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Fly Ash Sales

Technical Service and Solutions For the Construction Industry

Trusted Service

SEFA Fly Ash Sales has been serving customers for more than four decades and now serves over 800 concrete plants in 13 states. Since 1976, SEFA has developed technical expertise in the functional performance of fly ash in virtually every situation, evaluating the best mixtures for particular applications and for differing weather conditions. Our ACI certified team provides technical expertise to help customers achieve an optimal concrete mix for specific applications and weather conditions.


STAR Fly Ash is a high-quality, specification-grade fly ash for use as a supplementary cementitious material in concrete and concrete products. Coal ash from ponds or landfills is transformed into a consistent, low LOI, Class F fly ash for encapsulated beneficial use. Reclaiming coal ash from ponds provides year-round availability of this post-industrial, recycled material for the construction industry.

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Benefits of Fly Ash

  • Increased Ultimate Strength
  • Greater Durability
  • Improved Workability
  • Mitigation of Alkali-Silica Reactivity (ASR)
  • Enhanced Sulfate Resistance
  • Reduced Segregation
  • Reduced Bleeding
  • Improved Pumpability
  • Improved Watertightness
  • Reduced Heat of Hydration

Technical Expertise

Our Regional Managers provide technical expertise to concrete producers. Tailored, quality control programs are based on a selective collection of the most consistent quality material for customers.

Meet the Team

What Is Fly Ash?

Fly ash is classified as a Pozzolan: a mineral admixture and a supplementary cementitious material that provides concrete with performance benefits such as water tightness and long-term durability.

Volcanic ash, similar to today’s fly ash in its chemistry, was used as a supplementary cementitious material in concrete dating back to the Roman Empire. This natural Pozzolan was used in structures that have lasted for thousands of years.

Fly ash is used in:

  • Ready Mixed Concrete
  • Concrete Paving
  • Asphalt Paving
  • CLSM / Flowable Fill
  • Cellular Concrete
  • Precast Concrete
  • Prestressed Concrete
  • Block, Pipe, Vaults, etc.

The use of fly ash in concrete can contribute significant environmental, structural, and economic benefits. The EPA supports the beneficial use of fly ash in concrete, which improves the durability of concrete and prolongs the lifecycle of our roads, buildings, bridges, dams, and other important structures.

A building being constructed.
A large crane lifting a large piece of concrete.
A truck parked in a construction site.
A bridge over a road.
A group of men in yellow vests standing next to a road.
A large building under construction.
A city with tall buildings.
Cars on a bridge.
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Environmental Benefits

Removes Coal Ash
from the Environment

Reduces Use of
Limited Natural Resources

Lowers Greenhouse Gas
Emissions from Producing Cement

Structural Benefits

Improves Durability
of Infrastructure

Reduces the Effect
of Water on Concrete

Improves the Strength of
Concrete Roads, Bridges, and Buildings

Economic Benefits

Lowers Cost of
Impoundment Closures

Extends Replacement Timeline
for Concrete Infrastructure

Reduces Repair Costs with
Longer Lasting Roads and Bridges

ACAA logo.
ACIA logo.
Build with Strength logo.
National Ready Mixed Concrete Association logo.
Carolinas Ready Mixed Concrete Association logo.
GRMCA logo.
Kentucky Concrete Association.
Mississippi Concrete Association logo.
MRMCA logo.
PACA logo.
Tennessee Concrete Association.
VRMCA logo. Build Virginia strong.