Engineering behavior of aged polypropylene-modified asphalt pavements

被引：29
|
作者：
Al-Hadidy, A. I. [1 ]
机构：
[1] Univ Mosul, Dept Civil Engn, Mosul, Iraq
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 191卷
关键词：
Aging; Asphalt; Polypropylene; Tensile strength; Resilient modulus; Cracking index; Extensional viscosity; SBS MODIFIED ASPHALT;
D O I：
10.1016/j.conbuildmat.2018.10.007
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
An investigation was executed to determine the influence of laboratory aging on the engineering characteristics of polypropylene-modified concrete mixtures (PPMCMs) utilizing different experiments. The design bitumen content was obtained for dense mixture by the Marshall method using aggregate blends which conformed to the American Standard for Testing and Materials, ASTM (D-3515). Marshall stability, Marshall modulus of stiffness, indirect tensile strength, tensile strength ratio, resilient moduli, aging index, cracking index, and extensional viscosity of the aged PPMCMs at temperature of 100 degrees C and at two aging levels between 48 and 96 h are used to evaluate the performance change of PPMCMs. The PPMCMs achieve the ASTM specified limits; they reveal superior durability, elasticity, and adhesive characteristics with higher resistance to permanent deformation and moisture damage. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：187 / 192
页数：6
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