Prediction of loess soil-water characteristic curve by mercury intrusion porosimetry

作者: Hua Li , Tong-lu Li , Ping Li , Ya-guo Zhang

DOI: 10.1007/S11629-019-5929-2

关键词: SuctionRange (statistics)Soil scienceSoil waterMaterials scienceContact angleConsistency (statistics)Mercury intrusion porosimetryWettingLoess

摘要: Mercury intrusion porosimetry (MIP) is a simple and fast way to obtain the pore distribution of soil can be used estimate soil-water characteristic curve (SWCC). In previous studies, was assumed perfect wettability material, contact angle (CA) interface taken as zero in SWCC prediction method. However, CA has proved much greater than even for hydrophilic soils according some experiments, it significant effect on predicting SWCC. this research, method by MIP, which takes fitting coefficient, proposed. The size curves are measured SWCCs two loess pressure plate filter paper tests. When 70° 50° wetting drying process, respectively, predicted agree well with SWCCs. suction range proposed 0–105 kPa. consistency results suggests that utilizing MIP test predict proper effective loess.

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