Title: Use of Damage Rating Index to Quantify Alkali-Silica Reaction Damage in Concrete: Fine versus Coarse Aggregate

Author(s): L. F. M. Sanchez, B. Fournier, M. Jolin, M. A. B. Bedoya, J. Bastien, and J. Duchesne

Publication: Materials Journal

Volume: 113

Issue: 4

Appears on pages(s): 395-407

Keywords: alkali-aggregate reaction; crack detection; Damage Rating Index; degradation; durability; expansion

DOI: 10.14359/51688983

Date: 7/1/2016

Abstract:
The Damage Rating Index (DRI), a microscopic and semi-quantitative petrographic tool, is a method that has increasingly been used in North America and Europe because it can answer questions regarding the nature and the degree of damage in concrete affected by deleterious mechanisms such as alkali-aggregate reaction (AAR). This paper presents the results of the condition assessment, using the DRI, of concrete mixtures of different strengths and incorporating different reactive aggregate types (fine versus coarse aggregate) with the aim of verifying both how alkali-silica reaction (ASR) develops against its expansion levels and how the DRI could be used to better quantify damage in concrete due to ASR.