ResumenEl objetivo del presente trabajo fue evaluar la resistencia de suelos orgánicos del noreste argentino, una vez cumplido el proceso de estabilización con distintas resinas. Se realizaron ensayos de resistencia triaxial sobre probetas de suelo orgánico, natural y estabilizado. El tratamiento se materializó incorporando al suelo resinas en las que intervinieron productos obtenidos de la cadena de fabricación del tanino de Quebracho Colorado, un aldehído y agua. La concentración de la resina fue variable, como también la proporción con respecto al peso seco del suelo en que se la agregaba y los días de curado. Los ensayos triaxiales permitieron el trazado de las líneas de resistencia intrínseca para evaluar la acción del estabilizante. Los resultados indicaron un incremento en la resistencia mecánica del suelo estabilizado, pudiéndose identificar la resina que indujo a un mejor efecto sobre el suelo natural, permitiendo extender las posibilidades de aplicación del material tratado. Palabras clave: suelo, estabilización, resinas, tanino, resistencia Strength Behavior of Organic Soils Stabilized with Tannin AbstractThe aim of this work was evaluating the strength of organic soils in northeastern region of Argentina after completing the stabilization process with different types of resins. Several triaxial essays on probes of organic, natural and stabilized soils, were carried out. Treatment was materialized by adding resins to soil, in wich products obtained in the chain of production of tannin from "Quebracho Colorado", an aldehyde and water took part. Concentration of resin was variable, as well as rate of dry weight of soil in wich it was added and the curing time. Tri -axial tests allowed drawing of intrinsic strength lines in order to evaluate the action of stabilizer. Results indicated a rise of mechanical strength of stabilized soil, allowing identification of resin wich induced a better effect on natural soil and to extend possibilities of application of treated material.
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