Prefilled aggregate concrete grouting material combination optimization method based on expectation function

The invention relates to a pre-filled aggregate concrete grouting material combination optimization method based on an expectation function, which belongs to the technical field of civil engineering and mainly comprises the following steps: step 1, determining grouting material key components influencing response indexes according to an early-stage pre-test comparison result; 2, based on a response surface method, different grouting material components Xi (k) are selected as test factors, and each expected performance index Yk of the grouting material is a response value; 3, performing test design by using a Box-Behnken test design method, and determining the levels of different test factors; the method has the advantages that the obtained optimal solution tends to meet the requirements of all responses and does not excessively tend to a certain response requirement, the result can more accurately evaluate the comprehensive performance of the pre-filled aggregate concrete grouting material, and a reference ca