Performance of improved soil subgrade under freeze-thaw cycles in flood retarding basin

doi:10.3969/j.issn.1000-2006.2016.03.026

WANG Haibo, ZHAO Zhifeng, ZHANG Tian

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2016, Vol. 40 ›› Issue (03) : 156-162.

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JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2016, Vol. 40 ›› Issue (03) : 156-162. DOI: 10.3969/j.issn.1000-2006.2016.03.026

Performance of improved soil subgrade under freeze-thaw cycles in flood retarding basin

WANG Haibo, ZHAO Zhifeng, ZHANG Tian

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Abstract

In order to study the performance of the improved soil subgrade in the Yellow River flood retarding basin in northern Jiangsu Province, twelve series of samples of the improved soil subgrade were prepared by mixing cement, lime and fly ash with designed proportions, and then subjected to designated freezing-thawing(FT)cycles. Thereafter, the properties of compression strength and mass loss(anti-erosion)of the samples were examined. Research results showed that the compression strength and integrity of the subgrades decreased with the increase in FT cycles, and the decrease rate was obviously dependent upon the different stages during those cycles. The cement and fly ash mixture was superior to the cement and lime mixture under freeze-thaw cycles, because the soil subgrade modified with cement/lime became brittle and could be easily disintegrated. In term of individual modifier, cement can improve cohesion significantly. At an incorporation content between 2% and 7%, the cement can delay the decrease of compression strength and enhance erosion resistance of the subgrade. Lime could improve the resistance to freeze and thaw to certain extent, but may contribute to mass loss and soil erosion due to its thermal expansion nature. Similar to cement, fly ash can also delay strength decrease and maintain the integrity of soil subgrade. This study investigated the influence of different modifier on the properties of compression strength and mass loss, suggesting that the optimum mixture was 5% cement and 15% fly ash. The result can be applied to the flood retarding basin for enhancing the subgrade properties under freeze-thaw cycles.

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WANG Haibo, ZHAO Zhifeng, ZHANG Tian. Performance of improved soil subgrade under freeze-thaw cycles in flood retarding basin[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2016, 40(03): 156-162 https://doi.org/10.3969/j.issn.1000-2006.2016.03.026

References

[1] Li G X, Wei H L, Han Y H. Sedimentation in the Yellow River delta, part I. flow and suspended sediment structure in the upper distributary and the estuary[J].Marine Geology,1998,149:93-111.
[2] 宋修广, 张宏博, 陈晓燕, 等. 黄泛区粉土路基病害调查与路面结构改进应用研究[R]. 济南: 山东大学, 2008. Song X G, Zhang H B, Chen X Y, et al. The application research of silt subgrade disease investigation and the improvement of pavement structure on Yellow River flooding area[R]. Ji'nan: Shandong University, 2008.
[3] 肖军华, 刘建坤, 彭丽云, 等. 黄河冲积粉土的密实度及含水率对力学性质影响[J]. 岩土力学, 2008, 29(2): 410-414. Xiao J H, Liu J K, Peng L Y, et al. Effects of compactness and water Yellow-River alluvial silt content on its mechanical behaviors[J].Rock and Soil Mechanics,2008,29(2):410-414.
[4] 姚占勇. 黄河冲淤积平原土的工程特性研究[D]. 天津: 天津大学, 2006. Yao Z Y. Engineering properties on Yellow River alluvial-plain soil [D].Tianjin: Tianjin University, 2006.
[5] 朱志铎, 刘松玉, 孙海军. 江苏徐宿地区粉土的基本特性及加固方法研究[J]. 岩土力学, 2004, 25(7): 1155-1158. Zhu Z D, Liu S Y, Sun H J.Study of stabilized silt in Xu-Su area[J].Rock and Soil Mechanics, 2004, 25(7): 1155-1158.
[6] 王海俊, 余湘娟, 殷宗泽, 等. 粉土用作路堤填料的试验研究[J]. 防灾减灾工程学报, 2006, 26(4): 468-471. Wang H J, Yu X J, Yin Z Z, et al. Research on silt as embankment filling material [J].Journal of Disaster Prevention and Mitigation Engineering,2006,26(4): 468-471.
[7] 夏琼,杨有海,耿煊.粉煤灰与石灰、水泥改良黄土填料的试验研究[J]. 兰州交通大学学报,2008, 27(03):40-47. Xia Q, Yang Y H, Geng X, et al. Research on silt as embankment filling material [J]. Journal of Lanzhou Jiaotong University,2008,27(03): 40-47.
[8] 王勇, 李国芬, 黄凯健, 等. 水泥/石灰对滨海盐渍路基土性能的影响[J]. 南京林业大学学报(自然科学版),2014,38(5): 165-169. Doi:10.3969/j.issn.1000-2006.2014.05.033. Wang Y, Li G F, Huang K J, et al. Effect of cement and limestone on performance of inshore saline subgrade soil [J]. Journal of Nanjing Forestry University(Natural Sciences Edition), 2014, 38(5): 165-169.
[9] 李强, 杨涵明, 王荣勇, 等. 滞洪区路基填料改良土击实特性研究[J]. 现代交通技术, 2011, 8(2): 13-15. Li Q, Yang H M, Wang R Y, et al. Study on compaction characteristics of embankment improved soils in detention areas[J]. Modern Transportation Technology, 2011, 8(2): 13-15.
[10] 何忠意, 王海波, 徐文平. 滞洪区路堤改良路基填料CBR试验研究[J]. 南华大学学报(自然科学版),2011, 25(2):100-105. He Z Y,Wang H B, Xu W P. The Study of CBR test of improved soils of embankment in flood storage and detention areas[J]. Journal of University of South China(Science and Technology),2011, 25(2):100-105.
[11] 郭振宽, 王海波, 胡昕. 滞洪区低路堤填料强度特性[J]. 建筑技术, 2012, 43(4): 354-357. Guo Z K, Wang H B, Hu X. Strength property of improved soils of low embankment in flood retarding basin [J]. Architecture Technology, 2012, 43(4): 354-357.
[12] Basyigit C, Akkurt I, Altindag R, et al. The effect of freezing-thawing(F-T)cycles on the radiation shielding properties of concretes[J]. Building and Environment, 2006, 41(8): 1070-1073.
[13] 张继周,缪林昌,杨振峰. 冻融条件下岩石损伤劣化机制和力学特性研究[J]. 岩石力学与工程学报,2008,27(8):1688-1694. Zhang J Z, Miao L X,Yang Z F. Research on rock degradation and deterioration mechanisms and mechanical characteristics under cyclic freezing-thawing[J]. Chinese Journal of Rock Mechanics and Engineering,2008,27(8):1688-1694.
[14] 董祥, 沈正. 纤维品种和掺量对混凝土抗冻性及微观结构的影响[J]. 南京林业大学学报(自然科学版), 2010,34(5): 91-95. Doi:10.3969/j.issn.1000-2006.2010.05.020. Dong X, Shen Z. Effects of fiber types and contents on frost resistance of concrete and their microstructure[J].Journal of Nanjing Forestry University(Natural Sciences Edition),2010,34(5):91-95.
[15] Hori M, Morihiro H. Micromechanical analysis on deterioration due to freezing and thawing in porous brittle materials [J]. International Journal of Engineering Science, 1998,36(4): 511-522.
[16] 张登良. 加固土原理[M]. 北京:人民交通出版社,1990.

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