Abstract
The application of nanomaterials in alkali-activated composites is gaining popularity over the decade. The thermally cured alkali-activated concrete is a potential replacement for traditional Portland cement-based concrete in precast industries. The present study is focused on the strength and durability performance of graphene oxide (GO) based ambient-cured alkali-activated slag (AAS) mortar at different percentages of replacement of slag. The performance of ambient temperature cured ASS with different percentages of GO is compared with the thermally cured alkali-activated mortar at the activator fluid concentration of 8 molar and conventional cement mortar. The compressive and flexural strengths of ambient-cured alkali-activated slag mortar increased by 22% and 15% respectively, compared to the other mixes up to 0.06% GO addition. This is due to accelerated alkali activation of slag owing to the higher specific surface and amorphicity of these nanoparticles, as confirmed by microanalyses. Additionally, the resistance to chloride-ion penetration is also enhanced due to this GO addition, making this a viable option for usage in aggressive environments.
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Adak, D., Srinivas, D., Ramagiri, K.K., Kar, A., Dutta, S. (2022). Effect of Graphene Oxide on Strength and Durability of Activated Slag Mortar. In: Fonseca de Oliveira Correia, J.A., Choudhury, S., Dutta, S. (eds) Advances in Structural Mechanics and Applications. ASMA 2021. Structural Integrity, vol 19. Springer, Cham. https://doi.org/10.1007/978-3-030-98335-2_36
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