Experimental investigation of rubberized functionally graded in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 31, N° 1 (02/2021)  

[article]  inREVUE DES COMPOSITES ET DES MATERIAUX AVANCES > Vol. 31, N° 1 (02/2021) . - p. 1-11 Titre : Experimental investigation of rubberized functionally graded Type de document : texte imprimé Année de publication : 2021 Article en page(s) : p. 1-11 Note générale : Bibliogr. Langues : Français (fre) Catégories : Agrégats (chimie) Béton renforcé de fibres Caoutchouc Composites à fibres -- Propriétés mécaniques Composites à fibres végétales Fibres de caoutchoucs Matériaux cimentaires -- Analyse Matériaux cimentaires -- Propriétés physiques Mélange Microstructures -- Analyse Perméabilité Résistance à la compression Index. décimale : 668.4 Plastiques, vinyles Résumé : Concrete is a basic engineering material used for developing modern structures. The engineering properties of structures can be enhanced by using different concrete grades in the same structural element based on its specific requirement in functionally graded concrete (FGC). For meticulous critical inspection, an experimental investigation was prosecuted on three different types of concrete (conventional concrete (CC), rubber fiber concrete (RFC) and rubberized functionally graded concrete (RFGC)), and their properties were compared. The fine aggregate was substituted (by volume) with waste rubber fiber by 5, 10, 15, 20 and 30% to prepare RFC and RFGC. Tests were performed on concrete samples to analyze compressive strength, flexural strength, water permeability, and drying shrinkage. Moreover, scanning electron microscopy (SEM) was utilized to observe the microstructures. Results indicated that RFGC performed better than CC and RFC and can be used to prepare precast structures and for the applications where high flexural load acts. Note de contenu : - OUTLINE OF THE EXPERIMENTS : Materials - Mix proportions - Procedure for casting - EXPERIMENTAL PROGRAM - RESULTS AND DISCUSSION : Workability - Compressive strength - Flexural strength - Water permeability - Drying shrinkage - Microstructure studies - Table 1 : Physical properties and elemental composition of cement - Table 2 : Physical properties of raw materials - Table 3 : Details of mixture (kg/m3) DOI : https://doi.org/10.18280/rcma.310101 En ligne : https://www.iieta.org/download/file/fid/49947 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37654 [article]

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Optimizing physical and mechanical properties of recycled filler and fiber sand concrete : A full factorial design approach / Ikram Souici in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 34, N° 1 (02/2024)  

[article]  inREVUE DES COMPOSITES ET DES MATERIAUX AVANCES > Vol. 34, N° 1 (02/2024) . - p. 51-59 Titre : Optimizing physical and mechanical properties of recycled filler and fiber sand concrete : A full factorial design approach Type de document : texte imprimé Auteurs : Ikram Souici, Auteur ; Leila Zeghichi, Auteur ; Abdelhalim Benouis, Auteur Année de publication : 2024 Article en page(s) : p. 51-59 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Calcaire Charges (matériaux) Composites à fibres végétales -- Propriétés mécaniques Composites à fibres végétales -- Propriétés physiques Construction -- Matériaux Déchets végétaux -- Recyclage Fibres de palmier dattier Matériaux cimentaires -- Additifs Matériaux cimentaires -- Propriétés mécaniques Matériaux cimentaires -- Propriétés physiques Sable Index. décimale : 620.13 Matériaux de construction : pierre, ciment, béton, liants de Résumé : In response to the escalating economic, technical, and environmental challenges associated with the disposal of waste from construction, demolition, and agricultural sectors, this study investigates the formulation of an innovative sand concrete. This concrete incorporates recovered materials, specifically recycled fines from waste concrete as fillers and date palm waste as fibers, to address the urgent need for sustainable construction materials. Utilizing a 23 full factorial experimental design, this investigation rigorously examined the impact of three critical parameters: fiber percentage (FP), recycled filler percentage (RFP), and fiber length (FL), on the physico-mechanical properties of the resulting sand concrete. The analysis, conducted with the statistical software JMP Trial 16, revealed divergent effects of these variables on the material's properties. It was observed that while both fiber length (FL) and fiber content (FP) exert a significant influence on the concrete's characteristics, the proportion of recycled fillers (RFP) integrated into the mixture displayed a negligible effect. Notably, the incorporation of recycled fillers and fibers into sand concrete significantly enhanced its flexural strength. Comparisons with control sand concrete demonstrated a substantial increase in strength, with improvements of up to 19.5%. This exploration not only contributes to the body of knowledge on sustainable building materials but also underscores the potential of utilizing agricultural and construction waste to enhance the performance of concrete. The findings suggest that strategic incorporation of waste-derived fibers and fillers could play a pivotal role in the development of stronger, more environmentally friendly construction materials. Note de contenu : - MATERIALS USED : Cement - Limestone filler - Fine recycled concrete - Adjuvant - Date palm fibers - EXPERIMENTAL METHODS : Mixture design approach - RESULTS AND DISCUSSION : Modeling of the physical properties of fiber sand concrete including recycled filler - Modeling of mechanical properties - Table 3 : Chemical composition of cement, limestone filler and recycled filler - Table 4 : Composition of control sand concrete (c0) - Table 5 : Physical and mechanical properties of reference concretes - Table 6 : The effects matrix for formulating recycled fiber sand concrete - Table 7 : Adjustment summary of physical properties - Table 8 : Adjustment summary of mechanical properties DOI : https://doi.org/10.18280/rcma.340107 En ligne : https://www.iieta.org/download/file/fid/121838 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41200 [article]

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