Citation
Abstract
In this study, SEM, EDX, XRD, DAT and TGA are used to perform microstructure analyses of autoclaved ground dune sand–ordinary Portland cement (GDS–OPC) pastes. Pastes containing 0%, 10%, 20%, 30% and 40% GDS as cement replacement were prepared for this purpose. The microstructure analyses were used to examine the microscale changes that occur in the GDS–OPC pastes with increasing GDS replacement levels. The SEM and EDX results showed the clear formation of dense and newly formed thin crystalline calcium silicate hydrate with a low CaO/SiO2 ratio. The XRD, DTA and TGA analyses revealed that the portlandite phase had been eliminated. The microstructure analyses reveal how GDS contributes to the strength and physical properties of concrete.
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Additional Metadata
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Engineering |
| DOI Number: | https://doi.org/10.1016/j.conbuildmat.2014.04.040 |
| Publisher: | Elsevier |
| Keywords: | Dune sand; Cement paste; Microstructure analysis; Autoclave curing |
| Depositing User: | Nurul Ainie Mokhtar |
| Date Deposited: | 15 Dec 2015 08:09 |
| Last Modified: | 15 Dec 2015 08:09 |
| Altmetrics: | http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.conbuildmat.2014.04.040 |
| URI: | http://psasir.upm.edu.my/id/eprint/34520 |
| Statistic Details: | View Download Statistic |
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