Preparation and application of super high flexural strength steel fiber reinforced concrete
WU Xin
GUI Gensheng
LIU Dengxian
Abstract：Based on the engineering application, by use of special steel fiber,high performance composite admixture of raw materials for the mix design of concrete mix,and the construction properties and the mechanical properties of concrete are used as the evaluation index by means of orthogonal test,the influence factors of sand ratio,water cement ratio,the amount of cementitious material,steel fiber content are optimized. The experimental results and engineering application show that special steel fiber can significantly improve the flexural strength,and the high performance composite admixture can improve the mixture cohesion. The sand ratio is 41%,the water cement ratio is 0.30,the steel fiber volume fraction is 2.5%,the amount of cementitious materials is 630 kg/m3,such mix can prepare ultra high flexural strength of steel fiber reinforced concrete with flexural strength of 20 MPa.
Keywords：super high flexural strengthpumping concretehigh performance composite admixture
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 5-8 )