|Table of Contents|

Treatment for salt expansion of sulphate saline soil(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2013年03期
Page:
32-36
Research Field:
道路工程
Publishing date:

Info

Title:
Treatment for salt expansion of sulphate saline soil
Author(s):
QU Bo1;  GU Qiang-kang1;  LI Qiang2;  LIAN Jie1;  YIN Bo-cheng1
1. The Engineering Institute, Air Force Engineering University, Xi'an 710038, Shaanxi, China; 2. Survey and Design Group of Shenyang Mrafs, Shenyang 110015, Liaoning, China
Keywords:
road engineering;  sulphate saline soil;  NaCl;  CaCl2;  salt heaving treatment
PACS:
U416.166
DOI:
-
Abstract:
In order to decrease the salt expansion of sulphate saline soil, NaCl and CaCl2 were used to treat the sulphate saline soil respectively. NaCl and CaCl2 were added in the soil samples with salt content of 2%,4% and 6% in the experiment. The amounts of NaCl and CaCl2 were based on the value of Cl-/SO42- which was at 2, 4, 6 and 8. The results were compared. Moreover, the function mechanism of NaCl and CaCl2 when they were used to treat the sulphate saline soil could be proved through analyzing the change of salt expansion of the sulphate saline soil when the salt content was different. The results show that Cl- has a good effect and the effect is especially good when Cl-/SO42- is between 4 and 6; CaCl2 has double action when the amount of which is low; however, when the amount of CaCl2 is high, it has some side effect which is caused by the expansion of CaCl2 and CaSO4. The results of the study can provide effective reference for the ground treatment of sulphate saline soil in the practical projects. 3 tabs, 4 figs, 15 refs.

References:

[1] 史桃开,徐攸在.盐渍土地基的膨胀性[J].工程勘察,1994(3):17-21. SHI Tao-kai,XU You-zai.The expansibility of saline soil ground[J].Geotechnical Investigation & Surveying,1994(3):17-21.(in Chinese)
[2]徐攸在.盐渍土地基[M].北京:中国建筑工业出版社,1993. XU You-zai.Saline soil ground[M].Beijing:China Architecture and Building Press,1993.(in Chinese)
[3]周 伟,胡文寿,穆冬林,等.高山湖盆区特殊性工程岩土[J].地球科学与环境学报,2006,28(1):65-69. ZHOU Wei,HU Wen-shou,MU Dong-lin,et al.Special geotechnique in lake basin on high moutain[J].Journal of Earth Sciences and Environment,2006,28(1):65-69.(in Chinese)
[4]张莎莎,杨晓华,谢永利,等.路用粗粒盐渍土盐胀特性[J].长安大学学报:自然科学版,2009,29(1):20-25. ZHANG Sha-sha,YANG Xiao-hua,XIE Yong-li,et al.Salt-expansion laws of coarse grained salty soil in road subgrade[J].Journal of Chang'an University:Natural Science Edition,2009,29(1):20-25.(in Chinese)
[5]包卫星,李志农.喀什地区不同盐渍土冻融变形特性试验[J].长安大学学报:自然科学版,2008,28(2):26-30. BAO Wei-xing,LI Zhi-nong.Testing on transmutation properties of saline soil under freezing and thawing cycles in Kashi,Xinjiang[J].Journal of Chang'an University:Natural Science Edition,2008,28(2):26-30.(in Chinese)
[6]王海春,井 浩.硫酸盐渍土盐胀机理及抑制措施[J].青海师范大学学报:自然科学版,2006(4):80-85. WANG Hai-chun,JING Hao.The salt heaving mechanism and restrain method of sulphate salty soil[J].Journal of Qinghai Normal University:Natural Science,2006(4):80-85.(in Chinese)
[7]高江平,杨荣尚.含氯化钠硫酸盐渍土在单向降温时水分和盐分迁移规律的研究[J].西安公路交通大学学报,1997,17(3):22-25. GAO Jiang-ping,YANG Rong-shang.Study on the moving pattern of water and salt with directional temperature lowering in sulphate salty soil containing NaCl[J].Journal of Xi'an Highway University,1997,17(3):22-25.(in Chinese)
[8]李世芳.冰冻盐渍土地区公路盐胀和冻胀综合病害[J].筑路机械与施工机械化,2009,26(2):60-63. LI Shi-fang.Salt and frost heaving composite diseases of frozen saline soil area[J].Road Machinery & Construction Mechanization,2009,26(2):60-63.(in Chinese)
[9]平树江,李炜光,申爱琴,等.黄河中下游冲积平原细粒氯盐渍土的加固机理[J].长安大学学报:自然科学版,2008,28(4):21-26. PING Shu-jiang,LI Wei-guang,SHEN Ai-qin,et al.Reinforcement mechanism of fine chlorine saline soil on middle and lower alluvial plains of Yellow River[J].Journal of Chang'an University:Natural Science Edition,2008,28(4):21-26.(in Chinese)
[10]郭军辉,阎长虹,夏良斌,等.某一级公路路基填土膨胀性试验[J].地球科学与环境学报,2007,29(1):85-89. GUO Jun-hui,YAN Chang-hong,XIA Liang-bin,et al.Experimental study on swelling property of subgrade soil in a first-class highway[J].Journal of Earth Sciences and Environment,2007,29(1):85-89.(in Chinese)
[11]毛新虎.公路膨胀土路堑边坡防护方案探讨[J].地球科学与环境学报,2004,26(4):49-53. MAO Xin-hu.Discuss of cutting slope treatment project for expansive soil on highway[J].Journal of Earth Sciences and Environment,2004,26(4):49-53.(in Chinese)
[12]Everett D H.The thermo dynamics of frost damage to porous solids[J].Transactions of the Faraday Society,1961(57):1541-1551.
[13]Weisbrod N,Niemet M R,Rockhold M L,et al.Migration of saline solutions in variably saturated porous media[J].Journal of Contaminant Hydrology,2004,72(1-4):109-133.
[14]Miyamoto S,Chacon A,Hossain M,et al.Soil salinity of urban turfareas irrigated with saline water:1.spatial variability[J].Landscape and Urban Planning,2005,71(2-4):233-241.
[15]JTG E40—2007,公路土工试验规程[S]. JTG E40—2007,Test methods of soils for highway engineering[S].(in Chinese)

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Last Update: 2013-05-30