Cracking sensitivity of activated blended binders under autogenous condition

Author(s): Darquennes Aveline, Vigroux Martin, Benboudjema Farid
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: 285-290
Total Pages: 6
Language : English

Abstract: In order to reduce the carbon footprint of the Portland cement manufacture, clinker is often substituted by mineral additions. Binders with a high content of mineral additions limit the greenhouse gas emissions and have interesting sustainability properties: low permeability, better resistance to leaching, etc. However, these materials are characterized by slow hydration kinetics. To accelerate their hydration kinetics and to improve their strength at early age, various solutions exist: additional grinding, thermal curing and use of chemical activators for example. In this article, the effects of chemical activation on the performance of blended binders are experimentally studied under autogenous condition. Based on the mechanical properties and autogenous shrinkage, a performance index is proposed to determine the cracking sensitivity of these mixtures.

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