Title: Damages caused by alkali reactive concrete in structural elements

Authors: Fouzia Bouabdallah; Mohamed Fouzi Habita; Noureddine Ferhoune; Nadjette Rehamnia

Addresses: Department of Civil Engineering, Badji Mokhtar University, P.O. Box 12, Annaba, Algeria ' Department of Civil Engineering, Badji Mokhtar University, P.O. Box 12, Annaba, Algeria ' Department of Civil Engineering, Larbi Ben M'hidi University, P.O. Box 358, Oum El Bouaghi, Algeria ' Department of Civil Engineering, Badji Mokhtar University, P.O. Box 12, Annaba, Algeria

Abstract: Slow reaction occurs between concrete aggregates and cement alkalis; the alkali reaction (noted by AAR) is the most famous internationally concrete pathology actually. With: potential reactive aggregate, height rate of alkalis and RH > 80%. Destroying solid gel results generates an internal expansive force causing cracks and checking, so the fall concrete structures in the mechanical properties. To simulate (AR), evolutionary universal tests ASTM, CSA and AFNOR are used in our laboratory works: Civil Engineering Annaba University. For concrete and reinforced concrete one Dreux-composition is tested with: aging method, doping alkali method and the same limestone aggregates (p). Damages with volume effect are: expansions with (S) shape, cracks have (Y) shape (1.5 mm max-concrete B).

Keywords: concrete; alkali; crack; expansion; reaction; aggregate; gel; experiment; specimen; beam.

DOI: 10.1504/IJSMSS.2017.092259

International Journal of Sustainable Materials and Structural Systems, 2017 Vol.3 No.1, pp.79 - 97

Received: 03 Jan 2017
Accepted: 20 May 2017
Published online: 12 Jun 2018 *

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