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