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Study on Combined Effects of Fly Ash, GGBS and Advanced Nanomaterials on the Properties of SCC

Study on Combined Effects of Fly Ash, GGBS and Advanced Nanomaterials on the Properties of SCC This paper presents comparative experimental study on rheological, strength, and durability properties of self-compacting concrete (SCC) using fly ash, GGBS and different nanomaterials. For the test, a fraction of Portland cement is replaced by fly ash and GGBS as 20% and 30% by weight (wt) of cement in all mixes, respectively. Now for the fly ash-GGBS-based SCC incorporated with different nanomaterials at different percentages by wt of cement, the nanomaterials used in the study are nano-silica (NS), nano-alumina (NA) and graphene oxide (GO). Similar percentages (1.5–9% by wt of cement with increment of 1.5%) of NS and NA were used in SCC, whereas GO used as 0.02–0.1% with increment of 0.02% by wt of cement. The rheological and mechanical properties are tested, and the results indicated that by the replacement of cement by nanomaterials the fresh properties of SCC start decreasing especially addition of NS and NA, whereas addition of graphene oxide does not show much effect on fresh properties of SCC. Hardened properties improved in strength by adding nanomaterials than that of the control concrete mix (100% cement). Further durability tests such as water permeability test and accelerated resistance corrosion test (ARCT) were conducted. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of The Institution of Engineers (India):Series A Springer Journals

Study on Combined Effects of Fly Ash, GGBS and Advanced Nanomaterials on the Properties of SCC

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Publisher
Springer Journals
Copyright
Copyright © The Institution of Engineers (India) 2022
ISSN
2250-2149
eISSN
2250-2157
DOI
10.1007/s40030-022-00657-x
Publisher site
See Article on Publisher Site

Abstract

This paper presents comparative experimental study on rheological, strength, and durability properties of self-compacting concrete (SCC) using fly ash, GGBS and different nanomaterials. For the test, a fraction of Portland cement is replaced by fly ash and GGBS as 20% and 30% by weight (wt) of cement in all mixes, respectively. Now for the fly ash-GGBS-based SCC incorporated with different nanomaterials at different percentages by wt of cement, the nanomaterials used in the study are nano-silica (NS), nano-alumina (NA) and graphene oxide (GO). Similar percentages (1.5–9% by wt of cement with increment of 1.5%) of NS and NA were used in SCC, whereas GO used as 0.02–0.1% with increment of 0.02% by wt of cement. The rheological and mechanical properties are tested, and the results indicated that by the replacement of cement by nanomaterials the fresh properties of SCC start decreasing especially addition of NS and NA, whereas addition of graphene oxide does not show much effect on fresh properties of SCC. Hardened properties improved in strength by adding nanomaterials than that of the control concrete mix (100% cement). Further durability tests such as water permeability test and accelerated resistance corrosion test (ARCT) were conducted.

Journal

Journal of The Institution of Engineers (India):Series ASpringer Journals

Published: Dec 1, 2022

Keywords: Nano-silica; Nano-alumina; Graphene oxide; Self-compacting concrete; Hardened properties; Nanomaterials

References