压实土体崩解特性试验研究

基于传统崩解试验方法精度较低的问题,研制了一套压实土体崩解试验系统。查明了压实土体试验中崩解时间和崩解量的变化规律,利用自主研制的试验装置,开展了崩解试验研究。分析了含水率、密实度、颗粒级配、颗粒种类等因素对压实土体崩解时间和崩解量的影响。试验结果表明:对于砂岩颗粒土料,含水率对崩解量和崩解时间的影响较大;而相对密实度对崩解量和崩解时间影响较小。对于泥岩颗粒土料,含水率对试样的崩解量和崩解时间影响不显著;而相对密实度对崩解量和崩解时间影响较大。对于不同级配的砂岩、泥岩颗粒土料,细颗粒含量越多,抗崩解性也随之增强,崩解时间越短崩解量越大。

Experimental investigation of compacted soil disintegration property

A compacted soil disintegration test device was developed. The variation law of disintegration time and disintegration amount in compacted soil test was revealed. A disintegration test was carried out by means of a self-developed experimental device. The influences of water content, compactness, particle gradation and particle size on disintegration time and disintegration count of compacted soil were investigated respectively. The results show. For sandstone soil, water content has a great influence on disintegration time and disintegration count, while relative compactness has little effect on disintegration. For mudstone granular soil, relative compactness has a great influence on disintegration time and disintegration count, while water content has little effect on disintegration. For different graded sandstone granular soil and mudstone granular soil. The more content of fine particles, the higher of the disintegration resistance, the shorter of the disintegration time and the grater of the disintegration rate.