Physical and mechanical characterization of concrete exposed to elevated temperatures by using ultrasonic pulse velocity

Authors

DOI:

https://doi.org/10.17533/udea.redin.n75a12

Keywords:

Elevated temperature, concrete, compressive strength, ultrasonic pulse velocity

Abstract


Experimental investigations were carried out for assessing the influence of thermal loadings on the physical and mechanical properties of plain concrete after fire exposure. Cylindrical specimens were subjected to thermal loading at different temperatures inside a muffle furnace; while cubic specimens were exposed to direct flame following the ISO 834 standard curve. For both specimens’ geometries the thermal loading was applied until it reached the selected temperature which was held for an hour. The specimens were tested for weight loss, optical microscopy, ultrasonic pulse velocity, residual compressive strength, X-ray diffraction and porosity. It has been observed that with the increase in the thermal loading, the physical and mechanical properties experienced significant detriment. The results suggested that the ultrasonic pulse velocity method is appropriate as an indicator of concrete compressive strength and microstructural properties after fire exposure.

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Author Biographies

Ricardo Alfredo Cruz-Hernández, Universidad Industrial de Santander

Doctorado en Ciencias Tecnicas, Technische Universitat Wien Austria

Docente, Director Grupo de Investigación en Materiales y Estructuras de Construcción.

Luis Eduardo Zapata-Orduz, Universidad Industrial de Santander

Docente, Escuela de Ingeniería Civil, Facultad de Ingeniería Físico-Mecánica

Luz Amparo Quintero-Ortiz, Universidad Industrial de Santander

Escuela de Ingeniería Metalúrgica y Ciencia de Materiales, Facultad de Ingenierías Físico-Químicas

Julián Orlando Herrera-Ortiz, Universidad Industrial de Santander

Escuela de Ingeniería Metalúrgica y Ciencia de Materiales, Facultad de Ingenierías Físico-Químicas

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Published

2015-05-18

How to Cite

Cruz-Hernández, R. A., Zapata-Orduz, L. E., Quintero-Ortiz, L. A., & Herrera-Ortiz, J. O. (2015). Physical and mechanical characterization of concrete exposed to elevated temperatures by using ultrasonic pulse velocity. Revista Facultad De Ingeniería Universidad De Antioquia, (75), 118–129. https://doi.org/10.17533/udea.redin.n75a12