Fly Ash Sales & Operations

SPECS & AGENCIES

Specifications for Definition and Sampling of Fly Ash:

ASTM (American Society of Testing Materials)

  • C-618 Fly Ash…for use as Mineral Admixture in Concrete
  • C-311 Sampling and testing fly ash Specifications for fly ash use in ready-mixed concrete

ACI Standards (American Concrete Institute)

  • 211 Standard practice for selecting proportions for normal, heavyweight, and mass concrete
  • 212 Admixtures for Concrete
  • 301 Specification for structural concrete for buildings
  • 318 Building code requirements for reinforced concrete
  • 350 Concrete sanitary engineering structures

SEFA has source approval from the State Departments of Transportation in our territory.

Quality control assurance conducted by SEFA is monitored by the respective DOT’s on fly ash sources supplying your firm. The SEFA Group is heavily involved in the promotion of ready mixed concrete through our involvement in these associations:

National Ready Mixed Concrete Association

American Coal Ash Association

Alabama Concrete Industries Association

The Carolinas Ready Mixed Concrete Association

Georgia Ready Mixed Concrete Association

Kentucky Concrete Association

Maryland Ready Mix Concrete Association, Inc. 

Mississippi Concrete Industries Association

Pennsylvania Aggregates & Concrete Association

Tenneesee Concrete Association

Virginia Ready Mixed Concrete Association

Company Overview

Technology

At SEFA, we leverage technology in every aspect of our business to provide exceptional solutions to partners and customers, now and in the future. Like many of our innovations, new technologies were developed to solve complex issues in our industry. With increasing demand for high-quality fly ash, SEFA develops forecast models to evaluate the estimated future demand for material.

Service

The foundation of our Company is the willingness to serve. For over 40 years, SEFA has focused on providing a reliable supply of quality fly ash for the ready mix concrete industry. Throughout our history, we have also customized and added services that our utility or construction customers needed at the time. SEFA continues its strong heritage of integrity, excellence, safety, and unsurpassed service to its customers.

Environmental Stewards

SEFA processes and markets environmentally sustainable products derived from fly ash for the concrete industry, recycling over 20 million tons of fly ash in the last 30 years. We are an integral part of some of the country’s most successful coal ash recycling programs. SEFA is making a positive impact for the future by cleaning up coal ash from ponds and removing it from the environment permanently

STAR® Refined Pozzolan

Thermally Beneficiated Class F Fly Ash

STAR® Refined Pozzolan has applications ranging from ready-mix concrete to paving to precast products. It also promotes sustainable development by cutting down on the amount of new materials used in manufacturing. It’s recognized by the U.S. Green Building Council as a post-industrial, pre-consumer recycled material, which means it can contribute toward LEED credits. Those aren’t the only advantages of STAR® Refined Pozzolan. Its superior strength and air entraining characteristics allow its use in more concrete mixes and at higher dosage rates. It also improves workability and reduces permeability, which delays

Those aren’t the only advantages of STAR® Refined Pozzolan. Its superior strength and air entraining characteristics allow its use in more concrete mixes and at higher dosage rates. It also improves workability and reduces permeability, which delays the onset of reinforcing steel corrosion. STAR® Refined Pozzolan allows manufacturers to confidently tailor mixes precisely to meet weather, job, or specification requirements.

More Sustainable Infrastructure

Improved Strength, Durability, and Affordability of concrete projects is achieved with higher replacement ratios of STAR® Ash for Portland cement:

  1. The improved pumping capability of high ash concrete mixes means that material can be pumped higher and further, which reduces construction costs and results in higher quality end products.
  2. With higher ash usage ratios, the permeability of concrete is reduced which gives concrete structures protection against freeze/thaw deterioration and the penetration of chemicals and salts into the structures that cause corrosion and premature failure.
  3. These positive factors combine to offer engineers, architects, and owners a superior end product at a lower cost by using maximum ratios of consistently high-quality STAR® Ash.