Tensile Mechanical Properties of Basalt Textile Reinforced Highly Ductile Concrete

被引：0
|
作者：
Deng M. [1 ]
Wei D. [1 ]
Zhang W. [1 ]
Dong Z. [2 ]
Yang S. [3 ]
Fan H. [4 ]
机构：
[1] School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an
[2] College of Architecture and Civil Engineering, Shangqiu Normal University, Shangqiu
[3] Shanghai Key Laboratory of Engineering Structure Safety, Shanghai Research Institute of Building Sciences Co. Ltd., Shanghai
[4] Xi’an Wuhe New Civil Engineering Material Co. Ltd., Xi’an
来源：
Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences | 2023年 / 50卷 / 09期
基金：
中国国家自然科学基金;
关键词：
basalt textile; composite materials; highly ductile concrete; mesh spacing; tensile properties;
D O I：
10.16339/j.cnki.hdxbzkb.2023106
中图分类号：
学科分类号：
摘要：
To study the tensile mechanical properties of basalt textile reinforced highly ductile concrete（TR-HDC），36 sets of TR-HDC dog-bone tensile specimens were designed and manufactured. The effects of the textile reinforcing ratio，PVA short fiber content，matrix type and mesh spacing（5mm，10mm）on the tensile mechanical properties of TR-HDC were studied through uniaxial tensile tests. The research results showed that with the increase of the textile reinforcing ratio，the tensile strength of the TR-HDC specimens were significantly improved，and the multi-cracking characteristics were obvious. The adding of PVA short fiber effectively improved the interface property between textile and matrix，which prevented the stripping of base，reducing the slip between textile and matrix. Thus，the strength utilization rate of textile were improved. As the mesh spacing increased，the PVA short fiber can easily pass through the mesh and fully contact with the fiber bundle. This effect increased mechanical anchorage between textile and matrix，thus contributing to the improvement the strength utilization rate of the textile. The change of fly ash admixture in the matrix had little effect on the tensile strength of TR-HDC specimens，while the specimens with more fly ash content showed larger strain and smaller crack spacing. Based on regression analysis of the test results，the simplified TR-HDC uniaxial tensile strength calculation model is proposed by considering the coupling effect of PVA short fiber content and textile reinforcing ratio. © 2023 Hunan University. All rights reserved.
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页码：97 / 108
页数：11
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