Unsaturated materials comprise residua, collapsible and expansive naturally occurring soils, compacted soils and, more recently, residues of solid wastes. The engineering problems associated with unsaturated materials range from those related to conventional geotechnical works (e.g. foundations, pavements, slopes and excavations, retaining structures, earthdams, irrigation canals, tunnelling, compacted embankments) to those included in the environmental area (e.g. natural slope instability, erosion and subsidence processes, tailings, residues or solid waste disposal, contaminant transport, remediation of contaminant sites, engineered barriers for environmental protection, re-use of residues).
This book, published in three separate volumes, comprises a selection of selected and invited papers presented at the Third International Conference on Unsaturated Soils – UNSAT ‘2002 – that took place in Recife, Brazil, form 10th to 13th March 2002.
The book is of interest to consultants, researchers, practitioners, lecturers and students with a background in geotechnical engineering, environmental engineering and engineering geology.
Table of Contents
1. Developments on Theoretical, Modelling and Numerical Analysis on Unsaturated Materials 1.1 Keynote lecture Use of soil-water characteristic curves in the implementation of unsaturated soil mechanics 1.2 Panel papers Elastoplastic models for unsaturated soils with two suction effects and unsaturated soil behavior Small strain behaviour of soils in controlled suction conditions 917 1.3 Late papers A new simple analytical solution for estimating groundwater rise in a soil slope due to sewer or drain leakage Evaluation report on Parallel Session 1.1: developments on theoretical, modelling and numerical analysis on unsaturated materials Evaluation report on Parallel Session 1.2: developments on theoretical, modelling and numerical analysis on unsaturated materials 2. Experimental Unsaturated Soil Mechanics 2.1 Keynote lecture Swelling and degradation of argillaceous rocks 2.2 State-of the-art report Experimental unsaturated soil mechanics 2.3 Panel papers The critical state in unsaturated soils Direct measurement of soil water tension 2.4 Late papers Development of an automatic tensiometer in laboratory using a mini-lysimeter Development of a diffusimeter for diffusion coefficient measurements in unsaturated soils A study of some factors influencing the soil-water retention curve 2.5 Evaluation reports Suction and storage characteristics of unsaturated soils Evaluation report on Parallel Session 2.2: experimental unsaturated soil mechanics Session 2.3: experimental unsaturated soil mechanics - general report Experimental unsaturated soil mechanics (swelling, collapsible and compacted soils) Summary of discussions on experimental unsaturated soil mechanics at Parallel Session 2.4 3. Applied Unsaturated Soil Mechanics 3.1 Keynote lecture Water balances for soil systems 3.2 State-of the-art report Applied unsaturated soil mechanics 3.3 Panel papers Experimental determination of hydraulic characteristics for unsaturated soils, Investigating the water retention in iron ore Simplified approach to the behavior of compacted soils on drying and wetting paths 3.4 Late papers CBR, undrained strength and yielding characteristics of compacted tills 3.5 Evaluation reports Report of Parallel Session 3.1: applied unsaturated soil mechanics Evaluation report on Session 3.2 - applied unsaturated soil mechanics Report on Session PL 3.3: applied unsaturated soil mechanics 4. General Information on UNSAT 2002 4.1 Technical organization and statistics Technical organization and statistics related to the UNSAT 2002 4.2 Photographic documentation
J.F.T. Juca Universidade Federal de Pernambuco, Brazil. Tacio M.P. de Campos Pontiflcia Universidade Catolica do Rio de Janeiro, Brazil. Fernando A.M. Marinho Escola Politecnica da Universidade de Sao Paulo, Brazil