000207266 001__ 207266
000207266 005__ 20181203023825.0
000207266 0247_ $$2doi$$a10.1016/j.cemconres.2014.09.006
000207266 022__ $$a0008-8846
000207266 02470 $$2ISI$$a000350520300001
000207266 037__ $$aARTICLE
000207266 245__ $$aInfluence of visco-elasticity on the stress development induced by alkali-silica reaction
000207266 260__ $$aOxford$$bPergamon-Elsevier Science Ltd$$c2015
000207266 269__ $$a2015
000207266 300__ $$a8
000207266 336__ $$aJournal Articles
000207266 520__ $$aThe alkali-silica reaction causes long-term degradation in the microstructure of affected concrete as well as macroscopic expansion. In this paper, a micro-mechanical model based upon an explicit representation of the microstructure has been used to simulate the role of creep on the expansion and damage induced by the reaction. The model accounts for the coupling between damage propagation and stress relaxation in the cement paste. This study indicates that the influence of the visco-elastic nature of the material on the overall expansion is within the experimental scatter. However, it is shown that creep can explain the comparatively low amount of damage in the cement paste as observed experimentally. Creep also increases the amount of damage in the aggregates when the rate of reaction increases. Overall, the results presented in this paper indicate that accelerated experiments may not be representative of the degradation in the field at equivalent degrees of reaction. (C) 2014 Elsevier Ltd. All rights reserved.
000207266 6531_ $$aAlkali-aggregate reaction
000207266 6531_ $$aCreep
000207266 6531_ $$aFinite element analysis
000207266 6531_ $$aMicromechanics
000207266 6531_ $$aDegradation
000207266 700__ $$aGiorla, Alain B.
000207266 700__ $$0244030$$aScrivener, Karen L.$$g138857
000207266 700__ $$aDunant, Cyrille F.
000207266 773__ $$j70$$q1-8$$tCement And Concrete Research
000207266 909C0 $$0252300$$pLMC$$xU10341
000207266 909CO $$ooai:infoscience.tind.io:207266$$pSTI$$particle
000207266 917Z8 $$x184559
000207266 937__ $$aEPFL-ARTICLE-207266
000207266 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000207266 980__ $$aARTICLE