relation: https://khub.utp.edu.my/scholars/5853/ title: Microstructure characteristics of concrete incorporating metakaolin and PVA fibers and influence on the compressive strength creator: Khan, S.U. creator: Shafiq, N. creator: Ayub, T. description: In this paper, microstructure of concrete is investigated using metakaolin (MK) as cement replacing material and Polyvinyl Alcohol (PVA) fibers. Total ten (10) mixes of concrete are examined by varying PVA fiber aspect ratio. It was found that MK refines the pore structure, improves interfacial transition zone (ITZ) due to its pozzolanic effects, reduces portlandite (Ca(OH) 2 ) content and bridges the gap between matrix and aggregates due to finer particle size. Due to improvement in ITZ, the compressive strength was improved. There was no indication of Ca(OH) 2 around the PVA fibers in the presence of MK and the interface between the fiber and matrix was observed very narrow. © 2015 AIP Publishing LLC. publisher: American Institute of Physics Inc. date: 2015 type: Conference or Workshop Item type: PeerReviewed identifier: Khan, S.U. and Shafiq, N. and Ayub, T. (2015) Microstructure characteristics of concrete incorporating metakaolin and PVA fibers and influence on the compressive strength. In: UNSPECIFIED. relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063824924&doi=10.1063%2f1.4919155&partnerID=40&md5=1b6938efe86699d8e45233262a583886 relation: 10.1063/1.4919155 identifier: 10.1063/1.4919155