Effect of graphene oxide on chloride ION penetration in standard canadian mixes

Duplessis, Thomas, Brial, Victor et Ouellet-Plamondon, Claudiane. 2024. « Effect of graphene oxide on chloride ION penetration in standard canadian mixes ». In Smart & Sustainable Infrastructure: Building a Greener Tomorrow : Proceedings of the 1st Interdisciplinary Symposium on Smart & Sustainable Infrastructure (ISSSI 2023) (Vancouver, BC, Canada, Sept. 04-08, 2023) Coll. « RILEM Bookseries », vol. 48. pp. 730-740. Springer Science and Business Media B.V..

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Résumé

This study was conducted to evaluate the impact of a small percentage (0.03%) of graphene oxide (GO) on the properties of cement-based materials. The GO dispersion method (superplasticizers and sonication) and the use of binary binders were also variables of the study. To make this technology potentially accessible to concrete producers, commercially available GO was used for the trials. Through isothermal calorimetry, it was possible to characterize the hydration reaction of the GO-modified cementitious materials. The effect of GO is visible on the heat release rate curves, especially when dispersed by a superplasticizer and by a combination of superplasticizer and sonication. This effect is mainly noted in the amplitude of the calcium aluminate (C3A) peak. The compressive strength tests were used to evaluate the mechanical strength of mortar at 1, 7, and 28 days. To evaluate the effect of GO from a practical application point of view, chloride ion penetration tests were carried out at 28, 56, and 91 days, on concretes based on the Ministère des Transports (MTQ) and Canadian Standard Association (CSA) V-S/C-1 mixes. The results showed that GO slightly reduces the penetration of chloride ions varying with the cure period and the type of concrete mix.

Type de document:	Compte rendu de conférence
Professeur:	Professeur Ouellet-Plamondon, Claudiane
Affiliation:	Génie de la construction
Date de dépôt:	21 mars 2024 15:19
Dernière modification:	20 janv. 2025 16:42
URI:	https://espace2.etsmtl.ca/id/eprint/28455

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