Development of Data Acquisition System for Consolidated Undrained Triaxial Test

Soft Soil Engineering International Conference 2015

Lee, L.M.^1,2 ; Yasuo, T.^1 ; Wei, L.C.^1 ; Yuan, L.C.^1

Universiti Tunku Abdul Rahman, Lee Kong Chian Faculty of Engineering and Science, Selangor, Kajang

43000, Malaysia^1

Faculty of Civil Engineering, Universiti Teknologi Malaysia, Skudai, Johor

81310, Malaysia^2

关键词: Consolidated undrained;    Consolidated-undrained triaxial test;    Data acquisition system;    double vacuuming;    Effective stress;    Laboratory test;    Residual soil;    Shear strength parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/136/1/012019/pdf
DOI  :  10.1088/1757-899X/136/1/012019

来源: IOP

【 摘 要 】

Consolidated Undrained (CU) triaxial test is a common laboratory test used in practice for determining effective and total shear strength parameters of soil. This paper reported works carried out to develop a data acquisition system for a self-assembled triaxial machine. The developed system was capable of acquiring signals from the installed sensors (i.e. pressure transducer, load cell, LVDT), interpreting and presenting the data in real-time graphs. In addition, the study highlighted the advantages of performing double vacuuming method to saturate the soil specimen. The saturation can be obtained quicker and at a significantly lower cell pressure compared to the conventional stepwise increment of back pressure and cell pressure method.