Journal of Building Materials and Structures

j. build. mater. struct.

Description

Journal of Building Materials and Structures (WebSite: http://journals.oasis-pubs.com/index.php/jbms) is an open access, peer-reviewed journal, published by the University Amar Telidji-Laghouat, with no publication fee that publishes, in English, in all areas of building materials and engineering structures. The journal welcomes the submission of manuscripts that meet the general criteria of significance and academic excellence. JBMS offers a meeting targeted for specialists around the world to publish and discuss all topics related to the building materials and structures. JBMS topics include, but are not limited to: research on elaboration and characterization of building materials, experimental techniques and microstructural properties and structural engineering. Journal Website: http://journals.oasis-pubs.com/index.php/jbms


5

Volumes

10

Numéros

54

Articles


Analysis Static Bending for Functionally Graded Materials Plates (FGM) Using High Order Shear Deformation Theory

Merdaci S,  Boutaleb S,  Hellal H,  Benyoucef S, 

Résumé: In this paper, the analysis of the mechanical bending of functionally graded plates of a rectangular plate simply supported subjected to transverse static loading. in this work the refined high order theory is used and is presented. The number of unknown functions involved is reduced to merely four, as against five in other shear deformation theories. The developed models are variably consistent, have a strong similarity with the classical plate theory in many aspects, do not require correction to the shear factor, and give rise to variations transverse shear stresses such as transverse shear parabolically varies across the shear thickness and satisfies surface conditions without stresses. Equilibrium equations are obtained by applying the principle of virtual works. The mathematical expressions of the arrow, the stresses are obtained using Navies approach to solve the system of equilibrium equations. The influence of mechanical loading and the change of the parameter of the material on mechanical behavior of the plate P-FGM are represented by a numerical example. Numerical results obtained by the present theory are compared with available solutions, from which it can be concluded that the proposed theory is accurate and simple in analyzing the static bending behavior of functionally graded plates.

Mots clés: FGM ; Rectangular plate ; Bending ; High order theory RPT


Effect of natural pozzolan and calcined paper sludge as pozzolanic additions on the physicals and mechanicals properties of heat treated self-compacting mortars

Ghernouti Youcef,  Safi Brahim,  Rabehi Bahia, 

Résumé: The aim of this research work was to investigate the effect of thermal treatment on strength development of self-compacting mortars (SCMs) based on two pouzolanic materials: Natural Pozzolan and calcined paper waste sludge, were used in the binders of SCMs. To evaluate the effect of heat treatment, a serial of the specimens were exposed to room temperature and another serial were exposed to heating regime (at temperature 60°C for a period of 14 h). The fresh and hardened properties of all mortars were evaluated. the obtained result show that the mechanical strength at 14 days of all mortar treated are almost similar or sometimes better to those not treated mortars tested at 28 days, which reduces the curing time for precast elements.

Mots clés: Heat treatment ; self-compacting mortars ; pozolanic materials ; calcined paper sludge


Effect of Street Morphology on Thermal Storage of Buildings in a Hot and Arid Climate: Case Study of Biskra (Algeria)

بن عمر كوثر,  بن عباس مصدق, 

Résumé: This work is an experimental study focusing on the relationship between street morphology and thermal storage in buildings. The first aim of this study is to reduce air conditioning usage in hot and arid areas, taking as example Biskra city (Algeria), during the long summer period (5 months), by reducing thermal storage. This leads to the reduction of carbon emissions to a level higher than the individual construction level in order to design a sustainable city, using measuring instruments (kimo HD 100 and Cason CA 380), we measured outdoor air temperature, wall temperature, relative humidity and wind speed on three street morphologies ; the (canyon, dihedral and open streets). These streets are different in terms of morphological indicators such as Sky View Factor (SVF) and albedo materials (a). We also applied mathematical equations across the thermal balance to calculate thermal storage. Our second goal was to identify the morphological indicators of the streets affecting the thermal storage of buildings. In this context, the obtained results showed that SVF was the most influential parameter on the heat storage.

Mots clés: Street morphology , ; Thermal storage , ; Sustainable city , ; Hot and arid climate , ; Sky View Factor (SVF) , ; Albedo materials (a) ; Air conditioning.