Assessment of the mechanical and microstructural performance of waste kraft fibre reinforced cement composite incorporating sustainable eco-friendly additives

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dc.contributor.authorTaiwo, Anuoluwapo S
dc.contributor.authorAyre, David S
dc.contributor.authorKhorami, Morteza
dc.contributor.authorRahatekar, Sameer S
dc.date.accessioned2024-09-18T10:04:14Z
dc.date.available2024-09-18T10:04:14Z
dc.date.freetoread2024-09-18
dc.date.issued2024-08-30
dc.date.pubOnline2024-08-30
dc.description.abstractThis study investigates the influence of limestone powder and metakaolin as sustainable eco-friendly additives on the properties and behavior of cementitious composite boards, with a focus on mechanical strength, physical properties, and microstructural characteristics. The experimental investigation begins with the characterization of the raw materials, including limestone powder, and metakaolin, to assess their particle sizes, elemental composition, and microstructural features. Cement composite boards were fabricated using an innovatively developed lab-simulated vacuum dewatering process, by varying the proportions of limestone powder and metakaolin as partial replacements for cement, along with waste kraft fibres as reinforcement. Mechanical testing was conducted to evaluate the flexural strength and behaviour of the composite boards according to standardized procedures. A microstructural analysis was performed using scanning electron microscopy (SEM) to examine the effect of additives on the cementitious matrix, fibrematrix interaction, and hydration products. The findings from the experimental study reveal insights into the influence of limestone powder and metakaolin on the mechanical properties and microstructure of waste kraft fibre-reinforced cement composite boards. Our analysis of the results shows that adding 9% limestone powder as partial cement replacement produces a 24% and 50% enhancement in flexural strength at 7 and 28 days of hydration, while that of metakaolin as partial cement replacement was optimum at 6% with an enhancement of 4% and 36%, respectively, at 7 and 28 days of hydration. The implications of these findings for the development of sustainable cementitious composite are discussed, including the potential benefits of using limestone powder and metakaolin as supplementary cementitious materials in waste kraft fibre-reinforced cement composite boards. Finally, recommendations for optimizing additive proportions are also provided to enhance the understanding and application of these materials in the construction and building industries.
dc.description.journalNameBuildings
dc.identifier.citationTaiwo AS, Ayre DS, Khorami M, Rahatekar SS. (2024) Assessment of the mechanical and microstructural performance of waste kraft fibre reinforced cement composite incorporating sustainable eco-friendly additives. Buildings, Volume 14, Issue 9, August 2024, Article number 2725
dc.identifier.eissn2075-5309
dc.identifier.elementsID552543
dc.identifier.issn2075-5309
dc.identifier.issueNo9
dc.identifier.paperNo2725
dc.identifier.urihttps://doi.org/10.3390/buildings14092725
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/22947
dc.identifier.volumeNo14
dc.languageEnglish
dc.language.isoen
dc.publisherMDPI
dc.publisher.urihttps://www.mdpi.com/2075-5309/14/9/2725
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject4005 Civil Engineering
dc.subject40 Engineering
dc.subject33 Built Environment and Design
dc.subject3302 Building
dc.subject11 Sustainable Cities and Communities
dc.subject12 Responsible Consumption and Production
dc.subject3301 Architecture
dc.subject3302 Building
dc.subject4005 Civil engineering
dc.subjectwaste cardboard paper
dc.subjectfibre cement board
dc.subjectcalcium carbonate
dc.subjectkaolinitic clay
dc.subjectmechanical properties
dc.subjectbuilding applications
dc.titleAssessment of the mechanical and microstructural performance of waste kraft fibre reinforced cement composite incorporating sustainable eco-friendly additives
dc.typeArticle
dcterms.dateAccepted2024-08-27

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