重庆大学学报2017，Vol.40Issue(9)：19-29,11.DOI:10.11835/j.issn.1000-582X.2017.09.003
工业废渣用于地下工程止水帷幕的试验
Experimental application of the industrial waste to the waterproof curtain in underground engineering
摘要
Abstract
As one of the waterproof curtains,trench cutting re-mixing deep wall (TRD) possesses unique advantages of fitting most layers and getting good qualities,however,the high cost hinders its popularization.Thus,if cement can be partly substituted by cheaper fly ash,slag and other industrial waste,the application scope of TRD will be greatly enlarged.In order to verify the performance of the cement replaced by industrial waste,the authors conduct a lot of strength and permeability tests.And results show that fly ash and slag can substitute partially for cement and there is an optimal mixture ratio for the composite cement soil.The best mixing ratio and water-solid ratio is 30％ and 0.6 respectively for clay,and 40％ and 0.6 for sand.Generally,the physical and mechanical properties will be superb when fly ash mixing with sand,while slag is more suitable for clay.The long-term strength of clay is close when adding fly ash or slag,while the average strength of sand after adding fly ash is more stable and 2.4 times larger than that of sand adding slag.In addition,the average permeability coefficient of clay and sand after adding fly ash is about 35％ than that of clay and sand adding slag.关键词
粉煤灰/矿渣/无侧限抗压强度/渗透系数/等厚度水泥土搅拌连续墙Key words
fly ash/slag/unconfined compressive strength/permeability coefficient/TRD分类
建筑与水利引用本文复制引用
张明飞,童立元,郑灿政,程亮..工业废渣用于地下工程止水帷幕的试验[J].重庆大学学报,2017,40(9):19-29,11.基金项目
国家自然科学基金资助项目(4157020433) （4157020433）
国家科技支撑计划资助项目(2012BAJ01B02).Supported by National Natural Science Foundation of China (4157020433),and National Key Technology Research and Development Program of the Ministry of Science and Technology of China(2012BAJ01B02). （2012BAJ01B02）
