The Effect of Roots on the Shear Strength of Texturally Distinct Soils
Maffra, Charles Sousa, Rita Sutili, Fabrício Pinheiro, Rinaldo
The Effect of Roots on the Shear Strength of Texturally Distinct Soils
Publicação on-line; 45 ref.; 1 table; 6 illus.; Summary (En)
ABSTRACT
The aim of this work was to evaluate the roots influence on the shear strength of a clay soil and
a sandy soil. Soil samples with and without roots were collected from experimental plantations
of Atlantic Forest native species. The soil samples were then physically characterized and their
shear strength tested in a laboratory. The results indicated that the soils’ shear strength and
compressive strength were increased by the roots. In the sandy soil, roots influenced the shear
strength by increasing the cohesion value (234%), while in the clay soil they influenced the shear
strength mainly by increasing the cohesion value (32%) and the internal friction angle (14.4%).
This information can ultimately be part of the technical justifications that ratify the use of plants
in erosion control and slope stabilization works.
Keywords: soil bioengineering, geotechnical engineering, rheophyte, soil-root
interaction, slope stabilization.
SOLO
RAIZ
ENGENHARIA
TEXTURA DO SOLO
The Effect of Roots on the Shear Strength of Texturally Distinct Soils
Publicação on-line; 45 ref.; 1 table; 6 illus.; Summary (En)
ABSTRACT
The aim of this work was to evaluate the roots influence on the shear strength of a clay soil and
a sandy soil. Soil samples with and without roots were collected from experimental plantations
of Atlantic Forest native species. The soil samples were then physically characterized and their
shear strength tested in a laboratory. The results indicated that the soils’ shear strength and
compressive strength were increased by the roots. In the sandy soil, roots influenced the shear
strength by increasing the cohesion value (234%), while in the clay soil they influenced the shear
strength mainly by increasing the cohesion value (32%) and the internal friction angle (14.4%).
This information can ultimately be part of the technical justifications that ratify the use of plants
in erosion control and slope stabilization works.
Keywords: soil bioengineering, geotechnical engineering, rheophyte, soil-root
interaction, slope stabilization.
SOLO
RAIZ
ENGENHARIA
TEXTURA DO SOLO
BINAGRI