Experimental Study on Interlayer Performance and Crack Resistance of Mass Concrete in Layered Placement
Harsh environment will reduce the interlayer bonding quality of mass concrete,resulting in plastic cracking,which seriously affects the safety and durability of the structure.Therefore,this paper studies the water content and permeability resistance of concrete under different treatment measures,and evaluates the impact of extreme weather on the interlayer performance and crack resistance of concrete,in order to find ways to reduce the risk of mass concrete construction.The test results show that,in high temperature environment,covering insulation can re-duce the water loss rate of mortar to a certain extent,reduce the permeability resistance,and artificial grooves can slightly increase the interlay-er splitting tensile strength of concrete.For C1,C2 and C3 types of concrete,the interlayer splitting tensile strength is 0.86,0.58,1.14 MPa,respectively,which is 29%,52%and 6%lower than that of bulk concrete(C0).Therefore,it is suggested to further improve the bonding quality of building concrete layers and reduce the construction risk by using the covering insulation strategy.
Building concreteInterlayer bonding qualityCrack resistance
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