Mullite macro-needles for reinforcement of refractory castables
Abstract Ceramic macro-needles incorporation as reinforcement in commercial refractory castable was studied. Ceramic macro-needles (Ø2x20 mm) were made from kaolinite clay and gibbsite to obtain mullite as the main crystalline phase. Specimens with the ceramic reinforcement were evaluated by compres...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Associação Brasileira de Cerâmica
2022-12-01
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| Series: | Cerâmica |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132022000400420&tlng=en |
| _version_ | 1811178272061390848 |
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| author | A. Mocciaro A. Cimas N. M. Rendtorff A. N. Scian |
| author_facet | A. Mocciaro A. Cimas N. M. Rendtorff A. N. Scian |
| author_sort | A. Mocciaro |
| collection | DOAJ |
| description | Abstract Ceramic macro-needles incorporation as reinforcement in commercial refractory castable was studied. Ceramic macro-needles (Ø2x20 mm) were made from kaolinite clay and gibbsite to obtain mullite as the main crystalline phase. Specimens with the ceramic reinforcement were evaluated by compression after being treated at two temperatures (815 and 1400 °C). The results were compared with those obtained using the same commercial concrete but reinforced with steel fibers and without reinforcement. Compression values presented by specimens with ceramic macro-needles were 74% and 50% higher than specimens with steel fibers after exposition to 815 and 1400 °C, respectively. Based on these results, it was established that ceramic macro-needles are a feasible solution to improve the mechanical resistance of castables exposed to high temperatures. |
| first_indexed | 2024-04-11T06:15:33Z |
| format | Article |
| id | doaj.art-b417bc37897b42489f9f7f8421115910 |
| institution | Directory Open Access Journal |
| issn | 1678-4553 |
| language | English |
| last_indexed | 2024-04-11T06:15:33Z |
| publishDate | 2022-12-01 |
| publisher | Associação Brasileira de Cerâmica |
| record_format | Article |
| series | Cerâmica |
| spelling | doaj.art-b417bc37897b42489f9f7f84211159102022-12-22T04:41:03ZengAssociação Brasileira de CerâmicaCerâmica1678-45532022-12-016838842042610.1590/0366-69132022683883342Mullite macro-needles for reinforcement of refractory castablesA. Mocciarohttps://orcid.org/0000-0001-7764-067XA. CimasN. M. RendtorffA. N. ScianAbstract Ceramic macro-needles incorporation as reinforcement in commercial refractory castable was studied. Ceramic macro-needles (Ø2x20 mm) were made from kaolinite clay and gibbsite to obtain mullite as the main crystalline phase. Specimens with the ceramic reinforcement were evaluated by compression after being treated at two temperatures (815 and 1400 °C). The results were compared with those obtained using the same commercial concrete but reinforced with steel fibers and without reinforcement. Compression values presented by specimens with ceramic macro-needles were 74% and 50% higher than specimens with steel fibers after exposition to 815 and 1400 °C, respectively. Based on these results, it was established that ceramic macro-needles are a feasible solution to improve the mechanical resistance of castables exposed to high temperatures.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132022000400420&tlng=enrefractoriesfibersmechanical properties |
| spellingShingle | A. Mocciaro A. Cimas N. M. Rendtorff A. N. Scian Mullite macro-needles for reinforcement of refractory castables Cerâmica refractories fibers mechanical properties |
| title | Mullite macro-needles for reinforcement of refractory castables |
| title_full | Mullite macro-needles for reinforcement of refractory castables |
| title_fullStr | Mullite macro-needles for reinforcement of refractory castables |
| title_full_unstemmed | Mullite macro-needles for reinforcement of refractory castables |
| title_short | Mullite macro-needles for reinforcement of refractory castables |
| title_sort | mullite macro needles for reinforcement of refractory castables |
| topic | refractories fibers mechanical properties |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132022000400420&tlng=en |
| work_keys_str_mv | AT amocciaro mullitemacroneedlesforreinforcementofrefractorycastables AT acimas mullitemacroneedlesforreinforcementofrefractorycastables AT nmrendtorff mullitemacroneedlesforreinforcementofrefractorycastables AT anscian mullitemacroneedlesforreinforcementofrefractorycastables |