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      Influence of pozzolanic addition on strength and microstructure of metakaolin-based concrete

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          Abstract

          The intent of this study is to explore the physical properties and long-term performance of concrete made with metakaolin (MK) as a binder, using microsilica (MS) and nanosilica (NS) as substitutes for a portion of the ordinary Portland cement (OPC) content. The dosage of MS was varied from 5% to 15% for OPC-MK-MS blends, and the dosage of NS was varied from 0.5% to 1.5% for OPC-MK-NS blends. Incorporation of these pozzolans accelerated the hardening process and reduced the flowability, consistency, and setting time of the cement paste. In addition, it produced a denser matrix, improving the strength of the concrete matrix, as confirmed by scanning electron microscopy and X-ray diffraction analysis. The use of MS enhanced the strength by 10.37%, and the utilization of NS increased the strength by 11.48% at 28 days. It also reduced the penetrability of the matrix with a maximum reduction in the water absorption (35.82%) and improved the resistance to the sulfate attack for specimens containing 1% NS in the presence of 10% MK. Based on these results, NS in the presence of MK can be used to obtain cementitious structures with the enhanced strength and durability.

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          Solubility and structure of calcium silicate hydrate

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            A review on fly ash characteristics – Towards promoting high volume utilization in developing sustainable concrete

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              The utilization of eco-friendly recycled powder from concrete and brick waste in new concrete: A critical review

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                Author and article information

                Contributors
                Role: ConceptualizationRole: InvestigationRole: MethodologyRole: Writing – original draft
                Role: ResourcesRole: ValidationRole: Writing – original draft
                Role: ConceptualizationRole: Formal analysisRole: InvestigationRole: MethodologyRole: ResourcesRole: ValidationRole: Writing – original draftRole: Writing – review & editing
                Role: ValidationRole: Writing – original draft
                Role: ConceptualizationRole: ValidationRole: Writing – original draft
                Role: ValidationRole: Writing – review & editing
                Role: ValidationRole: Writing – review & editing
                Role: Editor
                Journal
                PLoS One
                PLoS One
                plos
                PLOS ONE
                Public Library of Science (San Francisco, CA USA )
                1932-6203
                10 April 2024
                2024
                : 19
                : 4
                : e0298761
                Affiliations
                [1 ] Civil Engineering Department, M.R.S.P.T.U, Bathinda (Punjab), India
                [2 ] Department of Building Engineering, Energy Systems and Sustainability Science, Faculty of Engineering and Sustainable Development, University of Gävle, Gävle, Sweden
                [3 ] Civil Engineering Department, Galgotias College of Engineering and Technology, Greater Noida (Uttar Pradesh), India
                [4 ] Department of Civil Engineering, Faculty of Engineering, Necmettin Erbakan University, Konya, Turkey
                [5 ] Department of Civil Engineering, Lebanese American University, Byblos, Lebanon
                [6 ] Civil Engineering Department, College of Engineering, King Khalid University, Abha, Saudi Arabia
                Covenant University, NIGERIA
                Author notes

                Competing Interests: The authors have declared that no competing interests exist.

                Author information
                https://orcid.org/0000-0002-9431-7820
                Article
                PONE-D-23-35135
                10.1371/journal.pone.0298761
                11006177
                38598491
                615d50d0-b2cd-4b3c-b39a-7ee573bfb89c
                © 2024 Bansal et al

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                : 25 October 2023
                : 31 January 2024
                Page count
                Figures: 9, Tables: 2, Pages: 21
                Funding
                Funded by: Deanship of Scientific Research at King Khalid University, Abha, Saudi Arabia
                Award ID: RGP2/563/44
                Award Recipient :
                The authors are thankful to the Deanship of Scientific Research at King Khalid University, Abha, Saudi Arabia for providing support to this research work through Large Groups RGP2/563/44. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
                Categories
                Research Article
                Physical Sciences
                Materials Science
                Materials
                Binders
                Cements
                Physical Sciences
                Materials Science
                Materials
                Composite Materials
                Concrete
                Physical Sciences
                Materials Science
                Materials Physics
                Microstructure
                Physical Sciences
                Physics
                Materials Physics
                Microstructure
                Physical Sciences
                Chemistry
                Chemical Compounds
                Salts
                Sulfates
                Physical Sciences
                Materials Science
                Materials
                Crystals
                Engineering and Technology
                Nanotechnology
                Nanoparticles
                Physical Sciences
                Physics
                Condensed Matter Physics
                Solid State Physics
                Crystallography
                Crystal Structure
                Physical Sciences
                Chemistry
                Chemical Composition
                Custom metadata
                Data are available within the manuscript itself.

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                Uncategorized

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