Preparation of refractory calcium aluminate cement using the sonochemical process
Calcium aluminate cements (CAC) were prepared using the sonochemical process, followed by heat treatment. A study was made of the action of ultrasonic waves and the influence of thermal treatment conditions on two initial molar compositions of 1:1 and 1:2 of calcia:alumina. The aqueous suspension co...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2013-03-01
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| Series: | Materials Research |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000400006&tlng=en |
| _version_ | 1818978878591336448 |
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| author | Rafaela Roberta Lourenço Rômulo Simões Angélica José de Anchieta Rodrigues |
| author_facet | Rafaela Roberta Lourenço Rômulo Simões Angélica José de Anchieta Rodrigues |
| author_sort | Rafaela Roberta Lourenço |
| collection | DOAJ |
| description | Calcium aluminate cements (CAC) were prepared using the sonochemical process, followed by heat treatment. A study was made of the action of ultrasonic waves and the influence of thermal treatment conditions on two initial molar compositions of 1:1 and 1:2 of calcia:alumina. The aqueous suspension containing the raw materials (A-50 alumina and CaO) was subjected to an ultrasonic bath, followed by drying and burning at 1000, 1200 and 1300 ºC. These cements were characterized by SEM, XRD and the mechanical strength was evaluated by splitting tensile tests, using commercial cement as a reference. Furthermore, the phases were semi-quantified using the Rietveld method. The results show that hydration and sonochemical action increased the reactivity of the raw materials during firing and that phase formation is dependent on the thermal treatment conditions. The CAC cements were obtained at temperatures at least 200 ºC lower than those used in conventional methods, indicating the potential of this route of synthesis. |
| first_indexed | 2024-12-20T16:50:38Z |
| format | Article |
| id | doaj.art-296cb39e490b404eb7e784e6eb462c20 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-20T16:50:38Z |
| publishDate | 2013-03-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-296cb39e490b404eb7e784e6eb462c202022-12-21T19:32:49ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392013-03-01164731739Preparation of refractory calcium aluminate cement using the sonochemical processRafaela Roberta Lourenço0Rômulo Simões Angélica1José de Anchieta Rodrigues2Federal University of São CarlosFederal University of São Federal University of ParáFederal University of São CarlosCalcium aluminate cements (CAC) were prepared using the sonochemical process, followed by heat treatment. A study was made of the action of ultrasonic waves and the influence of thermal treatment conditions on two initial molar compositions of 1:1 and 1:2 of calcia:alumina. The aqueous suspension containing the raw materials (A-50 alumina and CaO) was subjected to an ultrasonic bath, followed by drying and burning at 1000, 1200 and 1300 ºC. These cements were characterized by SEM, XRD and the mechanical strength was evaluated by splitting tensile tests, using commercial cement as a reference. Furthermore, the phases were semi-quantified using the Rietveld method. The results show that hydration and sonochemical action increased the reactivity of the raw materials during firing and that phase formation is dependent on the thermal treatment conditions. The CAC cements were obtained at temperatures at least 200 ºC lower than those used in conventional methods, indicating the potential of this route of synthesis.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000400006&tlng=ensonochemistryheat treatmentsynthesiscalcium aluminate cement |
| spellingShingle | Rafaela Roberta Lourenço Rômulo Simões Angélica José de Anchieta Rodrigues Preparation of refractory calcium aluminate cement using the sonochemical process Materials Research sonochemistry heat treatment synthesis calcium aluminate cement |
| title | Preparation of refractory calcium aluminate cement using the sonochemical process |
| title_full | Preparation of refractory calcium aluminate cement using the sonochemical process |
| title_fullStr | Preparation of refractory calcium aluminate cement using the sonochemical process |
| title_full_unstemmed | Preparation of refractory calcium aluminate cement using the sonochemical process |
| title_short | Preparation of refractory calcium aluminate cement using the sonochemical process |
| title_sort | preparation of refractory calcium aluminate cement using the sonochemical process |
| topic | sonochemistry heat treatment synthesis calcium aluminate cement |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000400006&tlng=en |
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