[ Caractérisation mécanique et physique d'un béton léger à base de sable calcaire et des granulats de liège ]
Volume 3, Issue 3, July 2013, Pages 739–748
Brahim LAOUD1
1 Department of civil engineering, University of Amar Telidji, Laghouat, Algeria
Original language: Arabic
Copyright © 2013 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Faced with the growing needs of resource materials and the requirements of environmental protection in a vision of sustainable development, it became necessary to study all the possibilities of reuse and recycling of industrial wastes and by-product especially in the field of civil engineering. There is an increasing interest in limestone fines from limestone quarries in concrete construction to overcome inherent deficiencies in river sand in particular regions of North Africa. Limestone sand is a by-product of the quarry process and typically does not have a significant demand due to its high content of small particles whose diameters are less than 80 ?m. This work is part of the promotion of local products such as waste from the quarry crushing (limestone sand) in the region of Laghouat (Algeria) and waste from the manufacture of agglomerated expanded cork, using them in the making of cement materials for construction primarily for thermal insulation. To study the influence of the size of the aggregates on the physico-mechanical and thermal properties of concrete, two classes of granular aggregates are used 3 / 8 and 8 / 15. The results obtained showed that the reduction weight of concrete containing crushed sand with expanded cork significantly reduces its thermal conductivity which improves their thermal insulation, but causes a drop in the strength of concrete produced. Lightweight concrete with expanded cork granules 3/8 are the lightest and most isolated, and they have low mechanical strength compared to concrete with lightweight aggregates 8/15.
Author Keywords: Sustainable development, Valorization of wastes, Byproducts, Limestone sand, Expanded cork, Insulation.
Volume 3, Issue 3, July 2013, Pages 739–748
Brahim LAOUD1
1 Department of civil engineering, University of Amar Telidji, Laghouat, Algeria
Original language: Arabic
Copyright © 2013 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Faced with the growing needs of resource materials and the requirements of environmental protection in a vision of sustainable development, it became necessary to study all the possibilities of reuse and recycling of industrial wastes and by-product especially in the field of civil engineering. There is an increasing interest in limestone fines from limestone quarries in concrete construction to overcome inherent deficiencies in river sand in particular regions of North Africa. Limestone sand is a by-product of the quarry process and typically does not have a significant demand due to its high content of small particles whose diameters are less than 80 ?m. This work is part of the promotion of local products such as waste from the quarry crushing (limestone sand) in the region of Laghouat (Algeria) and waste from the manufacture of agglomerated expanded cork, using them in the making of cement materials for construction primarily for thermal insulation. To study the influence of the size of the aggregates on the physico-mechanical and thermal properties of concrete, two classes of granular aggregates are used 3 / 8 and 8 / 15. The results obtained showed that the reduction weight of concrete containing crushed sand with expanded cork significantly reduces its thermal conductivity which improves their thermal insulation, but causes a drop in the strength of concrete produced. Lightweight concrete with expanded cork granules 3/8 are the lightest and most isolated, and they have low mechanical strength compared to concrete with lightweight aggregates 8/15.
Author Keywords: Sustainable development, Valorization of wastes, Byproducts, Limestone sand, Expanded cork, Insulation.
Abstract: (arabic)
Devant les besoins croissant des ressources en matériaux, aussi que les exigences de préservation de l'environnement dans une vision de développement durable, il est devenu nécessaire d'étudier toutes les possibilités de réutilisation et de valorisation des déchets et sous-produits industriels notamment dans le domaine de génie civil. Il ya un intérêt croissant pour les fines calcaire à partir de carrières de concassage, dans la construction en béton pour surmonter les déficiences inhérentes à sable de rivière dans certaines régions d'Afrique du Nord. Le sable calcaire est un sous-produit du processus de carrière et typiquement ne pas avoir une demande importante en raison de sa teneur élevée en petites particules dont le diamètre est inférieur à 80 μm. Ce travail s'inscrit dans le cadre de la valorisation des produits locaux tels que les déchets de la carrière de concassage (sable calcaire) de la région de Laghouat(Algérie) et les déchets issues de la fabrication des agglomérées de liège expansé, en les utilisant dans la confection des matériaux cimentaires de construction destinés en premier lieu à l'isolation thermique. Pour étudier l'influence de la grosseur des granulats sur les caractéristiques physico-mécaniques et thermiques des bétons, deux classes granulaires sont employées granulats 3/8 et 8/15. Les résultats obtenus ont montré que l'allégement du béton à base de sable de concassage avec le liège expansé diminue considérablement sa conductivité thermique ce qui améliore leur isolation thermique, mais entraine une chute de la résistance mécanique des bétons élaborés. Les bétons allégés avec les granulats de liège expansé 3/8 sont les plus légers et les plus isolants et possèdent des résistances mécaniques faibles par rapport aux bétons allégés avec les granulats 8/15.
Author Keywords: Développement durable, Valorisation des déchets, Sous-produits, Sable calcaire, Liège expansé, Isolation.
How to Cite this Article
Brahim LAOUD, “Mechanical and physical characterization of lightweight concrete based on limestone sand and cork granules,” International Journal of Innovation and Applied Studies, vol. 3, no. 3, pp. 739–748, July 2013.
