| dc.creator | Rashad, Alaa M. | |
| dc.date | 2020-04-30 | |
| dc.identifier | http://revistadelaconstruccion.uc.cl/index.php/RDLC/article/view/12304 | |
| dc.identifier | 10.7764/RDLC.19.1.42-51 | |
| dc.description | In this work, the opportunity of employing crystalline silica in the form of quartz powder (QP) to increase the fire resistance of alkali-activated slag (AAS) has been explored. The ground granulated blast-furnace slag (designated as slag) was partially replaced with QP at levels changed from 5% to 30% with a step of 5%, by weight. After curing for 28 days, the specimens were subjected to elevated temperatures varying from 400 oC to 1000 oC with a step of 200 oC for 2 h. The compressive strength before and after heating was measured. The new formed phases were evaluated by using X-ray diffraction (XRD), whilst the decomposition phases were evaluated by using thermogravimetric (TGA). The changes in the microstructures were monitored by using scanning electron microscopy (SEM). The results showed a positive effect of incorporation of QP, up to 30%, in AAS system before and after exposure to elevated temperatures.
| en-US |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Escuela de Construcción Civil de la Pontificia Universidad Católica de Chile | en-US |
| dc.relation | http://revistadelaconstruccion.uc.cl/index.php/RDLC/article/view/12304/11084 | |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/4.0 | en-US |
| dc.source | Revista de la Construcción. Journal of Construction; Vol. 19 No. 1 (2020): Revista de la Construcción. Journal of Construction; 42-51 | en-US |
| dc.source | 0718-915X | |
| dc.subject | Alkali-activated slag | en-US |
| dc.subject | Quartz powder | en-US |
| dc.subject | Elevated temperatures | en-US |
| dc.subject | residual compressive strength | en-US |
| dc.title | An investigation on alkali-activated slag pastes containing quartz powder subjected to elevated temperatures | en-US |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
