Problem Soils in South Africa 3-4 November 2008 ESCOM Conference Centre, Midrand, Gauteng

Table Of Contents

Programme
Monday 3 November 2008
Opening Session
Chairman: Gerhard Heymann
Welcome-chairman of committee
Tebogo Modishane
23 Years On! Linking the old with the new
Gary Jones 3
Introduction of Keynote Speaker
Phil Paige-Green
Keynote Address: "Anticipating problem soils
on linear projects"
Fred Baynes 9
President of the International Association for
Engineering Geology and the Environment
DAY ONE: GENERAL PROBLEM SOILS
SESSION ONE - IDENTIFICATION AND COLLAPSE
Chairman: Gerhard Heymann
The preliminary identification of problem soils
for infrastructure projects
Phil Paige-Green & D Turner 25
The use of index laboratory testing to estimate
engineering behaviour
Louis van Rooy & MA Dippenaar 35
Internally-jacked pile tests as part of site
investigation in problem soils
Irvin Luker 41
Collapsible soil - an overview
Eben Rust, G Heymann and G Jones 47
Discussion
SESSION TWO - DISPERSIVE AND EROSION
Chairman: Tebogo Modishane
Dispersive and Erodible Soils
Phil Paige-Green
A classification of problem soils for the
rehabilitation of erosion
Heinz Beckedahl and Gilli 67
Problem soils and the rehabilitation of erosion
Heinz Beckedahl and Gilli 75
Geotextile filter design in problem soils
Garth James
Innovative use of hard and soft solutions to
rehabilitate a 14km long gully
Rikesh Maharaj & A Gilli 95
SESSION THREE - CLAYS
Chairman: Tebogo Modishane
A universal method for assessing the intrinsic
expansive of soils
Deneys Schreiner and K Habte 105
The response of expansive soils to changes in
both moisture content and applied load under
different degrees of confinement
Terry Pidgeon
Premature distress of a pavement on expansive
black cotton soil in the Horn of Africa
Martin Mgangira & P Paige-Green 123
Delaid stability failure of dam on soft clay
Gary Jones, AC White & A Meintjes 131
Finding engineering use for the
environmentally hazardous Spoils
of Chicoco mud in the Niger delta
Olujide Omotosho 141
Discussion
TUESDAY 4 NOVEMBER 2008-DOLOMITES
SESSION FOUR - DOLOMITES
Chairman: Phil Paige-Green
Mandate and powers of the Council for
Geoscience in respect of development
on dolomite having regard to applicable
legislation
Greg Heath, N Trollip & K Venter 163
A performance based approach to the
development of dolomite land
Ron Watermeyer, D.B Buttrick
N Trollip, AA Gerber & N Pieters 167
A preliminary overview of the sinkhole record
of South Africa
Greg Heath & AA Oosthuizen 175
Vulnerability and risk in Karst terrains
Louis van Rooy and KT Witthuser 181
An holistic approach to geological information
interpretation and representation to optimize
and aid engineering geological zonation on
dolomitic hazardous land
Pieter Bosch 189
A study of available information on stability
events in a selected area (Lyttelton Agricultural
Holdings) to illustrate the development
of a system for determining acceptable
development risk for domestic and other
types of development
Kobus Venter 203
Groundwater levels and dolomites - nuisance
or necessary
Phil Hobbs 213
Sinkholes in the Bapsfontein dolomite water
compartment caused by dewatering
Fritz Wagener 225
SESSION FIVE - DOLOMITES (CONT)
Chairman: Eben Rust
Papers to be announced
General Discussion & Closure