腐殖酸与盐分浓度对石灰加固土有明黏土的影响以及微观结构研究

首先从力学性质方面考察了有机质之一的腐殖酸和盐分浓度对于石灰加固土的影响。分析的结果显示对于腐殖酸含量较高的黏土由于凝硬反应被阻碍使得加固土的强度与屈服应力较小,并且由于盐分浓度较高时腐殖酸活性降低,因此随着盐分浓度的增加腐殖酸对于石灰加固土的影响减小。然后通过分析加固土的微观结构,我们讨论了石灰加固土的力学性质与微观结构之间的关联性。

Influence of humic acid and salt concentration on lime-stabilized ariake clays and microstructure research

This study first investigates the effects of humic acid, and salt concentration on lime-stabilized Ariake clays with emphasis on their mechanical properties. The results show that the strength and the yield stress of lime-stabilized clay with high humic acid are low due to the obstruction of the pozzolanic reaction, and the effect of humic acid on strength of stabilized clays decreases with increasing salt concentration because the humic acid becomes inactive at higher salt concentration. Then through analyzing the microstructure feature of the stabilized clays, some relationship between microstructure and mechanical properties of lime-stabilized clays are established.