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Étude des effets du cobroyage d'un sable et d'un clinker sur les propriétés d'un béton de sable
Étude des effets du cobroyage d'un sable et d'un clinker sur les propriétés d'un béton de sable
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Étude des effets du cobroyage d'un sable et d'un clinker sur les propriétés d'un béton de sable
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Étude des effets du cobroyage d'un sable et d'un clinker sur les propriétés d'un béton de sable
Étude des effets du cobroyage d'un sable et d'un clinker sur les propriétés d'un béton de sable

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Étude des effets du cobroyage d'un sable et d'un clinker sur les propriétés d'un béton de sable
Étude des effets du cobroyage d'un sable et d'un clinker sur les propriétés d'un béton de sable
Journal Article

Étude des effets du cobroyage d'un sable et d'un clinker sur les propriétés d'un béton de sable

2002
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Overview
L'emploi d'additions minérales en cobroyage avec le clinker peut permettre d'améliorer les performances des bétons de sable et de réduire la quantité consommée de ciment. Un sable dunaire est mélangé, en proportions variables, avec un clinker pour obtenir des liants cobroyés utilisés pour composer le béton de sable. Afin de séparer les effets de la finesse du liant de ceux du dosage, un plan d'expériences en deux phases a été suivi. Dans un premier temps, on quantifie la finesse de mouture du liant cobroyé, puis on étudie l'influence des différents paramètres sur les caractéristiques mécaniques des bétons de sable. On caractérise en particulier le degré d'activité des ajouts sableux qui peut se révéler significatif et conduire à l'économie d'une certaine quantité de ciment. Mineral additions can be mixed with the clinker before the grinding process. Thus, one obtains a 'coground' binder which can allow some reduction in the cement ratio. Some dune sand is added, in variable proportions, to the clinker, such as to obtain a coground binder from which different sandcrete mixes are defined. To distinguish the effects of the binder fineness from those of the addition ratio, a two-stage experimental design process has been followed. In a first stage, the fineness of the coground binder has been quantified. Thereafter, the influence of several parameters (fineness, addition ratio, water/binder ratio) on the mechanical properties has been evaluated and modelled. The degree of activity of the mineral additions has been confirmed. It can lead to some gain in the cement content.[PUBLICATION ABSTRACT]
Publisher
Springer Nature B.V