Title:
An Interpretation of Some Published Researches on the Alkali-Aggregate Reaction
Part 2 - A Hypothesis Concerning Safe and Unsafe Reactions with Reactive Silica in Concrete
Author(s):
T. C. Powers and H. H. Steinour
Publication:
Journal Proceedings
Volume:
51
Issue:
4
Appears on pages(s):
785-812
Keywords:
no keywords
DOI:
10.14359/11718
Date:
4/1/1955
Abstract:
Enlarging on considerations set down in Part 1, the authors develop a hypothesis concerning reactions between reactive silica, calcium hydroxide, and alkali in concrete. The hypothesis is that the reaction proceeds safely or unsafely according to the relative amounts of calcium hydroxide and alkali absorbed in the outer part of the reacted layer of the opal particle. Published experimental data are analyzed according to the hypothesis with the aid of Kalousek's data on the lime-alkali-silica-water system. Several conclusions are drawn, bearing on safe limits of alkali content and safe silica-alkali ratios.