christopher ^{[1
]}

Schram, Scott ^{[2
]}

机构：

[1] Iowa State Univ, Dept Civil Construct & Environm Engn, Ames, IA 50011 USA

[2] Off Mat, Iowa Dept Transportat, Ames, IA 50010 USA

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2016年 / 102卷

关键词：

Warm mix asphalt; Moisture conditioning; Aging; Stripping; Hamburg wheel tracking test; RAP;

D O I：

10.1016/j.conbuildmat.2015.11.010

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Moisture sensitivity has been identified as an area of concern for warm mix asphalt (WMA) mixtures. To evaluate WMA's influence on moisture damage, three field-produced mixes were selected for evaluation. All WMA mixes studied used the same chemical WMA additive. The objectives are to compare hot-mix and WMA performance in moisture susceptibility tests, compare indirect tensile strength and Hamburg performance of pavement-cores and laboratory compacted samples, investigate reheating effect of WMA compared to hot-mix asphalt for quality-control purposes, and understand the sensitivity of WMA's stripping inflection point to oven-aging time and temperatures. Tests indicate pavement-cores performed better than gyratory samples in the Hamburg. Trends indicate Hamburg results are dependent upon temperature and higher temperatures correlate with better performance. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：358 / 366

页数：9

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[2]

AASHTO, 2007, T28307 AASHTO

[3]

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