Effect of Vehicle‑Bridge Coupled Vibration on Interface Bond Performance between Steel Fiber and Magnesium Phosphate Cement Mortar

被引：0
|
作者：
Gao G. [1 ,2 ]
Chen D. [3 ]
Wang S. [1 ,2 ]
Liu S. [1 ,2 ]
Yang Z. [1 ,2 ]
机构：
[1] Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai
[2] School of Materials Science and Engineering, Tongji University, Shanghai
[3] Guangdong Provincial Highway Co., Ltd., Guangzhou
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2022年 / 25卷 / 04期
关键词：
Interface bond performance; Magnesium phosphate cement; Pore structure; Steel fiber; Vehicle‑bridge coupled vibration;
D O I：
10.3969/j.issn.1007-9629.2022.04.004
中图分类号：
学科分类号：
摘要：
An ultra‑early‑strength fiber‑reinforced magnesium phosphate cement(MPC)was prepared. The influence of the amplitude and frequency of vehicle‑bridge coupling vibration on the interface performance and microstructure between steel fiber and MPC was systematically analyzed through the study of fiber pullout performance and pore structure. The results show that the bond performance between steel fiber and MPC based materials increases at first and then decreases with the increase of amplitude and frequency. Compared with the static condition, when the amplitude is 2, 3 mm and the frequency is 3, 6 Hz, the maximum bond strength and pullout energy between steel fiber and MPC mortar increase maximumly. Under a certain degree of vibration, the porosity of MPC mortar can be reduced, the macroscopic pores can be refined, and the interface bond performance between steel fiber and MPC mortar can be optimized. © 2022, Editorial Department of Journal of Building Materials. All right reserved.
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页码：353 / 359
页数：6
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