Friction and fracture characteristics of engineered crumb-rubber concrete at microscopic lengthscale

被引：33

作者：

Akono, Ange-Therese ^{[1
,2
,3
]}

Chen, Jiaxin ^{[3
]}

Kaewunruen, Sakdirat ^{[4
,5
]}

机构：

[1] Northwestern Univ, Dept Civil & Environm Engn, 2145 Sheridan Rd TECH A132, Evanston, IL 60208 USA

[2] Univ Illinois, Dept Mech Sci & Engn, Urbana, IL 61801 USA

[3] Univ Illinois, Dept Civil & Environm Engn, Urbana, IL 61801 USA

[4] Univ Birmingham, Sch Engn, Dept Civil Engn, Birmingham B15 2TT, W Midlands, England

[5] Univ Birmingham, Sch Engn, Birmingham Ctr Railway Res & Educ, Birmingham B15 2TT, W Midlands, England

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 175卷

关键词：

Crumb-rubber concrete; Scratch tests; Hardness; Friction; Fracture toughness; LATERAL FORCE MICROSCOPY; SCRATCH TEST; ATOMIC-FORCE; NORMAL LOAD; CEMENT; BEHAVIOR; CONTACT; ASPHALT; MODEL; TIRE;

D O I：

10.1016/j.conbuildmat.2018.04.141

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Using small-scale depth-sensing techniques, we investigate the friction and hardness of engineered crumb rubber-reinforced concrete with applications into railway sleeper ties. The partial replacement of aggregates with crumb rubber particle leads to an increase in the friction coefficient and the fracture toughness, and a slight decrease in strength properties. Moreover, improper bonding at the cement/rubber interface is shown to result in poor strength characteristics. Furthermore, crumb rubber particles contribute to a higher durability as evidenced by sustained high values of the friction coefficient even in presence of surface lubrication with water or oil. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：735 / 745

页数：11

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