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On the correlation between porosity and strength in high-alumina cement mortars

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Abstract

The evolution in time of the strength and porosity of mortars made with the same type of high-alumina cement and two different types of aggregate, calcareous and siliceous, is studied, and the effects of aggregate composition on both parameters are analysed. It is found that between strength and porosity a linear correlation exists. The effects of pore diameter on such correlation is investigated and it is ascertained that the best correlation can be obtained for total cumulative porosity. The results show that this correlation can be useful for the determination of compressive strengthin situ.

Résumé

On étudie l’évolution dans le temps de la résistance et de la porosité de mortiers confectionnés avec le même type de ciment alumineux et deux types différents de granulats, calcaire et siliceux, et on analyse les effets de la composition du granulat sur les deux paramètres.

On constate qu’il existe une corrélation linéaire entre la résistance et la porosité. On examine les effets du diamètre des pores sur une telle corrélation et on établit qu’on peut obtenir la meilleure corrélation pour la porosité totale. Les résultats montrent que cette corrélation peut servir pour déterminer la résistance à la compressionin situ.

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  1. Department of Structural Engineering, Politecnico di Torino, Italy

    Ferdinando Indelicato

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  1. Ferdinando Indelicato
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Indelicato, F. On the correlation between porosity and strength in high-alumina cement mortars. Materials and Structures 23, 289–295 (1990). https://doi.org/10.1007/BF02472202

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