期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 184, 期 -, 页码 515-523出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2018.07.013
关键词
Brake pad waste; Cement emulsified asphalt mixture; Early-curing behavior; Moisture resistance; Overlay tester; Repeated semi-circular bending test
资金
- Science Project of Department of Education of Hubei Province [B2017056]
- Science and Technology Project of Department of Transportation of Hubei Province [2017-538-1-10]
- Science Foundation of Wuhan Institute of Technology [K201846]
- Open Fund of State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology [SYS112018-22]
This paper aims to investigate the feasibility of using brake pad waste (BPW) in cement emulsified asphalt mixture (CEAM). The effects of BPW filler on early-stage strength, mechanical properties and durability of CEAM were experimentally studied, while mixtures with basic oxygen furnace (BOF), fly ash (FA), hydrated lime (HL) and conventional limestone filler (LF) were prepared and tested as comparison. Results indicate that strength of BPW mixture in early stage and after fully cured are smaller than that for the contrasting mixtures with common by-product fillers. The reason might be that BPW filler has no significant effect on hydration reaction of cement, due to its non-active characteristic. However, the engineering performance of BPW mixture is comparable to that with artificial by-product fillers. Moreover, result of dynamic modulus test implies that the temperature and frequency dependence of CEAM is weaker than the HMA. And there is no obvious difference in viscoelastic characteristics of CEAM mixes using various fillers concerned. The research demonstrates that BPW filler can be used as an alternative material for mineral filler in CEAM. (C) 2018 Elsevier Ltd. All rights reserved.
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