Production of more durable and sustainable concretes using volcanic scoria as cement replacement

A. M. al-Swaidani

doi:10.3989/mc.2017.00716

Autores/as

A. M. al-Swaidani Faculty of Architectural Engineering, Arab International (Formerly European) University https://orcid.org/0000-0001-9414-0482

DOI:

https://doi.org/10.3989/mc.2017.00716

Palabras clave:

Puzolana, Cementos con adiciones, Propiedades mecánicas, Durabilidad, MEB

Resumen

El objetivo del estudio fue investigar la resistencia y durabilidad de cementos basados en escoria volcánica. El desarrollo de resistencias a flexión y compresión, se estudió en morteros y hormigones con escoria volcánica en porcentajes de reemplazo desde 10 al 35%. Se realizaron ensayos de permeabilidad al agua, penetración de cloruros y porosidad de los hormigones a las edades de 2, 7, 28, 90 y 180 días. Los resultados revelaron que la escoria volcánica podría ser adecuada para la fabricación de cementos con adiciones. La resistencia de morteros/hormigones que contiene escoria volcánica fue menor que la de los correspondientes morteros u hormigones sin adición a todas las edades. Sin embargo, a los 90 días de curado, las resistencias de los morteros/hormigones con escoria fueron comparables con las del cemento sin adición. La permeabilidad al agua, penetrabilidad de cloruros y porosidad de los hormigones con escoria fueron mucho más bajos que los del correspondiente hormigón sin escoria. Los resultados se analizaron estadísticamente y las ecuaciones de estimación se han desarrollado para predecir las propiedades estudiadas. También se empleó el análisis SEM/EDX.

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