In this paper, the engineering properties of gypsum, especially, the engineering properties of weathered mud-stone and geo-synthetics before and after soaking by acid water are discussed in detail.

• 本文对鹿寨磷石膏、风化泥岩和土工合成材料经酸性磷石膏渣浆水浸泡后的物理力学性质进行了较为详细的试验研究。