Skip to contentUnited States Department of Transportation - Federal Highway AdministrationSearch FHWAFeedback


Publication Details

Alkali-Silica Reactivity Field Identification Handbook

General Interest: provides practical guidance to engineers responsible for the day-to-day design, construction, rehabilitation, maintenance, and management of pavements.

Primary Topic: Materials-Concrete

Description: Two types of alkali-aggregate reaction (AAR) are currently recognized depending on the nature of the reactive mineral; these are alkali-silica reaction (ASR) and alkali-carbonate reaction (ACR). Both types of reaction can result in expansion and cracking of concrete elements, leading to a reduction in the service life of concrete structures. This handbook serves as an illustrated guide to assist users in detecting and distinguishing ASR in the field from other types of damages.

FHWA Publication Number: FHWA-HIF-12-022

Publication Year: 2012

Document Links: PDF (file size: 3 mb)

PDF files can be viewed with the Acrobat® Reader®

View Pavement Publications

Updated: 02/20/2015

United States Department of Transportation - Federal Highway Administration