Bioestabilización de suelos e interacción con los procesos de compactación para la producción de estructuras ingenieriles de tierra
DOI:
https://doi.org/10.3989/mc.2021.00221Palabras clave:
Distribución del tamaño de partícula, Mineralizador, Cinética, Resistencia a compresiónResumen
Se estudió la interacción entre la precipitación de carbonato de calcio inducida por bacterias (MICP) y los procesos de compactación para estabilizar suelos naturales para producir estructuras de tierra. Se realizaron ensayos iniciales en medio acuoso para optimizar la MICP. El uso conjunto de MICP y compactación fue evaluado en elementos de tamaño medio. Los resultados indican que los suelos arenosos deben ser compactados antes de los tratamientos por irrigación para cerrar los huecos evitando el lavado de bacterias, mientras que los suelos arcillosos deben ser compactados después de las irrigaciones para evitar colmatar la superficie. La MICP mejoró la resistencia a compresión de la arena fina en un 32% en comparación con únicamente compactar. No obstante, no mejoró la resistencia de suelos granulares ni con una distribución de partículas óptima, por la interconexión de poros en el primer caso y la generación de vacíos por esporulación en el segundo.
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