Abstract:The compaction performance and compressive strength of materials are important indices need to be considered when selected in foundation treatment. The two factors can be used as quality control parameters in construction and have important they are influence on engineering properties. Lime and slag are both lightweight materials. The rational use of lime-slag mixed materials in foundation treatment can achieve the results of reducing the additional stress in foundation, and it is an economic and environmentally friendly way because vast industrial waste can be used. The strength increasing mechanism of lime-slag mixed materials is theoretically analyzed. Compaction tests and unconfined compressive strength tests are on the lime-slag mixed materials with different mix proportions by volume are carried out. The compaction property and unconfined compressive strength are obtained. Combined with an engineering example, a foundation treatment project using piles of lime-slag mixed lightweight materials is analyzed and calculated, indicating that this kind of mixed materials can be used in foundation treatment.
闫澍旺, 李嘉, 张京京, 孙立强. 石灰炉渣轻质混合料处理地基试验研究及工程应用[J]. 岩土工程学报, 2015, 37(zk1): 6-10.
YAN Shu-wang, LI Jia, ZHANG Jing-jing, SUN Li-qiang. Experimental research and engineering application of lime-slag mixed materials used in foundation treatment. Chinese J. Geot. Eng., 2015, 37(zk1): 6-10.
[1] AHMARUZZAMAN M. A review on the utilization of fly ash[J]. Progress in Energy and Combustion Science, 2010(36): 327-363. [2] 姚芝茂, 徐 成, 赵丽娜. 铅冶炼工业综合固体废物管理研究[J]. 中国有色金属, 2010(6): 40-45. (YAO Zhi-mao, XU Cheng, ZHAO Li-na. Study on integrated management of solid wastes in lead smelting industry[J]. China Nonferrous Metallurgy, 2010(6): 40-45. (in Chinese)) [3] DERMATAS Dimitris, MENG Xiao-guang. Utilization of fly ash for stabilization/solidification of heavy metal contaminated soils[J]. Engineering Geology, 2003(70): 377-394. [4] JGJ 79—2002 建筑地基处理技术规范[S]. 北京: 中国建筑工业出版社, 2002. (JGJ 79—2002 Technical code for ground treatment and buildings[S]. Beijing: China Architecture and Building Press, 2002. (in Chinese)) [5] 汪 稔, 陈善雄. 用石灰桩加固软弱地基[J]. 岩土力学, 1994, 15(3): 19-25. (WANG Ren, CHEN Shan-xiong. Stabilizing soft foundation with quicklime piles[J]. Rock and Soil Mechanics, 1994, 15(3): 19-25. (in Chinese)) [6] 龚晓南. 广义复合地基理论及工程应用[J]. 岩土工程学报, 2007, 29(1): 1-13. (GONG Xiao-nan. Generalized composite foundation theory and engineering application[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(1): 1-13. (in Chinese)) [7] SL237—1999 土工试验规程[S]. 北京: 中国建筑工业出版社, 1999. (SL237—1999 Specification of soil test[S]. Beijing: China Architecture and Building Press, 1999. (in Chinese)) [8] JTG E51—2009 公路工程无机结合料稳定材料试验规程[S]. 北京: 人民交通出版社, 2009. (JTG E51—2009 Test methods of materials stabilized with inorganic binders for highway engineering[S]. Beijing: China Communications Press, 2009. (in Chinese)) [9] 郭玉彬, 李 虹. 曹妃甸吹填砂土地基强夯施工工艺试验研究[J]. 中国港湾建设, 2014(1): 57-84. (GUO Yu-bin, LI Hong. Experimental study on dynamic consolidation technology in Caofeidian dredger fill sandy soil foundation[J]. China Harbour Engineering, 2014(1): 57-84. (in Chinese))