Effect of Basalt Fiber Surface Modification on Mechanical Properties of Concrete

被引：0
|
作者：
Du, Changbo [1 ]
Zhu, Minghao [1 ]
Yi, Fu [1 ,2 ]
Tao, Han [1 ]
Sun, Di [3 ]
机构：
[1] Department of Civil Engineering, Liaoning Engineering University, Fuxin,123000, China
[2] Beijing Jingneng Geology Co.，Ltd., Beijing,102300, China
[3] Liaoning Transportation Planning and Design Institute, Shenyang,110166, China
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2024年 / 27卷 / 07期
关键词：
Cracks - Fiber reinforced plastics - Gluing;
D O I：
10.3969/j.issn.1007-9629.2024.07.001
中图分类号：
学科分类号：
摘要：
Basalt fiber（BF）was modified by coupling agent （KH550）and nano-SiO2，and the effect of BF surface modification on the mechanical properties of basalt fiber reinforced concrete（BFRC）was studied. The results show that after modification with KH550 and nano-SiO2，the surface of BF forms C—H bonds，and the vibration peak corresponding to Si—O—Si bonds becomes stronger. When the amount of nano-SiO2 is 3% of the mass of BF，the morphology of BF changes most significantly，and the mechanical strength and crack resistance of modified BFRC are significantly higher than those of ordinary BFRC. Under the bridging effect of KH550，nano-SiO2 can effectively enhance the bonding strength between fibers and the concrete matrix，thereby improving the mechanical strength and crack resistance of BFRC © 2024 Tongji University. All rights reserved.
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页码：573 / 579
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