硅酸盐通报2025，Vol.44Issue(1)：69-80,12.DOI:10.16552/j.cnki.issn1001-1625.2024.0731
高温后钢-玄武岩混杂纤维混凝土动态力学性能研究
Dynamic Mechanical Properties of Steel-Basalt Hybrid Fiber Concrete after High Temperature
摘要
Abstract
In order to study the influence of high temperature on the dynamic mechanical properties of steel-basalt hybrid fiber reinforced concrete(HFRC),a φ50 mm split Hopkinson pressure bar(SHPB)system was used to carry out dynamic compression and dynamic splitting experiments on steel fiber reinforced concrete(SFRC),basalt fiber reinforced concrete(BFRC),and hybrid fiber reinforced concrete at different temperatures(25,100,200,400,600,800 ℃).The volume content of steel fiber and basalt fiber was 1％and 0.2％,respectively.The dynamic stress-strain process under different temperature conditions was obtained.The corresponding dynamic compressive strength,dynamic splitting strength and peak strain were obtained.The results show that the residual mechanical properties of specimens can be ensured at high temperature by adding basalt fiber,and the dynamic splitting tensile strength of specimens can be improved obviously by adding steel fiber.Temperature damage softening has an important effect on the mechanical properties of concrete.The addition of steel fiber and basalt fiber can effectively relieve the deterioration of high temperature,and steel-basalt hybrid fiber concrete exhibits better mechanical properties under normal and high temperature conditions.关键词
钢-玄武岩混杂纤维/混凝土/动态抗压强度/动态劈拉强度/分离式霍普金森压杆/高温Key words
steel-basalt hybrid fiber/concrete/dynamic compressive strength/dynamic splitting strength/split Hopkinson pressure bar/high temperature分类
土木建筑引用本文复制引用
冉秋硕,徐泽辉,齐文超,刘磊..高温后钢-玄武岩混杂纤维混凝土动态力学性能研究[J].硅酸盐通报,2025,44(1):69-80,12.基金项目
云南省重大科技专项(202202AG050014) （202202AG050014）
