- 王金辉1,葛 晨2,谈永泉3,俞君宝2
2020年第11期
摘要
引用本文
摘 要:通过聚丙烯腈(PAN)纤维混凝土和聚乙烯醇(PVA)纤维混凝土的三点弯曲切口梁试验,研究了合成纤维掺量和弹性模量对混凝土弯曲韧性的影响,探究了纤维混凝土跨中挠度(δ)和裂缝张开口位移(CMOD)与纤维掺量的关系。结果表明:针对混凝土弯曲韧性而言,PAN纤维与PVA纤维的合适掺量范围分别为1.5~1.8 kg/m3和1.3~1.5 kg/m3;δ与CMOD之间存在线性关系,可以用纤维掺量与CMOD预测δ。
Abstract: The influence of the content and elastic modulus of synthetic fiber on the flexural toughness of polyacrylonitrile (PAN) fiber concrete and polyvinyl alcohol (PVA) fiber concrete was studied by the three-point bending notch beam test. The relationship between midspan deflection (δ) and crack tensioning displacement (CMOD) and fiber content of fiber concrete was investigated. The results show that the optimal content range of PAN fiber and PVA fiber are 1.5~1.8 kg/m3 and 1.3~1.5 kg/m3, respectively. There is a linear relationship between δ and CMOD, the fiber content and CMOD can be used to predict δ.
王金辉,葛晨,谈永泉,等.合成纤维混凝土弯曲韧性研究[J].混凝土与水泥制品,2020(11):61-65.
WANG J H,GE C,TAN Y Q,et al.Study on Flexural Toughness of Synthetic Fiber Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11):61-65.