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How Do We Expand the Use of Cement Replacement Materials
- 1. How do we expand the use of cement replacement materials? Ryan Henkensiefken U.S. Concrete
- 2. The “Old Way” Economic Growth GDP Construction Focused Groups Owner Design Contract $ Designer Bid Contract GDP $ Builder Build Contract $ Supplier Contract = Barrier
- 3. The “New Way” Current Growth GDP vs. Integrative Owner/ Future Growth Sustainability Construction Design CM 1. Natural Resources 2. Skilled Workforce Design/Build Contract 3. Healthy Workforce Owner Builder Designer Designer Builder Designer Builder Supplier Supplier Supplier
- 4. The Parties Involved 1. Educator 2. Researcher 3. Designer 4. Builder 5. Supplier/RMP
- 5. Parties Involved 1. Educator 2. 3. Researcher Designer Points of Influence 4. Builder Design & Development 5. Supplier/RMP Architect Designer Construction Engineer CM Builder Performance Educator 1. Cost & Design Life 2. Natural Resources Supplier 3. Health University (skills) Researcher Supplier/RMP
- 6. Effective Communication is the Key Owner Designer Builder Designer Builder Supplier Supplier
- 7. Supplier/RMP *Concrete Technology is more advanced than Industry Bridge the Gap Data Availability Reliability Scale • 3pt Curve Methodology Standards Social • ASTM • What’s important to us • ACI • Product Category Rules • Environmental Product Declaration
- 8. What’s Important to Us? Energy Use over a Design Life Carbon Water Use Conserving Virgin Materials
- 9. Scale 35 Mixes Per Curve x 4 Different Curves (100% Cement, 15% & 20% Ash, 50% SCM) x 11 Plants = 1,540 Mix Designs Since 1980 ~70,000 New Mix Designs ~2,300 New Mix Designs a Year
- 11. Researcher Reliable Performance Test Methods Do we have good durability measurements? ASR (11 Different Tests) Rapid Chloride Permeability
- 12. Researcher Need to have a common method for measuring… Sustainability
- 13. Researcher Needs of Today 1. Ternary mixes with slag and fly ash can easily replace 50% of cement 2. Where slag is not available, we need something to get the last 25% or the whole 50% 3. Fully optimize current technologies 4. Need to develop long term durability measurements 5. Need to be thinking about needs of the future
- 14. Questions How do we expand the use of cement replacement materials?