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De la Pate de Ciment au Beton: Modlisation et Mesures Exprimentales des Proprietes Rhologiques. [Cement Paste to the Concrete Modisation and Measure Experimental of the Properties Rheology.]


pdf icon De la Pate de Ciment au Beton: Modlisation et Mesures Exprimentales des Proprietes Rhologiques. [Cement Paste to the Concrete Modisation and Measure Experimental of the Properties Rheology.] (6014 K)
Ferraris, C. F.; Martys, N. S.

36e Colloque Annuel du Groupe Franais de Rhologie; Rhologie, Genie Civil et Environment. Proceedings. October 10-12, 2001, Marne l Vallee, 226-230 pp, 2001.

Keywords:

concretes; rheology; computer simulation; cement paste

Abstract:

The prediction of the concrete rheological properties is essential for the correct use of the material. The composition of the concrete is nowadays complex. It is not limited to cement, aggregates and water but also includes admixtures and fillers. Therefore it is necessary to be able to optimize the composition of a concrete on a simpler system and in a laboratory. The method that is presented here, will allow to conduct measurements on cement paste, containing admixtures and fillers, and to predict the behavior of the concrete. The prediction should be possible at two levels: qualitative and quantitative. At the qualitative level, the values of the concrete rheological properties of the concrete cannot be predicted but the ranking of the various composition considered is the same in cement paste and concrete. At the quantitative level, a computer simulation is necessary to obtain the values of the concrete viscosity from the measurements on the cement paste or mortar. The two approaches will be presented here and some examples will be provided.