[1]梅丹兵,杜延军,刘松玉,等.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.[doi:10.3969/j.issn.1001-0505.2016.02.027]
 Mei Danbing,Du Yanjun,Liu Songyu,et al.Experimental study on workability of soil-bentonite backfills for vertical slurry cutoff walls[J].Journal of Southeast University (Natural Science Edition),2016,46(2):400-405.[doi:10.3969/j.issn.1001-0505.2016.02.027]
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土-膨润土系竖向隔离墙材料施工和易性试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
46
期数:
2016年第2期
页码:
400-405
栏目:
土木工程
出版日期:
2016-03-20

文章信息/Info

Title:
Experimental study on workability of soil-bentonite backfills for vertical slurry cutoff walls
作者:
梅丹兵杜延军刘松玉范日东杨玉玲
东南大学岩土工程研究所, 南京210096
Author(s):
Mei Danbing Du Yanjun Liu Songyu Fan Ridong Yang Yuling
Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China
关键词:
膨润土 隔离墙 施工和易性 坍落度
Keywords:
bentonite cutoff wall workability slump
分类号:
TU443
DOI:
10.3969/j.issn.1001-0505.2016.02.027
摘要:
为研究满足各类场地条件下土-膨润土系竖向隔离墙材料施工和易性要求的主要施工参数,对钙基膨润土浆液和钠基膨润土浆液进行马氏漏斗黏度试验、API滤失试验和密度测定,并针对砂-膨润土、黏性土-膨润土、砂-黏性土-膨润土3类土-膨润土系竖向隔离墙材料进行坍落度试验.试验结果表明,钙基膨润土浆液和钠基膨润土浆液的合理膨润土掺量分别为10%和3%.3类土-膨润土系竖向隔离墙材料的坍落度与含水率均呈良好的线性正相关性.采用标准坍落筒和迷你锥坍落筒所测定的坍落度结果之间存在统一的经验关系.采用迷你锥坍落筒代替标准坍落筒进行土-膨润土系竖向隔离墙材料施工和易性试验时,满足坍落度要求的含水率范围为其液限的1.0~1.6倍,所对应坍落度范围为22~48 mm.
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 funnel test, API(American Petroleum Institute)filtrate loss test and density measurement for sodium bentonite-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.

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备注/Memo

备注/Memo:
收稿日期: 2015-07-21.
作者简介: 梅丹兵(1991—),男,硕士生;杜延军(联系人),男,博士,教授,博士生导师,duyanjun@seu.edu.cn.
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).
引用本文: 梅丹兵,杜延军,刘松玉,等.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. DOI:10.3969/j.issn.1001-0505.2016.02.027.
更新日期/Last Update: 2016-03-20