Analysis of Influencing Factors on Strength and Shrinkage Performance of Alkali Slag Mortar Based on Response Surface Analysis
This paper studied the influence of different influencing factors and their interaction on the compressive strength and shrinkage performance of alkali slag mortar.By setting different levels of three factors,such as the content of expansion agent,the content of shrinkage agent and the volume content of basalt fiber,the response surface analysis method was used to design the test and establish the prediction model of compressive strength and drying shrinkage,and the optimization results were verified by experiments.The results show that:the model missing item is not significant,the degree of uncorrelation between the test data and the model is not significant,the model is credible,and the accuracy and reliability of the test are high.The sensitivity of three factors to compressive strength is as follows:expansion agent>basalt fiber>shrinkage agent.The sensitivity of three factors to the drying shrinkage of alkali is as follows:reducing agent>expanding agent>basalt fiber.The relative errors of compressive strength and dry shrinkage of the two models are 2.2%and 2.5%,respectively,which indicates that the predicted results obtained by the response surface analysis method are consistent with the measured results of compressive strength and dry shrinkage of alkali slag mortar.
alkali slag mortarstrengthdrying shrinkageresponse surface analysispredictive model
万方数据
维普
