Title: Pyrrhotite in Concrete Aggregates

Author(s): Anthony F. Bentivegna, April Snyder, and Stephen M. Stacey

Publication: Concrete International

Volume: 45

Issue: 8

Appears on pages(s): 37-44

Keywords: mineral, sulfide, deterioration, reaction

DOI:

Date: 8/1/2023

Abstract:
Concrete aggregates produced in two regions in North America have been identified as the cause of deterioration to tens of thousands of residential and light commercial concrete foundations. The article provides an overview of the deterioration mechanism, manifestations of the reaction in North America, current state of knowledge for identification and quantification, and current and proposed legislation.