| pH值对有机质淤泥真空预压效果影响试验研究 |
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| 引用本文： | 冯诚,王保田,李守德. pH值对有机质淤泥真空预压效果影响试验研究[J]. 工程勘察, 2010, 38(1): 23-26,32 |
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| 作者姓名： | 冯诚 王保田 李守德 |
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| 作者单位： | 河海大学岩土力学与堤坝工程教育部重点实验室,南京,210098;河海大学岩土工程研究所,南京,210098;河海大学岩土力学与堤坝工程教育部重点实验室,南京,210098;河海大学岩土工程研究所,南京,210098;河海大学岩土力学与堤坝工程教育部重点实验室,南京,210098;河海大学岩土工程研究所,南京,210098 |
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| 摘 要： | 真空预压是一种能够广泛应用于大面积软基处理的方法。在前人研究有机质对土体性质影响的基础上,本文研究了因土体pH升高促使有机质溶解对土体性质的影响:有机质溶解降低了土体液限、塑限、塑性指数和渗透系数,提高了低压力下土体固结系数。作者利用有机质的这种性质改良淤泥,然后进行真空预压模型试验。试验结果表明土体pH值的升高不仅明显提升了排水量,还有效提高了土体强度,为有机质淤泥真空预压方法提供了一种新思路。
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| 关 键 词： | 真空预压 有机质 pH 模型试验 排水量 |
The vacuum pre-loading model test of organic soil |
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| Feng Cheng,Wang Baotian. The vacuum pre-loading model test of organic soil[J]. Geotechnical Investigation & Surveying, 2010, 38(1): 23-26,32 |
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| Authors: | Feng Cheng Wang Baotian |
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| Affiliation: | Feng Cheng~,Wang Baotian~ |
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| Abstract: | Vacuum preloading has been applying for many foundation treatment projects.Based on former study by Leonard A(2002),the effects of pH on soil and the organic matter were studied in this paper.It was found that the presence of dissolution of the organic matter reduces the liquid limit,plastic limit,plasticity index,and the permeability coefficient of the soil.It also enhances the consolidation velocity in the range of low-pressure.By making use of this characteristic,the vacuum preloading test incorporating ... |
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| Keywords: | vacuum preloading organic pH model test displacement |
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