This is the key note talk given at the Green Concrete Performance Workshop at NIST on July 20th, 2012.

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?