Abstract：Oedometer and secondary consolidation tests were performed on six remolded clays with a wide spectrum of liquid limits to investigate the secondary consolidation behavior. It is understood that the void ratio and the void ratio at liquid limit are the controlling factors in the secondary deformation analysis. This study also makes it clear that the coefficient of the secondary consolidation decreases with the decrease in the void ratio, and increases with the increase in the liquid limit under the same void ratio. A new definition of the coefficient of secondary consolidation is given in the bilogarithmic ln(1+e)-logt plot. The quantitative evaluation of the relationship between the secondary consolidation coefficient in the bilogarithmic plot and the void ratio at the liquid limit (eL) is also proposed. A simple method for predicting the settlement of the secondary consolidation for remolded clays is also recommended.
曾玲玲,洪振舜,刘松玉,陈福全. 重塑黏土次固结性状的变化规律与定量评价[J]. 岩土工程学报, 2012, 34(8): 1496-1500.
ZENG Ling-ling, HONG Zhen-shun, LIU Song-yu, CHEN Fu-quan. Variation law and quantitative evaluation of secondary consolidation behavior for remolded clays. Chinese J. Geot. Eng., 2012, 34(8): 1496-1500.
 LEROUEIL S, TAVENAS F, BRUCY F, et al. Behavior of destructured natural clays[J]. Journal of the Geotechnical Engineering Division, 1979, 105(6): 759–778. BURLAND J B. On the compressibility and shear strength of natural clays[J]. Géotechnique, 1990, 40(3): 329-378. HIGHT D W, BOND A J, LEGGE J D. Characterization of the Bothkennar clay: an overview[J]. Géotechnique, 1992, 42(2): 303–347. HONG Z S, HAN J. Evaluation of sample quality of sensitive clay using intrinsic compression concept[J]. Journal of Geotechnical and Geoenvironmental Engineering, ASCE. 2007, 133(1): 83–90. HONG Z S, YIN J, CUI Y J. Compression behaviour of reconstituted soils at high initial water contents[J]. Géotechnique, 2010: 60(4): 691–700. BJERRUM L. Engineering geology of normally consolidated marine clays as related to the settlement of buildings[J]. Géotechnique, 1967, 17(2): 83–118. YIN J H, GRAHAM J. Viscous–elastic–plastic modeling of one-dimensional time-dependent behaviour of clay[J]. Canadian Geotechnical Journal, 1989, 26(1): 199–209. 殷宗泽, 张海波, 朱俊高, 等. 软土的次固结[J]. 岩土工程学报, 2003, 25(5): 521–526. (YIN Zong-ze, ZHANG Hai-bo, ZHU Jun-gao, et al. Secondary consolidation of soft soils[J]. Chinese Journal of Geotechnical Engineering, 2003, 25(5): 521–526. (in Chinese)) MESRI G, GODLEWSKI P M. Time and stress- compressibility interrelationship[J]. Journal of Geotechnical Engineering Division, ASCE, 1977, 103(5): 417–430. MESRI G, STARK T D, AJLOUNI M A, et al. Secondary compression of peat with or without surcharging[J]. Geotechnical Engineering, ASCE, 1997, 123(5): 411–421. MESRI G, VARDHANABHUTI B. Secondary compression[J]. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 2005, 131(3): 398–401. BUTTERFIELD R. A natural compression law for soils[J]. Géotechnique, 1979, 29(4): 469–480. ONITSUKA K, HONG Z S, HARA, et al. Interpretation of oedometer test data for natural clays[J]. Soils and Foundations, 1995, 35(3): 61–70. ZENG L L, LIU S Y. A calculation method of secondary compression index for natrual sedimentary clays using void index[C]// Geo-Shanghai International Conference. Shanghai, 2010: 14–21. 洪振舜, 刘志方, 郭海轮, 等. 天然沉积饱和有明粘性土的Burland孔隙指数与归一化含水率的关系[J]. 岩土力学, 2004, 25(11): 1698–1701. (HONG Zhen-shun, LIU Zhi-fang, GUO Hai-lun, et al. Relationship between void index and normalized water content for natural sedimentary Ariake clays[J]. Rock and Soil Mechanics, 2004, 25(11): 1698–1701. (in Chinese)) 曾玲玲, 刘松玉, 洪振舜, 等. 天然沉积结构性土的次固结变形机理分析[J]. 岩土工程学报, 2010, 32(7): 1042–1046. (ZENG Ling-ling, LIU Song-yu, HONG Zhen-shun, et al. Analysis of secondary consolidation deformation mechanism of natural clays[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(7): 1042–1046. (in Chinese)) JTG E40—2007公路土工试验规程[S]. 2007. (JTG E40—2007 Test methods of soils for highway engineering[S]. 2007. (in Chinese)) ZENG L L, HONG Z S, CAI Y Q, et al. Change of hydraulic conductivity during compression of undisturbed and remolded clays[J]. Applied Clay Science, 2011, 51(1/2): 86–93. IMAI G, TANAKA Y, SAEGISA H. One-dimensional consolidation modeling based on the isotach law for normally consolidated clays[J]. Soils and Foundations, 2003, 43(4): 173–188. NAGARAJ T S, PANDIAN N S, NARASIMAHA RAJU P S R. Stress state-permeability relationships for fine- grained soils[J]. Géotechnique, 1993, 43(2): 333–336. HONG Z S, LIU S Y. NEGAMI T. Strength sensitivity of marine Ariake clays[J]. Marine Georesources and Geotechnology, 2005, 23(3): 221–233. SCHMERTMANN J H. The mechanical aging of soils[J]. Journal of the Geotechnical Engineering Division, ASCE, 1991, 117(9): 1288–1330.