钢-PVA混杂纤维水泥基复合材料抗压力学性能及经济性研究

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (11): 3827-3835.

所属专题：水泥混凝土

钢-PVA混杂纤维水泥基复合材料抗压力学性能及经济性研究

张品乐, 曾靖渊, 胡静, 朱昊天, 陶忠

昆明理工大学建筑工程学院,昆明 650500

收稿日期:2023-06-19 修订日期:2023-08-23 出版日期:2023-11-15 发布日期:2023-11-22
通信作者: 曾靖渊,硕士研究生。E-mail:1204879826@qq.com
作者简介:张品乐(1975—),男,博士,教授。主要从事混杂纤维混凝土材料力学性能方面的研究。E-mail:zhangpinlezhang@163.com
基金资助:
国家自然科学基金(52168069,51568028)

Compressive Mechanical Properties and Economic Performance of Steel-PVA Hybrid Fiber Cement-Based Composites

ZHANG Pinle, ZENG Jingyuan, HU Jing, ZHU Haotian, TAO Zhong

School of Architectural Engineering, Kunming University of Science and Technology, Kunming 650500, China

Received:2023-06-19 Revised:2023-08-23 Online:2023-11-15 Published:2023-11-22

摘要/Abstract

摘要： 纤维增强延性水泥基材料(ECC)造价昂贵,在实际工程应用中尚未被推广。在传统ECC体系中加入钢纤维,并按照不同体积分数(0%、25%、50%、75%、100%)将国产PVA纤维替代日产PVA纤维,制备极具性价比的钢-PVA混杂纤维增强延性水泥基材料,通过立方体轴心抗压试验研究混杂纤维延性水泥基材料的单轴受压力学性能。结果表明:随着国产PVA纤维的增加,钢-PVA混杂纤维水泥基复合材料的抗压强度先减小后增加,抗压韧性指数先增强后减弱,而峰值应变提升效果较为显著;相较于普通水泥基材料,钢-PVA混杂纤维水泥基复合材料具有更好的完整性和延性;综合材料抗压性能与材料造价,国产PVA纤维替代日产PVA纤维配制钢-PVA混杂纤维水泥基复合材料可以实现功能价值和经济价值的协同最大化。

关键词: 钢-PVA混杂纤维, 增强延性水泥基材料, 抗压强度, 抗压韧性, 经济价值分析

Abstract: Due to the high cost of fiber reinforced ductile cement-based composites (ECC), it has not been promoted in practical engineering applications. Steel fiber was added to the traditional ECC system, and Nissan PVA fiber was replaced by domestic PVA fiber according to different volume fraction (0%, 25%, 50%, 75%, 100%) to prepare cost-effective steel-PVA hybrid fiber reinforced ductile cement-based composites. The uniaxial compressive mechanical properties of hybrid fiber reinforced ductile cement-based composites were studied by cube axial compressive test. The results show that with the increase of domestic PVA fiber, the compressive strength of steel-PVA hybrid fiber cement-based composites decreases first and then increases, and the compressive toughness index increases first and then decreases, while the peak strain increases significantly. Compared with ordinary cement-based materials, steel-PVA hybrid fiber cement-based composites have better integrity and ductility. Based on the compressive properties and material cost of the composites, the domestic PVA fiber can replace the Nissan PVA fiber to configure the steel-PVA hybrid fiber cement-based composites to maximize the functional value and economic value.

Key words: steel-PVA hybrid fiber, reinforced ductile cement-based composite, compressive strength, compressive toughness, economic value analysis

中图分类号:

TU502⁺.6

张品乐, 曾靖渊, 胡静, 朱昊天, 陶忠. 钢-PVA混杂纤维水泥基复合材料抗压力学性能及经济性研究[J]. 硅酸盐通报, 2023, 42(11): 3827-3835.

ZHANG Pinle, ZENG Jingyuan, HU Jing, ZHU Haotian, TAO Zhong. Compressive Mechanical Properties and Economic Performance of Steel-PVA Hybrid Fiber Cement-Based Composites[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(11): 3827-3835.

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钢-PVA混杂纤维水泥基复合材料抗压力学性能及经济性研究

Compressive Mechanical Properties and Economic Performance of Steel-PVA Hybrid Fiber Cement-Based Composites

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