The waterproof coating prepared with chemical by-products or waste had goodcracking resistance and adhesive strength.Its raw materials cost was only 48.9% that of newmaterials.

• 利用化工副产物和废料配制的防水涂料具有良好的抗裂性和粘结强度；其原材料成本价是新料成本价的48.；9%25。