Influence of electric arc furnace dust and lime kiln waste in Portland cement hydration
Studies have indicated that the use of electric arc furnace dust (EAFD) results in a delay in the hydration time of Portland cement. Calcium-rich waste such as lime kiln waste (LKW) is one of the techniques used to offset this delay as it accounts for the lack of this element in calcium silicate hyd...
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| Μορφή: | Online |
| Γλώσσα: | eng |
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ANTAC - Associação Nacional de Tecnologia do Ambiente Construído
2020
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| Διαθέσιμο Online: | https://seer.ufrgs.br/ambienteconstruido/article/view/99831 |
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ojs-article-998312020-10-07T22:25:08Z Influence of electric arc furnace dust and lime kiln waste in Portland cement hydration Metz, Josué Claudio Maciel, Elenize Ferreira Garbin, Marilise Modolo, Regina Célia Espinosa Moraes, Carlos Alberto Mendes Moraes, Carlos Alberto Mendes Gomes, Lucas Bonn Brehm, Feliciane Andrade Electric arc furnace dust; Lime kiln waste; Portland cement hydration; Portland cement mixtures. Studies have indicated that the use of electric arc furnace dust (EAFD) results in a delay in the hydration time of Portland cement. Calcium-rich waste such as lime kiln waste (LKW) is one of the techniques used to offset this delay as it accounts for the lack of this element in calcium silicate hydrate (C-S-H) production in the mixture. The objective of this study was to evaluate the influence of electric arc furnace dust (EAFD) and lime kiln waste (LKW) in the hydration process of Portland cement pastes and their influence in setting time and hydration heat. The methodology used required several steps: physiochemical and micro-structural characterization of waste samples; definition and production cement pastes with different levels of waste substitution and a reference paste and evaluation of the cement pastes with respect to setting time and hydration heat. Results showed that the substitution of 1% EAFD with or without LKW presented similar hydration heats as the reference paste. This indicated that EAFD+LKW substitution would not affect substantially the hydration reactions of cement and could allow waste recycling in construction materials. ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2020-10-07 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://seer.ufrgs.br/ambienteconstruido/article/view/99831 Ambiente Construído; v. 20, n. 4 (2020); 205-224 Ambiente Construído; v. 20, n. 4 (2020); 205-224 Ambiente Construído; v. 20, n. 4 (2020); 205-224 1678-8621 1415-8876 eng https://seer.ufrgs.br/ambienteconstruido/article/view/99831/58732 Direitos autorais 2020 Ambiente Construído https://creativecommons.org/licenses/by/4.0 |
| institution |
Universidade Federal do Rio Grande do Sul |
| collection |
OJS |
| language |
eng |
| format |
Online |
| author |
Metz, Josué Claudio Maciel, Elenize Ferreira Garbin, Marilise Modolo, Regina Célia Espinosa Moraes, Carlos Alberto Mendes Moraes, Carlos Alberto Mendes Gomes, Lucas Bonn Brehm, Feliciane Andrade |
| spellingShingle |
Metz, Josué Claudio Maciel, Elenize Ferreira Garbin, Marilise Modolo, Regina Célia Espinosa Moraes, Carlos Alberto Mendes Moraes, Carlos Alberto Mendes Gomes, Lucas Bonn Brehm, Feliciane Andrade Influence of electric arc furnace dust and lime kiln waste in Portland cement hydration |
| author_facet |
Metz, Josué Claudio Maciel, Elenize Ferreira Garbin, Marilise Modolo, Regina Célia Espinosa Moraes, Carlos Alberto Mendes Moraes, Carlos Alberto Mendes Gomes, Lucas Bonn Brehm, Feliciane Andrade |
| author_sort |
Metz, Josué Claudio |
| title |
Influence of electric arc furnace dust and lime kiln waste in Portland cement hydration |
| title_short |
Influence of electric arc furnace dust and lime kiln waste in Portland cement hydration |
| title_full |
Influence of electric arc furnace dust and lime kiln waste in Portland cement hydration |
| title_fullStr |
Influence of electric arc furnace dust and lime kiln waste in Portland cement hydration |
| title_full_unstemmed |
Influence of electric arc furnace dust and lime kiln waste in Portland cement hydration |
| title_sort |
influence of electric arc furnace dust and lime kiln waste in portland cement hydration |
| description |
Studies have indicated that the use of electric arc furnace dust (EAFD) results in a delay in the hydration time of Portland cement. Calcium-rich waste such as lime kiln waste (LKW) is one of the techniques used to offset this delay as it accounts for the lack of this element in calcium silicate hydrate (C-S-H) production in the mixture. The objective of this study was to evaluate the influence of electric arc furnace dust (EAFD) and lime kiln waste (LKW) in the hydration process of Portland cement pastes and their influence in setting time and hydration heat. The methodology used required several steps: physiochemical and micro-structural characterization of waste samples; definition and production cement pastes with different levels of waste substitution and a reference paste and evaluation of the cement pastes with respect to setting time and hydration heat. Results showed that the substitution of 1% EAFD with or without LKW presented similar hydration heats as the reference paste. This indicated that EAFD+LKW substitution would not affect substantially the hydration reactions of cement and could allow waste recycling in construction materials. |
| publisher |
ANTAC - Associação Nacional de Tecnologia do Ambiente Construído |
| publishDate |
2020 |
| url |
https://seer.ufrgs.br/ambienteconstruido/article/view/99831 |
| work_keys_str_mv |
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1709370547031244800 |