63. Testing and modelling of mortar early-age behaviour for durability prediction

Title: 63. Testing and modelling of mortar early-age behaviour for durability prediction
Author(s): A.S. Bretelle, P. Ienny, A. Messan, D. Nectoux
Paper category : conference
Book title: 6th International RILEM Symposium on Fibre Reinforced Concretes
Editor(s): M. di Prisco, R. Felicetti and G.A. Plizzari
Print-ISBN: 2-912143-51-9
e-ISBN: 2912143748
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 731 - 742
Total Pages: 12
Nb references: 8
Language: English

Abstract: The objective of this paper is to set up a methodology for the characterization of mechanical properties of evolutive concretes and mortars. More specifically, the internal strain due to the drying shrinkage of a ring mortar specimen subjected to non-isothermal curing has been considered. We propose methods, coupling both an elastic theoretical model and experimental techniques (ring traction test instrumented with an extensometer and micro-penetration test) to assess quantitatively the different mechanisms from a macroscopic standpoint. These methods could give us the possibility to predict the behaviour of a mortar during its first day of drying and inform us about its potential cracking behaviour. The background of this research is to provide early age behavioural information on fibrous and plain mortar that are exposed to drying. This method could be a way of understanding the shrinkage at early age as well as a good tool for comparison between materials. In this way, the impact of glass fibres on early age behaviour is highlighted.

Online publication: 2004-08-30
Publication type : full_text
Public price (Euros): 0.00