par Lacante, Maïté 
;Delsaute, Brice ;Staquet, Stéphanie
Référence Materials, 2025, 18, page (25), 1073
Publication Publié, 2025-02-27
;Delsaute, Brice ;Staquet, Stéphanie Référence Materials, 2025, 18, page (25), 1073
Publication Publié, 2025-02-27
Article révisé par les pairs
| Résumé : | This study investigates the influence of curing temperature (explored at 10 ◦C,20 ◦C, and 30 ◦C) on the volume changes of alkali-activated slag (AAS) pastes with theaim of expanding existing knowledge on alkali-activated materials (AAMs). The focuswas on autogenous and thermal strains, internal relative humidity (IRH), heat flow andcumulative heat, setting times, and workability. The results indicate that increasing thecuring temperature to 30 ◦C reduces autogenous shrinkage, likely due to changes in theelastic modulus and viscoelastic properties, while promoting swelling, especially for highermolarities. The coefficient of thermal expansion (CTE), related to thermal strains, is higherwhen the curing temperature is increased, but its development is delayed. The IRH isinfluenced more by the activating solution’s molarity than by curing temperature, althoughtemperature does affect the initial IRH. The study also revealed that higher curing temperaturesaccelerate chemical reactions and reduce setting times. The initial workability wassignificantly affected by the solution-to-binder ratio, while higher temperatures decreasedworkability, especially at higher molarities. These findings contribute to the understandingof how curing temperature influences the durability of AAS pastes, offering insights intooptimized construction practices under varying environmental conditions. |
