基于抗疏力的土壤处理剂对膨胀土的改良试验

A Modified Test of Expansive Soil Based on CONSOLID Soil Treatment Agent

为减小膨胀土遇水膨胀、失水收缩的特性在工程建设中对建筑物的危害,在室内采用基于抗疏力的启培抗疏力处理剂对膨胀土的抗膨胀性进行改良试验,通过自由膨胀率和无荷载线膨胀率两项指标评价改良效果。试验发现依次掺入质量分数2%,4%,8%,12%和20%的处理剂时,膨胀土的自由膨胀率和线膨胀率均呈逐渐降低趋势,但处理剂掺入量超过12%后,对膨胀性的影响则趋于弱化。适量的启培抗疏力处理剂对膨胀土的抗膨胀性有显著的改良效果。

To reduce the hazards to buildings in engineering construction about expansive soil characteris-tics,water swelling and dehydration contraction,in laboratory the modified tests was uesd to the anti -swellable of expansive soil by Qi Pei CONSOLID treatment agent which is based on CONSOLID,and eval-uates improvement effect by two indexes,free expansion coefficient and non - load linear expansion coeffi-cient. It was found that the sequential incorporation of 2% ,4% ,8% ,12% and 20% of the treatment a-gent,free expansion coefficient and linear expansion coefficient of expansive soils show a decreasing trend,when the treatment agent is incorporated amount exceeds 12% ,the impact on the expansion of it tended to weaken. Tests show the right amount of Qi Pei CONSOLID treatment agent can improve the anti- swelling of expansive manifestly.