Method for testing volume change rate of steel slag concrete

The invention provides a method for testing the volume change rate of steel slag concrete, which comprises the following steps of: 1, preparing a test block by using a steel mold, and curing in a standard curing room for 28 days; 2, measuring the length of the test block by using an expansion ratio length meter, and calculating the initial volume Vx of the test block; step 3, putting the test block at the curing age into a drying oven for drying; 4, carrying out autoclaving test on the test block according to specifications; 5, measuring the length of the test block after the autoclaving test by using an expansion ratio length meter, and calculating the volume Vy of the test block after the test; 6, calculating the expansion rate epsilon of the test piece according to specifications; and step 7, calculating the volume change rate # imgabs0 # of the test block by using the volume of the test block and the expansion rate of the test piece before and after the test. The volume change rate of the steel slag concr