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Title: ASR-Related Distress in Floor Coatings

Author(s): Xiaoqiang (Hugh) Hou, Richard A. Cechner, Terrence M. McGovern, Kevin A. Michols, and Todd Nelson

Publication: Concrete International

Volume: 41

Issue: 11

Appears on pages(s): 26-29

Keywords: blister, aggregate, surface, flooring

Date: 11/1/2019

Blistering of flooring in three buildings was found to be due to alkali-silica reaction (ASR) in the near-surface concrete. High moisture conditions, caused by impermeable flooring acting as a vapor retarder (allowing condensation to form near the surface), and high alkalinity near the slab surface affected reactive particles in the concrete aggregates. The authors discuss findings of their investigations and provide necessary steps in proper ASR determination.


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