兰州大学机构库 >土木工程与力学学院
用作填埋场替代盖层的水泥黄土工程特性
Alternative TitleProperties of loess-cement as alternative cover of landfills
刘平; 张虎元; 冯蕾; 吴军荣; 龙玉凤; Liu, P. (liuping03@lzu.cn)
2009-09-20
Source Publication四川大学学报(工程科学版)
ISSN1009-3087
Volume41Issue:5Pages:59-64
Abstract压实水泥黄土作为城市生活垃圾卫生填埋场新型替代盖层材料具有经济、易于施工等特点。掺加一定量水泥可以有效降低黄土的压缩性、收缩性以及渗透性,极大地提高黄土的力学强度。试验研究表明,随着水泥掺量的增加,水泥黄土的液限降低,塑限升高,最大干密度降低,并且最优含水率总保持比塑限大近2个百分点。黄土中掺加5%~10%水泥对改善黄土压缩性和收缩性效果显著。依据等效替代原则,通过适当增大厚度的措施,水泥黄土的渗透性完全可以控制在规范要求以内,以符合填埋场最终盖层设计要求,达到最终盖层替代的目的。
Other AbstractThe applicability of using compacted loess-cement as alternative cover at landfill sites was proposed. Laboratory tests were conducted on compacted loess soil improved by the addition of cement for compressibility, contractility and permeability. Tests results showed that the plastic limit of loess-cement increased with the increasing of the content of cement, but there was contrary regular in the liquid limit and the maximum dry density. Experiment data also indicated that adding 5%~10% cement into the loess has more remarkable effect on the compressibility and contractility of the mixture. The hydraulic conductivity values of loess-cement could meet the user's requirements by increasing the thickness of loess-cement layer based on the equivalent principle for the volume of flow. So compacted loess soil by addition of 5%~10% cement is feasible for alternative cover at MSW landfill sites and the new scheme of cover has very high value of application and wide prospects.
Keyword水泥黄土 垃圾填埋 强度 渗透性 收缩性 Contractility Equivalent principle Experiment data Laboratory test Landfill site Liquid limits Loess soils Loess-cement Maximum dry density MSW landfills Permeability Plastic limit Strength
Subject AreaPhysical Properties Of Gases, Liquids And Solids ; Fluid Flow, General ; Soils And Soil Mechanics ; Materials Science ; Industrial Wastes Treatment And Disposal ; Concrete ; Roads And Streets ; Municipal And Industrial Wastes ; Waste Treatment And Disposal
PublisherSichuan Univ
Publication PlaceCHENGDU
Indexed ByEI ; CSCD
Language中文
First Inst
Funding Project国家自然科学基金项目
Host of Journal四川大学
Project Number国家自然科学基金资助项目(50678075)
CSCD IDCSCD:3727539
Funding OrganizationNSFC
SubtypeArticle
EI ID20094512432554
IRIDCNKI:0038879
Department兰州大学西部灾害与环境力学教育部重点实验室;
兰州大学资源环境学院;
中国市政工程西北设计研究院
Citation statistics
Document Type期刊论文
Identifierhttp://ir.lzu.edu.cn/handle/262010/143821
Collection土木工程与力学学院
Corresponding AuthorLiu, P. (liuping03@lzu.cn)
Recommended Citation
GB/T 7714
刘平,张虎元,冯蕾,等. 用作填埋场替代盖层的水泥黄土工程特性[J]. 四川大学学报(工程科学版),2009,41(5):59-64.
APA 刘平,张虎元,冯蕾,吴军荣,龙玉凤,&Liu, P. .(2009).用作填埋场替代盖层的水泥黄土工程特性.四川大学学报(工程科学版),41(5),59-64.
MLA 刘平,et al."用作填埋场替代盖层的水泥黄土工程特性".四川大学学报(工程科学版) 41.5(2009):59-64.
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