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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Diagnosis of a Case of Harmless Alkali-Silica Reaction in a Cracked Concrete Pavement
Author(s): L. F. Luco and R. J. Torrent
Publication: Special Publication
Appears on pages(s): 521-536
Keywords: alkali-silica reaction; cracks; diagnosis; pavement; petrography
Abstract:This paper describes a cracked concrete pavement that had to be repaired. A superficial analysis had established the symptoms of alkali-silica reaction (ASR), to which the damage of the pavement was attributed. However, using such diagnosis techniques as SHRP-C-315 and microscopy observation of thin sections, it was established that the mapped cracking originated at an early-age of the concrete. The scarce symptoms of ARS were found only in a limited area of the slabs' section, just below the crack tips, with only slight damage associated with it. This was attributed to the "wick" action of the cracks, which led to a concenrration of alkali ions there. This more accurate diagnosis led to a much more simple and economical repair Strategy than what would have been required had the cracking been caused by ASR.
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