How do we expand the use of cement replacement materials?
Ryan HenkensiefkenU.S. Concrete
The “Old Way”
Economic Growth GDP Construction Focused Groups
Design
Bid
Build
Owner
Designer
Builder
Supplier
Contrac
t
Contrac
t
Contrac
t
Contract = Barrier
GDP
$
$
$
The “New Way”
Current Growth GDP
Owner/CMSustainability
vs.Future Growth Construction Integrative
DesignDesign/Build Contract
Builder Designer
Supplier
1. Natural Resources2. Skilled Workforce3. Healthy Workforce
Owner
Designer
Builder
Supplier
Builder Designer
Supplier
The Parties Involved
1. Educator2. Researcher3. Designer4. Builder5. Supplier/RMP
Points of Influence
University(skills)
Educator
Researcher
Designer
Builder
Supplier
Architect
Engineer
Design & Development
Construction
Performance1. Cost & Design Life2. Natural Resources3. Health
Supplier/RMP
CM
Parties Involved1. Educator2. Researcher3. Designer4. Builder5. Supplier/RMP
Effective Communication is the Key
Owner
Designer
Builder
Supplier
Builder Designer
Supplier
Supplier/RMP
*Concrete Technology is more advanced than Industry
Bridge the Gap
Data Availability
Reliability
MethodologyStandards• ASTM• ACI• Product Category Rules• Environmental Product Declaration
Scale• 3pt Curve
Social• What’s important to us
What’s Important to Us?
Energy Use over a Design Life
Carbon
Water Use
Conserving Virgin Materials
Scale
35 Mixes Per Curvex
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
Researcher
Reliable Performance Test Methods
Do we have good durability measurements?
ASR (11 Different Tests)
Rapid Chloride Permeability
Researcher
Need to have a common method for measuring…
Sustainability
Researcher
Needs of Today1. Ternary mixes with slag and fly ash can easily
replace 50% of cement2. Where slag is not available, we need something
to get the last 25% or the whole 50%3. Fully optimize current technologies4. Need to develop long term durability
measurements5. Need to be thinking about needs of the future
How do we expand the use of cement replacement materials?
Questions
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