Análisis experimental del comportamiento mecánico de tubos de hormigón reforzado con fibras híbridas

Federico  González; Viviana  Rougier

doi:10.3989/ic.85975

Autores/as

Federico González Docente e investigador. Universidad Tecnológica Nacional https://orcid.org/0000-0002-0665-9258
Viviana Rougier Universidad Tecnológica Nacional https://orcid.org/0000-0003-2252-4350

DOI:

https://doi.org/10.3989/ic.85975

Palabras clave:

hormigón reforzado, fibras, híbridas, tubos

Resumen

El hormigón reforzado con dos o más tipos fibras se denomina hormigón reforzado con fibras híbridas (HRFH). En este trabajo se evalúa el desempeño mecánico del HRFH, de acero y de polipropileno, en su aplicación en tubos de 600 mm de diámetro. Para ello, se determinan experimentalmente, a través del ensayo de compresión diametral, la capacidad de carga y el modo de falla de tubos de HRFH (THRFH) elaborados con dos dosificaciones distintas de fibras. Los resultados son comparados con los obtenidos del ensayo de tubos de hormigón reforzado con fibras de acero (THRFA), también elaborados con dos dosificaciones distintas de fibras, y tubos de hormigón armado (THA) con armadura tradicional de barras de acero. Los THRFH con las dosis de fibras híbridas utilizadas alcanzaron una resistencia equivalente a los THA y, además, mostraron un modo de falla dúctil, sin desprendimiento de hormigón o aplastamiento diametral luego de la rotura.

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