Pressure-controlled cavity expansion in clay

Cavity Expansion Methods in Geomechanics

Undrained Plane-strain Expansion of a Cylindrical Cavity in Clay: a Simple Interpretation of the Pressuremeter Test

A study is made of the problem of interpreting the results of Menard pressuremeter tests on soil in situ. In the test a cylindrical cavity is expanded by internal pressure, and the relation between applied pressure and cavity vulume change is measured. It is shown that the results of a single test are enough to determine a complete stress-strain relation in plane strain, and a simple graphical ...

Spherical Cavity Expansion in Material with Densification

LLE Review, Volume 85 15 Introduction Fused silica (SiO2) exhibits some unique features when it is ground or polished. It also densifies permanently under large compressive stresses at room temperature;1–3 up to 15% permanent densification has been observed.2,3 The experimental data for densification from different works, however, are obviously inconsistent,4 which may result from different lev...

Moisture expansion and mass gain in fired clay ceramics

We report the first measurements of mass gain and expansive strain in clay ceramics immediately following firing. The results show that both mass gain and expansive strain follow a well defined two-stage process, each stage of which is linear with (time)1/4, with a transition from the first to the second stage commencing at t ∼ 1.5 h. The first stage mass gain and strain rates are ∼3.5 times gr...

High pressure thermal expansion

Introduction Conclusions References