FAQs

Yes, coal ash from ponds or landfills is harvested and transformed into a consistent, low LOI, Class F fly ash for encapsulated beneficial use. Removing coal ash permanently from ground storage and recycling it for beneficial use in concrete is an environmentally responsible solution for people and the environment.

STAR Refined Pozzolan can be used in more concrete mixes and at higher dosage rates. STAR Refined Pozzolan will not affect the ability of your air-entraining agent to build and maintain an air void system in concrete.

The only sure way to know how any admixtures, chemical or mineral, behave together is to test them. Independent testing shows that concrete made with STAR Refined Pozzolan has essentially the same air dosage rates as plain Portland mixes.

Class F fly ash, like STAR Refined Pozzolan, is one of the best strategies to defend against deterioration due to Alkali-Silica Reactivity (ASR). Reactive fly ash also reduces permeability, which delays the onset of reinforcing steel corrosion.

STAR Refined Pozzolan can be used in slag cement to mitigate ASR resistance, reduce segregation and improve sulfate resistance.

STAR Refined Pozzolan contributes to the overall quality and performance of concrete with increased ultimate strength, greater durability, and reduced bleeding and drying shrinkage, improved workability and finishability. STAR Refined Pozzolan is a manufactured product that surpasses the quality and consistency of byproduct fly ash.