fundamentals of geotechnical engineering and laboratory ...mucc.mahidol.ac.th/~pongpipat.ana/2015...
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Fundamentals of Geotechnical Engineering and
Laboratory Data Analysis
21-25 December 2015
Department of Civil and Environmental Engineering
Faculty of Engineering, Mahidol University
Dr. Pongpipat Anantanasakul
Plasticity and Structure of Soil
Plastic limit (PL)
PL is determined as the water content of soil at which it starts to crumble
When rolled into a 1/3” thread.
Fabrics of granular soils
AType equation here.
• The behavior of
a granular soil is
not controlled
by the void ratio
alone.
• The fabric also
influences the
stress-strain
behavior.
𝐷𝑟 =𝑒𝑚𝑎𝑥 − 𝑒
𝑒𝑚𝑎𝑥 − 𝑒𝑚𝑖𝑛× 100%