The effects of hardened cement on the compressive strength of autoclaved waste concrete samples of fine powder are less because the amount of hardened cement in ordinary concrete is more than 12.5 wt% (mass ratio).

• 由于普通混凝土的水泥用量按水化水泥量计算均超过12.；5%25；普通混凝土磨细制成蒸压试样的强度受废混凝土中水泥石量的影响很小。