| 析晶过程中盐渍土的微观结构变化 |
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| 引用本文： | 王春雷,姜崇喜,谢强,冯涛.析晶过程中盐渍土的微观结构变化[J].西南交通大学学报,2007,42(1):66-69. |
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| 作者姓名： | 王春雷 姜崇喜 谢强 冯涛 |
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| 作者单位： | 1. 西南交通大学土木工程学院,四川,成都,610031
2. 西南交通大学材料先进技术教育部重点实验室,四川,成都,610031 |
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| 基金项目： | 铁道部科技开发计划项目（2001G001-D-05） |
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| 摘 要： | 为了揭示易溶盐析晶过程中对盐渍土强度的影响机理,用环境扫描电子显微镜及X射线能谱（EDX）,对盐渍土的微观结构进行了分析,探讨了易溶盐析晶对土强度的影响;通过对自然脱水干燥前后盐渍土的强度试验,探讨了微观结构变化对土强度的影响.研究结果表明：析晶前后盐渍土的微观结构特征明显不同——析晶前为盐-土混容态包裹土团粒结构;析晶后为晶体土颗粒共混结构,从而使土体强度显著提高.
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| 关 键 词： | 盐渍土 易溶盐 微观结构 环境扫描电子显微镜 X射线能谱（EDX） |
| 文章编号： | 0258-2724（2007）01-0066-04 |
| 修稿时间： | 2006-02-20 |
Change in Microstructure of Salty Soil during Crystallization |
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| WANG Chunlei,JIANG Chongxi,XIE Qiang,FENG Tao.Change in Microstructure of Salty Soil during Crystallization[J].Journal of Southwest Jiaotong University,2007,42(1):66-69. |
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| Authors: | WANG Chunlei JIANG Chongxi XIE Qiang FENG Tao |
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| Institution: | 1. School of Civil Eng. , Southwest Jiaotong University, Chengdu 610031, China; 2. Key Lab of Advanced Material Technology, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | The microstructure of salty soil was investigated by using environmental scanning electron microscopy and X-ray energy-dispersion spectroscopy(EDX),and the effects of crystallization on strength of salty soil was discussed to open out mechanism of the effect.In addition,the effects of change in the microstructure on soil strength were researched.The research results show that the microstructure of salty soil is obviously different before and after crystallization.It is a soil aggregate structure wrapped by a mixture of salt and soil before crystallization,while a blending structure of crystal and soil to significantly enhance the strength of salty soil. |
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| Keywords: | salty soil soluble salt microstructure environmental scanning electron microscopy X-ray energy-dispersion spectroscopy(EDX) |
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