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Consideration of durability of concrete structures: Past, present, and future

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Abstract

The paper expresses durability in terms of the expected conditions of exposure as well as of the specified or traditional service life of structure. A brief review of deleterious actions is given. Consideration of durability means how ensuring durability is viewed by designers, and not detailed advice or rules. Thus, the paper reviews the past attitude, which relied on providing strong concrete, it being believed that durability was concomitant with strength. Changes in the properties of cement, in that, with the ‘new’ cements, the same strength as specified heretofore could be achieved at a higher water-cement ratio resulted in structures with a distinctly reduced durability. This led to a re-consideration of mix design procedures, so that both strength and durability are now explicity considered. The future approach has to rely on the use of a range of cementitious materials and admixtures and on a meticulous performance of all operations from batching to curing.

Résumé

Dans cet article, la durabilité est exprimée en termes d'exposition et de durée de vie spécifiée ou traditionnelle de la structure. Une brève étude des actions délétères est présentée. On entend par «Considération de la durabilité» la façon dont la durabilité est vue par l'ingénieur, et non pas dans le détail des règles. Ainsi, l'article examine l'ancien point de vue basé sur l'opinion, selon lequel durabilité et résistance sont concomitantes. Des changements de propriétés des ciments font que notamment les «nouveaux ciments» obtiennent la même résistance qu'auparavant, avec un rapport eau-ciment plus élevé et une durabilité réduite. Par conséquent, la formulation des bétons a été modifiée, pour que la résistance et la durabilité soient toutes deux expressément prises en compte. À l'avenir, il sera nécessaire d'utiliser toute une gamme de matériaux cimentaires et d'adjuvants, et de s'assurer d'une exécution exemplaire de toutes les opérations, depuis le gâchage jusqu'à la cure.

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Editorial Note Adam Neville is a Member of the Board of Advisers of RILEM's Scientific Committee.

This paper was substantially presented as the opening keynote address at a conference, of which the author was Honorary President, on Concrete at the Dawn of the New Millenium, held in Krakow, Poland, on 9th an 10th November 2000.

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Neville, A. Consideration of durability of concrete structures: Past, present, and future. Mat. Struct. 34, 114–118 (2001). https://doi.org/10.1007/BF02481560

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  • DOI: https://doi.org/10.1007/BF02481560

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