一种新型土壤强固剂加固红土试验研究

Research on Laterite Reforcement by Soil Reforcing Agent

土壤强固剂是一种新型的加固土体复合材料。文中通过室内击实、直剪以及无侧限抗压强度对比试验 ,分析了一种新型土壤强固剂对云南红土的加固效果。试验结果表明 :这种新型土壤强固剂对红土样的最大干密度基本无影响 ,但可提高红土样的最优含水量 ,特别是抗剪强度和无侧限抗压强度都有显著提高 ,强度加固效果系数都大于 1,变形加固效果系数都小于 1,其加固效果优于粉煤灰。证明这种新型土壤强固剂能够显著改善土体性能 ,减小变形 ,提高土体的承载能力。

Soil reinforcing agent is a new type of composite to reinforce soil boay. The effect of a new type of soil reinforcing agent to Yunnan laterite is analyzed herein through tests of compaction, direct shear and unconfinea compression strength which indicate the maximum dry density of the laterite is basically not influenced by the said agent but the optimum water content in laterite is enhanced. The coefficient of strength improvement is larger than 1 and that of displacement is less than 1. It is proved that the said agent can improve the behaviours of the soil obviously and to decrease the deformation and to raise the bearing capacity of soil.