Influence of Mix Proportion Parameters on Shrinkage Property of C50 Box Girder Concrete
LIU Jiabin
QIN Honggen
GUO Fei
MA Biao
PANG Chaoming
Abstract：Shrinkages of C50 concrete at different ages were measured with different experimental devices including condensation,early self-shrinkage(1 d),long term self-shrinkage and drying shrinkage.The effects of water-binder ratio,sand percentage,water content and water reducing agent content on the shrinkage property of C50 box girder concrete were studied systematically,and measures for the preparation of concrete with low shrinkage was proposed.The results show that with increasing water-cement ratio,the self-shrinkage of concrete is reduced,but the condensation and drying shrinkage increase.By reduction of sand percentage and water content,all kinds of shrinkage of concrete,including drying shrinkage,self-shrinkage and condensation can be reduced.The concrete shrinkage can be decreased by optimizing aggregate gradation and controlling flow ability.
Keywords：box girder concretemix proportion parametercondensationself-shrinkingdrying shrinkage
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 71-77 )