Materiales de Construcción, Vol 64, No 313 (2014)

Fracture energy evolution of two concretes resistant to the action of freeze-thaw cycles


https://doi.org/10.3989/mc.2014.00813

A. Enfedaque
Universidad Politécnica de Madrid, Spain

H. L. Romero
Universidad Politécnica de Madrid, Spain

J. C. Gálvez
Universidad Politécnica de Madrid, Spain

Abstract


The current standards that regulate use of structural concrete have highlighted the durability of concrete. However, how the fracture energy of concrete evolves under the action of freeze-thaw cycles is not well known. The fracture energy of two types of concrete, one with an air-entraining additive and the other with silica fume addition, is studied after four, 14 and 28 freeze-thaw cycles. The results obtained show that the concrete with an air-entraining additive was undamaged and that fracture energy grew slightly. In addition to this, they also showed that the concrete with silica fume addition suffered severe surface scaling and its fracture energy changed due to the greater fracture areas generated.

Keywords


Concrete; Freezing-thawing, Air-entraining additive; Silica fume

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