ROLE OF CREEP ON THE MICROSTRUCTURAL DAMAGE INDUCED BY ALKALI-SILICA REACTION

Author(s): Alain B. Giorla , Cyrille F. Dunant and Karen L. Scrivener
Book Title: RILEM International Symposium on Concrete Modelling - CONMOD 2014
Editor: Kefei Li, Peiyu Yan and Rongwei Yang
ISBN: 978-2-35158-139-1
e-ISBN: 978-2-35158-140-7
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 197-203
Total Pages: 7
Language: English

Abstract: Alkali-silica reaction causes a macroscopic expansion and microstructural damage in affected concrete on time scales similar to that of the creep deformations. In the current paper we investigate the role of the visco-elastic nature of the cement paste on the propagation of damage at the microstructure level. A novel space-time finite elements method is developed to simulate the simultaneous creep and damage propagation in the paste. The algorithm solves for when damage occurs, which provides an accurate coupling between these phenomena and accounts explicitly for simultaneous crack growth. We show the delaying effect of creep on the damage propagation in the microstructure, which provides a better understanding of the long-term behaviour of structures.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00