Development and characterization of cemet composite hybrid reinforced with short malva fibers and waste timber

Autor: Galv??o, Ja??ne K??ssia Lira
Přispěvatelé: Giacon, Virginia Mansanares, Melo Filho, Jo??o de Almeida, Andrade, Jean Carlos Silva Andrade, Marques, Maria Gorett dos Santos
Jazyk: portugalština
Rok vydání: 2021
Předmět:
Zdroj: Biblioteca Digital de Teses e Dissertações da UFAM
Universidade Federal do Amazonas (UFAM)
instacron:UFAM
Popis: Submitted by Ja??ne Galv??o (galvaojaine@gmail.com) on 2021-08-06T18:21:32Z No. of bitstreams: 4 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) disserta????o_ jaine.pdf: 3431480 bytes, checksum: df43caf234a78931ad64bce372f394fd (MD5) CartaEncaminhamentoTCC-TESE-DISSERTA????O.pdf: 455951 bytes, checksum: 586eb5bb0f74fb9efb6c8ec62f8e8bb3 (MD5) ATA DE DEFESA DA DISSERTA????O - Ja??ne K??ssia Lira Galv??o.pdf: 682622 bytes, checksum: cca4f67c2037efde737c45e02f10bcb6 (MD5) Approved for entry into archive by PPGCEM Ci??ncia e Engenharia de Materiais (ppgcem@ufam.edu.br) on 2021-08-06T18:24:58Z (GMT) No. of bitstreams: 4 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) disserta????o_ jaine.pdf: 3431480 bytes, checksum: df43caf234a78931ad64bce372f394fd (MD5) CartaEncaminhamentoTCC-TESE-DISSERTA????O.pdf: 455951 bytes, checksum: 586eb5bb0f74fb9efb6c8ec62f8e8bb3 (MD5) ATA DE DEFESA DA DISSERTA????O - Ja??ne K??ssia Lira Galv??o.pdf: 682622 bytes, checksum: cca4f67c2037efde737c45e02f10bcb6 (MD5) Rejected by Divis??o de Documenta????o/BC Biblioteca Central (ddbc@ufam.edu.br), reason: Na pista (palavras-chave), da ficha catalogr??fica: 1. Cimento-madeira. 2. Flex??o. 3. Inflamabilidade. 5. Tenacidade. (a primeira letra, de cada palavra, deve estar em caixa alta, o mesmo ocorre no caso de siglas). on 2021-08-06T18:45:30Z (GMT) Submitted by Ja??ne Galv??o (galvaojaine@gmail.com) on 2021-08-09T13:55:21Z No. of bitstreams: 4 CartaEncaminhamentoTCC-TESE-DISSERTA????O.pdf: 455951 bytes, checksum: 586eb5bb0f74fb9efb6c8ec62f8e8bb3 (MD5) ATA DE DEFESA DA DISSERTA????O - Ja??ne K??ssia Lira Galv??o.pdf: 682622 bytes, checksum: cca4f67c2037efde737c45e02f10bcb6 (MD5) disserta????o_ jaine.pdf: 3431491 bytes, checksum: 4de7736632ad7fba9d03abe3dcb8cb11 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Approved for entry into archive by PPGCEM Ci??ncia e Engenharia de Materiais (ppgcem@ufam.edu.br) on 2021-08-09T14:10:53Z (GMT) No. of bitstreams: 4 CartaEncaminhamentoTCC-TESE-DISSERTA????O.pdf: 455951 bytes, checksum: 586eb5bb0f74fb9efb6c8ec62f8e8bb3 (MD5) ATA DE DEFESA DA DISSERTA????O - Ja??ne K??ssia Lira Galv??o.pdf: 682622 bytes, checksum: cca4f67c2037efde737c45e02f10bcb6 (MD5) disserta????o_ jaine.pdf: 3431491 bytes, checksum: 4de7736632ad7fba9d03abe3dcb8cb11 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Rejected by Divis??o de Documenta????o/BC Biblioteca Central (ddbc@ufam.edu.br), reason: Disserta????es com restri????o de acesso (embargado) n??o devem ser depositadas pelo discente na BDTD/TEDE. Os arquivos devem ser encaminhados por e-mail. on 2021-08-09T18:18:46Z (GMT) Submitted by Ja??ne Galv??o (galvaojaine@gmail.com) on 2021-08-11T00:59:20Z No. of bitstreams: 3 CartaEncaminhamentoTCC-TESE-DISSERTA????O.pdf: 455951 bytes, checksum: 586eb5bb0f74fb9efb6c8ec62f8e8bb3 (MD5) ATA DE DEFESA DA DISSERTA????O - Ja??ne K??ssia Lira Galv??o.pdf: 682622 bytes, checksum: cca4f67c2037efde737c45e02f10bcb6 (MD5) disserta????o_ jaine.pdf: 3431491 bytes, checksum: 4de7736632ad7fba9d03abe3dcb8cb11 (MD5) Approved for entry into archive by PPGCEM Ci??ncia e Engenharia de Materiais (ppgcem@ufam.edu.br) on 2021-08-11T12:50:55Z (GMT) No. of bitstreams: 3 CartaEncaminhamentoTCC-TESE-DISSERTA????O.pdf: 455951 bytes, checksum: 586eb5bb0f74fb9efb6c8ec62f8e8bb3 (MD5) ATA DE DEFESA DA DISSERTA????O - Ja??ne K??ssia Lira Galv??o.pdf: 682622 bytes, checksum: cca4f67c2037efde737c45e02f10bcb6 (MD5) disserta????o_ jaine.pdf: 3431491 bytes, checksum: 4de7736632ad7fba9d03abe3dcb8cb11 (MD5) Approved for entry into archive by Divis??o de Documenta????o/BC Biblioteca Central (ddbc@ufam.edu.br) on 2021-08-11T16:30:13Z (GMT) No. of bitstreams: 3 CartaEncaminhamentoTCC-TESE-DISSERTA????O.pdf: 455951 bytes, checksum: 586eb5bb0f74fb9efb6c8ec62f8e8bb3 (MD5) ATA DE DEFESA DA DISSERTA????O - Ja??ne K??ssia Lira Galv??o.pdf: 682622 bytes, checksum: cca4f67c2037efde737c45e02f10bcb6 (MD5) disserta????o_ jaine.pdf: 3431491 bytes, checksum: 4de7736632ad7fba9d03abe3dcb8cb11 (MD5) Made available in DSpace on 2021-08-11T16:30:13Z (GMT). No. of bitstreams: 3 CartaEncaminhamentoTCC-TESE-DISSERTA????O.pdf: 455951 bytes, checksum: 586eb5bb0f74fb9efb6c8ec62f8e8bb3 (MD5) ATA DE DEFESA DA DISSERTA????O - Ja??ne K??ssia Lira Galv??o.pdf: 682622 bytes, checksum: cca4f67c2037efde737c45e02f10bcb6 (MD5) disserta????o_ jaine.pdf: 3431491 bytes, checksum: 4de7736632ad7fba9d03abe3dcb8cb11 (MD5) Previous issue date: 2021-07-15 FAPEAM - Funda????o de Amparo ?? Pesquisa do Estado do Amazonas This research presents the development and characterization of hybrid cementitious composites reinforced with mallow fibers and wood industry residues. To increase the durability of these materials, a matrix free of calcium hydroxide was used, through the partial replacement of Portland cement by 40% of industrial metakaolinite (MK), 15% of setting accelerator additive was added to the mixture (on the weight of the cement), in order to combat the delay and/or inhibition of the cement hardening time, caused by the amount of polysaccharides present in the wood. Short mallow fibers of 50 mm were used, randomly placed in the composite, 4% in fiber volume, and wood residues, with a 10% content, randomly dispersed in the composite, whose determination was carried out through a previous study. The composites were physically and mechanically characterized, after natural aging of 236 days, by means of 4 point bending tests, permeability of the composites, bulk density and fire propagation resistance, with the characterization of these composites after incineration through the test of 4 point bending. Fibers were characterized by scanning electron microscopy and wood residues were chemically characterized to determine the amount of chemical constituents of lignin, cellulose, hemicellulose and inorganic material. Composites with treatment (M1FM) had lower permeability than composites without treatment (M0FM), about 15.39% more permeable. The results of bending at 4 points indicated that the partial replacement of cement by MK influenced the resistance capacity when cracked, as the composites M1FM showed a cracking zone (figures 40 and 41) and the composites M0FM showed only the zone in the graphic behavior elastic. The composites with the addition of MK showed toughness resistance results higher than 18 MPa. The fire resistance test results indicated that the composites did not propagate flames instantly, however, there was a loss of 74.23% in the resistance of the lignocellulosic material, observed through the 4 point bending test. A presente pesquisa apresenta o desenvolvimento e caracteriza????o de comp??sitos ciment??cios hibrido refor??ados com fibras de malva e res??duos da ind??stria madeireira. Para aumentar a durabilidade destes mat??rias foi utilizado uma matriz livre de hidr??xido de c??lcio, por meio da substitui????o parcial do cimento Portland por 40% de Metacaulinita industrial (MK), foi adicionado ?? mistura 15% de aditivo acelerador de pega (sobre o peso do cimento), com intuito de combater o retardamento e/ou inibi????o do tempo de endurecimento do cimento, ocasionado pela quantidade de polissacar??deos presentes na madeira. Foi utilizado fibras curtas de malva de 50 mm dispostas aleatoriamente no comp??sito, 4% em volume de fibras, e res??duos de madeira, com teor de 10%, dispersos aleatoriamente no comp??sito, cuja determina????o foi realizada atrav??s de estudo pr??vio. Os comp??sitos foram caracterizados f??sico e mecanicamente, ap??s envelhecimento natural de 236 dias, por meio dos ensaios de flex??o em 4 pontos, permeabilidade dos comp??sitos, densidade aparente e resist??ncia a propaga????o do fogo, com a caracteriza????o desses comp??sitos ap??s a incinera????o atrav??s do ensaio de flex??o em 4 pontos. J?? as fibras foram caracterizadas pela microscopia eletr??nica de varredura e os res??duos de madeira foram caracterizados quimicamente para determinar a quantidade dos constituintes qu??micos de lignina, celulose, hemicelulose e material inorg??nico. Os comp??sitos com tratamento (M1FM) apresentaram menor permeabilidade que os comp??sitos sem tratamento (M0FM), cerca de 15,39% mais perme??veis. Os resultados de flex??o em 4 pontos indicaram que a substitui????o parcial do cimento por MK influenciou na capacidade de resist??ncia quando fissurado, visto que os comp??sitos M1FM apresentaram zona de fissura????o (figuras 40 e 41) e os comp??sitos M0FM demostram no comportamento gr??fico apenas a zona el??stica. Os comp??sitos com adi????o de MK apresentaram resultados de resist??ncia a tenacidade superiores de 18 MPa. Os resultados do teste de resist??ncia ao fogo indicaram que os comp??sitos n??o propagaram chamas instantaneamente, por??m, houve perda de 74,23% na resist??ncia do material lignocelul??sico, observada atrav??s do ensaio de flex??o em 4 pontos. O desenvolvimento de novos materiais que sejam sustent??veis, movimentem a economia ribeirinha e sejam funcionais para a constru????o civil
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