Influence of creep on Alkali-Silica Reaction development

Author(s): Cyrille F. Dunant
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 1
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
ISBN:978-2-35158-199-5
e-ISBN:978-2-35158-198-8
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 373-378
Total Pages: 6
Language : English

Abstract: The alkali-silica reaction (ASR) is the most important durability issue affecting concrete not concerning reinforcing steel. Its development, notably in mass concrete structures such as dams, is slow. The slow development of damage on time scales congruent with creep is a difficult micromechanical problem. In this work, we show how a micro-level simulation can separate the load dissipation from damage from that of creep and predict how damage is spread between aggregates and paste as the reaction evolves. We highlight notably the importance of crack percolating from the aggregates to the paste matrix. This has consequences in the interpretation of laboratory results as well as the prognosis of structures.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00