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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
26/10/2018 |
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Data da última atualização: |
14/12/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
BARBOSA, G. M. N.; ASSIS, I. R. de; KER, J. C.; MARQUES, E. A. G.; CUNHA, T. J. F.; SOUZA, L. da S.; VARGAS SOBRINHO, V. |
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Afiliação: |
GUSTAVO MAGALHÃES NUNES BARBOSA, Universidade Federal de Viçosa; IGOR RODRIGUES DE ASSIS, Universidade Federal de Viçosa; JOÃO CARLOS KER, Universidade Federal de Viçosa; EDUARDO ANTÔNIO GOMES MARQUES, Universidade Federal de Viçosa; TONY JARBAS FERREIRA CUNHA, CPATSA; LUCIANO DA SILVA SOUZA, Universidade Federal do Recôncavo Baiano; ULLISSES VARGAS SOBRINHO, Universidade Federal de Viçosa. |
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Título: |
Geotechnical characterization of Vertisols from Bahia State, Brazil. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
In: WORLD CONGRESS OF SOIL SCIENCE, 21., 2018, Rio de Janeiro. Soil science: beyond food and fuel: proceedings. Rio de Janeiro: SBCS, 2018. |
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Idioma: |
Inglês |
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Conteúdo: |
Despite the existence of vertic soils with predominance of kaolinite is reported around the world, there are few studies shown the influence of this clay mineral in their geotechnical characteristics. The work aimed to perform a geotechnical characterization of Vertisols from Bahia, Brazil, besides understanding the influence of physical, chemical and mineralogical properties on the geotechnical behavior. Three Vertisols were collected in Juazeiro city, in a semi-arid region, one kaolinitic Vertisol and two smectite Vertisols. Other three Vertsols were collected in Recôncavo region, all presented clay mineralogy with codominance of smectite and kaolinite (Sm-K). A geotechnical characterization was carried out in their diagnostic horizons, determining properties such as granulometric curve, clay activity, linear expansion coefficient, compaction capacity, cohesion (c?), and internal friction angle (ϕ) of saturated soils. We observed that the clay content was the attribute that most influenced the geotechnical characteristics. All soils showed expansion potential above 0.01, considered as very high. The kaolinitic Vertisol showed the lowest clay activity. However, the clay content of 68% contributed to this soil to present an expansion potential similar to the smectite Vertisol with clay content of 35%. The major values of soil compaction were observed for the kaolinitic Vertisol, which presented greater reduction of void ratio and higher density as a function of moisture increase. For this soil, the optimal moisture content (OMC) and maximum dry density (MDD) were 22% and 1.65 g cm-3, respectively. The other soils presented OMC between 18-41% and MDD between 1.75-1.24 g cm-3. These smectite-soils, MDD decreased with increasing of OMC. All soils had low c? values, which is expected for high clay content soils. The c? values increased with increasing of kaolinite and decreased with increasing of clay content. The kaolinite Vertisol showed c? of 0.19 kgf cm-2. The c? values to Sm-K Vertisols ranged between 0.05-0.11 kgf cm-2. As for smectite-soil, c? values ranged between 0.02-0.03 kgf cm-2. Low ϕ values were observed for all soils, which indicates low shear resistance. In its turn, ϕ was more influenced by granulometry, in which higher levels of sand and gravel provided higher ϕ, independently of the type of clay. Vertisols with different mineralogy present different geotechnical characteristics. Keywords: Smectite; kaolinite; expansive soils MenosDespite the existence of vertic soils with predominance of kaolinite is reported around the world, there are few studies shown the influence of this clay mineral in their geotechnical characteristics. The work aimed to perform a geotechnical characterization of Vertisols from Bahia, Brazil, besides understanding the influence of physical, chemical and mineralogical properties on the geotechnical behavior. Three Vertisols were collected in Juazeiro city, in a semi-arid region, one kaolinitic Vertisol and two smectite Vertisols. Other three Vertsols were collected in Recôncavo region, all presented clay mineralogy with codominance of smectite and kaolinite (Sm-K). A geotechnical characterization was carried out in their diagnostic horizons, determining properties such as granulometric curve, clay activity, linear expansion coefficient, compaction capacity, cohesion (c?), and internal friction angle (ϕ) of saturated soils. We observed that the clay content was the attribute that most influenced the geotechnical characteristics. All soils showed expansion potential above 0.01, considered as very high. The kaolinitic Vertisol showed the lowest clay activity. However, the clay content of 68% contributed to this soil to present an expansion potential similar to the smectite Vertisol with clay content of 35%. The major values of soil compaction were observed for the kaolinitic Vertisol, which presented greater reduction of void ratio and higher density as a function of moisture... Mostrar Tudo |
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Palavras-Chave: |
Bahia; Caracterização geotécnica; Caulinite; Solos expansivos. |
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Thesagro: |
Solo; Vertissolo. |
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Thesaurus Nal: |
Smectite; Soil. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/185188/1/Tony.pdf
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Marc: |
LEADER 03353nam a2200277 a 4500
001 2098279
005 2023-12-14
008 2018 bl uuuu u00u1 u #d
100 1 $aBARBOSA, G. M. N.
245 $aGeotechnical characterization of Vertisols from Bahia State, Brazil.$h[electronic resource]
260 $aIn: WORLD CONGRESS OF SOIL SCIENCE, 21., 2018, Rio de Janeiro. Soil science: beyond food and fuel: proceedings. Rio de Janeiro: SBCS$c2018
520 $aDespite the existence of vertic soils with predominance of kaolinite is reported around the world, there are few studies shown the influence of this clay mineral in their geotechnical characteristics. The work aimed to perform a geotechnical characterization of Vertisols from Bahia, Brazil, besides understanding the influence of physical, chemical and mineralogical properties on the geotechnical behavior. Three Vertisols were collected in Juazeiro city, in a semi-arid region, one kaolinitic Vertisol and two smectite Vertisols. Other three Vertsols were collected in Recôncavo region, all presented clay mineralogy with codominance of smectite and kaolinite (Sm-K). A geotechnical characterization was carried out in their diagnostic horizons, determining properties such as granulometric curve, clay activity, linear expansion coefficient, compaction capacity, cohesion (c?), and internal friction angle (ϕ) of saturated soils. We observed that the clay content was the attribute that most influenced the geotechnical characteristics. All soils showed expansion potential above 0.01, considered as very high. The kaolinitic Vertisol showed the lowest clay activity. However, the clay content of 68% contributed to this soil to present an expansion potential similar to the smectite Vertisol with clay content of 35%. The major values of soil compaction were observed for the kaolinitic Vertisol, which presented greater reduction of void ratio and higher density as a function of moisture increase. For this soil, the optimal moisture content (OMC) and maximum dry density (MDD) were 22% and 1.65 g cm-3, respectively. The other soils presented OMC between 18-41% and MDD between 1.75-1.24 g cm-3. These smectite-soils, MDD decreased with increasing of OMC. All soils had low c? values, which is expected for high clay content soils. The c? values increased with increasing of kaolinite and decreased with increasing of clay content. The kaolinite Vertisol showed c? of 0.19 kgf cm-2. The c? values to Sm-K Vertisols ranged between 0.05-0.11 kgf cm-2. As for smectite-soil, c? values ranged between 0.02-0.03 kgf cm-2. Low ϕ values were observed for all soils, which indicates low shear resistance. In its turn, ϕ was more influenced by granulometry, in which higher levels of sand and gravel provided higher ϕ, independently of the type of clay. Vertisols with different mineralogy present different geotechnical characteristics. Keywords: Smectite; kaolinite; expansive soils
650 $aSmectite
650 $aSoil
650 $aSolo
650 $aVertissolo
653 $aBahia
653 $aCaracterização geotécnica
653 $aCaulinite
653 $aSolos expansivos
700 1 $aASSIS, I. R. de
700 1 $aKER, J. C.
700 1 $aMARQUES, E. A. G.
700 1 $aCUNHA, T. J. F.
700 1 $aSOUZA, L. da S.
700 1 $aVARGAS SOBRINHO, V.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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| Registros recuperados : 63 | |
| 3. |  | JACOMINE, P. K. T.; KER, J. C. Estudo expedito de solos do trecho Cuiabá-Aripuanã, MT, para fins de correlação e classificação. Rio de Janeiro: EMBRAPA-CNPS, 1998. 40 p. (EMBRAPA-CNPS. Documentos, 4). Contrato Fundação Cândido Rondon / EMBRAPA SNLCS; Autoria: Paulo Klinger Tito Jacomine, João Carlos Ker, Lelis Nogueira Gonzaga, João B. Pereira Leite Sobrinho, Tereza Neide N. Vasconcelos, Sério Lins de Melo, Gonçalo Leite Moreira, Luiz...| Biblioteca(s): Embrapa Solos. |
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| 6. | | OLIVEIRA, C. V.; DUARTE, M. N.; KER, J. C.; CURI, N.; FONTES, L. E. F. Atributos micromorfológicos de solos do Projeto Jaíba, Norte de Minas Gerais. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 27., 1999, Brasília, DF. Resumos [...]. Planaltina, DF: Embrapa Cerrados, 1999. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Solos. |
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| 7. | | OLIVEIRA, C. V.; KER, J. C.; DUARTE, M. N.; CURI, N.; FONTES, L. E. F. Atributos micromorfológicos de solos do Projeto Jaíba, Norte de Minas Gerais. Revista Brasileira de Ciência do Solo, v. 24, n. 1, p. 117-128, mar. 2000.| Tipo: Artigo em Periódico Indexado |
| Biblioteca(s): Embrapa Solos. |
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| 8. | | CURI, N.; OLIVEIRA, C. V.; KER, J. C.; FONTES, L. E. F.; DUARTE, M. N. Caracterização de concreções ferro manganosas em solos do Projeto Jaíba, Norte de Minas Gerais. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 27., 1999, Brasília, DF. Resumos [...]. Planaltina, DF: Embrapa Cerrados, 1999. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Solos. |
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| 11. | | KER, J. C.; MOTTA, P. E. F. da; OLIVEIRA, V. A. de. Levantamentos pedológicos e a evolução do conhecimento dos solos no Brasil. In: CURI, N.; KER, J. C.; NOVAIS, R. F.; VIDAL-TORRADO, P.; SCHAEFER, C. E. G. R. (Ed.). Pedologia: solos dos biomas brasileiros. Viçosa, MG: Sociedade Brasileira de Ciência do Solo, 2017. cap. 1, p. 1-45.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Solos. |
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| 12. | | CORRÊA, M. M.; KER, J. C.; ARAUJO FILHO, J. C. de; CAMÊLO, D. de L. Formas de ferro, silício e, ou, alumínio na gênese de fragipãs e horizontes coesos dos Tabuleiros Costeiros. Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 39, n. 4, p. 940-949, 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Solos. |
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| 15. | | CORRÊA, M. M.; MOREAU, A. M. S. dos S.; KER, J. C.; CARVALHO FILHO, A. de; NAIME, U. J. Avaliação de critérios de classificação de Espodossolos do Pantanal Matogrossense e de Tabuleiros Costeiros relacionados ao Grupo Barreiras. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 27., 1999, Brasília, DF. Resumos [...]. Planaltina, DF: Embrapa Cerrados, 1999. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Solos. |
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| 17. | | SANTOS, F. C.; NEVES, J. C. L.; NOVAIS, R. F.; FOLONI, J. M.; ZANCANARO, L.; KER, J. C. Calagem para soja em solos arenosos de cerrado. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 31., 2007, Gramado. Conquistas e desafios da ciência do solo brasileira: anais. Porto Alegre: SBCS, 2007. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Cerrados. |
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| 18. | | SANTOS, A. R dos; FONTES, M. P. F.; ALVAREZ, VENEGAS, V. H.; RESENDE, M.; KER, J. C.; COSTA, L. M. Caracterizacao mineralogica, potencial de reserva e sustentabilidade agricola de sitios florestais de Eucalyptus grandis do Vale do Rio Doce - MG. In: REUNIAO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRICAO DE PLANTAS, 22., 1996, Manaus, AM. Resumos expandidos. Manaus: SBCS/UA/EMBRAPA-CPAA/INPA, 1996 p.76-77.| Biblioteca(s): Embrapa Cerrados. |
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| 19. | | LIMA, H. N.; BENITES, V. de M.; SCHAEFER, C. E. G. R.; MELLO, J. W. V.; KER, J. C. Caracterização de ácidos húmicos extraídos de terra preta de índio. In: ENCONTRO BRASILEIRO DE SUBSTÂNCIAS HÚMICAS, 4., 2001, Viçosa, MG. Resumos de palestras e trabalhos apresentados. Viçosa, MG: UFV, Departamento de Solos, 2001. p. 155-156.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Solos. |
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| 20. | | ARAÚJO, E. A.; KER, J. C.; WADT, P. G. S.; BEIRIGO, R. M.; OLIVEIRA, E. K.; RIBEIRO, M. F. Propriedades físicas e químicas de solos associadas à morte de pastagens no estado do Acre. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 27.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 11.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 9.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 6., 2006, Bonito. A busca das raízes: anais. Dourados: Embrapa Agropecuária Oeste, 2006. 4 p. 1-CD ROM. (Embrapa Agropecuária Oeste. Documentos, 82).| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| Registros recuperados : 63 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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