David Y.K. Toguyeni

University of Ouagadougou | UO · Département de Physique

The use of plastic waste as a resource in construction applications is an opportunity for environmental protection, conservation of natural resources and reduction of pollution. Unfortunately, they don’t always withstand the stresses to which they are subjected, leading to subsidence and collapsing. An analysis of the causes using the Pareto curve...

The aim of this study is to carry out a comparative numerical and experimental analysis of the tensile strengths of concrete. To do this, a physical and mechanical characterization of the aggregates was carried out, followed by the formulation of current concretes. Tensile strength characterization tests and a theoretical numerical study according...

This experimental study aims at the reuse of recycled aggregates (RA), resulting from the demolition of concrete, cement block and cement mortar, in the manufacture of common construction in Burkina Faso. The RA can readily replace natural aggregates in concrete. Then five formulations of natural and recycled aggregates based concrete for character...

The purpose of this article is to propose a two-dimensional (2D) model in finite element of distribution of the temperatures and deformations in extreme weather conditions of Burkina Faso (heat wave, heavy showers) using the software COMSOL Multiphysics. This model takes into account the hourly weather conditions (solar radiation, air temperatur...

The environmental problem posed by non-biodegradable waste, such as non-reusable glass bottles, is becoming a major concern in view of the huge quantities in landfills in underdeveloped countries. Prospecting the valorization of waste glass in rural constructions constitutes a potential to reduce the use of natural materials in concrete industry. I...

Buildings should be assessed in their energy behaviour to identify the most suitable construction material for the climatic context. This paper studies the influence of construction materials for the wall in housing hygrothermal behavior and energy efficiency. Three types of construction material for the wall, which are CSEB of fonio straw and Shea...

BACKGROUND AND OBJECTIVES: In landfills, containment is provided by natural or artificial clayey materials known for their low permeability and for their pollutant retention capacity. However, the properties of these media are modified by leachates, whose migration they are supposed to limit. This study aims to reconsider the criteria for choosing...

Current pavement design methods do not allow for the reduction of early deformation of the surface layers of bituminous pavements in the city of Ouagadougou. Weather conditions combined with traffic, particularly during heat waves, are factors. The temperature at the surface of the bituminous pavement can reach 62˚C but the complex modulus asso...

Buildings should be assessed in their energy behaviour to identify the most suitable construction material for the climatic context. This paper studies the influence of construction materials for the wall in housing hygrothermal behavior and energy efficiency. Three types of construction material for the wall, which are CSEB of fonio straw and Shea...

This paper deals with building envelope thermal performance through a comparative study of the use of two types of construction materials, such as CEB and cement blocks, in order to introduce the use of double walls in sustainable buildings' construction. The building envelope participates in providing thermal comfort to users and in the optimal ma...

This study permitted to evaluate the adequacy of an existing Nubian vaulted building with the "bioclimatic" concept including the performance of its envelope. In that purpose, we needed to analyze its architectural concept and to measure parameters such as the temperature of the internal and external surfaces of all the façades (walls, roof and flo...

This study allowed appreciating hygrothermal behavior, thermal comfort and the visual comfort of an existing Nubian vaulted building in the city of Ouagadougou. To achieve that purpose, we measured parameters such as the temperature and relative humidity of the indoor and outdoor environments as well as illumination by daylight inside the studied b...

The method used to evaluate the quality of concrete in structures includes, among other things, compressive strength testing of specimens cast on site. This method has shortcomings due to the non-uniformity in their formulation processes of the concrete studied in laboratories and that of the structure on site and the tardiness in obtaining test re...

The efficient use of building materials is one of the responses to increasing urbanization and building energy consumption. Soil as a building material has been used for several thousand years due to its availability and its usual properties improving and stabilization techniques used. Thus, fonio straws and shea butter residues are incorporated in...

In this article, we study the formulation by combining the fibers of hibiscus canabinus and slaked lime and highlight the effect of lime and fibers on the mechanical and thermal behavior of BTC. The results obtained show that fibers and slaked lime considerably modify the mechanical behavior (resistance to compression and bending) and thermal behav...

Sustainable building design in dry tropical areas recommends reducing exposure of buildings to solar radiation and/or designing efficient enclosures with satisfactory thermal inertia.We propose in this paper a study of the influence of the infiltration rate in the building and the coefficient of thermal transfer by convection of the walls, on the t...

In this article, we study the formulation by combining the fibers of hibiscus canabinus and slaked lime and highlight the effect of lime and fibers on the mechanical and thermal behavior of BTC. The results obtained show that fibers and slaked lime considerably modify the mechanical behavior (resistance to compression and bending) and thermal behav...

Experts in energy saving and climate change are forecasting the depletion of cheap fossil fuels by 2050 and earth-related disasters if the average earth's temperature rise exceeds 2 ° C compared to its Value of Compared to the pre-industrial era (1880-1899). As global energy consumption in the construction sector accounts for 30-40% of total consum...

Despite the developments of sectors which aim at valorizing recyclable materials, landfills remain essential in integratedwaste management. The construction of such infrastructures is an engineering challenge that must be proven over the long term. Thepurpose of this study is to understand the modification of the hydromechanical properties of botto...

This study aims to show the aptitude of a locally made composite for providing thermal comfort and mechanical resistance in buildings in hot-dry climates. The thermal characterization reveals that the thermal diffusivity of the studied material is lower than that of commonly used materials such as agglomerated and full cinderblocks and laterite blo...

In this paper, we analyse and model the mass transfer of trichloroethylene in the surface layer of soil. Our study essentially focuses on arid soils taking into account the phase change liquid–vapour. We have then examined the validity of the assumption of local equilibrium by comparing the values of instantaneous pressure of the trichloroethylene...

In a context of sustainable development and use of eco-materials, it was examined the possibility of using sewage sludge from the water treatment plant of Ziga as an inorganic support to achieve sealing barriers that can withstand high stresses to overcome any weaknesses of the geological barrier (called passive barrier). The station Ziga that pota...

This paper presents an investigation of the influence of local insulated roofing materials used in Burkina Faso on air conditioning loads of typical individual houses located in dry tropical climates. The walls are made of a composite clay–straw mixture whereas the insulated materials are made of red wood, white wood, and two assembled insulated pa...

This paper presents an investigation of the influence of local insulated roofing materials used in Burkina Faso on air conditioning loads of typical individual houses located in dry tropical climates. The walls are made of a composite clay-straw mixture whereas the insulated materials are made of red wood, white wood, and two assembled insulated pa...

Avai Avai Avai Available online at http ://services.inist.fr lable online at http ://services.inist.fr lable online at http ://services.inist.fr lable online at http ://services.inist.fr Journal des Sciences Pour l'Ingénieur N°14 (2012) 1-7 www.jspi.sn Résistance d'un poteau en béton présentant un défaut de verticalité RÉSUMÉ L'étude concerne la ré...

RÉSUMÉ Dans cet article, on étudie l’influence des matériaux locaux isolants de la toiture sur les charges de climatisation d’une maison individuelle en climat tropical sec. Le mur de l’habitat est constitué d’argile-paille et les matériaux isolants de toiture sont le bois blanc et un panneau isolant. Ces matériaux isolants de toiture ainsi que le...

Résumé : L’étude porte sur la caractérisation thermique d’un bois blanc tropical appelé Triplochiton scleroxylon et d’un panneau isolant confectionné avec de la chaux et des fibres végétales de l’hibiscus sabdariffa. Il s’agit plus spécifiquement de la détermination par la méthode du plan chaud de l’effusivité, de la conductivité thermique, de la d...