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Registro Completo |
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Biblioteca(s): |
Embrapa Agroindústria Tropical; Embrapa Amazônia Ocidental. |
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Data corrente: |
03/11/2020 |
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Data da última atualização: |
07/01/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CYSNE, A. Q.; LOPES, R.; CUNHA, R. N. V. da. |
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Afiliação: |
ALEX QUEIROZ CYSNE, CNPAT; RICARDO LOPES, CPAA; RAIMUNDO NONATO VIEIRA DA CUNHA, CPAA. |
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Título: |
Tratamento sanitário e qualidade fisiológica de sementes de palma-de-óleo recém-colhidas e armazenadas submetidas a diferentes fungicidas. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Agrotrópica, v. 32, n. 2, p. 119-126, 2020. |
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DOI: |
https://doi.org/10.21757/0103-3816.2020v32n2p119-126 |
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Idioma: |
Português |
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Conteúdo: |
A qualidade sanitária e a qualidade fisiológica de sementes de Palma-de-Óleo é essencial para o estabelecimento de áreas de plantio. Assim, objetivou-se testar diferentes fungicidas quanto ao seu efeito sobre a população de fungos presente em sementes de Palma-de-Óleo, recém colhidas e armazenadas por seis meses. |
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Thesagro: |
Elaeis Guineensis; Fungo. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/219818/1/ART20147.pdf
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Marc: |
LEADER 00946naa a2200181 a 4500
001 2128910
005 2021-01-07
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.21757/0103-3816.2020v32n2p119-126$2DOI
100 1 $aCYSNE, A. Q.
245 $aTratamento sanitário e qualidade fisiológica de sementes de palma-de-óleo recém-colhidas e armazenadas submetidas a diferentes fungicidas.$h[electronic resource]
260 $c2020
520 $aA qualidade sanitária e a qualidade fisiológica de sementes de Palma-de-Óleo é essencial para o estabelecimento de áreas de plantio. Assim, objetivou-se testar diferentes fungicidas quanto ao seu efeito sobre a população de fungos presente em sementes de Palma-de-Óleo, recém colhidas e armazenadas por seis meses.
650 $aElaeis Guineensis
650 $aFungo
700 1 $aLOPES, R.
700 1 $aCUNHA, R. N. V. da
773 $tAgrotrópica$gv. 32, n. 2, p. 119-126, 2020.
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Registro original: |
Embrapa Agroindústria Tropical (CNPAT) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
26/09/2023 |
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Data da última atualização: |
15/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
TERRA, I. C. C.; BATISTA, F. G.; SILVA, D. W.; SCATOLINO, M. V.; ALVES JÚNIOR, F. T.; MARTINS, M. A.; MENDES, L. M. |
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Afiliação: |
Department of Forest Science, Federal University of Lavras (UFLA); Department of Forest Science, Federal University of Lavras (UFLA); Department of Production Engineering, State University of Amapá (UEAP); Graduate Program in Development and Environment, Federal University of the Semiarid Region (UFERSA); Department of Production Engineering, State University of Amapá (UEAP); MARIA ALICE MARTINS, CNPDIA; Department of Forest Science, Federal University of Lavras (UFLA). |
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Título: |
Mining waste and coconut fibers as an eco-friendly reinforcement for the production of concrete blocks. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Environmental Science and Pollution Research, v. 30, 2023. 62641?62652 |
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Páginas: |
62641-62652 |
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DOI: |
https://doi.org/10.1007/s11356-023-26493-5 |
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Idioma: |
Inglês |
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Conteúdo: |
Using mineral and agro-industrial wastes associated with the cement matrix can add value and guarantee suitable properties for reinforced composites. This research aimed to evaluate the effect of the incorporation of quartzite and coconut fibers on masonry blocks' physical, mechanical, and thermal properties. Quartzite was evaluated replacing 0%, 25%, 50%, 75%, and 100% of the sand, whereas the coconut fibers were added in a proportion of 2.5% of the volume of gravel. Quartzite residues were analyzed regarding their granulometry, chemical composition, and pozzolanicity. The block initial formulation (control) was: 8.2% cement, 45.9% sand, and 45.9% gravel. The cement was cured at room temperature for 28 days. Subsequently, the blocks were subjected to the characterization of physical, mechanical, and thermal properties. Coconut fibers presented a low percentage of extractives, with a low inhibition index (1.93%), reducing their effect on cement hardening. The increase in the content of quartzite incorporated provided a reduction in bulk density and an increase in porosity (from 11.7 to 16.0%) and water absorption after 24 h (from 7.0 to 8.5%). The compressive strength was reduced from 50% with the insertion of the quartzite. The quartzite and coconut fibers reduced the concrete's thermal conductivity, providing essential reflections for the performance of the blocks in terms of thermal comfort in built environments. Further, incorporating these materials provided the potential to obtain blocks with characteristics of resistance and offering possible thermal comfort, besides contributing as an option for a destination for these mineral and agro-industrial wastes. MenosUsing mineral and agro-industrial wastes associated with the cement matrix can add value and guarantee suitable properties for reinforced composites. This research aimed to evaluate the effect of the incorporation of quartzite and coconut fibers on masonry blocks' physical, mechanical, and thermal properties. Quartzite was evaluated replacing 0%, 25%, 50%, 75%, and 100% of the sand, whereas the coconut fibers were added in a proportion of 2.5% of the volume of gravel. Quartzite residues were analyzed regarding their granulometry, chemical composition, and pozzolanicity. The block initial formulation (control) was: 8.2% cement, 45.9% sand, and 45.9% gravel. The cement was cured at room temperature for 28 days. Subsequently, the blocks were subjected to the characterization of physical, mechanical, and thermal properties. Coconut fibers presented a low percentage of extractives, with a low inhibition index (1.93%), reducing their effect on cement hardening. The increase in the content of quartzite incorporated provided a reduction in bulk density and an increase in porosity (from 11.7 to 16.0%) and water absorption after 24 h (from 7.0 to 8.5%). The compressive strength was reduced from 50% with the insertion of the quartzite. The quartzite and coconut fibers reduced the concrete's thermal conductivity, providing essential reflections for the performance of the blocks in terms of thermal comfort in built environments. Further, incorporating these materials provided the potenti... Mostrar Tudo |
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Palavras-Chave: |
Block characterization; Composite; Lignocellulosic fibers; Mining wastes; Quartzite. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02555naa a2200277 a 4500
001 2156900
005 2024-01-15
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s11356-023-26493-5$2DOI
100 1 $aTERRA, I. C. C.
245 $aMining waste and coconut fibers as an eco-friendly reinforcement for the production of concrete blocks.$h[electronic resource]
260 $c2023
300 $a62641-62652
520 $aUsing mineral and agro-industrial wastes associated with the cement matrix can add value and guarantee suitable properties for reinforced composites. This research aimed to evaluate the effect of the incorporation of quartzite and coconut fibers on masonry blocks' physical, mechanical, and thermal properties. Quartzite was evaluated replacing 0%, 25%, 50%, 75%, and 100% of the sand, whereas the coconut fibers were added in a proportion of 2.5% of the volume of gravel. Quartzite residues were analyzed regarding their granulometry, chemical composition, and pozzolanicity. The block initial formulation (control) was: 8.2% cement, 45.9% sand, and 45.9% gravel. The cement was cured at room temperature for 28 days. Subsequently, the blocks were subjected to the characterization of physical, mechanical, and thermal properties. Coconut fibers presented a low percentage of extractives, with a low inhibition index (1.93%), reducing their effect on cement hardening. The increase in the content of quartzite incorporated provided a reduction in bulk density and an increase in porosity (from 11.7 to 16.0%) and water absorption after 24 h (from 7.0 to 8.5%). The compressive strength was reduced from 50% with the insertion of the quartzite. The quartzite and coconut fibers reduced the concrete's thermal conductivity, providing essential reflections for the performance of the blocks in terms of thermal comfort in built environments. Further, incorporating these materials provided the potential to obtain blocks with characteristics of resistance and offering possible thermal comfort, besides contributing as an option for a destination for these mineral and agro-industrial wastes.
653 $aBlock characterization
653 $aComposite
653 $aLignocellulosic fibers
653 $aMining wastes
653 $aQuartzite
700 1 $aBATISTA, F. G.
700 1 $aSILVA, D. W.
700 1 $aSCATOLINO, M. V.
700 1 $aALVES JÚNIOR, F. T.
700 1 $aMARTINS, M. A.
700 1 $aMENDES, L. M.
773 $tEnvironmental Science and Pollution Research$gv. 30, 2023. 62641?62652
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Embrapa Instrumentação (CNPDIA) |
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