[1]杜延军,刘松玉,覃小纲,等.电石渣稳定过湿黏土路基填料路用性能现场试验研究[J].东南大学学报(自然科学版),2014,44(2):375-380.[doi:10.3969/j.issn.1001-0505.2014.02.026]
 Du Yanjun,Liu Songyu,Qin Xiaogang,et al.Field investigations on performance of calcium carbide residues stabilized over-wet clayey soils used as highway subgrade materials[J].Journal of Southeast University (Natural Science Edition),2014,44(2):375-380.[doi:10.3969/j.issn.1001-0505.2014.02.026]
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电石渣稳定过湿黏土路基填料路用性能现场试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第2期
页码:
375-380
栏目:
交通运输工程
出版日期:
2014-03-20

文章信息/Info

Title:
Field investigations on performance of calcium carbide residues stabilized over-wet clayey soils used as highway subgrade materials
作者:
杜延军1刘松玉1覃小纲1魏明俐1吴继峰12
1东南大学岩土工程研究所, 南京210096; 2江苏鸿基科技有限公司, 南京210008
Author(s):
Du Yanjun1 Liu Songyu1 Qin Xiaogang1 Wei Mingli1 Wu Jifeng12
1Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China
2Jiangsu Hongji Science and Technology Ltd., Nanjing 210008, China
关键词:
电石渣 过湿黏土 现场试验 强度 模量
Keywords:
calcium carbide residue over-wet clayey soil field investigation strength modulus
分类号:
U416
DOI:
10.3969/j.issn.1001-0505.2014.02.026
摘要:
通过对比电石渣和生石灰物理化学特征的异同,提出采用电石渣稳定过湿黏土作为路基填料. 通过改良填料路用承载性能的现场试验,对比研究2种改良填料的土基CBR、回弹模量(Mr)、贯入阻力(Rs)和动力锥贯入指数(DCPI)等力学指标在养护龄期内的变化规律. 试验结果表明:电石渣相对生石灰比表面积大、细粒含量高,在相同掺量和养护条件下更利于填料中改良反应的进行,可以更有效地改善过湿黏土填料的路用力学性能;电石渣改良填料的DCPI与其CBR和Mr的相关性更高;同时,电石渣较石灰具有明显的成本优势,并具有施工不扬尘、CO2排放少等社会环境效益. 电石渣稳定过湿黏土路基填料具有良好的工程应用前景.
Abstract:
A comparison of the physico-chemical properties of calcium carbide residues(CCR)and quicklime suggests that over-wet clayey soils stabilized by CCR is potentially used as highway subgrade materials. A field investigation on the mechanical performance of the CCR stabilized over-wet clayey soils is conducted. The effects of the curing time on the California bearing ratio(CBR), the resilient modulus(Mr), the penetration resistance(Rs), and the dynamic cone penetration index(DCPI)of the CCR and quicklime stabilized soils are discussed. The results show that the CCR exhibit larger specific surface area and higher fine-particle content than the quicklime, which is more in favor of the evolution of pozzolanic reactions between the binder(i.e., CCR or quicklime)and soils. Compared with the quicklime stabilized soils, the CCR stabilized soils have greater performance in terms of higher CBR, greater resilient modulus and penetration resistance, and higher degree of correlation between DCPI and CBR and that between DCPI and Mr. In addition, CCR has evident benefits in terms of its cost-effectiveness, no dust pollution and little CO2 emission during the construction. It is concluded that CCR is a viable, economical, and environmental-friendly binder in stabilizing over-wet clayey soils, which are used as subgrade materials.

参考文献/References:

[1] 王保田,陈桂奇,漆亭亭.石灰改良过湿土的施工工艺和力学性质[J].水利水电科技进展,2006,26(6): 54-57.
  Wang Baotian,Chen Guiqi,Qi Tingting.Construction technology and mechanical properties of lime-stabilized over wet soil[J].Advances in Science and Technology of Water Resources,2006,26(6): 54-57.(in Chinese)
[2] 方祥位,孙树国,陈正汉,等.GT型土壤固化剂改良土的工程特性研究[J].岩土力学,2006,27(9): 1545-1548.
  Fang Xiangwei,Sun Shuguo,Chen Zhenghan,et al.Study on engineering properties of improved soil by GT soil firming agent[J].Rock and Soil Mechanics,2006,27(9):1545-1548.(in Chinese)
[3] Akcanca F,Aytekin M.Effect of wetting-drying cycles on swelling behavior of lime stabilized sand-bentonite mixtures[J].Environmental Earth Sciences,2012,66(1): 67-74.
[4] 孙树林,郑青海,唐俊,等.碱渣改良膨胀土室内试验研究[J].岩土力学,2012,33(6): 1608-1612.
  Sun Shulin,Zheng Qinghai,Tang Jun,et al.Experimental research on expansive soil improved by soda residue[J].Rock and Soil Mechanics,2012,33(6): 1608-1612.(in Chinese)
[5] 孙树林,唐俊,郑青海,等.掺高炉水渣膨胀土的室内改良试验研究[J].岩土力学,2012,33(7): 1940-1944.
  Sun Shulin,Tang Jun,Zheng Qinghai,et al.Experimental study of expansive soil improved with granulated blast furnace slag(GBFS)[J].Rock and Soil Mechanics,2012,33(7): 1940-1944.(in Chinese)
[6] 庞巍,叶朝良,杨广庆,等.电石灰改良滨海地区盐渍土路基可行性研究[J].岩土力学,2009,30(4): 1068-1071.
  Pang Wei,Ye Chaoliang,Yang Guangqing,et al.Study of feasibility of calcium carbide dust improved inshore area saline soil for highway subgrade[J].Rock and Soil Mechanics,2009,30(4): 1068-1071.(in Chinese)
[7] 中华人民共和国交通部.JTG F10—2006 公路路基施工技术规范[S].北京: 人民交通出版社,2006.
[8] 中华人民共和国交通运输部.JTG E60—2008 公路路基路面现场测试规程[S].北京: 人民交通出版社,2008.
[9] 杨广庆,高民欢,张新宇.高速公路路基填料承载比影响因素研究[J].岩土工程学报,2006,28(1): 97-100.
  Yang Guangqing,Gao Minhuan,Zhang Xinyu.Study on influence factors of California bearing ratio(CBR)of expressway subgrade materials[J].Chinese Journal of Geotechnical Engineering,2006,28(1): 97-100.(in Chinese)
[10] Khattab S A A,Al-Mukhtar M,Fleureau J M.Long-term stability characteristics of a lime-treated plastic soil[J].Journal of Materials in Civil Engineering,2007,19(4): 358-366.
[11] Mohammad L N,Herath A,Abu-Farsakh M Y,et al.Prediction of resilient modulus of cohesive subgrade soils from dynamic cone penetrometer test parameters[J].Journal of Materials in Civil Engineering,2007,19(11): 986-992.
[12] Rogers C D F,Boardman D I,Papadimitriou G.Stress path testing of realistically cured lime and lime/cement stabilized clay[J].Journal of Materials in Civil Engineering,2006,18(2): 259-266.
[13] Roy B K.New look at DCP test with a link to AASHTO SN concept[J].Journal of Transportation Engineering,2007,133(4): 264-274.
[14] 覃小纲,杜延军,刘松玉,等.电石渣改良过湿黏土的物理力学试验研究[J].岩土工程学报,2013,35(S1): 175-180.
  Qin Xiaogang,Du Yanjun,Liu Songyu,et al.Experimental study on physical and mechanical properties of over-wet clayey soils stabilized by calcium carbide residues[J].Chinese Journal of Geotechnical Engineering,2013,35(S1): 175-180.(in Chinese)
[15] Boutet M,Dore G,Bilodeau J P,et al.Development of models for the interpretation of the dynamic cone penetrometer data[J].International Journal of Pavement Engineering,2011,12(3): 201-214.
[16] Smith R B,Pratt D N.A field study of in situ California bearing ratio and dynamic cone penetrometer testing for road subgrade investigations [J].Australian Road Research,1983,13(4):285-294.

备注/Memo

备注/Memo:
收稿日期: 2013-09-13.
作者简介: 杜延军(1972—),男,博士,教授,博士生导师,duyanjun@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51278100)、江苏省自然科学基金资助项目(BK2012022)、江苏省交通科技资助项目(08Y30).
引用本文: 杜延军,刘松玉,覃小纲,等.电石渣稳定过湿黏土路基填料路用性能现场试验研究[J].东南大学学报:自然科学版,2014,44(2):375-380. [doi:10.3969/j.issn.1001-0505.2014.02.026]
更新日期/Last Update: 2014-03-20