Marc-André Bérubé

TL;DR: In this article, the authors proposed a risk-evaluation process based on three factors judged critical for the development of damage in concrete structures due to alkali-silica reaction. The factors are (a) the degree of reactivity of the particular reactive aggregate, (b) the size of the concrete element and the environmental conditions it will face, and (c) the expected service life of the structure.

TL;DR: In this article, the pore solution of half-specimens was extracted by high-pressure squeezing and compared with the composition results of the first extraction, and the results obtained from this investigation confirmed that a certain part of the alkali ions in pore solutions that had become fixed by drying are not subsequently extracted after rewetting.

TL;DR: In this article, a number of concrete tower foundations that support power lines over the St. Lawrence River in the Quebec City area were showing deterioration related to alkali-aggregate reactions.

TL;DR: In this paper, a high-alkali (HA) and a low-alkaline (LA) cement were used in order to evaluate the cement chemical composition on the expansion and on the chemistry of the pore water.

TL;DR: In this paper, the authors evaluated the potential alkali-reactivity in concrete aggregates and found that only the Trenton and Black River limestones with more than 6% insoluble residues produced excessive expansion in the concrete prism test.