压实度对膨润土改性黄土干湿裂缝的影响

Effect of Compaction Degree on Wet and Dry Cracks of Bentonite Modified Loess

为研究膨润土改性黄土的干湿损伤特性,设计单因素试验方案,以改性黄土的压实度作为影响因素,探究干湿损伤过程中试样表面出现裂缝的情况,并运用计算机软件计算试样表面出现的裂缝面积,以得到压实度对改性黄土干湿裂缝的影响。结果表明:在同样的时间节点,试样表面出现裂缝的面积随压实度的增大而增大;当压实度大于0.88时,试样的裂缝面积趋于相同,压实度对于试样的干湿损伤特性影响较小。

A single factor test scheme is designed to study the dry-wet damage characteristics of bentonite modified loess.The compacting degree of modified loess is taken as the main influencing factor to explore the cracks appearing on the sample surface during the dry and wet damage process by calculating the surface fracture area of the sample.The results show that the surface crack area increases with the increase of compactness at the same time node.When the degree of compaction is greater than 0.88,the fracture area of the sample tends to be the same,and the degree of compaction has little influence on the dry and wet damage characteristics of the sample.