Title:
Modeling the Structural Effects of Alkali-Aggregate Reactions on Reinforced Concrete
Author(s):
L. A. Clark
Publication:
Materials Journal
Volume:
88
Issue:
3
Appears on pages(s):
271-277
Keywords:
alkali-aggregate reaction; cracking (fracturing); curing; expansion; models; reinforced concrete; structural analysis; tests; Materials Research
DOI:
10.14359/1887
Date:
5/1/1991
Abstract:
The structural effects of alkali-aggregate reactions (AAR) are briefly described, and the implications of these effects on the modeling of reinforced concrete structures with AAR are considered. It is shown that the size and proportions of the reactive particles in the mix have significant effects on expansion due to AAR. Other important points that need to be considered when simulating AAR are: rate of expansion, the simulation of dead load stresses, the size and shape of control specimens, and concrete compaction. The effects of absolute size on AAR expansion and cracking are not clear, and further research is required to establish whether they are significant.