高含水率淤泥生石灰材料化土击实方法初探

›› 2010, Vol. 31 ›› Issue (S1): 127-137.

高含水率淤泥生石灰材料化土击实方法初探

桂跃^{1, 2}，杜国庆^{1, 2}，张勤羽^{1, 2}，宋文智^{1, 2}，蔡超^{1, 2}

1.河海大学岩土力学与堤坝工程教育部重点实验室，南京 210098；2.河海大学岩土工程科学研究所，南京 210098

收稿日期:2010-04-23 出版日期:2010-08-10 发布日期:2010-09-09
作者简介:桂跃，男，1982年生，博士研究生，主要从事软土地基处理研究。
基金资助:
国家自然科学基金（No. 50879023）；国家高技术研究发展计划（863计划）（No. 2007AA11Z135）；水利部公益性行业专项资助项目（No. 200701045）。

Study of compaction method of lime-stabilized high water content sludge

GUI Yue ^{1, 2}, DU Guo-qing ^{1, 2}, ZHANG Qin-yu ^{1, 2}, SONG Wen-zhi ^{1, 2}, CAI Chao ^{1, 2}

1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China; 2. Geotechnical Research Institute, Hohai University, Nanjing 210098, China

Received:2010-04-23 Online:2010-08-10 Published:2010-09-09

摘要/Abstract

摘要：

为了击实高含水率淤泥生石灰材料化土，通过改进标准击实仪，设计了4种不同击实冲量的击实情形，对不同掺灰比的材料化土在不同闷料期进行击实试验，分析了击实冲量及击实功与淤泥生石灰材料化土干密度的关系，提出了材料化土的击实方法及击实评价方法。建议根据材料化土的含水比选择击实冲量适宜的击实方法，通过土的干密度随击次变化规律判断材料化土是否击实。特别从工程角度出发，测试了击实材料化土不同龄期的无侧限抗压强度，初步探讨了高含水率疏浚淤泥生石灰材料化土作为工程填料的可行性。

关键词: 淤泥, 材料化土, 击实方法, 干密度, 无侧限抗压强度

Abstract:

In order to compact the lime-stabilized high water content sludge, 4 different compaction types, having different compactive impulses, were designed by improving the corresponding compaction testing standards and testing instrument. The compaction test was conducted on the lime-stabilized high water content sludge with different lime contents and compaction delay times. By analyzing the relationship between the compactive impulse, the compactive effort and the dry unit weight of soil, a new compaction method fitting to the lime-stabilized high water content sludge was presented; and it was illustrated that choice the compaction method with proper compactive impulse according to the water content ratio ( ) of lime-stabilized sludge and judge whether densification by the change law of the dry unit weight and compaction blows. Based on the engineering practice, the unconfined compressive strength of lime-stabilized sludge at different curing periods was tested; the feasibility of the lime-stabilized high water content sludge used as the fill material of engineering was discussed preliminarily.

Key words: sludge, fill material, compaction method, dry unit weight, unconfined compressive strength

中图分类号:

TU 414

桂跃，杜国庆，张勤羽，宋文智，蔡超. 高含水率淤泥生石灰材料化土击实方法初探[J]. , 2010, 31(S1): 127-137.

GUI Yue, DU Guo-qing, ZHANG Qin-yu, SONG Wen-zhi, CAI Chao. Study of compaction method of lime-stabilized high water content sludge[J]. , 2010, 31(S1): 127-137.

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