合成材料老化与应用2023，Vol.52Issue(6)：92-94,119,4.
桥面铺装纤维高性能混凝土的力学及干燥收缩性能研究
Study on Mechanics and Dry Shrinkage Properties of Fiber High Performance Concrete for Bridge Deck Pavement
李萍1
作者信息
- 1. 福州市规划设计研究院集团有限公司,福建福州 350108
- 折叠
摘要
Abstract
By mixing different amounts of steel fiber(SF),polypropylene fiber(PF)and polyvinyl alcohol fiber(PVAF)into the high-performance concrete for bridge deck pavement,based on compressive strength,split tensile strength,folding strength and drying shrinkage test,the influence of fiber type and dosage on the mechanics and dry shrinkage performance of high-performance concrete was systematically investigated.The results show that:With the increase of the fiber mixture,the compressive strength,splitting tensile strength and folding strength of high performance concrete all increase first and then decrease.The compressive and folding resistance of PVAF fiber mixed concrete is better than SF and PF fiber.The cracking resistance of PF fiber high performance concrete is better.The dry shrinkage strain of high performance concrete decreases with the increase of fiber content and then increases.Fiber incorporation can effectively inhibit the dry shrinkage deformation of concrete to a certain extent.According to the results of the mechanical properties and dry shrinkage properties test of high-performance concrete,SF,PF and PVAF can effectively improve the strength and dry shrinkage deformation of concrete.The suggested optimal incorporation of the three fibers is 1.5％,0.8％and 1.0％respectively.关键词
桥面铺装/高性能混凝土/纤维/力学性能/干燥收缩性能Key words
bridge deck pavement/high performance concrete/fiber/mechanical properties/dry shrinkage properties分类
建筑与水利引用本文复制引用
李萍..桥面铺装纤维高性能混凝土的力学及干燥收缩性能研究[J].合成材料老化与应用,2023,52(6):92-94,119,4.
