Assessment of mechanical properties of fibrous mortar and interlocking soil stabilised block (ISSB) for low-cost masonry housing

F. Qamar; T. Thomas; M. Ali

doi:10.3989/mc.2019.13418

Autores/as

F. Qamar University of Warwick https://orcid.org/0000-0003-2240-1035
T. Thomas Engineering Dept. University of Warwick https://orcid.org/0000-0001-9903-067X
M. Ali Department of Civil Engineering, Capital University of Science and Technology https://orcid.org/0000-0002-3690-2183

DOI:

https://doi.org/10.3989/mc.2019.13418

Palabras clave:

Ladrillo, Mortero, Propiedades mecánicas, Refuerzo de fibras, Análisis de imágenes

Resumen

Los muros de bloques de suelo estabilizados entrelazados (ISSB) se han utilizado en casas de bajo costo en todo el mundo, especialmente en países en desarrollo. Es conocido que estos muros presentaban debilidad frente a cargas laterales (por ejemplo, viento o terremoto) sin consideraciones especiales. En este trabajo se han evaluado las propiedades mecánicas (resistencia a compresión, módulo elástico, absorción de energía pre/post agrietamiento e índice de tenacidad) de ISSB con tres configuraciones y siete combinaciones de cubos de morteros liso y fibrosos. Para los morteros fibrosos se utilizó fibra de sisal y paja de arroz en proporciones del 2% y 5% con respecto a la masa de cemento. Se desarrollaron ecuaciones empíricas para predecir el módulo elástico. Los resultados mostraron que los ISSB poseen una fortaleza suficiente para poder ser utilizados en obras de albañilería. La carga de falla y el índice de tenacidad de las muestras de fibra de sisal al 2% se mejoraron en un 10% y un 16%, respectivamente, mientras que se encontró una mejora de 2.21 veces en el módulo de elasticidad. Por lo tanto, un 2% de fibra de sisal en yeso (es decir, revestimiento reforzado) probablemente mejoraría la resistencia lateral de las paredes.

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