东南大学学报（自然科学版）2016，Vol.46Issue(2)：400-405,6.DOI:10.3969/j.issn.1001-0505.2016.02.027
土膨润土系竖向隔离墙材料施工和易性试验研究
Experimental study on workability of soil-bentonite backfills for vertical slurry cutoff walls
摘要
Abstract
In order to investigate the main construction parameters that meet the workability of soil-bentonite backfills for vertical slurry cutoff walls under various types of site conditions, the marsh fun-nel test, API(American Petroleum Institute) filtrate loss test and density measurement for sodium ben-tonite-water slurries and calcium bentonite-water slurries were carried out.The slump tests of three soil-bentonite backfills, including sandy soil-bentonite, clayey soil-bentonite sandy and soil-clayey soil-bentonite backfills, were measured.The experimental results show that the suitable contents of bentonite for calcium bentonite-water slurries and sodium bentonite-water slurries are 10% and 3%, respectively.The slumps of three soil-bentonite backfills and the water content exhibit a good linear positive correlation.And there exists a uniform correlation between the results based on the standard slump cone and those based on the miniature slump cones.When the standard slump cone is replaced by the miniature slump cone, the water content meeting the requirements of the slump is approximately 1.0 to 1.6 times higher than the liquid limit, and the corresponding slump is 22 to 48 mm.关键词
膨润土/隔离墙/施工和易性/坍落度Key words
bentonite/cutoff wall/workability/slump分类
土木建筑引用本文复制引用
梅丹兵,杜延军,刘松玉,范日东,杨玉玲..土膨润土系竖向隔离墙材料施工和易性试验研究[J].东南大学学报（自然科学版）,2016,46(2):400-405,6.基金项目
国家自然科学基金重点资助项目（41330641）、国家自然科学基金资助项目（41472258，51278100）、江苏省自然科学基金杰出青年基金资助项目（ BK2012022）． （）
