Construction of Accurate Prediction Model of Aging Life of Modified Rubber Pervious Concrete
In order to improve the prediction effect of aging life of modified rubber pervious concrete,a precise prediction model of aging life of modified rubber pervious concrete was established.Rubber concrete specimens with different contents of modifiable agents were prepared,Aging temperature cycle experiments were carried out.Weibull distribution was introduced to construct density functions and distribution functions of concrete,and modified Coffin-Manson aging life model of modified rubber pervious concrete was constructed.The life prediction of modified rubber pervious concrete was realized.Experimental results show that the mass loss of concrete without modifier is the largest,while the modified rubber pervious concrete can maintain a higher effective porosity and relative dynamic modulus.It can be predicted by this model that the aging life of concrete without modifier is shorter,while the specimen with 4%modifier content fails after 2267.2 freeze-thaw cycles,that is,the aging life of this specimen is 2267.2,and its aging life is the highest.Moreover,the prediction reliability of this prediction model is higher than 0.8,which can accurately predict the aging life.
modified rubberpervious concreteaging lifeaccurate predictionweibull distributionmodel building
NETL
NSTL
万方数据
维普
