Strength formation mechanism and performance of steel slag self-compacting epoxy resin concrete

被引：12
|
作者：
Li, Yuanyuan [1 ]
Li, Jun [1 ]
Li, Chao [2 ]
Chen, Anqi [3 ]
Bai, Tao [1 ]
Tang, Shimin [1 ]
Wu, Shaopeng [3 ]
Gao, Yangming [4 ]
Zhu, Hongbin [1 ]
Feng, Jianlin [1 ]
机构：
[1] Wuhan Inst Technol, Sch Civil Engn & Architecture, Wuhan 430074, Peoples R China
[2] Foshan Transportat Sci & Technol Co Ltd, Foshan 528315, Guangdong, Peoples R China
[3] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Hubei, Peoples R China
[4] Delft Univ Technol, Fac Civil Engn & Geosci, Marie S Curie Res Fellow Sect Pavement Engn, Stevinweg 1, NL-2628 Delft, Netherlands
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2022年 / 359卷
基金：
欧盟地平线“2020”;
关键词：
Steel slag; Road expansion joints; Pavement repair; Micro morphology; Actual engineering verification; DESIGN;
D O I：
10.1016/j.conbuildmat.2022.129525
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A self-compacting steel slag epoxy resin concrete (SERC) was designed with steel slag as aggregate and epoxy resin as binder for rapid repair of road expansion joints and pavement. At the same time, a group of self -compacting basalt epoxy resin concrete (BERC) with basalt as coarse aggregate and limestone as fine aggre-gate was set up as the control group. The element analysis and micro morphology of SERC and BERC were studied by X-ray fluorescence spectrometry (XRF) and scanning electron microscope (SEM) to reveal the strength-forming mechanism of the two epoxy resin concretes. The cube compression test and Marshall stability test were used to study the effect of the strength formation rate and temperature of SERC and BERC on the strength. In addition, the high-temperature stability, low-temperature crack resistance, water damage resistance, fatigue resistance and interlayer bonding properties of SERC and BERC were also studied. The results showed that both SERC and BERC have good mechanical properties, high temperature properties and good bonding properties, and the low-temperature crack resistance and fatigue properties of SERC are better than that of BERC. According to the verification of the actual project that has been in service for one year, SERC can be perfectly used for road expansion joints.
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页数：16
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