macadam aggregate是什么意思

用法例句

A new type of coarse aggregate interlocking concrete was prepared with a new method called scattering-filling aggregate technology.

采用这种方法制备集料嵌锁混凝土不仅保证了原混凝土的良好工作性,而且抛入碎石后混凝土的强度不但没有降低,反而随着集料对混凝土的置换率从10%~30%(体积分数)的增加而有一定增加。