河南城建学院学报2024，Vol.33Issue(2)：13-19,7.DOI:10.14140/j.cnki.hncjxb.2024.02.003
玄武岩纤维增强混凝土动态压缩力学性能研究
Dynamic compression mechanical properties of basalt fiber reinforced concrete
摘要
Abstract
A split Hopkinson pressure bar test device with a diameter of 50 mm was used to conduct dynamic compression tests on basalt fiber reinforced concrete(BFRC)with different basalt fiber contents of 0%,0.05%,0.1%,0.15%,and 0.2%under different gas pressures.The mechanical properties of BFRC under different strain rates were studied,the relationship between dynamic compressive strength and quasi-static com-pressive strength as well as impact toughness were analyzed to establish a dynamic constitutive model for BFRC.The results show that BFRC exhibits significant strain rate effect.The dynamic compressive strength and specific energy absorption increase first and then decrease with the increase of basalt fiber content,reaching the maximum value at a content of 0.1%.The growth factor of dynamic strength approximately increases linearly with the logarithm of strain rate.The dynamic constitutive model of BFRC fits well with the experimental and stress-strain curve results.关键词
混凝土/玄武岩纤维/抗压强度/冲击韧性/动态本构模型Key words
concrete/basalt fiber/compressive strength/impact toughness/dynamic constitutive model分类
建筑与水利引用本文复制引用
孙健,庞建勇,郑瑞琪,苏永强,徐国平..玄武岩纤维增强混凝土动态压缩力学性能研究[J].河南城建学院学报,2024,33(2):13-19,7.基金项目
矿山建设工程安徽省高校重点实验室开放基金(GXZDSYS2022106) （GXZDSYS2022106）
安徽省高等学校自然科学研究重点项目(KJ2020A0297) （KJ2020A0297）
安徽理工大学研究生创新基金项目(2022CX2038) （2022CX2038）
