Experiment on Loess Characteristics After Freeze-thaw Circle Based on Changes of Moisture Content and Temperature

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China Journal of Highway and Transport ›› 2013, Vol. 26 ›› Issue (3) : 44-49.

ZHOU Zhi-jun¹, LU Da-wei¹, SONG Wei², LIANG Han¹, YE Wan-jun³

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Abstract

In order to find out the change rules of loess characteristics after freeze-thaw circle, Q₂ loess samples with different moisture contents were prepared by moistening method. After freeze-thaw circle under different test temperatures and without water supply, tests of liquid and plastic limit, uniaxial consolidation and direct shear were conducted, and the relationships between physical and mechanical indexes of loess and moisture content and temperature were obtained. The results show that plastic index of samples after freeze-thaw circle with natural moisture content increases slightly with the decrease of temperature, compression modulus and shear strength decrease with the increase of moisture content; temperature influence on mechanical property of loess depends on the moisture content of samples, compression modulus decreases with the decrease of temperature, and the decreasing range changes with sample saturation in approximate quadratic function; when moisture content is less than critical value, cohesive force increases with the decrease of temperature, while cohesive force decreases when moisture content is more than critical value; internal friction angles of samples increase with the decrease of temperature, and the increasing range of internal friction angle increases with the increase of moisture content.

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road engineering / loess / experimental research / moisture content / plastic index / compression modulus / internal friction angle

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ZHOU Zhi-jun, LU Da-wei, SONG Wei, LIANG Han, YE Wan-jun. Experiment on Loess Characteristics After Freeze-thaw Circle Based on Changes of Moisture Content and Temperature[J]. China Journal of Highway and Transport, 2013, 26(3): 44-49

References

[1] 沈珠江.抗风化设计——未来岩土工程设计的一个重要内容[J].岩土工程学报,2004,26(6):866-869.
SHEN Zhu-jiang.Weathering Resistant Design－An Important Aspect of Future Development of Geotechnical Engineering Design[J].Chinese Journal of Geotechnical Engineering,2004,26(6):866-869.
[2]叶万军,杨更社,彭建兵,等.冻融循环导致洛川黄土边坡剥落病害产生机制的试验研究[J].岩石力学与工程学报,2012,31(1):199-205.
YE Wan-jun,YANG Geng-she,PENG Jian-bing,et al,Test Research on Mechanism of Freezing and Thawing Cycle Resulting in Loess Slope Spalling Hazards in Luochuan[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(1):199-205.
[3]李国玉,马巍,李宁,等.冻融对压实黄土工程地质特性影响的试验研究[J].水利与建筑工程学报,2010,8(4):5-7.
LI Guo-yu,MA Wei,LI Ning,et al.Experimental Research on Impact of Freezing and Thawing on Geotechnical Properties of Compacted Loess[J].Journal of Water Resources and Architectural Engineering,2010,8(4):5-7.
[4]连江波,张爱军,郭敏霞,等.反复冻融循环对黄土孔隙比及渗透性的影响[J].人民长江,2010,41(12):55-62.
LIAN Jiang-bo,ZHANG Ai-jun,GUO Min-xia,et al.Influence of Iterative Freezing-thawing on Void Ratio and Permeability Coefficient of Loess[J].Yangtze River,2010,41(12):55-62.
[5]毕贵权,张侠,李国玉,等.冻融循环对黄土物理力学性质影响的试验[J].兰州理工大学学报,2010,36(2):114-117.
BI Gui-quan,ZHANG Xia,LI Guo-yu,et al.Experiment of Impact of Freezing-thawing Cycle on Physico-mechanical Properties of Loess[J].Journal of Lanzhou University of Technology,2010,36(2):114-117.
[6]宋春霞,齐吉琳,刘奉银.冻融作用对兰州黄土力学性质的影响[J].岩土力学,2008,29(4):1077-1086.
SONG Chun-xia,QI Ji-lin,LIU Feng-yin.Influence of Freeze-thaw on Mechanical Properties of Lanzhou Loess[J].Rock and Soil Mechanics,2008,29(4):1077-1086.
[7]董晓宏,张爱军,连江波,等.非饱和冻融黄土固结蠕变特性研究[J].人民长江,2010,41(3):88-91.
DONG Xiao-hong,ZHANG Ai-jun,LIAN Jiang-bo,et al.Study on Consolidation Creep Behavior of Unsaturated Loess Suffering Freezing-thawing Cycles[J].Yangtze River,2010,41(3):88-91.
[8]王铁行,罗少锋,刘小军.考虑含水率影响的非饱和原状黄土冻融强度试验研究[J].岩土力学,2010,31(8):2378-2382.
WANG Tie-hang,LUO Shao-feng,LIU Xiao-jun.Testing Study of Freezing-thawing Strength of Unsaturated Undisturbed Loess Considering Influence of Moisture Content[J].Rock and Soil Mechanics,2010,31(8):2378-2382.
[9]牛富俊,马巍,吴青柏.青藏铁路主要冻土路基工程热稳定性及主要冻融灾害[J].地球科学与环境学报,2011,33(4):196-206.
NIU Fu-jun,MA Wei,WU Qing-bai.Thermal Stability of Roadbeds of the Qinghai-Tibet Railway in Permafrost Regions and the Main Freezing-thawing Hazards[J].Journal of Earth Sciences and Environment,2011,33(4):196-206.
[10]齐吉琳,马巍.冻融作用对超固结土强度的影响[J].岩土工程学报,2006,28(12):2082-2086.
QI Ji-lin,MA Wei.Influence of Freezing-thawing on Strength of Overconsolidated Soils[J].Chinese Journal of Geotechnical Engineering,2006,28(12):2082-2086.
[11]齐吉琳,程国栋,VERMEER P A.冻融作用对土工程性质影响的研究现状[J].地球科学进展,2005,20(8):887-894.
QI Ji-lin,CHENG Guo-dong,VERMEER P A.State-of-the-art of Influence of Freeze-thaw on Engineering Properties of Soils[J].Advances in Earth Science,2005,20(8):887-894.
[12]齐吉琳,张建明,朱元林.冻融作用对土结构性影响的土力学意义[J].岩石力学与工程学报,2003,22(增2):2690-2694.
QI Ji-lin,ZHANG Jian-ming,ZHU Yuan-lin.Influence of Freezing-thawing on Soil Structure and Its Soil Mechanics Significance[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(S2):2690-2694.
[13]WANG Da-yan,MA Wei,NIU Yong-hong,et al.Effect of Cyclic Freezing and Thawing on Mechanical Properties of Qinghai-Tibet Clay[J].Cold Regions Science and Technology,2007,48(1):34-43.

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Received	Published
2012-07-21	2013-05-01
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2014-01-03

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