Análisis del comportamiento mecánico de una mezcla asfáltica conteniendo relaves de flotación de mineral de hierro

Autores/as

DOI:

https://doi.org/10.33448/rsd-v10i17.24220

Palabras clave:

Pavimentos de carreteras; Mezclas asfálticas; Relaves de flotación de mineral de hierro.

Resumen

Los estudios con relaves de flotación resultantes del proceso de beneficio del mineral de hierro, en diferentes nichos de mercado, son cada vez más necesarios ante el gran pasivo ambiental que genera su disposición en rellenos sanitarios, ya que son residuos generados en grandes volúmenes y de bajo valor económico para la minerías compañías.    El objetivo de este trabajo fue analizar el comportamiento mecánico de una mezcla asfáltica densa, con relaves de flotación de mineral de hierro en sustitución del relleno de agregados minerales, en comparación con el comportamiento de una mezcla compuesta únicamente por agregados naturales. Para ello, se dosificaron las mezclas, según la metodología Marshall, y se realizaron ensayos de estabilidad y fluencia, resistencia a la tracción, módulo de resiliencia, fluencia dinámica y vida a fatiga. Los resultados obtenidos en esta investigación revelaron que los relaves de flotación de mineral de hierro presentaban características técnicas adecuadas para su uso, como un material fino para ser incorporado en mezclas asfálticas densas. Además, su uso como material alternativo en revestimientos asfálticos puede generar beneficios ambientales, reduciendo el volumen de material descartado en presas de relaves y reduciendo las áreas de exploración de depósitos para la extracción de agregados minerales.

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Publicado

22/12/2021

Cómo citar

SONCIM, S. P. .; OLIVEIRA, J. H. de C. .; ALMEIDA, M. O. de .; OLIVEIRA, C. A. de S. .; BELOTTI, F. M. .; CAVALCANTE, E. H. .; RESENDE, L. Análisis del comportamiento mecánico de una mezcla asfáltica conteniendo relaves de flotación de mineral de hierro. Research, Society and Development, [S. l.], v. 10, n. 17, p. e122101724220, 2021. DOI: 10.33448/rsd-v10i17.24220. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/24220. Acesso em: 30 jun. 2024.

Número

Sección

Ingenierías