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Revista Árvore

versión impresa ISSN 0100-6762

Resumen

MACHADO, Carlos Cardoso  y  PORTUGAL, Carla Ribeiro Machado e. Mechanical behavior of the granulometrics mixtures of soil-grits. Rev. Árvore [online]. 2012, vol.36, n.3, pp.519-526. ISSN 0100-6762.  http://dx.doi.org/10.1590/S0100-67622012000300014.

The objective of this experiment was to analyze the influence of size distribution of the industrial waste, named grits, on the optimum compaction parameters, mechanical strength and expansion of two typical soils in the North Forest Zone of Minas Gerais State, Brazil, for forest road applications. Contents of waste used in the mixtures were 4, 8, 12, 16, 20, 24 and 28 % regarding soils dry mass, working with compacting units of intermediary and modified Proctor trials. The assessed waste fractions were those equivalent to clay and silt (Ø < 0.074 mm), sand (0.074 < Ø < 2 mm), and gravel (2 mm < Ø < 76 mm), considering the size scale adopted by DNIT (DNIT, 1996). Bearing capacity and expansion of soils and mixtures were evaluated by using the CBR test. Results showed that the fine fraction of the grits is the one which contributes the most for gains in the mechanical strength, evidencing its importance in the reactivity of the mixtures, and gravel is that influences the least the gain of bearing capacity of the soils.

Palabras clave : Soil stabilization; Industrial grits waste; Grain size distribution; Soil-grits reactivity; Forest roads.

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