LES AJOUTS CIMENTAIRES PDF

Faehn JavaScript is disabled for your browser. Services Articles citing this article CrossRef 2. The mud and the abundant red argillaceous marl in the area, contain kaolin and iolite. Bibi 1M. The current usage metrics is available hours after online publication and is updated daily on week days. Show full document record.

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Faehn JavaScript is disabled for your browser. Services Articles citing this article CrossRef 2. The mud and the abundant red argillaceous marl in the area, contain kaolin and iolite. Bibi 1M. The current usage metrics is available hours after online publication and is updated daily on week days.

Show full document record. Compared with a Portland cement, it is noted, that with each increase in the rate of addition, a reduction in the calcium oxide rate and a growth of the silica rate. Shrinkage was measured on sealed massive blocks consisting of 0. Ciment portland au calcaire This study highlights fundamental aspects pore system and shrinkage resulting from the use of mineral admixtures in HPC.

Author s Meddah, Mohammed Seddik. The incorporation of cementitious materials considerably reduces both the total pore volume and the population of coarser pores, and increases the amount of pores smaller than 15 nm.

Abstract At the present time, high-performance concrete HPC has become widely used throughout the world in various lws fields. Article Abstract PDF This system is the best choice combining low shrinkage and excellent mechanical properties.

Initial download of the metrics may take a while. Current usage metrics About article metrics Return to article. Pore system characterization was performed at different ages using the mercury intrusion porosimetry technique MIP. The use of a binary system with glass frit as alternative cementitious material and metakaolin were harmful for shrinkage development, particularly at early age.

The first is based on the concept of threshold of solidification using the maxima of thermal flux while the second is based on the rate of deformation. Usually, self-desiccation shrinkage measurement is very complex, particularly when dealing with massive concrete for which hydration heat thermal strains and self-desiccation shrinkage evolve simultaneously. Refinement of these pores mainly depends on the type, proportion, and fineness, as well as particle size distribution of the mineral admixtures incorporated.

In this research, two new approaches were proposed in order to determine, with more accuracy, the starting point of shrinkage and to separate effective self-dessiccation shrinkage from endoplastic deformations. Cimenyaires work lies within the general scope of the valorization of local materials, having for interest the improvement of the physicochemical and mechanical characteristics of the products resulting from cimentaiees entering the clothes industry of the elements of structures and construction.

The results obtained are mainly dependent on the measurement set-up used and cimentaiges choice of the starting point of autogenous shrinkage strains measurement. Even though this concrete has shown good mechanical properties and appropriate durability, this material is also known for its high sensitivity to early-age cracking related to the high thermal and self-desiccation shrinkages cimentairew during the progress of binder hydration.

Metrics Show article metrics. However, a ternary system with silica fume and fly ash has shown lower magnitude of shrinkage and finer pore system among all cementitious systems investigated. Some features of this ajouta may not work without it. Chikouche 1 et K.

Data correspond to usage on the plateform after These results put forward the influence of the sandy and muddy clay additions, on the properties of cementing materials, thus showing the economic and environmental interest of the substitution of the clinker by the burnt clays. TOP Related Posts.

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Zujas The first is based on the concept of threshold of solidification using the maxima of thermal flux while the second is cimdntaires on the rate of deformation. Compared with a Portland cement, it is noted, that with each increase in the rate of addition, a reduction in the calcium oxide rate and a growth of the silica rate. However, cikentaires ternary system with silica fume and fly ash has shown lower magnitude of shrinkage and finer pore system among all cementitious systems investigated. This system is the best choice combining low shrinkage and excellent mechanical properties. Author s Meddah, Mohammed Seddik.

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LES AJOUTS CIMENTAIRES PDF

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