摘要
将5组3种龄期的钢纤维混凝土试块分别进行单轴压缩试验,研究钢纤维掺入率和养护龄期对混凝土抗压性能的影响。结果表明:随着钢纤维掺入率的增加,钢纤维混凝土抗压强度随之增大;钢纤维掺入率不变时,其抗压强度随着养护龄期的增长而有小幅度的增大;钢纤维的掺入可以有效地提高混凝土的抗裂能力及韧性;钢纤维的掺入能增强混凝土的塑性变形能力,使混凝土的最终破坏形态为明显的斜截面剪切破坏。
The uniaxial compression tests were carried out in 5 groups of steel fiber concrete speciments for 3 kinds of age,and the effect of steel fiber incorporation rate and curing age was reaserched on the compressive properties of concrete. The results show that the compressive strength of steel fiber reinforced concrete increases with the increase of the ratio of steel fiber. When the steel fiber incorporation rate is constant,the compressive strength of the steel fiber has a small increase with the growth of the curing age. The addition of steel fiber can effectively improve crack resistance and toughness of concrete. With addition of steel fiber,plastic deformation ability of concrete is enhanced,and the ultimate destruction form of concrete is the shear failure with obvious oblique cross section.
作者
柳艳杰
周世杰
高凯
丁昌健
LIU Yan-Jie;ZHOU Shi-Jie;GAO Kai;DING Chang-Jian(School of Civil Engineering,Heilongjiang University! Harbin 150080,China)
出处
《黑龙江大学工程学报》
2018年第2期13-18,共6页
Journal of Engineering of Heilongjiang University
基金
哈尔滨市科技创新人才项目(2017RAXX031)
黑龙江省高校基本科研业务费黑龙江大学专项资金项目(HDJCCX-201627)
黑龙江省大学生创新训练资助项目(201710212052)
关键词
钢纤维混凝土
抗压性能
养护龄期
破坏形态
steel fiber concrete
compressive properties
curing age
destruction form
