Abstract:The inorganic materials adopted in the improvement of expansive soil engineering include lime and cement. During the construction process, the improving effect is greated influenced by the mixing uniformity of the soil conditioner and the soil. The above issue contains two aspects: one is the breakage of great soil aggregate in the excavation of expansive soil, the other is the reduction of high water content in the excavated soil. The method of “second mixing of lime” in cement-improved expansive soil is proposed, and the feasibility of construction process using the rotavator and strip sieve and the performing sequence of cement mixing is analyzed to provide theoretical suggestions for the the improvement of expansive soil.
刘鸣,宋建平,刘军,周跃峰. 膨胀土水泥改性施工均匀性试验研究[J]. 岩土工程学报, 2017, 39(s1): 59-63.
LIU Ming, SONG Jian-ping, LIU Jun, ZHOU Yue-feng. Uniformity of cement-improved expansive soil in mixing technology. Chinese J. Geot. Eng., 2017, 39(s1): 59-63.
[1] 刘特洪. 工程建设中膨胀土问题[M].北京:中国建筑工业出版社, 1997. (LIU Hong-te. Expansive soil problems in engineering construction[M]. Beijing: China Architecture and Building Press, 1997. (in Chinese)) [2] 郑建龙, 杨和平. 公路膨胀土工程[M]. 北京: 人民交通出版社, 2009. (ZHENG Jian-long, YANG He-ping. Expansive soil engineering in highway[M]. Beijing: China Communications Press, 2009. (in Chinese)) [3] 郭爱国, 刘观仕, 孔令伟, 等. 高速公路建设中中膨胀土特性的试验研究[J]. 岩土力学, 2005, 26(3): 397-403. (GUO Ai-guo, LIU Guan-shi, KONG Ling-wei, et al. Testing study on properties of mid-expansive soil for expressway construction[J]. Rock and Soil Mechanics, 2005, 26(3): 397-403. (in Chinese)) [4] 阎 飞. 膨胀土改性试验研究[J]. 土工基础, 2012, 26(3): 104-111. (YAN Fei. Research on soil improvement for expansive soil[J]. Soil Engineering and Foundation, 2012, 26(3): 104-111. (in Chinese)) [5] JTJ 034—2000公路路面基层施工技术规范[S]. 北京: 人民交通出版社, 2008. (JTJ 034—2000 Technical specifications for construction of highway roadbases[S]. Beijing: China Communications Press, 2008. (in Chinese)) [6] 王保田, 张福海. 膨胀土的改良技术与工程应用[M]. 北京: 科学出版社, 2009. (WANG Bao-tian, ZHANG Fu-hai. Improvement technology of expansive soil and engineering applications[M]. Beijing: Science Press, 2009. (in Chinese)) [7] 李庆鸿, 王炳龙, 俞 峰, 等. 新建时速200公里铁路改良膨胀土路基施工技术[M]. 北京: 中国铁道出版社, 2007. (LI Qing-hong, WANG Bing-long, YU Feng, et al. New speed 200 km railway expansive soil improvement roadbed construction technology[M]. Beijing: China Railway Press, 2007. (in Chinese)) [8] 沈卫国, 雷 莉, 周明凯. 水泥剂量的EDTA滴定方法的讨论[J]. 国外建材科技, 2004, 25(4): 102-104. (SHEN Wei-guo, LEI Li, ZHOU Ming-kai. Study on EDTA titration method in detecting cement content[J]. Science and Technology of Overseas Building Materials, 2004, 25(4): 102-104. (in Chinese)) [9] 梁雪森, 罗 海. EDTA滴定法测定水泥剂量的龄期效应与校正探讨[J]. 广东公路交通, 2003(1): 64-66. (LlANG Xue-seng, LUO Hai. Study on age effect and correction of EDTA titration in detecting cement content[J]. Guangdong Highway Communications, 2003(1): 64-66. (in Chinese))