Ground improvement using soil-cement columns: Experimental investigation
Ground improvement using soil-cement columns: Experimental investigation
复制标题
DOI：
10.1016/j.aej.2013.08.009
复制
发表时间：
2013-12-01
影响因子：
6.8
通讯作者：
Shahien, Marawan M.
中科院分区：
文献类型：
--
作者：
Farouk, Ahmed;Shahien, Marawan M.
在低相对密度的土壤上建造重型结构是一项具有挑战性的任务。深层搅拌法产生的水泥土搅拌桩是可以成功应用于克服这一挑战的土体加固技术之一。然而，这项技术在埃及还没有得到足够的重视。在本研究的第一部分，从尼罗河三角洲提取的两种不同的天然粉砂土与水泥混合，制备了不同水泥用量和不同水灰比的试件。养护后，对硬化后的试件进行测试，并研究其无侧限抗压强度。本文的第二部分研究了条形基础模型与水泥土加固尼罗河三角洲土的相互作用。研究的第一部分结果表明，即使在较低的水泥剂量下，所调查的尼罗河三角洲土的抗压强度也可以提高。从本研究的第二部分提取的结果表明，根据用于改善土壤的水泥土桩的数量和长度，可以获得高达80%的相当大的沉降减少。(C)2013年，由Elsevier B.V.代表亚历山大大学工程系制作和主办。
The construction of heavy structures on soils of low relative density is a challenging task. The inclusion of soil-cement columns produced by the deep mixing method is one of the soil stabilizing techniques that could be applied successfully to overcome this challenge. Nevertheless, this technique did not receive a considerable attention in Egypt yet. In the first part of this study, two different natural silty sand soils extracted from the Delta of the River Nile were mixed with cement to prepare samples of different cement doses and different water cement ratios. After curing, the hardened samples were tested and their unconfined compressive strength was investigated. The second part of this study investigates the interaction between a strip footing model and Nile deltaic soil improved by a group of soil- cement columns. Results of the first part of this study showed that the compressive strength of the investigated Nile delta soils could be increased even at lower values of cement doses. Results extracted from the second part of this study showed that a considerable settlement reduction up to 80% could be achieved depending on both the number and the length of the soil- cement columns that is used to improve the soil. (C) 2013 Production and hosting by Elsevier B.V. on behalf of Faculty of Engineering, Alexandria University.