Issue |
MATEC Web Conf.
Volume 149, 2018
2nd International Congress on Materials & Structural Stability (CMSS-2017)
|
|
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Article Number | 01071 | |
Number of page(s) | 5 | |
Section | Session 1 : Materials & Pathologies | |
DOI | https://doi.org/10.1051/matecconf/201814901071 | |
Published online | 14 February 2018 |
Experimental Study on Ready-Mix Concrete: Case Study
Étude expérimentale sur un béton prêt à l’emploi: Étude de cas
ISET SFAX, Département génie civil, Sfax, Tunisie
Ready-mix concrete (RMC) in Tunisia is becoming more and more in demand in the civil engineering sector thanks to its qualities of handling in the fresh state and resistance in the hardened state, this composite material must respect the quality-price ratio. A RMC with a minimal cost is the object of our work. This research is part of the opening of higher education on professional life, where we optimized the formulation of a RMC. This work has 3 axes. In the first place the resources in building materials were characterized, namely various samples of sand, gravel, cement and water. Subsequently, the adjuvant-cement ratio (A/C) was optimized. Finally, the workability of the concrete as well as its mechanical aptitude at various ages 7, 14 and 28 days were characterized. These examinations have resulted in an appropriate formulation for any type of resource that varies according to the provenance of the quarries (gravel and sand), the effect of the plasticizer-water reducer is found for a very interesting A/C ratio, the mechanical tests for different ages are also conclusive.
Résumé
Le béton prêt à l’emploi en Tunisie devient de plus en plus demandé dans le secteur génie civil grâce à ses qualités de maniabilité à l’état frais et de résistance à l’état durci, Ce matériau composite doit respecter le rapport qualité-prix. Un béton BPE compact avec un cout minimal est l’objet de notre travail. Cette recherche s’inscrit dans le cadre de l’ouverture de l’enseignement supérieur sur la vie professionnelle, où on a optimisé la formulation d’un béton BPE. Ce travail comporte 3 axes. En premier lieu on a caractérisé les ressources en matériaux de construction à savoir de divers échantillons de sable, gravier, ciment et eau, puis on a optimisé le rapport adjuvant-ciment. Enfin on a caractérisé l’ouvrabilité du béton ainsi que son aptitude mécanique à différents âges 7j,14j, 28j. Ces examens ont abouti à une formulation adéquate pour tout type de ressource qui varie selon la provenance des carrières (gravier et sable), l’effet du plastifiant-réducteur d’eau est trouvé pour un rapport A/C très intéressant, les essais mécaniques pour les différents âges sont aussi concluants.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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