期刊论文

中文

中国科技论文

2095-2783

2018

13

13

1445-1451

10.3969/j.issn.2095-2783.2018.13.001

湖南省重点学科建设项目（2013ZDXK006）； 中南林业科技大学引进***人才科研启动基金资助项目（104-0094）;中南林业科技大学研究生科技创新基金资助项目；

本校为第一机构

基于单一改良剂试验,得到膨胀土改良剂配方取值范围。利用二分法优化正交试验,针对多组改良剂进行不同掺入量组合,并进行液塑限、自由膨胀、标准吸湿含水率的试验。结果表明:多改良剂的组合配方能有效对膨胀土进行改良,并能有效节约改良剂用量。通过数值分析得出了塑性指数削减率、自由膨胀率削减率、标准吸湿含水率削减率这3个指标与生石灰掺量、粉煤灰掺量、煤渣掺量、中粗砂掺量、温度、时间的计算公式。试验结果表明,塑性指数削减率指标的误差小于8%,自由膨胀率削减率指标的误差小于5%,标准吸湿含水率削减率指标的误差小于9%。

Based on the experimental study on expansive soil,the formula range of expansive soil amendment was obtained by single modifier test.On the basis of orthogonal experiments of dichotomy optimization,the liquid limit and plastic limit,free expansion and standard moisture absorption test were studied in combination with a group of amendments.The empirical formulas were developed and the plasticity index change rate,reduction rate of standard absorption moisture change rate and free expansion rate were used as the dependent variables.The content of lime,fly ash,cinder content,sand content,temperat...