Reuse of Djenane Abd-El-Tif, an Emblematic Islamic Garden in Algiers

Djenane Abd-el-Tif is an example of an Algerian summer residence dating from the Ottoman era. This type of building is not very well-known and remains marginalized in research that is more interested in the townhouses of the medina of Algiers. Yet, the gardens, the ingenious irrigation systems, fountains, and other patterns of Islamic gardens make of these djenane a unique typology worth exploring and preserving. Indeed, Islamic garden design is an art in itself and any restoration or conservation work should preserve the authenticity of its characteristics. The djenane Abd-el-Tif was fully restored following the damage caused by the Boumerdès earthquake in 2003. This led to the discovery of various elements that are particularly informative about its architecture and composition. It also highlighted the existence of valuable Islamic garden patterns, together with the djenane\u27s exceptional flora, which could provide added-value to the tourism potential of such residences. However, if restoration work has saved the djenane Abd-el-Tif, its garden with its Islamic design characteristics is not yet fully investigated nor listed as a cultural heritage. This article presents the djenane as a cultural heritage and argues that right restoration and reuse could contribute to enhancing knowledge about Islamic garden design in North Africa

Effectiveness of Composite CFRP Confinement on Very Slender Reinforced Concrete Columns

This research work is based on an experimental study resulting from tests carried out on six square-section slender reinforced concrete columns. The columns were confined by single-layer wraps of carbon fiber composites. They were tested under eccentric compression loading, to study the effects of confinement by the carbon fiber composite on resistance loading, rigidity, ductility and slender column behavior in genera

Slender concrete deep beams Behaviour, serviceability and strength

SIGLEAvailable from British Library Document Supply Centre-DSC:DX190306 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

“ Flowability of fibre reinforced concrete and its Effect on the Mechanical Properties”

International audienc

Geometrical Effect on the Behaviour of CFRP Confined and Unconfined Concrete Columns

International audienc

Efficacité du renforcement des poutres en béton armé par des matériaux composites

Pour réduire le coût et assurer un comportement relativement plus ductile pour des éléments en béton armés renforcés, l’addition des fibres de verre pourrait être considérée comme solution de rechange, puisqu’elles sont relativement plus déformables et meilleur marché que la fibre de carbone. Dans ce sens, le travail actuel vise à évaluer l’efficacité du renfort externe sur les poutres renforcées par le tissu de FRP (verre-carbone). Un total de sept poutres en béton armé a été renforcé en flexion et en cisaillement, et testé sous un chargement quatre points cyclique statique. Les champs des contraintes et de déformation ont été contrôlés par un système de caméra numérique “Gom-Aramis”. Les résultats ont été analysés en termes de résistance, rigidité, ductilité et mode de rupture

Efficiency of Beam-Column Joint Strengthened by FRP Laminates

International audienceThe recent earthquakes have shown that the vulnerability and the defects of the concrete joints in beam- column framed structures were the main causes for many building collapses. Such vulnerability and defects are in general the consequences of many factors. External strengthening with composite materials represents an alternative and a sound and efficient technique to improve the performances and aptitude to withstand seismic action. However, while the use of such strengthening technique offers many advantages, it has some disadvantages, particularly a remarkable loss of ductility. The present study examines the effects of an external strengthening of reinforced concrete beam-column joints against cyclic loading using CFRP laminates and GFRP sheet. The experimental program is constituted of three beam-column reinforced concrete joints at a scale of one to three (1/3) tested under the effect of a prestressing axial load acting over the column. The beams were subjected at their ends to a reverse cyclic loading under displacement control to simulate a seismic action. Strain and cracking fields were monitored with the help a digital recording camera. Following the analysis of the results, a comparison was made concerning the performances in terms of ductility, strength and mode of failure of the different strengthening solutions

Efficacité du renforcement des poutres en béton armé par des matériaux composites Efficiency of strengthening concrete beams using FRP

Pour réduire le coût et assurer un comportement relativement plus ductile pour des éléments en béton armés renforcés, l’addition des fibres de verre pourrait être considérée comme solution de rechange, puisqu’elles sont relativement plus déformables et meilleur marché que la fibre de carbone. Dans ce sens, le travail actuel vise à évaluer l’efficacité du renfort externe sur les poutres renforcées par le tissu de FRP (verre-carbone). Un total de sept poutres en béton armé a été renforcé en flexion et en cisaillement, et testé sous un chargement quatre points cyclique statique. Les champs des contraintes et de déformation ont été contrôlés par un système de caméra numérique “Gom-Aramis”. Les résultats ont été analysés en termes de résistance, rigidité, ductilité et mode de rupture. To reduce the cost and to ensure a behavior relatively more ductile for concrete strengthening elements, the addition of glass fibers could be regarded as solution of replacement, since they are relatively more deformable and cheaper than carbon fiber. In this sense, current work aims at evaluating the effectiveness of the external reinforcement on the beams strengthened by fabric of FRP (glass – carbon). Seven concrete beams reinforced were strengthening in bending and shearing, and were testing under four point cyclic static. The fields of the stresses and deformation were controlled by a numerical system of camera “Gom-Aramis”. The results were analyzing in term of resistance, rigidity, ductility and mode of failur