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