Uniformity of cement-improved expansive soil in mixing technology
-
摘要: 常用无机类膨胀土改性处理主要有石灰改性和水泥改性,就施工工艺而言,影响改性效果主要因素是改性剂与土料拌和的均匀性,主要包括两个方面问题：一是膨胀土开挖料超大土团的破碎问题;二是开挖料高含水率速降问题。针对水泥改性膨胀土施工工艺,开展了进一步的试验研究,确定了膨胀土料最大土团级配和含水率控制标准,分析了现场施工采用的旋耕机和条筛碎土新工法的可行性,为水泥改性膨胀土现场施工工艺提供理论指导和技术借鉴。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.
-
Keywords:
- South-to-North Water Diversion /
- expansive soil /
- improvement /
- grain size /
- water content /
- construction /
- cement /
- uniformity /
- standard
-
[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)) -
期刊类型引用(6)
1. 邓东平，石柱，彭文耀. 卸荷损伤效应下开挖边坡稳定性极限平衡分析. 工程地质学报. 2025(01): 327-340 . 
百度学术
2. 王超，伍永平，赵自豪，曹健，段会强，杨盼盼. 三点弯曲载荷下岩体偏置斜裂隙的应力强度因子. 金属矿山. 2024(02): 114-122 . 百度学术
3. 宋洋，马旭琪，赵常青，谢志辉，王富成，牛凯. 隐伏非贯通软弱夹层岩质边坡剪切蠕变特征及稳定性研究. 岩土工程学报. 2024(04): 755-763 . 本站查看
4. 徐树强，李营作，姜海涛，王智涛，李斌. 别斯库都克煤矿南帮边坡破坏机理及致灾模式. 露天采矿技术. 2023(02): 13-15+19 . 百度学术
5. 于远祥，秦光，陈盼. 露天矿烧变岩高边坡卸荷机理与稳定性研究. 西安科技大学学报. 2023(05): 941-951 . 百度学术
6. 李佳航，郭明伟，杨智. 基于边坡下滑方向的传递系数法. 岩石力学与工程学报. 2023(S2): 4261-4270 . 百度学术
其他类型引用(6)
计量
- 文章访问数:
- HTML全文浏览量: 0
- PDF下载量:
- 被引次数: 12
下载:
