EcoSmart Concrete Project a concrete contribution to the environment Context a CCAF-TEAM funded project Innovation
Michel de Spot, P.Eng EcoSmart Partnership
Globe 2002 - Technical Session Case Studies Exploration March 14, 2002
Concrete
Innovation Context Typical concrete mix
% by weight Cement 12% Cement production Sand 34% accounts for more than Aggregates 48% 90% of the energy used to make concrete Water 6%
Case Studies Exploration
The Cement Kiln The CO2 Numbers (approximate)
1 tonne cement = 1 tonne CO2
Cement Plant emissions in GVRD : 2 Million t
CO2 Total GVRD: 16 Million t Cement making: 12.5% of GVRD
Cement plant in the World: 1.5 Billion t
CO2 Total World: 20 Billion t Cement making: 8% of world total
1 A Concrete Example The Trend
World +39% CO2 embodied in Asia a high-rise concrete building: 6,000 t +39%
Africa-M-East-Oceania One car 4000 Km = 1 t +23% Production 1995 Mt/a Central South America Equivalent to 24,000,000 Km or Increase 1995-2010 Mt +57% each condo owner lifetime driving. North America +2%
Pacific North West Forest Sink : 840 t / ha Russian Federation +95% 7 ha of forest Europe ( 50 years) +21%
0 500
The Proposed Solution The Promises The Challenge
To minimize the GHG signature of concrete Higher strength Slower early strength by maximizing the replacement of Portland cement Lower cost in the concrete mix with SCM (*) Longer life span while maintaining cost, performance, and Better finish constructability
* Supplementary Cementing Material such as fly ash
Higher Strength Lower Cost 60
Flyash is a by-product 50 of coal-fired power plant
40 Production worldwide Canada: 4,000,000 t Flyash Reference 30 US : 60,000,000 t World : 600,000,000 t
20 average use : 10% cost at the plant : 1/10 price of cement cost delivered : 1/2 price of cement 10
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2 Longer LifeSpan Better Finish
“Concrete is the marble of our time. EcoSmart concrete has the greatest potential for finish and colour.”
Arthur Erickson, architect
The Federal Support
Context Innovation CCAF TEAM Climate Change Action Fund Technology Early Action Measures
Case Studies Exploration
The Issues & Concerns
Strength Context Durability Innovation Environmental Impact Cost & availability Health Liability Colour Setting Time Others Case Studies Exploration
3 The results Liu Centre
9 Case studies Architect: • Liu Centre Architectura • BC Gas Building Arthur Erickson • Brentwood station • York University Engineer: • Ardencraig Bush, Bohlman & Partners Keen Engineering • Cranberry commons Levelton Engineering • Artist Work-Live Studios • Merritt College Vancouver, BC • The BayView 50% fly ash
BC Gas Office Building Brentwood Skytrain Station Architect: Musson Cattell Mackey
Engineer: Architect: Levelton Engineering Busby + Associates Read Jones Christoffersen
Engineer: Fast & Epp Levelton Engineering
SkyTrain, Burnaby, BC 30% fly ash in pre-cast Vancouver, BC 40% fly ash
York University Computer Science York University (…)
Architect: Busby + Associates Architecture Alliance
Engineer: Yolles Partners Davroc
50% fly ash Toronto, Ontario 50% fly ash
4 Ardencraig Residential Renovation Cranberry Commons Townhouse
Architect: Allan Diamond Engineer: Jeff Allester
Architect: Birmingham & Wood
Engineer: Chui, Sandys, Wunsch Levelton Engineering
50% fly ash Vancouver, BC Vancouver, BC 50% fly ash
Nicola Valley Institute of Technology Nicola Valley (…)
Architect: Busby + Associates
Engineer: AMEC Equilibrium
Merritt, BC 50% fly ash
50% fly ash
Artist Live-Work Studio Bayview High Rise Building Architect: Busby + Associates Engineer: Read Jones Christoffersen Architect: Arthur Erickson Nick Milkovich
Engineer: AMEC Fast & Epp
Vancouver, BC 50% fly ash 30 - 40% fly ash Vancouver, BC
5 New Technology Developments Pre Cast
Pre-cast Intergrind
Intergrind Survey Results
Issues Partial Non-issue
Setting Time Strength Aspect Workability Composition Short-term availability Economics Compatibility GHG Reduction Long-term availability Collateral Benefits Perception
The Dial Innovation Phase
SCM Innovation Context Design Construction
Case Studies Exploration
6 Fly Ash Metakaolin
Origin: Coal-fired Power Plant Origin: Oil Sands Extraction Issues: Enough? How good? How green? How much? Issues: How green? How much?
GSCem Natural Pozzolan
Origin: Cominco Trail Smelter Origin: Volcanic Ashes Issues: Good? Green? Economical? Issues: Enough? How good? How green? How much?
Design Construction
Early Design Schedule Practice
7 Thank You
Visit us at www.ecosmart.ca
Michel de Spot P.Eng. 1 604 436 6855 [email protected]
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