摘要
通过膨胀土直剪试验验证了膨胀土在干湿循环下会出现裂缝,随着循环次数增多裂缝随之增加扩展,并且裂缝的出现降低土体的黏聚力和内摩擦角,削弱了土体的抗剪强度导致路基在一定条件下发生失稳;通过无侧限抗压强度试验确定了作为稳定剂的焚烧飞灰和水泥的配比为1∶1;通过测量加入稳定剂后的膨胀土的膨胀率和膨胀力等一系列相关物理指标确定了稳定剂的掺入量为5%。
Relying on a second-class highway, using fly ash mixed with cement, this paper improved the expansive soil used in the engineering. Through the indoor test, it also determined the optimum fly ash cement adding amount of the engineering, which eventually used in the practical engineering.
出处
《山西交通科技》
2016年第5期29-31,共3页
Shanxi Science & Technology of Transportation
关键词
膨胀土
干湿循环
膨胀率
回弹模量
expansive soil
dry-wet circulation
expansion rate
modulus of resilience
