Research Brief: Simulating the Formation of ASR Gels
Name
ASR_Research_Brief_2019.pdf
Size
795.16 KB
Format
Adobe PDF
Checksum (MD5)
d76314fbab3dab021933c2966871cd0a
Author(s)
Dupuis, Romain
Pellenq, Roland
Date Issued
April 2019
Series/Report no.
MIT CSHub Research Brief; Volume 2019, Issue 3
Abstract
Alkali-silica-reaction (ASR) is a significant cause of premature concrete deterioration. Although it has received much research attention, an essential question still remains—how does a soft gel, as is formed by this reaction, induce the critical level of stress to exceed the strength of, and crack the concrete matrix? One possibility is that the ASR gel increases in viscosity as it imbibes calcium with age and a concomitant expansion causes the concrete failure. Another is that the gel’s rate of flow into the porous microstructure is slower than the rate at which it forms, which builds up stresses that cannot be relieved. To better understand ASR mechanisms and to eventually test these hypotheses, we sought a basic understanding at the atomic scale.
Subjects
Poromechanics
Cement
Alkali-silica Reaction
Persistent DSpace Link
