Characterization of high strength mortars with nano alumina at elevated temperatures
In this study, the effect of elevated temperatures on chemical composition, microstructure and mechanical properties of high strength mortars with nano alumina was investigated. Mortars with 1, 2 and 3% nano alumina as cement replacement were prepared and then exposed to 100 °C, 200 °C, 300 °C, 400...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English English |
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2013
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| Online Access: | http://psasir.upm.edu.my/id/eprint/28582/ http://psasir.upm.edu.my/id/eprint/28582/1/Characterization%20of%20high%20strength%20mortars%20with%20nano%20alumina%20at%20elevated%20temperatures.pdf |
| _version_ | 1848846156749078528 |
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| author | Abang Ali, Abang Abdullah Demirboga, Ramazan Farzadnia, Nima |
| author_facet | Abang Ali, Abang Abdullah Demirboga, Ramazan Farzadnia, Nima |
| author_sort | Abang Ali, Abang Abdullah |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | In this study, the effect of elevated temperatures on chemical composition, microstructure and mechanical properties of high strength mortars with nano alumina was investigated. Mortars with 1, 2 and 3% nano alumina as cement replacement were prepared and then exposed to 100 °C, 200 °C, 300 °C, 400 °C, 600 °C, 800 °C and 1000 °C. XRD, DSC and SEM tests were carried out to identify chemical composition and microstructure changes in the cement matrix after being exposed to elevated temperatures. Residual compressive strength, relative elastic modulus and gas permeability coefficient of samples were also obtained. A brittleness index was defined to monitor changes in brittleness of samples after being exposed to elevated temperatures. Nano alumina enhanced compressive strength of samples up to 16% and improved residual compressive strength. An increase in the relative elastic modulus, higher energy absorption and lower permeability were also observed when 1% nano alumina was added. |
| first_indexed | 2025-11-15T08:58:14Z |
| format | Article |
| id | upm-28582 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T08:58:14Z |
| publishDate | 2013 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-285822015-09-08T07:11:25Z http://psasir.upm.edu.my/id/eprint/28582/ Characterization of high strength mortars with nano alumina at elevated temperatures Abang Ali, Abang Abdullah Demirboga, Ramazan Farzadnia, Nima In this study, the effect of elevated temperatures on chemical composition, microstructure and mechanical properties of high strength mortars with nano alumina was investigated. Mortars with 1, 2 and 3% nano alumina as cement replacement were prepared and then exposed to 100 °C, 200 °C, 300 °C, 400 °C, 600 °C, 800 °C and 1000 °C. XRD, DSC and SEM tests were carried out to identify chemical composition and microstructure changes in the cement matrix after being exposed to elevated temperatures. Residual compressive strength, relative elastic modulus and gas permeability coefficient of samples were also obtained. A brittleness index was defined to monitor changes in brittleness of samples after being exposed to elevated temperatures. Nano alumina enhanced compressive strength of samples up to 16% and improved residual compressive strength. An increase in the relative elastic modulus, higher energy absorption and lower permeability were also observed when 1% nano alumina was added. 2013 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/28582/1/Characterization%20of%20high%20strength%20mortars%20with%20nano%20alumina%20at%20elevated%20temperatures.pdf Abang Ali, Abang Abdullah and Demirboga, Ramazan and Farzadnia, Nima (2013) Characterization of high strength mortars with nano alumina at elevated temperatures. Cement and Concrete Research, 54 (2013). pp. 43-54. ISSN 0008-8846 10.1016/j.cemconres.2013.08.003 English |
| spellingShingle | Abang Ali, Abang Abdullah Demirboga, Ramazan Farzadnia, Nima Characterization of high strength mortars with nano alumina at elevated temperatures |
| title | Characterization of high strength mortars with nano alumina at elevated temperatures |
| title_full | Characterization of high strength mortars with nano alumina at elevated temperatures |
| title_fullStr | Characterization of high strength mortars with nano alumina at elevated temperatures |
| title_full_unstemmed | Characterization of high strength mortars with nano alumina at elevated temperatures |
| title_short | Characterization of high strength mortars with nano alumina at elevated temperatures |
| title_sort | characterization of high strength mortars with nano alumina at elevated temperatures |
| url | http://psasir.upm.edu.my/id/eprint/28582/ http://psasir.upm.edu.my/id/eprint/28582/ http://psasir.upm.edu.my/id/eprint/28582/1/Characterization%20of%20high%20strength%20mortars%20with%20nano%20alumina%20at%20elevated%20temperatures.pdf |