Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10773/20761
Título: | Influence of fired clay brick waste additions on the durability of mortars |
Autor: | Schackow, A. Stringari, D. Senff, L. Correia, S. L. Segadaes, A. M. |
Palavras-chave: | NATURAL POZZOLANS CONCRETE METAKAOLIN RESISTANCE BEHAVIOR PERFORMANCE CARBONATION KAOLINITE CHLORIDE KINETICS |
Data: | 2015 |
Editora: | ELSEVIER SCI LTD |
Resumo: | The use of metakaolin is known to help improve properties of Portland cement-based mortars. The presumed similarities between the characteristics of metakaolin and those of a powdered (<45 mu m) fired clay brick clean waste (CBW) led to the investigation of the effect on the durability of mortars of partial replacement (10, 25 and 40 wt.%) of Portland cement by CBW. Properties such as 28 and 90 days-compressive strength, water absorption, apparent porosity, absorption by capillarity, chloride retention, carbonation depth and sulphate resistance were evaluated. The CBW-containing cured mortars showed improved strength and density, as the result of combined physical and pozzolanic pore filling effect of added CBW. However, CBW-free mortar exhibited larger spreading and, being more porous, higher sulphate resistance and ability to absorb chlorides. Optimum performance was found for the 40 wt.% CBW mortar whose compressive strength can be up to 130% higher than that of the CBW-free mortar. (C) 2015 Elsevier Ltd. All rights reserved. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/20761 |
DOI: | 10.1016/j.cemconcomp.2015.04.019 |
ISSN: | 0958-9465 |
Versão do Editor: | 10.1016/j.cemconcomp.2015.04.019 |
Aparece nas coleções: | CICECO - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Influence of fired clay brick waste additions on the durability of mortars_10.1016j.cemconcomp.2015.04.019.pdf | 3 MB | Adobe PDF |
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