1. Kim Jenkins SANRAL Chair in Pavement Eng
TRB
INTERNATIONAL ACTIVITIES COMMITTEE
South African Activities
- Highlights for 2007
Kim Jenkins SANRAL Chair in Pavement Eng
University of Stellenbosch, South Africa

2. TRH 3 (2007) Scope of the document Background to sealwork
TRB Workshop The South African National Roads Agency Limited
Progress Report – Preparations for Transport Month – October 2006
Scope of the document
Background to sealwork
Investigation & seal type selection
Pre-treatment
Design
Conventional and modified binder
Sand seals, Single & Double seals,
Slurry and Cape seals
Fogspray and rejuvenators
Geotextile seals
Graded aggregate seals
Construction and quality control guidelines
Labour intensive sealing
Maintenance
double seal
#226716

3. Ultra Thin Continuously Reinforced Concrete Pavement (UTCRCP)
TRB Workshop The South African National Roads Agency Limited
Progress Report – Preparations for Transport Month – October 2006
Ultra Thin Continuously Reinforced Concrete Pavement (UTCRCP)
120 to 140 MPa. 4,5% steel from 6mm weldmess rather than 0,6%, 40mm thick layer
#226716

4. Ultrathin continuously reinforced concrete pavement (UTCRCP)
cncPave being updated to include UTCRCP
- 2007

5. ME-design model Provides opportunity for design refinement
Project specific input combined with design expertise
Utilisation of available road-building material

6. Current and Future APT Focus areas
Vehicle-pavement interaction – SIM TM

7. Structural Design of CIPR with Cold Mix
TRB Workshop The South African National Roads Agency Limited
Progress Report – Preparations for Transport Month – October 2006
Materials Classification
Capacity Assessment
Specifications
CBR 7-15%
200 mm BSM 1
130 mm C4
> 200 mm G6
LAB
DCP
Visuals
Test Pits
FWD
Mix Design
Shear Strength
Durability
Flexibility
The design process basically consists of three elements:
Materials classification using multiple, routine sources of information
Capacity assessment, and
Mix design for the bituminous stabilized component of the pavement
So first let’s take a brief look at the Materials Classification methodology…
Adopt aspects of Certainty Theory
#226716

8. TRB Workshop The South African National Roads Agency Limited
Progress Report – Preparations for Transport Month – October 2006
THANK YOU
#226716