【摘要】 滨海盐渍土因土的含水率降低引起氯化钠结晶,土发生盐胀;因土的含水率增加引起盐颗粒溶解,形成孔隙,土发生溶陷;因土中含有较多的Cl-和SO42-,对钢材和混凝土具有腐蚀性;因环境湿度大及土中的Na+水化作用强烈,导致土吸湿软化。因此,在工程应用时,需采取底部铺砂砾石或土工膜等隔离或封闭措施,以控制滨海盐渍土的盐胀、溶陷和吸湿软化问题;或掺入水泥、石灰、粉煤灰和SH固土剂进行改性固化处理,以提高固化土的强度和水稳性。更多还原

【Abstract】 The crystallization of salt causes the expansion of inshore saline soil because of the water content decreasing,and the resolution of the salt particles results in the depression of the soil because of the water content increasing.There are lots of Cl^-and SO₄^2- existed in the soil,which results in the corrosion of steel and concrete.Owing to the saline soil with lots of Na⁺ and the high environmental humidity the soil will be soft after the water absorption.In view of the above engineering geological problems,the inshore saline soil should be protected with gravels or geomembrane in engineering construction to control the expansion,depression and softness of the soil,or be solidified with the cement,lime,flyash and SH agent to improve the strength and the water stability of the solidified soil.更多还原