木质素磺酸钙改良黄土液塑限试验研究  

Study on Liquid-plastic Limit of Loess Improved by Calci-um Lignosulfonate

作　　者：王学文 刘辰麟 王沈力 李晓龙 WANG Xue-wen;LIU Chen-lin;WANG Shen-li;LI Xiao-long(Gansu CSCEC Municipal Engineering Investigation and Design Institute Co.,Ltd.Lanzhou Gansu 730000,China)

机构地区：[1]甘肃中建市政工程勘察设计研究院有限公司,甘肃兰州730000

出　　处：《西部探矿工程》2023年第4期4-7,共4页West-China Exploration Engineering

基　　金：甘肃省住房和城乡建设厅科研项目(木质素磺酸钙改良黄土工程特性研究JK2020-16)。

摘　　要：木质素磺酸钙是一种复杂的高分子聚合物,可有效改善土体物理力学特性,选取兰州地区黄土,对木质素磺酸钙不同掺量和养护龄期条件下改良黄土液塑限的变化规律进行试验研究。试验结果表明:随着木质素磺酸钙掺量的增大,改良黄土的液限、塑限均呈现出减小的趋势。塑性指数随木质素磺酸钙掺量增加呈略微降低趋势,且随着掺量增大,改良黄土的塑性指数趋于7~8之间。Calcium lignosulfonate is a complex high-molecular or-ganic matter,which can effectively improve the physical and me-chanical properties of soil.The Lanzhou loess was selected for study on the variation of liquid-plastic limit of improved loess un-der different dosages and curing ages of calcium lignosulfonate.The result shows that the liquid limit and plastic limit of the im-proved loess decreases with the increase of calcium lignosulfonate.The plasticity index decreases slightly with the increase of calcium lignosulfonate.The plasticity index of the improved loess tends to be between 7 and 8 with the increase of calcium lignosulfonate.

关 键 词：木质素磺酸钙 黄土 液塑限 塑性指数 

分 类 号：TE254[石油与天然气工程—油气井工程]