The mortar part inspects the influence on resistance to chloride ion penetration by different water-binder ratios, different added materials, different sand-binder ratios and different ages;
砂浆部分研究了不同水胶比、不同掺和料、不同龄期、不同砂胶比分别对其抗氯离子渗透性能的影响；
2
The additive of correcting metal penetration for green sand mold casting, made from the waste of oil further fabricated——namely DK material, is researched in this paper.