摘要
为了研究高温后玄武岩纤维增强混凝土(BFRC)的力学性能,对其受压性能、弹性模量、劈裂受拉性能进行了试验研究。结果表明:随着温度升高,BFRC的抗压强度降低。在相同温度下,随着玄武岩纤维含量的增加,BFRC的抗压强度先增大然后减小。400℃后,BFRC的弹性模量随温度的升高而减小,其下降速度远快于抗压强度的下降速度。温度对BFRC的抗拉强度有很大的影响。随着玄武岩纤维含量的增加,在一定温度下混凝土的劈裂抗拉强度在增加。
In order to study the mechanical properties of basalt fiber reinforced concrete(BFRC)after high temperature,the compressive properties,elastic modulus and splitting tensile properties of BFRC were studied experimentally.The results show that the compressive strength of BFRC decreases with the increase of temperature.At the same temperature,the compressive strength of BFRC increases first and then decreases with the increase of basalt fiber content.After 400℃,the elastic modulus of BFRC decreases with the increase of temperature,and the decrease rate is much faster than that of the compressive strength.Temperature has a great influence on the tensile strength of BFRC.With the increase of basalt fiber content,the splitting tensile strength of concrete increase at a certain temperature.
作者
顾连胜
刘大为
梁炯丰
胡明华
GU Liansheng;LIU Dawei;LIANG Jiongfeng;HU Minghua(School of Civil and Architectural Engineering,East China University of Technology,Nanchang 330013,China;School of Civil Engineering,Chongqing University,Chongqing 400045,China)
出处
《混凝土》
CAS
北大核心
2023年第3期74-76,共3页
Concrete
基金
国家自然科学基金(52068001)
江西省主要学科学术与技术带头人项目(20204BCJL2037)
江西省青年科学基金重点项目(20202ACBL214017)
东华理工大学研究生创新基金(DHYC-202039)。
关键词
玄武岩纤维
混凝土
高温
强度
basalt fiber
concrete
high temperature
strength
