Yap, Soon Poh and Goh, Yingxin and Goh, Wan Xien and Mo, Kim Hung and Liu, Michael Yong Jing and Ibrahim, Hussein Adebayo (2022) Relationship between microstructure and performance of polypropylene fibre reinforced cement composites subjected to elevated temperature. European Journal Of Environmental And Civil Engineering, 26 (5). pp. 1792-1806. ISSN 1964-8189, DOI https://doi.org/10.1080/19648189.2020.1734489.
Full text not available from this repository.Abstract
This article presents the investigation on mechanical and transport properties of polypropylene (PP) fibre reinforced cement composites with varying fibre volume (0.05-0.30%). Fresh property of the fibre reinforced concrete was evaluated through the flow table test, while hardened properties including compressive strength (1, 3, 7 and 28-day), and modified flexural strength, ultrasonic pulse velocity and water absorption were assessed at the 28-day. The effects of fibre addition on mechanical properties were evaluated at room temperature and 200 degrees C. Microstructural characterizations were performed using field emission scanning electron microscopy (FESEM) coupled with energy dispersive X-ray spectroscopy (EDX). Micrographs of the failed PP fibre reinforced composites indicated that the increase in flexural strength at room temperature was attributed to the crack bridging and fibre debonding at the fibre/matrix interface. Higher water absorption value was achieved for PP reinforced composites subjected to elevated temperature compared to control mortar. FESEM/EDX analyses on the elevated temperature samples indicated that the increment was due to the growing of macro-pores from the empty space left behind by fibre settlement. In conclusion, the addition of PP fibres in the cement mortar adversely affect the strength when the composite is subjected to elevated temperature, but resulted in improved durability.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Capillary wicking action; Elemental composition; Fibre-reinforced mortar; Pore structure; Sorptivity |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Engineering > Department of Civil Engineering Faculty of Engineering > Department of Mechanical Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 10 Oct 2023 06:17 |
| Last Modified: | 10 Oct 2023 06:17 |
| URI: | http://eprints.um.edu.my/id/eprint/42489 |
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