| 硫酸铵和硫酸钠溶液侵蚀下水泥土力学性质试验研究 |
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| 引用本文： | 陈洪祥,卢世军,邓通发,彭勃,訾岩珂.硫酸铵和硫酸钠溶液侵蚀下水泥土力学性质试验研究[J].井冈山大学学报（自然科学版）,2017(6):81-87,92. |
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| 作者姓名： | 陈洪祥 卢世军 邓通发 彭勃 訾岩珂 |
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| 作者单位： | 江西公路开发总公司, 江西, 南昌 330038,江西省交通建设工程质量监督管理局, 江西, 南昌 3300082,江西理工大学建筑与测绘工程学院, 江西, 赣州 341000;江西省环境岩土与工程灾害控制重点实验室, 江西, 赣州 341000,江西理工大学建筑与测绘工程学院, 江西, 赣州 341000;江西省环境岩土与工程灾害控制重点实验室, 江西, 赣州 341000,江西理工大学建筑与测绘工程学院, 江西, 赣州 341000;江西省环境岩土与工程灾害控制重点实验室, 江西, 赣州 341000 |
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| 基金项目： | 江西省自然科学基金项目（2015BAB206054），江西省交通厅科技项目（2014C0007） |
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| 摘 要： | 为研究硫酸铵和硫酸钠溶液侵蚀下水泥土的力学性质,将制备的水泥土试块置于不同浓度的硫酸铵和硫酸钠溶液中进行长期(150 d)浸泡,通过无侧限抗压强度试验,得到无侧限抗压强度随侵蚀溶液浓度和侵蚀时间的变化规律,分析硫酸铵和硫酸钠溶液侵蚀对水泥土力学性质的影响。研究结果表明:硫酸铵和硫酸钠溶液对水泥土均具有侵蚀作用,浓度越大,侵蚀越显著;浸泡时间越久,侵蚀越明显;在侵蚀早期,硫酸钠浓度在一定范围内对水泥土的抗压强度增长有利,在短期内硫酸钠溶液可以提高水泥土试块无侧限抗压强度;在相同SO_4~(2-)浓度下,硫酸铵溶液侵蚀下的水泥土抗压强度要低于硫酸钠溶液侵蚀下的抗压强度,铵盐会对水泥土的力学性质产生影响;硫酸盐对水泥土的侵蚀作用要远大于铵盐对水泥土侵蚀作用。
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| 关 键 词： | 水泥土 侵蚀试验 无侧限抗压强度 离子浓度 侵蚀时间 |
| 收稿时间： | 2017/3/22 0:00:00 |
| 修稿时间： | 2017/6/16 0:00:00 |
EXPERIMENTAL STUDY ON STRENGTH OF CEMENT SOIL UNDER (NH4)2 SO4 AND NaSO4 SOLUTION INFLUENCE |
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| CHEN Hong-Xiang,LU Shi-Jun,DENG Tong-f,PENG Bo and ZI Yan-ke.EXPERIMENTAL STUDY ON STRENGTH OF CEMENT SOIL UNDER (NH4)2 SO4 AND NaSO4 SOLUTION INFLUENCE[J].Journal of Jinggangshan University(Natural Sciences Edition),2017(6):81-87,92. |
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| Authors: | CHEN Hong-Xiang LU Shi-Jun DENG Tong-f PENG Bo and ZI Yan-ke |
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| Institution: | Jiangxi highway development corporation, Nanchang, Jiangxi 330038,Jiangxi province transportation construction engineering quality supervision and administration, Nanchang, Jingxi 330000,School of Architectural and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou, Jingxi 341000, China;Jiangxi Provincial Key Laboratory of Geotechnical Engineering and Environmental Disaster Control, Ganzhou, Jingxi 341000, China,School of Architectural and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou, Jingxi 341000, China;Jiangxi Provincial Key Laboratory of Geotechnical Engineering and Environmental Disaster Control, Ganzhou, Jingxi 341000, China and School of Architectural and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou, Jingxi 341000, China;Jiangxi Provincial Key Laboratory of Geotechnical Engineering and Environmental Disaster Control, Ganzhou, Jingxi 341000, China |
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| Abstract: | To study the mechanics properties of cement soil under NH4+ and SO42- interaction erosion, the preparation of soil-cement block under different concentrations of ammonium sulfate and sodium sulfate solution for long-term soaking (150 d), by the unconfined compressive strength test, the unconfined compressive strength with the change rule of erode solution concentration and erosion time were obtained, NH4+ and SO42- coupled erosion effect on the mechanical properties of soil were analyzed. The results show that ammonium sulfate and sodium sulfate solution of cement-soil are erosion, the greater the concentration, the erosion of the more significant; The longer soaking time, erosion, the more obvious; In the early erosion, sodium sulfate concentration within a certain range on the compressive strength of cement-treated soil growth advantage, sodium sulfate solution in a short time can improve the soil block unconfined compressive strength; Under the same concentration of SO42-, ammonium sulfate solution under the erosion of soil erosion is lower than the compressive strength of the sodium sulfate solution under compressive strength, ammonium salt affect the mechanical properties of cement-treated soil; Sulfate soil erosion to water than ammonium salt of soil erosion. |
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| Keywords: | cement soil erosion test unconfined compressive strength ion concentration erosion of time |
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