SYMPOSIA PAPER Published: 01 January 1988
STP29095S

Compression and Shear Deformation of Soil Under Wide-Ranging Confining Pressure

Source

The conventional triaxial drained compression test was conducted on specimens under wide-ranging confining pressure, 9.8 to 9.8 × 103 kN/m2 (0.1 to 100 kgf/cm2). Three kinds of soil were used for the test: clayey soil, Toyoura sand, and soft sedimentary rock (“Shirasu,” derived from pyroclastic flows in the southern part of Kyushu Island in Japan). Confining pressure higher than 9.8 × 102 kN/m2 (10 kgf/cm2) was generated by a nitrogen gas cylinder; confining pressure lower than 9.8 × 102 kN/m2 (10 kgf/cm2) was supplied by a common air compressor. The compression curves (the e-log p relation) under wide-ranging pressure are shown for three kinds of soil. Stress-strain relations and stress-dilatancy relations in the shear deformation process are also shown. It is concluded that the mechanical behaviors of clayey soil and sandy soil are similar under wide-ranging confining pressure although these materials are often treated as different.

Author Information

Kitamura, R
Kagoshima University, Kagoshima, Japan
Haruyama, M
Kagoshima University, Kagoshima, Japan
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Details
Developed by Committee: D18
Pages: 501–511
DOI: 10.1520/STP29095S
ISBN-EB: 978-0-8031-5048-5
ISBN-13: 978-0-8031-0983-4