Prepare a concrete mix in the proportions of one part Portland cement to six parts combined aggregates, measured by dry loose volume.
Calculate the difference in length of the specimens, when removed from moist storage at an age of 7 days and at the final measurement at the age of 100 days,
备注:以1:6的比例混合硅酸盐水泥和集料混合物来制备混凝土混合料,两者按散装干集料体积计。
在湿养护箱中对试样进行7天养护期后将其移出,试样达到100天龄期时测量其最终长度,分别在这两个龄期时计算试样的长度差