STW型生态土壤稳定剂改良工程粘性土胀缩性试验研究

针对STW型生态土壤稳定剂改良粘性土的胀缩性进行了试验研究。实验结果表明:STW型土壤稳定剂可以有效地改良粘性土的胀缩性；土颗粒粒径的大小、稳定剂的掺量对改良粘性土的胀缩性均有不同程度的影响；在平均粒径为0.75mm时，改良土和素土的无荷膨胀率均达到最低值；改良土的胀缩性随着稳定剂掺量的增大而减小。

EXPERIMENTAL STUDY ON SWELLING AND SHRINKING PROPERTY OF CLAY TREATED WITH STW POLYMER SOIL STABILIZER

This paper presents an experimental study on the swelling and shrinking property of clay treated with STW type stabilizers.The experimental results indicate that STW type stabilizer can reduce the swelling and shrinking property of clay effectively.The sizes of soil particle and the content of STW type stabilizer have different effects on the swelling and shrinking property of the treated clay.The expansion of the treated clay with an average particle size of 0.75 mm reaches the lowest value.The swelling and shrinking property of the treated clay decreases as the content of STW type stabilizer increases.Finally,the paper discusses the mechanism of the STW polymer soil stabilizers in modification of the clay swelling and shrinking property.