含水率对南平重塑黏土强度影响分析

Influence of Water Content on Strength of Remolded Clay in Nanping

由于受气候条件影响,南平黏土含水率高,路基施工土体晾晒困难。试验得出土体含水率高于最优含水率时,路用性能依然能满足要求。在此背景下,对不同初始含水率的重塑土样进行三轴固结排水试验,发现土样破坏模式受围压和初始含水率双重因素共同影响;初始含水率对土样有效粘聚力有影响,但对有效内摩擦角无影响。

due to the influence of climate conditions,Nanping clay has a high moisture content,which makes it difficult to air the soil in subgrade construction.The test results show that when the soil moisture content is higher than the optimal moisture content,the road performance can still meet the requirements.Under this background,the triaxial consolidation drainage test of remolded soil samples with different initial water content was conducted.It was found that the failure mode of soil samples was affected by both confining pressure and initial water content;the initial water content had an effect on the effective cohesion of soil samples,but had no effect on the effective internal friction angle.