纤维高强粉煤灰混凝土劈拉强度试验研究  

Experimental research of flexural strength on fiber-reinforced high-strength fly ash concrete

作　　者：杨启斌[1] 庄金平[2] 

机构地区：[1]福建工程学院管理学院,福建福州350118 [2]福建工程学院土木工程学院,福建福州350118

出　　处：《福建工程学院学报》2013年第4期320-323,共4页Journal of Fujian University of Technology

基　　金：福建省住房和城乡建设厅(2011-K-22);福建省教育厅项目(JA10217)

摘　　要：针对掺加纤维可改善高强混凝土的受拉性能特点,进行纤维粉煤灰高强混凝土的立方体劈拉试验研究。试验参数主要有纤维类型、纤维形状、纤维含量。试验结果表明:随纤维掺量的增大,纤维高强混凝土劈拉强度总体上呈增大趋势;扁头型和弓型钢纤维对混凝土劈拉强度的增强作用最明显,而合成纤维对混凝土劈拉强度的增加作用很小;掺入钢纤维对高强混凝土劈拉强度与抗压强度的比值明显提高。A cubic specimens splitting tensile study of fiber-reinforced high-strength fly ash concrete was conducted to investigate the effect of fiber addition on the flexural strength of high strength con- crete. The test parameters included fiber type, fiber shape and fiber content. With the increase of fiber content, the tensile strength of the high strength concrete can be improved gradually. Platycephaly and arch steel fibers can significantly improve the tensile strength, whereas synthetic fi- ber has little influence on the tensile strength. The ratio of concrete splitting tensile strength to com- pressive strength was considerably improved by adding steel fiber.

关 键 词：钢纤维 合成纤维 粉煤灰 高强混凝土 劈拉强度 

分 类 号：TU528.2[建筑科学—建筑技术科学]