摘要
对基体强度为C50,钢纤维、聚丙烯纤维体积率分别为1%～3%、0.11%的混杂纤维混凝土(HFRC)进行了抗压试验,结果表明:HFRC的应力-应变曲线上升段、抗压强度、弹性模量和泊松比均与钢纤维混凝土(SFRC)相近,但应力-应变曲线下降段的平缓程度和韧度指数则较大程度大于SFRC,体现出优异的韧性.
Compression experiments for the hybrid fiber reinforced concrete （HFRC） are conducted. The matrix is C50 concrete, and the volume fraction of steel fiber and polypropylene fiber range from 0 to 3% and 0.11% , respectively. The experimental results show that more similarity between the HFRC and the steel fiber reinforced concrete （ SFRC）, which are the ascending portion of stress strain relation curve, compressive strength, elastic modulus and Poisson＇ s ratio. However, the descending portion of stress strain relation curve of HFRC is much flatter than that of SFRC, and the toughness index of HFRC is bigger than that of SFRC, which clearly show the excellent toughness of HFRC.
出处
《广州大学学报（自然科学版）》
CAS
2007年第4期70-73,共4页
Journal of Guangzhou University:Natural Science Edition
基金
广东省自然科学基金项目(06301038)
建设部科研开发项目(06-k1-37)
广州市属高校科技计划项目(62064)
关键词
混杂纤维混凝土(HFRC)
应力-应变曲线
抗压强度
弹性模量
泊松比
韧性
hybrid fiber reinforced concrete （HFRC）
stress strain relation curve
compressive strength
elastic modulus
Poisson＇ s ratio
toughness
