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

Journal article (2022)

Authors

Yuanyuan Li Wuhan Institute of Technology
Jun Li Wuhan Institute of Technology
Chao Li Foshan Transportation Science and Technology Co.
Anqi Chen Wuhan University of Technology
Tao Bai Wuhan Institute of Technology
Shimin Tang Wuhan Institute of Technology
Shaopeng Wu Wuhan University of Technology
Y. Gao Pavement Engineering - CEG
Hongbin Zhu Wuhan Institute of Technology
Jianlin Feng Wuhan Institute of Technology
Research Group
Pavement Engineering (CEG) (TU Delft)
Copyright: © 2022 Yuanyuan Li, Jun Li, Chao Li, Anqi Chen, Tao Bai, Shimin Tang, Shaopeng Wu, Y. Gao, Hongbin Zhu, Jianlin Feng
DOI
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https://doi.org/10.1016/j.conbuildmat.2022.129525
Steel slag Actual engineering verification Micro morphology Pavement repair Road expansion joints
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Published Date

2022

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Engineering Structures

Research Group

Pavement Engineering

Abstract

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 aggregate 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.