季冻性类黏土降温速率及盐浓度对工程质量的影响

季冻区道路经常发生冻胀、翻浆、开裂、不均匀沉降等一系列冻害现象,深入研究冻害因素对土体性质的影响,对季冻区工程建设及维护具有重要意义。文章以呼和浩特地区的类黏土为研究对象,通过冻胀率试验和无侧限抗压强度试验,检测土体降温速率及土体中盐浓度对冻土工程质量的影响,结果表明降温速率与盐浓度对类黏土性质的影响明显。

The effect of seasonally frozen clay cooling rate and saltconcentration on engineering quality

Seasonal frozen area roads often occur a series of frost damage phenomenon such as frost heaving,frothing,cracking and uneven settlement,in-depth study of frost damage factors impact on the nature of the soil has great significance on engineering construction and maintenance of seasonal frozen area.The paper takes Hohhot clay for the study,conducts frost heave rate test and unconfined compressive strength test,detects the effect of soil cooling rate and salt concentration on engineering quality,the results show that the cooling rate and the salt concentration have obvious impact on the nature of the clay.