Publicado

2015-07-01

Evaluation by different methodologies of collapse potential of some residual soils in Aburrá and San Nicolás Valleys

Evaluación por diferentes métodos del potencial de colapso de algunos suelos residuales en los Valles de Aburrá y San Nicolás

Palabras clave:

Collapsible soils, duple-oedometer test, Collapse Potential (en)
potencial de colapso, suelos residuales, ensayo de doble edómetro (es)

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Autores/as

  • Yamile Valencia González Universidad Nacional de Colombia - Sede Medellín - Facultad de Minas
  • Jorge Andrés Yepes-García Universidad Nacional de Colombia - Sede Medellín - Facultad de Minas
  • Oscar Echeverri-Ramírez Universidad Nacional de Colombia - Sede Medellín - Facultad de Minas
The process of precipitated variation of a soil volume when subjected to increase in stresses which withstand and/or the degree of saturation, it's also known as collapse. Collapse Potential of soils can be determined from correlations derivative of the material properties index. That's why in this work, it was evaluated using different methods the Collapse Potential of soils for ten specimens of tropical residual soils coming from five different points in Aburrá and San Nicolás Valleys, and the results were compared with the index collapse obtained using the duple-oedometer test. It was achieved to establish which of the procedures is closer to the traditional test results, and thereby obtain an approximation to the potential collapse using easy implementation methodologies with significant costs savings and rehearsal times, without loss of reliability evaluation.
El proceso de variación precipitada del volumen de un suelo cuando se ve sometido a un aumento en las tensiones que soporta y/o cuando se satura, se conoce como colapso. El potencial de colapso de los suelos se puede determinar a partir de correlaciones derivadas de las propiedades índice de los materiales. Se evaluó por diferentes métodos el potencial de colapso en diez muestras de suelos residuales tropicales provenientes de cinco puntos diferentes de los valles de Aburrá y San Nicolás, y se compararon los resultados con el índice de colapso obtenido a partir del ensayo de doble edómetro, logrando establecer cuál de los procedimientos se acerca más a los resultados del ensayo tradicional y de esta manera obtener una aproximación al potencial de colapso a partir de metodologías de fácil ejecución con ahorros significativos en tiempos de ensayo y costos asociados, sin pérdida de confiabilidad en la evaluación.

Referencias

Jennings, J.-E. and Knight, K., A guide to construction on or with materials exhibiting additional settlement dur to "collapse of grain structure", Regional Conference for African on Soil Mechanics and Foundation Engineering, Durban, 1975. pp. 99-105.

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ASTM D2435/D2435M - 11 Standard test methods for one-dimensional consolidation properties of soils using incremental loading. [Online]. [date of reference September 25th of 2014]. Available at: www.astm.org

González, H., Geología del Departamento de Antioquia. Escala 1:400.000. Medellín, INGEOMINAS, 1999.

ASTM D2216 - 10 Standard test methods for laboratory determination of water (Moisture) content of soil and rock by mass [Online]. [date of reference September 25th of 2014]. Available at: www.astm.org

ASTM D854 - 14 Standard test methods for specific gravity of soil solids by water pycnometer [Online]. [date of reference September 25th of 2014]. Available from: www.astm.org

ASTM D4318 - 10e1 Standard test methods for liquid limit, plastic limit, and plasticity index of soils [Online]. [date of reference September 25th of 2014]. Available from: www.astm.org

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