小剂量石灰稳定土的水稳性试验研究-《郑州大学学报(工学版)》

文章信息/Info

Title:: Experimental $tudy on Water $tability of Lime-stabilized Soils with Small Lime Content

作者:: 刘忠玉; 薛勇刚; 王喜军.; 郑州大学土木工程学院,河南郑州,450001, 郑州大学土木工程学院,河南郑州,450001, 郑州大学土木工程学院,河南郑州,450001

Author(s):: LIU Zhongyu; XUE Yonggang; WANG Xijun; School of Civil Engineering,Zhengzhou University,Zhengzhou 450001, China

Keywords:: lime-stabilized soil; water stability; soak period; wetting and drying cycle

摘要:: 为了研究小剂量石灰稳定土的水稳性特征,制备了石灰剂量质量分数为4％～8％、压实度为90％的石灰稳定土试样,经90 d的标准养护后,进行了不同饱水时间、不同干湿循环次数下的无侧限抗压强度、劈裂强度和回弹模量试验.试验结果表明:对于石灰剂量为4％～8％的石灰稳定土,在饱水试验和干湿循环试验中,其抗压强度、劈裂强度和回弹模量在初期急剧减小,最终趋于稳定值,且随着石灰剂量的增加,水稳性得到改善.

Abstract:: In order to investigate the water stability of lime-gtabilized soils with small lime content, the sam.ples with 4% -8%6 lime content and 9096 degree of compaction are prepared, the unconfined compresiontest, the splitting test and the compressive resilience modulus test in different soak periods and different wet-ting and drying cycles have been carried out after these samples have been cured in gtandard curing room for90 days. These test results show that, after different soak periods and different wetting and drying cycles, theunconfined compressive strength, spliting strength and compressive resilience modulus of lime-stabilized soilwith 4% .8% lime content decrease sharply at the initial stage, and quickly tend to be constant, In addition,the water stability of lime-stabilized soil will be improved with the increase of lime content.