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Swell-shrinking Deformation of Fissured Lateritic Soil in Wetting-Drying

机译：干湿土壤中裂隙性红壤的胀缩变形

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Swell-shrinking deformation of undisturbed fissured lateritic soil in wetting-drying path is analyzed through laboratory tests. The swell-shrink deformation of specimen in the four wetting-drying cycles was monitored, and the shrinkage and expansion ratios are summarized. The results show that the lateritic soil rich in fissures presents some particular characters in wetting-drying path; the expansion after the first wetting path is obvious larger than the shrinkage after the first drying path; Expansion in the following every wetting-drying cycle is slightly larger than the shrinkage. The height of the specimen is gradually increased during the wetting-drying cyclic process, and the final height of expansion presents a trend of being stabilized. Increasing wetting-drying cyclic times is associated with increasing absolute expansion ratio, and the rate of growth of absolute expansion ratio slows down in the subsequent cycles. The absolute shrinkage ratio and relative shrinkage ratio are decreasing in the wetting-drying cyclic process.
机译：通过实验室试验分析了干湿路径中原状裂隙红土的胀缩变形。监测了四个湿干循环中样品的胀缩变形，总结了其收缩率和膨胀率。结果表明，富集红壤的裂隙土壤在干湿过程中表现出一些特殊的特征。第一润湿路径后的膨胀明显大于第一干燥路径后的收缩。在随后的每个干湿循环中，膨胀率都略大于收缩率。在湿-干循环过程中，试样的高度逐渐增加，最终的膨胀高度呈现出稳定的趋势。润湿干燥循环时间的增加与绝对膨胀率的增加相关，并且绝对膨胀率的增长速率在随后的循环中减慢。在干湿循环过程中，绝对收缩率和相对收缩率减小。

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