Portland clinker with civil construction waste: influence of pellet geometry on the formation of crystalline phases
Efforts to reduce greenhouse gas emissions in the context of sustainable development have intensified, with the development of research aimed at the production of new materials and binders for construction. This article analyzes the influence of pellet geometry in the production of clinkers, with th...
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ANTAC - Associação Nacional de Tecnologia do Ambiente Construído
2020
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| Online Access: | https://seer.ufrgs.br/ambienteconstruido/article/view/100179 |
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ojs-article-1001792020-10-07T21:44:07Z Portland clinker with civil construction waste: influence of pellet geometry on the formation of crystalline phases Costa, Fernanda Nepomuceno Ribeiro, Daniel Véras Dias, Cléber Marcos Ribeiro CCW; spherical pellets; semi-spherical pellets; 3D printed mold; production procedure Efforts to reduce greenhouse gas emissions in the context of sustainable development have intensified, with the development of research aimed at the production of new materials and binders for construction. This article analyzes the influence of pellet geometry in the production of clinkers, with the incorporation of construction waste (CCW). Procedures adapted from the method proposed by Brazilian Portland Cement Association were adopted in studies of laboratory clinkers, in an attempt to simulate the stages of the industrial process. Pellets were prepared with the same formulation, however, with four different geometries: spherical, with diameters of 1 cm, 2 cm and 3 cm, with manual molding, and semi-spherical, with a diameter of 2 cm, using molds of PLA (polylactic acid) printed on a 3D printer to facilitate the molding of the clinkers in a standardized way. Clinkers were characterized mineralogically by x-ray diffraction (XRD) and the Rietveld method was used to quantify the phases. Variations in the quantities of the alite and belite phases were observed depending on the geometry of the pellets, although the same calcination conditions were used. This is probably due to the variation in the surface area (exposure area) and the gradients of the cooling rate. ANTAC - Associação Nacional de Tecnologia do Ambiente Construído FAPESB IFBA UFRB UEFS 2020-10-07 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://seer.ufrgs.br/ambienteconstruido/article/view/100179 Ambiente Construído; v. 20, n. 4 (2020); 225-241 Ambiente Construído; v. 20, n. 4 (2020); 225-241 Ambiente Construído; v. 20, n. 4 (2020); 225-241 1678-8621 1415-8876 eng https://seer.ufrgs.br/ambienteconstruido/article/view/100179/58734 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 |
Costa, Fernanda Nepomuceno Ribeiro, Daniel Véras Dias, Cléber Marcos Ribeiro |
| spellingShingle |
Costa, Fernanda Nepomuceno Ribeiro, Daniel Véras Dias, Cléber Marcos Ribeiro Portland clinker with civil construction waste: influence of pellet geometry on the formation of crystalline phases |
| author_facet |
Costa, Fernanda Nepomuceno Ribeiro, Daniel Véras Dias, Cléber Marcos Ribeiro |
| author_sort |
Costa, Fernanda Nepomuceno |
| title |
Portland clinker with civil construction waste: influence of pellet geometry on the formation of crystalline phases |
| title_short |
Portland clinker with civil construction waste: influence of pellet geometry on the formation of crystalline phases |
| title_full |
Portland clinker with civil construction waste: influence of pellet geometry on the formation of crystalline phases |
| title_fullStr |
Portland clinker with civil construction waste: influence of pellet geometry on the formation of crystalline phases |
| title_full_unstemmed |
Portland clinker with civil construction waste: influence of pellet geometry on the formation of crystalline phases |
| title_sort |
portland clinker with civil construction waste: influence of pellet geometry on the formation of crystalline phases |
| description |
Efforts to reduce greenhouse gas emissions in the context of sustainable development have intensified, with the development of research aimed at the production of new materials and binders for construction. This article analyzes the influence of pellet geometry in the production of clinkers, with the incorporation of construction waste (CCW). Procedures adapted from the method proposed by Brazilian Portland Cement Association were adopted in studies of laboratory clinkers, in an attempt to simulate the stages of the industrial process. Pellets were prepared with the same formulation, however, with four different geometries: spherical, with diameters of 1 cm, 2 cm and 3 cm, with manual molding, and semi-spherical, with a diameter of 2 cm, using molds of PLA (polylactic acid) printed on a 3D printer to facilitate the molding of the clinkers in a standardized way. Clinkers were characterized mineralogically by x-ray diffraction (XRD) and the Rietveld method was used to quantify the phases. Variations in the quantities of the alite and belite phases were observed depending on the geometry of the pellets, although the same calcination conditions were used. This is probably due to the variation in the surface area (exposure area) and the gradients of the cooling rate. |
| publisher |
ANTAC - Associação Nacional de Tecnologia do Ambiente Construído |
| publishDate |
2020 |
| url |
https://seer.ufrgs.br/ambienteconstruido/article/view/100179 |
| work_keys_str_mv |
AT costafernandanepomuceno portlandclinkerwithcivilconstructionwasteinfluenceofpelletgeometryontheformationofcrystallinephases AT ribeirodanielveras portlandclinkerwithcivilconstructionwasteinfluenceofpelletgeometryontheformationofcrystallinephases AT diasclebermarcosribeiro portlandclinkerwithcivilconstructionwasteinfluenceofpelletgeometryontheformationofcrystallinephases |
| _version_ |
1709370585494061056 |