Under the background of abundant desert sand resources in western China,the influence of desert sand on the bonding performance of steel and concrete was explored,and the central pull-out test was made to study the bond strength of steel and concrete under different desert sand replacement rates and different fly ash contents.According to the bond-slip curve,the effects of desert sand replacement rate and fly ash content on the bond strength,ultimate displacement and failure mode of steel and concrete were analyzed.The results show that the bond strength of steel and concrete increases first and then decreases with the increase of desert sand replacement rate under the condition of brittle splitting failure caused by short anchorage length of 16 mm reinforced concrete specimen.When the fly ash content is 20%,the bond strength of the two increases the most.
维普
万方数据