Experiment Study on Determination of Surface Area of Finegrained Soils by Mercury Intrusion Porosimetry

1st International Global on Renewable Energy and Development

Yan, X.Q.^1,2 ; Zhou, C.Y.^1 ; Fang, Y.G.^3 ; Lin, L.S.^2

School of Engineering, Sun Yat-sen University, Guangzhou, GUANGDONG

510275, China^1

Bureau of Public Works of Longgang Shenzhen Municipulity, Shenzhen, GUANGDONG

518172, China^2

South China University of Technology, Guangzhou, GUANGDONG

510641, China^3

关键词: Average values;    Experiment study;    Fine grained;    Fine grained soil;    Mercury intrusion porosimetry;    Physical and chemical properties;    Specific surface area (SSA);    Surface area;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/100/1/012003/pdf
DOI  :  10.1088/1755-1315/100/1/012003

来源: IOP

【 摘 要 】

The specific surface area (SSA) has a great influence on the physical and chemical properties of fine-grained soils. Determination of specific surface area is an important content for fine-grained soils micro-meso analysis and characteristic research. In this paper, mercury intrusion porosimetry (MIP) was adopted to determine the SSA of fine-grained soils including quartz, kaolinite, bentonite and natural Shenzhen soft clay. The test results show that the average values of SSA obtained by MIP are 0.78m2/g, 11.31m2/g, 57.28m2/g and 27.15m2/g respectively for very fine-grained quartz, kaolin, bentonite and natural Shenzhen soft clay, and that it is feasible to apply MIP to obtain the SSA of fine-grained soils through statistical analysis of 97 samples. Through discussion, it is necessary to consider the state of fine-grained soils such as pore ratio when the SSA of fine-grained soils is determined by MIP.