Durability of concrete with alternative supplementary cementitious materials
SAILLIO ; FROHARD ; CHAUSSADENT ; DIVET ; TAGNIT-HAMOU
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
SAILLIO ; FROHARD ; CHAUSSADENT ; DIVET ; TAGNIT-HAMOU
Résumé / Abstract
Numerous industrial by-products have potential for use as alternative supplementary cementitious materials (ASCMs) in concrete. The objective of the present study is to define the reactivity and the impact on reinforcement corrosion of three ASCMs: glass powder, biomass fly ashes, and calcined sewage sludge. The first results, based on chemical tests and thermodynamic analysis have highlighted the behavior of these ASCMs and led to the design of concretes which exhibit good mechanical properties with a replacement of Portland cement of 15 or 20%. It can be highlighted that the main parameter considering the mechanical properties is the water to binder ratio; here 0.40 and 0.55 ratios are studied. The second part of the study deals with concrete durability properties such as chloride and carbon dioxide transfer properties. Due to its pozzolanic reactivity, glass powder significantly increases carbonation process but limits chloride penetration in concrete.
