Influence of the morphological characteristics of coarse aggregate on the mechanical properties of concrete

Mario López Rojas

doi:10.33064/artificio720257384

Autores/as

Mario López Rojas Colima University, Mexico. https://orcid.org/0009-0005-1013-6520

DOI:

https://doi.org/10.33064/artificio720257384

Palabras clave:

coarse aggregate, mechanical properties of concrete, compressive strength

Resumen

The morphology of the aggregates can have a significant effect on the behavior of fresh and hardened concrete. In this study the morphological characteristics (roundness, aspect and fractal dimension) of coarse aggregated (crushed and natural gravel) were obtained throught binary images processed with the Image-PRO software. The morphological properties were correlated with mechanical behavior of hardened (compressive strength) and fresh concrete (slump). The results shows a trend to lower values of roundness, aspect and fractal dimension for natural gravel particles, suggesting smoother contours and lower elongated, comparing with higher values of crushed gravel. Additionally, the shape of coarse aggregated significantly affected the mechanical behavior of hardened concrete, because the concrete cylinders elaborated with same particles (natural gravel) have a trend to higher values and lower standard deviation of compressive strength.

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