钢-玄武岩混杂纤维增强混凝土的制备及其单轴受压性能研究
Preparation of steel-basalt hybrid fiber reinforced concrete and its uniaxial compression performance
李广锋 1黄榜彪 1黄秉章 2潘丽华 1林通敏3
作者信息
- 1. 广西科技大学土木建筑工程学院,广西柳州 545006
- 2. 柳州工学院土木建筑工程学院,广西柳州 545616;广西壮族自治区装配式建筑生命全周期管理与虚拟仿真工程技术中心,广西柳州 545000
- 3. 中国葛洲坝集团第一工程有限公司,湖北宜昌 443000
- 折叠
摘要
为探究长龄期下的钢-玄武岩混杂纤维增强混凝土压缩性能,本文改变钢纤维和玄武岩纤维体积掺量制备了 9组试件进行单轴受压试验,结果表明:①钢纤维体积掺量为1％和玄武岩纤维体积掺量为0.6％时的混凝土试件破坏形态相对较好,其抗压强度、峰值应变、轴压韧性比最大;②纤维对混凝土材料的耗能是起积极提升作用的,混掺纤维时,体积掺量为1.5％的钢纤维和体积掺量为0.4％对耗能提升效果最佳;③混掺钢纤维和玄武岩纤维时,玄武岩纤维对混凝土抗压强度影响较大,钢纤维对混凝土峰值应变影响较大,混凝土轴压韧性比受钢纤维的影响程度较大;④根据试验数据对混凝土的抗压强度、峰值应变与纤维体积掺量之间的关系进行了数据拟合.
Abstract
In order to investigate the compressive properties of steel-basalt fiber hybrid reinforced concrete at long age,this paper changes the volume of steel fiber and basalt fiber admixture to prepare 9 groups of specimens for uniaxial compression test,the results show that:①Concrete specimens with 1％volume admixture of steel fibers and 0.6％volume admixture of basalt fibers has relatively good damage patterns with compressive strength,peak strain,and axial compressive toughness ratios;②Fiber on the energy consumption of concrete materials is to play a positive role in enhancing,mixed with fiber,volume mixing of 1.5％of steel fiber and volume mixing of 0.4％of the energy consumption of the best effect of enhancement;③When mixing steel fibers and basalt fibers,basalt fibers have a greater effect on the compressive strength of concrete,steel fibers have a greater effect on the peak strain of concrete,and the axial compressive toughness ratio of concrete is affected to a greater extent by steel fibers;④The relationship between the compressive strength,peak strain and fiber volume admixture of concrete is fitted based on the test data.
关键词
钢-玄武岩混杂纤维/应力-应变曲线/抗压强度/峰值应变/轴压韧性比/耗能Key words
steel-basalt hybrid fiber/stress-strain curve/compressive strength/peak strain/axial compression toughness ratio/consume energy引用本文复制引用
基金项目
广西重点研发计划项目(桂科AB23026065)
广西重点研发计划项目(桂科AB22080083)
柳州市科技攻关与新产品试制(2022CCC0101)
出版年
2024
NETL
NSTL
万方数据