| 滨海盐渍土的工程地质问题与防护固化方法 |
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| 引用本文： | 柴寿喜,王晓燕,魏丽,王沛,仲晓梅. 滨海盐渍土的工程地质问题与防护固化方法[J]. 工程勘察, 2009, 0(7): 1-4 |
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| 作者姓名： | 柴寿喜 王晓燕 魏丽 王沛 仲晓梅 |
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| 作者单位： | 天津城市建设学院天津市软土特性与工程环境重点实验室;中水北方勘测设计研究有限责任公司勘察院; |
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| 基金项目： | 国家自然科学基金(40772166); 天津市自然科学基金(07JCYBJC12900); 天津市建设管理委员会科技计划项目(2007-43) |
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| 摘 要： | 滨海盐渍土因土的含水率降低引起氯化钠结晶，土发生盐胀；因土的含水率增加引起盐颗粒溶解，形成孔隙，土发生溶陷；因土中含有较多的Cl^-和SO4^2-，对钢材和混凝土具有腐蚀性；因环境湿度大及土中的Na^＋水化作用强烈，导致土吸湿软化。因此，在工程应用时，需采取底部铺砂砾石或土工膜等隔离或封闭措施，以控制滨海盐渍土的盐胀、溶陷和吸湿软化问题；或掺入水泥、石灰、粉煤灰和SH固土剂进行改性固化处理，以提高固化土的强度和水稳性。
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| 关 键 词： | 滨海盐渍土 盐胀 溶陷 腐蚀 吸湿软化 固化土 |
Analysis on engineering geological problems of inshore saline soil and treatment measures |
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| Chai Shouxi,Wang Xiaoyan,Wei Li,Wang Pei,Zhong Xiaomei. Analysis on engineering geological problems of inshore saline soil and treatment measures[J]. Geotechnical Investigation & Surveying, 2009, 0(7): 1-4 |
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| Authors: | Chai Shouxi Wang Xiaoyan Wei Li Wang Pei Zhong Xiaomei |
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| Affiliation: | Chai Shouxi~1,Wang Xiaoyan~2,Wei Li~1,Wang Pei~1,Zhong Xiaomei~1(1.Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment,Tianjin Institute of Urban Construction,Tianjin 300384,China,2.Institute of Investigation,China Water Resources,Beifang Investigation,Design and Research Co.Ltd.,Tianjin 300222,China) |
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| Abstract: | The crystallization of salt causes the expansion of inshore saline soil because of the water content decreasing,and the resolution of the salt particles results in the depression of the soil because of the water content increasing.There are lots of Cl~-and SO_4~(2-) existed in the soil,which results in the corrosion of steel and concrete.Owing to the saline soil with lots of Na~+ and the high environmental humidity the soil will be soft after the water absorption.In view of the above engineering geological ... |
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| Keywords: | inshore saline soil salt expansion depression corrosion softness solidified soil |
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