Extended wet sieving method for determination of complete particle size distribution of general soils  

作　　者：Shengnan Ma Yi Song Jiawei Liu Xingyu Kang Zhongqi Quentin Yue 

机构地区：[1]Department of Civil Engineering,The University of Hong Kong,Hong Kong,China

出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》2024年第1期242-257,共16页岩石力学与岩土工程学报（英文版）

基　　金：The work described in this paper was partially supported by grants from the Research Grant Council of the Hong Kong Special Administrative Region,China(Project Nos.HKU 17207518 and R5037-18).

摘　　要：The traditional standard wet sieving method uses steel sieves with aperture?0.063 mm and can only determine the particle size distribution(PSD)of gravel and sand in general soil.This paper extends the traditional method and presents an extended wet sieving method.The extended method uses both the steel sieves and the nylon filter cloth sieves.The apertures of the cloth sieves are smaller than 0.063 mm and equal 0.048 mm,0.038 mm,0.014 mm,0.012 mm,0.0063 mm,0.004 mm,0.003 mm,0.002 mm,and 0.001 mm,respectively.The extended method uses five steps to separate the general soil into many material sub-groups of gravel,sand,silt and clay with known particle size ranges.The complete PSD of the general soil is then calculated from the dry masses of the individual material sub-groups.The extended method is demonstrated with a general soil of completely decomposed granite(CDG)in Hong Kong,China.The silt and clay materials with different particle size ranges are further examined,checked and verified using stereomicroscopic observation,physical and chemical property tests.The results further confirm the correctness of the extended wet sieving method.

关 键 词：Particle size distribution(PSD) General soil SILT CLAY Wet sieving Physical and chemical properties 

分 类 号：TU43[建筑科学—岩土工程]