Efectos del cemento portland como estabilizante de subrasante de suelo arenoso de la calle Avianca – San Juan Bautista – Iquitos 2019
Date
2019-07-31
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Universidad Científica del Perú
Abstract
Este trabajo se realizó con la finalidad de evaluar los efectos del cemento portland tipo I en un suelo granular para mejorar las propiedades físicas y mecánicas de la subrasante de la calle Avianca, donde se usó proporciones de cemento 3, 5 y 7% del peso del suelo. Se
efectuaron ensayos de contenido de humedad, análisis granulométrico, proctor modificado
y CBR para evaluar los efectos del aditivo en el óptimo contenido de humedad (OCH), máxima densidad seca (MDS) e índice CBR. La clasificación fue A-2-4 (0) según AASHTO y SM según SUCS. El suelo no presenta variación en el IP por ser un suelo no plástico. El
OCH natural fue 11.57%, al adicionar hasta un 7% de cemento disminuyó a 8.78%. La MDS
natural alcanzó 1.821 gr/cm3 y al añadir hasta un 7% de cemento la MDS aumentó a 1.977
gr/cm3. El índice CBR natural fue de 33% al 95% MDS el cual cambió notablemente a 322%
añadiendo hasta un 7% de cemento. Conforme se añade las proporciones de cemento los
efectos son notables, obteniendo un índice CBR adecuado (33%) en estado natural el cual
corresponde a un suelo para subrasante excelente según el MTC (2014).
This research performed with the purpose of evaluate the effects of portland cement type I in a granular soil to improve the physical and mechanical properties of Avianca street's subgrade, the cement proportions were 3, 5 and 7% of soil weight. Moisture content tests, granulometric analysis, modified proctor and CBR were performed to evaluate the additive's effects on the optimum moisture content (OCH), maximum dry density (MDS) and CBR index. The classification was A-2-4 (0) according to AASHTO and SM according to SUCS. The soil hasn't plasticity index because is a no-plastic soil. The natural OCH was 11.57%, adding up to 7% cement decreased to 8.78%. The natural MDS reached 1,821 gr/cm3 and by adding up to 7% cement the MDS increased to 1,977 gr/cm3. The natural CBR index was 33% to 95% MDS, that changed notably to 322% adding up to 7% cement. Increasing the proportions of cement the effects are notable, obtaining an appropriate natural state CBR index (33%) that corresponds to an excellent subgrade soil according to MTC (2014).
This research performed with the purpose of evaluate the effects of portland cement type I in a granular soil to improve the physical and mechanical properties of Avianca street's subgrade, the cement proportions were 3, 5 and 7% of soil weight. Moisture content tests, granulometric analysis, modified proctor and CBR were performed to evaluate the additive's effects on the optimum moisture content (OCH), maximum dry density (MDS) and CBR index. The classification was A-2-4 (0) according to AASHTO and SM according to SUCS. The soil hasn't plasticity index because is a no-plastic soil. The natural OCH was 11.57%, adding up to 7% cement decreased to 8.78%. The natural MDS reached 1,821 gr/cm3 and by adding up to 7% cement the MDS increased to 1,977 gr/cm3. The natural CBR index was 33% to 95% MDS, that changed notably to 322% adding up to 7% cement. Increasing the proportions of cement the effects are notable, obtaining an appropriate natural state CBR index (33%) that corresponds to an excellent subgrade soil according to MTC (2014).
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Keywords
Suelo, Cemento, Subrasante, Óptimo contenido de humedad, Máxima densidad seca, CBR, Soil, Cement, Subgrade, Optimum moisture content, Maximun dry density, CBR
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