A study of the water retention curve of lime-treated London Clay

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• 作者：Xiwei Zhang ; Maria Mavroulidou ; Michael J. Gunn
• 关键词：Hysteresis ; Lime stabilisation ; Partially saturated soil ; Soil water retention curve ; Volume change
• 刊名：Acta Geotechnica
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：12
• 期：1
• 页码：23-45
• 全文大小：3997KB
• 刊物类别：Engineering
• 刊物主题：Geoengineering, Foundations, Hydraulics; Continuum Mechanics and Mechanics of Materials; Geotechnical Engineering & Applied Earth Sciences; Soil Science & Conservation; Soft and Granular Matter, Compl
• 出版者：Springer Berlin Heidelberg
• ISSN：1861-1133
• 卷排序：12

文摘

This paper investigates the drying and wetting soil water retention curves (SWRCs) of statically compacted lime-stabilised London Clay specimens. A series of tests were performed using the contact filter paper method, pressure plate apparatus and a suction-controlled triaxial system incorporating the axis translation technique. These investigated the water retention of the soil under different boundary and stress-state conditions and simultaneously determined the volume change in the soil during drying and wetting. Factors relevant to the lime treatment of soils, such as curing period and method (air vs. water curing), were also considered. Finally, the hysteresis of the SWRC of the chemically treated soil (for which there appears to be a lack of information in the international literature) was investigated. The results showed that the treatment with lime increased the volumetric stability but reduced the water retention ability due to a more open structure enabled by the flocculation and chemical bonding effects. Curing period and method effect appears to be small. Hysteresis was noted to some degree in all instances.