Influence of the structure on the collapse potential and shear strength of a residual soil in the semiarid region of Northeast Brazil
In the last decades, several engineering works have been developed in the Northeast of Brazil, a region marked by the occurrence of collapsible and expansive soils. This work aimed to characterize and study the behavior of two samples of residual soils collected in the municipality of Salgueiro-PE r...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2021-01-01
|
| Series: | MATEC Web of Conferences |
| Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2021/06/matecconf_PanAm-Unsat2021_01003.pdf |
| _version_ | 1831542731278647296 |
|---|---|
| author | Santos Valteson da Silva de Medeiros Allan B.Silva da Silva Romário S.Amaro Santos Olava F. de Freitas Neto Osvaldo Lira Bruna Silveira |
| author_facet | Santos Valteson da Silva de Medeiros Allan B.Silva da Silva Romário S.Amaro Santos Olava F. de Freitas Neto Osvaldo Lira Bruna Silveira |
| author_sort | Santos Valteson da Silva |
| collection | DOAJ |
| description | In the last decades, several engineering works have been developed in the Northeast of Brazil, a region marked by the occurrence of collapsible and expansive soils. This work aimed to characterize and study the behavior of two samples of residual soils collected in the municipality of Salgueiro-PE regarding their collapse potentials and shear strength parameters, in natural and disturbed conditions, evaluating the influence of the applied vertical stresses and the structural arrangement in these properties. The results obtained showed that the two samples analyzed show collapsible behavior, however, the observed potential for collapse was lower after the original structure arrangement was undone. From the direct shear strength tests, the strength parameters of the two soils were obtained, which pointed effective friction angle close to 30° and cohesive intercept close to 0 kPa. The destructuring of the samples did not cause a considerable variation in these parameters. Thus, it was possible to conclude that for these samples the microstructure has a predominant influence on the occurrence of collapsibility, but does not have the same relevance on the shear strength, such that the material’s destructuring can be considered as an effective measure to reduce the potential collapse. |
| first_indexed | 2024-12-17T00:39:04Z |
| format | Article |
| id | doaj.art-3257fd2374494f3b89cb64d9b6e271aa |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-17T00:39:04Z |
| publishDate | 2021-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-3257fd2374494f3b89cb64d9b6e271aa2022-12-21T22:10:04ZengEDP SciencesMATEC Web of Conferences2261-236X2021-01-013370100310.1051/matecconf/202133701003matecconf_PanAm-Unsat2021_01003Influence of the structure on the collapse potential and shear strength of a residual soil in the semiarid region of Northeast BrazilSantos Valteson da Silva0de Medeiros Allan B.Silva1da Silva Romário S.Amaro2Santos Olava F.3de Freitas Neto Osvaldo4Lira Bruna Silveira5Federal University of Rio Grande do NorteFederal University of Rio Grande do NorteFederal University of Rio Grande do NorteFederal University of Rio Grande do NorteFederal University of Rio Grande do NorteFederal University of Campina GrandeIn the last decades, several engineering works have been developed in the Northeast of Brazil, a region marked by the occurrence of collapsible and expansive soils. This work aimed to characterize and study the behavior of two samples of residual soils collected in the municipality of Salgueiro-PE regarding their collapse potentials and shear strength parameters, in natural and disturbed conditions, evaluating the influence of the applied vertical stresses and the structural arrangement in these properties. The results obtained showed that the two samples analyzed show collapsible behavior, however, the observed potential for collapse was lower after the original structure arrangement was undone. From the direct shear strength tests, the strength parameters of the two soils were obtained, which pointed effective friction angle close to 30° and cohesive intercept close to 0 kPa. The destructuring of the samples did not cause a considerable variation in these parameters. Thus, it was possible to conclude that for these samples the microstructure has a predominant influence on the occurrence of collapsibility, but does not have the same relevance on the shear strength, such that the material’s destructuring can be considered as an effective measure to reduce the potential collapse.https://www.matec-conferences.org/articles/matecconf/pdf/2021/06/matecconf_PanAm-Unsat2021_01003.pdf |
| spellingShingle | Santos Valteson da Silva de Medeiros Allan B.Silva da Silva Romário S.Amaro Santos Olava F. de Freitas Neto Osvaldo Lira Bruna Silveira Influence of the structure on the collapse potential and shear strength of a residual soil in the semiarid region of Northeast Brazil MATEC Web of Conferences |
| title | Influence of the structure on the collapse potential and shear strength of a residual soil in the semiarid region of Northeast Brazil |
| title_full | Influence of the structure on the collapse potential and shear strength of a residual soil in the semiarid region of Northeast Brazil |
| title_fullStr | Influence of the structure on the collapse potential and shear strength of a residual soil in the semiarid region of Northeast Brazil |
| title_full_unstemmed | Influence of the structure on the collapse potential and shear strength of a residual soil in the semiarid region of Northeast Brazil |
| title_short | Influence of the structure on the collapse potential and shear strength of a residual soil in the semiarid region of Northeast Brazil |
| title_sort | influence of the structure on the collapse potential and shear strength of a residual soil in the semiarid region of northeast brazil |
| url | https://www.matec-conferences.org/articles/matecconf/pdf/2021/06/matecconf_PanAm-Unsat2021_01003.pdf |
| work_keys_str_mv | AT santosvaltesondasilva influenceofthestructureonthecollapsepotentialandshearstrengthofaresidualsoilinthesemiaridregionofnortheastbrazil AT demedeirosallanbsilva influenceofthestructureonthecollapsepotentialandshearstrengthofaresidualsoilinthesemiaridregionofnortheastbrazil AT dasilvaromariosamaro influenceofthestructureonthecollapsepotentialandshearstrengthofaresidualsoilinthesemiaridregionofnortheastbrazil AT santosolavaf influenceofthestructureonthecollapsepotentialandshearstrengthofaresidualsoilinthesemiaridregionofnortheastbrazil AT defreitasnetoosvaldo influenceofthestructureonthecollapsepotentialandshearstrengthofaresidualsoilinthesemiaridregionofnortheastbrazil AT lirabrunasilveira influenceofthestructureonthecollapsepotentialandshearstrengthofaresidualsoilinthesemiaridregionofnortheastbrazil |