Microstructure characteristics of concrete incorporating metakaolin and PVA fibers and influence on the compressive strength

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.

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Abstract

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.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Impact Factor: cited By 0
Depositing User: Ms Sharifah Fahimah Saiyed Yeop
Date Deposited: 26 Mar 2022 03:20
Last Modified: 26 Mar 2022 03:20
URI: http://scholars.utp.edu.my/id/eprint/31459

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