高液限土最佳掺水泥比的确定

程涛; 洪宝宁; 刘顺青; 徐奋强

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工程科学与技术:2012,44(2):64-69

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高液限土最佳掺水泥比的确定

程涛^1,2, 洪宝宁^1,2, 刘顺青^1,2, 徐奋强^1,2,3

(1.河海大学岩土力学与堤坝工程教育部重点实验室;2.河海大学岩土工程研究所;3.南京工程学院)

Determine the Best Ratio of Mixed Cement of High Liquid Limit Soil

Chen Tao^1,2, Hong Baoning^1,2, Liu Shunqing^1,2, Xu Fenqiang^1,2,3

(1.Key Lab. of Ministry of Education for Geotechnical and Embankment Eng.,Hohai Univ.;2.Geotechnical Research Inst.,Hohai Univ.;3.Nanjing Inst. of Technol.)

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投稿时间：2011-08-19 修订日期：2011-10-14

中文摘要: 分别进行了9组代表性广东省云罗高速沿线高液限土掺水泥0%、1.0%、1.5%、2.0%、2.5%、3.0%后的承载比试验。按照细颗粒含量、液限、素土CBR值分别对高液限土进行分类，根据掺水泥改良后的CBR值为20时，分别确定不同分类高液限土的最佳掺灰比例范围，再综合考虑这3种不同要素确定最佳掺灰比例范围。得出有益的结论：细颗粒含量对CBR值的影响大于液限；高液限土的最佳掺灰比在2.0%左右；对液限较低、细颗粒含量较小的高液限土可直接填筑；对液限高、细颗粒含量大的高液限土应作弃方处理。

中文关键词: 高液限土水泥改良承载比

Abstract:Nine representative groups of CBRtest of the high liquid limit soil improved by cement of 0%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0% along the Yunluo expressway of Guangdong province were conducted. The cement content at CBRvalue of 20 was determined, respectively, as the optimal cement content of high liquid limit soil classified by the different fine particles content, liquid limit, prime soil CBRvalues. The best cement content range was determined by considering integrally the three different elements, and useful conclusions were gained. The result showed that the effect of fine particles content on CBRvalue is greater than that of liquid limit. The optimal cement content of high liquid limit soil fluctuates in value of 2.0%. High liquid limit soil of lower liquid limit and smaller fine particles can be directly filled; high liquid limit soil of higher liquid limit and bigger fine particle content should be abandoned.

keywords: high liquid limit soil improved by cement CBR

文章编号：201100740 中图分类号： 文献标志码：

基金项目:国家自然科学基金资助项目(51079052)；广东省交通厅基金资助项目(200903005)

作者	单位
程涛	河海大学岩土力学与堤坝工程教育部重点实验室；河海大学岩土工程研究所
洪宝宁	河海大学岩土力学与堤坝工程教育部重点实验室；河海大学岩土工程研究所
刘顺青	河海大学岩土力学与堤坝工程教育部重点实验室；河海大学岩土工程研究所
徐奋强	河海大学岩土力学与堤坝工程教育部重点实验室；河海大学岩土工程研究所；南京工程学院

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引用文本：
程涛,洪宝宁,刘顺青,徐奋强.高液限土最佳掺水泥比的确定[J].工程科学与技术,2012,44(2):64-69.
Chen Tao,Hong Baoning,Liu Shunqing,Xu Fenqiang.Determine the Best Ratio of Mixed Cement of High Liquid Limit Soil[J].Advanced Engineering Sciences,2012,44(2):64-69.

Author Name	Affiliation
Chen Tao	Key Lab. of Ministry of Education for Geotechnical and Embankment Eng.,Hohai Univ. Geotechnical Research Inst.,Hohai Univ.
Hong Baoning	Key Lab. of Ministry of Education for Geotechnical and Embankment Eng.,Hohai Univ. Geotechnical Research Inst.,Hohai Univ.
Liu Shunqing	Key Lab. of Ministry of Education for Geotechnical and Embankment Eng.,Hohai Univ. Geotechnical Research Inst.,Hohai Univ.
Xu Fenqiang	Key Lab. of Ministry of Education for Geotechnical and Embankment Eng.,Hohai Univ. Geotechnical Research Inst.,Hohai Univ.；Nanjing Inst. of Technol.