We Energies Coal Combustion Products ... - The White House

The following observations were made by the contractor during the
construction.
• Air entrainment and slump were more difficult to control for the offspec
ASTM C618 Class F fly ash concrete than ASTM C618 Class C
fly ash concrete.
• ASTM C618 Class F fly ash concrete was more “sticky” and took a
longer time to reach strength at which saw cuts could be made.
• Twenty percent and 50% Class C fly ash concrete showed two shades
of tan, earth-tone colors, and 40% Class F concrete had a medium gray
slate-tone color when wet.
Off-spec ASTM C618 Class F fly ash obtained from Oak Creek Power Plant
and ASTM C618 Class C fly ash obtained from Pleasant Prairie Power Plant
were used on this project. ASTM C150, Type I Portland cement was also
used. The mixture proportions are shown on Tables 4-26 to 4-27.
Concrete specimens were also made for the following tests:
1. Compressive strength
2. Splitting tensile strength
3. Flexural strength
4. Freezing and thawing resistance
5. Drying shrinkage
6. Deicing salt scaling resistance
7. Chloride ion permeability
8. Abrasion resistance
We Energies 94
Coal Combustion Products
Utilization Handbook