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By-Product Reductions
The Concrete Joint Sustainability Initiative is a multi-association
effort of the Concrete Industry
supply chain to take unified and integrated action for
Sustainable Development
Concrete JSI members have signed a joint agreement
committing to act on 9 Declarations.
Declaration #4 addresses 8 Social Values of Concrete Structures
http://www.sustainableconcrete.org
Declaration #4:
“Our integrated thinking will focus on the following
Social Values provided by Concrete Structures”:
1. Resource efficiency 5. By-product reduction
2. Safety/protection 6. Aesthetics
3. Financial responsibility 7. Societal connectivity
4. Operational continuity 8. Longevity/durability
This presentation discusses Social Value #6:
By-Product Reductions
By-product ReductionsWhat it Means
Reduce RecycleReuse
By-product Reductions
Benefits•Virgin material savings•Embodied energy reduction•Emission reductions•Performance enhancement•Reduction of land-filled waste•Cost reductions
Big Industry Footprint
After water, concrete is most widely used
material in the world
2x more than plastic, steel, aluminum, and
wood, combined
CO2 from cement mfg:
U.S. < 1.5%
How Big Are We?
U.S. EPA, “Quantifying Greenhouse Gas Emissions from Key Industrial Sectors in the United States, 2008 report
For More Information
http://www.epa.gov/sectors/performance.html
http://www.epa.gov/sectors/pdf/greenhouse-report.pdf
Cement Manufacturing
Photo Courtesy of Titan America, LLC
Combustion& Grinding
35 – 40%
Calcining60 - 65%
Where does the CO2 come from?
Manufacturing Improvement
Energy Savings
2.3 million homes / year
Manufacturing Improvements
Alternative Materials
45% of plants
Manufacturing Improvements
Alternate Fuel Usage
65% of plants
Alternate Fuels
58 million
U.S. Cement Manufacturing Improvement Goals
By 2020*• Reduce carbon dioxide - 10%• Reduce energy use – 20%• Reduce cement kiln dust – 60%• Implement EMS at plants - 75%(* from a 1990 benchmark for a unit of production)
www.cement.org/smreport08
U.S. Ready Mixed Concrete Production Goals
•By 2020•Embodied energy: 20% reduction•Carbon footprint: 20% reduction•Potable water: 10% reduction•Waste: 30% reduction•Recycled content: 200% increase
MaterialReuse and Recycling
Supplemental Cementitious Materials
23 million metric tons diverted in 2007
Recycled Concrete
125 - 140 million Tons / year
Stapleton Airport DeconstructionPhoto courtesy of Recycled Materials Corp.
Reinforcing Steel
97% recycled
and 100%
recyclable
97%
Adaptive Reuse
199 S. Fifth Street Condominiums, Columbus, Ohio
Meyers + Associates ArchitectureImages courtesy of Meyers + Associates and ESTO Photography
New Developments
Wind turbines at California Portland Cement
New cement formulations
Alternative energy research
“Smog eating” concrete
Why it’s important to next Generations
• Extends the use of finite material resources, energy, and land
• Reduces emissions and landfill waste• Supports all 3 aspects of the Triple Bottom
Line
Thank You
American Coal Ash Association American Concrete Institute American Concrete Pipe Association American Shotcrete Association American Society of Concrete Contractors Architectural Precast Association American Segmental Bridge Institute Cast Stone Institute Concrete Reinforcing Steel Institute Concrete Sawing & Drilling Association Concrete Foundations Association Expanded Shale, Clay and Slate Institute
Interlocking Concrete Pavement Institute International Concrete Repair Institute National Concrete Masonry Association National Precast Concrete Association National Ready Mixed Concrete Association Portland Cement Association Post-Tensioning Institute Precast/Prestressed Concrete Institute RMC Research and Education Foundation Silica Fume Association Slag Cement Association Tile Roofing Institute Tilt-Up Concrete Association Wire Reinforcement Institute