Feedback on:
- 11th international symposium on
concrete roads, Seville, and
- 7th International DUT-workshop on
Design and performance of sustainabe
and durable concrete pavements,
Prepared for presentation at the 20th meeting of
the Roads Pavements Forum (RPF),
CSIR ICC, 10 November 2010
Erik Denneman
7th DUT workshop
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Slide 2
Carmona
33 participants (usual suspects),
Two days presentations and discussion
31 papers, two from SA
Session topics:
• Materials
• Design of concrete pavements
• Concrete pavement performance
• Innovative concrete pavement structures
© CSIR 2006
www.csir.co.za
7th DUT workshop, main themes:
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Modular pavements (rehabilitation and repair)
Buch et al 2010
Slide 3
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www.csir.co.za
7th DUT workshop, main themes:
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Modular pavements (continued)
Buch et al 2010
Slide 4
Tayabji et al 2010
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www.csir.co.za
7th DUT workshop, main themes:
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Innovative solutions
Perrie et al 2010
Slide 5
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www.csir.co.za
7th DUT workshop, main themes:
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Innovative solutions
Lechner, 2010
Slide 6
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www.csir.co.za
7th DUT workshop, main themes:
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Sustainability:
• Feedback on international conference on sustainable concrete
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Slide 7
pavements
Subbase design and the need for maintenance (Zollinger et al),
Silverbrand, three layer concrete pavement
© CSIR 2006
www.csir.co.za
7th DUT workshop, main themes:
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Fracture mechanics
• 5 papers on the need for and use of fracture mechanics in concrete
pavement design
Roesler et al, 2010
Thompson et al, 2010
Slide 8
© CSIR 2006
www.csir.co.za
7th DUT workshop, main themes:
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Size effect: 3 papers
20
TPB Experimental data
FPB Experimental data
σNu [MPa]
18
16
14
12
10
8
0
50
100
150
h-a [mm]
200
250
Denneman et al, 2010
Slide 9
© CSIR 2006
Khazanovich et al, 2010
www.csir.co.za
11th international symposium on concrete
roads, Seville
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Slide 10
108 papers, from 22 countries,
Three days of presentations
Excursions
Two papers from SA
One honorary membership
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www.csir.co.za
Honorary ISCP membership for Louis Marais
Slide 11
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SA Delegation
Slide 12
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www.csir.co.za
Conference themes
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Theme 1
Pavement design-planning evaluation
• Decision support systems
• Life cycle cost
• Evaluation techniques
• Long-life pavements
• Standards & specifications
Wathe, 2010
Slide 13
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www.csir.co.za
Conference themes
Scofield et al, 2010
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Slide 14
Theme 2
Sustainable construction
• Environmental-friendly pavements
• Low CO2
• Fuel consumption
• Recycling
• Heat island effect – Albedo
• Safety – skid resistance
Smits et al 2010
• Low noise
• Reduction hindrance to users
• Energy considerations
• Composite pavements
• Permeable pavements
• Climate change
• Pollution reductions
© CSIR 2006
www.csir.co.za
Conference themes
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Theme 3
Techniques for good maintenance, repair &
rehabilitation
• Fast-track, early opening
• (Ultra)(Thin) white topping (7 papers!)
• Overlays-inlays
• Precast slabs
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Slide 15
© CSIR 2006
www.csir.co.za
Conference themes
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Theme 3
Techniques for good maintenance, repair &
rehabilitation
• Fast-track, early opening
• (Ultra)(Thin) white topping (7 papers!)
• Overlays-inlays
• Precast slabs
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Schmidt et al 2010
Slide 16
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www.csir.co.za
Conference themes
Burger et al 2010
Slide 17
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Conference themes
Louw et al 2010
Slide 18
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Conference themes
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Theme 4
Alternative & special applications
• • Tunnel & bridge pavements
• Bus & tram
• Airports
• Industrial pavements
• Aesthetical concrete
• Concrete safety barriers
• Ports-harbours
• Cycle tracks
• New materials (Ultra high performance concrete (UHPC))
• Innovative pavements
• Treatment and recycling of materials
Larrard
et al 2010
•De• Soil
stabilization
Slide 19
© CSIR 2006
www.csir.co.za
Thank you