ABSTRACT

The testing of unsaturated soils requires greater care and effort than that of saturated soils. Although unsaturated soil mechanics has been embraced by geotechnical engineering, engineering practice has not yet caught up as the characterization of unsaturated soils is difficult and time-consuming, and made harder still by a lack of standards.

Laboratory Tests for Unsaturated Soils collates test procedures to cover all laboratory tests for characterising unsaturated soils. It covers the background, theory, test procedures, and interpretation of test results. Each test procedure is broken down into simple stages and described in detail. The pitfalls of each test and the interpretation of the test results are explained. Test data and calculation methods are given, along with many numerical examples to illustrate the methods of interpretation and to offer the presentation of typical results.

The book is especially useful for students and researchers who are new to the field and provides a practical handbook for engineering applications.

chapter Chapter 1|9 pages

Introduction

chapter Chapter 3|16 pages

Sampling, storage and sample preparation

chapter Chapter 4|29 pages

Grain-size distribution, and specific gravity

chapter Chapter 5|24 pages

Atterberg limits and shrinkage test

chapter Chapter 6|13 pages

Compaction

chapter Chapter 7|10 pages

Suction measurement

chapter Chapter 8|18 pages

Matric suction measurement

Direct methods

chapter Chapter 9|25 pages

Indirect suction measurement methods

chapter Chapter 10|33 pages

Soil-water characteristic curve

chapter Chapter 11|12 pages

Permeability

Steady-state methods

chapter Chapter 12|22 pages

Permeability

Transient-state methods

chapter Chapter 13|34 pages

Oedometer test

chapter Chapter 14|18 pages

Constant rate of strain test

chapter Chapter 15|20 pages

Triaxial test (volume change)

chapter Chapter 16|16 pages

Direct shear test

chapter Chapter 17|24 pages

Triaxial test (shear strength)

chapter Chapter 18|11 pages

Ring shear test

chapter Chapter 19|15 pages

Tension test

chapter Chapter 20|20 pages

Wave velocities

chapter Chapter 21|10 pages

Thermal conductivity