Research on Mechanics and Durability of Basalt Fiber Bridge Concrete
About the author:
China Railway 19th Bureau Group East China Engineering Co., Ltd., Yuyao, Zhejiang 315400, China
Abstract:
In order to study the influence of basalt fibers on mechanics and durability of bridge concrete,and improve the comprehensive performance of bridge concrete, compressive strength tests, splittingtensile strength tests, frost resistance tests and chloride ion penetration resistance tests were conducted onbridge concrete. The research results show that with the increase of basalt fiber content, the compressivestrength of bridge concrete at 7,28d first increases and then decreases, the splitting tensile strength at28d first increases and then decreases, the mass loss rate roughly decreases and then increases, therelative dynamic elastic modulus roughly increases and then decreases, and the electric flux firstdecreases and then increases. The optimal dosage of basalt fiber is 0. 3%. Adding basalt fiber can helpimprove the compressive strength, splitting tensile strength, relative dynamic elastic modulus, reducemass loss rate and electric flux of bridge concrete. Compared with plain concrete, basalt fiber bridgeconcrete has better mechanical properties and durability.
