Publications (35)
ARTICLE
Improving the Bearing Capacity of Road Soil by Treatment with Cement and Lime: Case of National Road No. 4 in the City of Ouagadougou in Burkina Faso
Bernard Gouba, Boukari Sawadogo, Dieudonné Dabilgou
Nowadays, the question of the availability of good quality materials is increasingly raised in road projects. This has led us to techniques for improving the performance of materials that can be used in road layers. Cement and lime treatment is a well-known technique for improving materials in road construction. The test is done by adding a sm(...)
CBR Bearing Capacity, Improvement, GAL, Cement, Lime
COMMUNICATION
Impact de la toiture sur le transfert de la chaleur des bâtiments dans la zone soudano-sahélienne : Cas de la ville de Ouagadougou, Burkina Faso
GOUBA Bernard, OUOBA Emile, SAWADOGO Boukari
L’Homme réalise son habitation pour se protéger tout en tirant profit des avantages de son environnement direct. En plus, le système climatique mondial connait déjà des
changements profonds. Le Burkina Faso est un pays sahélien caractérisé par un climat tropical sec avec des températures ambiantes très élevées. L’adaptation à ces changements(...)
Confort thermique, température, changement climatique, cellule test
COMMUNICATION
L’usage des polystyrènes comme matériaux de construction des bâtiments au Burkina Faso : enjeux économiques, sociale et environnementale.
GOUBA Bernard
L’acquisition d’un logement décent à des moindres coûts est une préoccupation majeure au Burkina Faso. En effet, un grand nombre des bâtiments sont construits en matériaux bétons et parpaings. Cette technique de construction des bâtiments avec ces matériaux coûte chère et très énergivores, ce qui pose un problème d’accès pour la majorité des p(...)
Polystyrène, bâtiment, logement social, matériau de construction
ARTICLE
Sustainable approach to quality assurance in cement-improved soil: applications of handheld XRF for geotechnical solutions
Mathiro José Sindete, Hirofumi Usui, Donzala David Some and Takenori Hino
Traditional methods for evaluating the quality of the Deep Mixing Method (DMM) in Japan, such as the phenol
phthalein tracer method, present limitations in ensuring strength improvement. This study explores handheld X-ray
f
luorescence (XRF) as a sustainable alternative for quality assessment. The elemental composition of cement-treated(...)
Quality assurance, Handheld XRF, Phenolphthalein tracer, Cement hydrated products, Cement-improved soil
ARTICLE
Sustainable construction and quality of improved columns with three types of water-cement ratios on deep mixing method in Saga Lowland, Kyushu, Japan
Hirofumi Usui, Donzala David Some , Mathiro José Sindete and Takenori Hino
In this study, we investigated the application of the deep mixing method (DMM) to cohesive soil in the Saga Lowland
of Kyushu, Japan. The study focused on examining three types of water-cement ratio (W/C) conditions, with a con
stant addition of cement-based binder (C). Due to the soft clay nature of the Saga Lowland, frequent ground settle(...)
Ground improvement, Water-cement ratio, Injection rate, Unconfined compressive strength, Lateral displacement
ARTICLE
Effect of Water-Cement Ratio and Liquidity Index on the Deep Mixing Method using Cement Slurry: A Case Study of Kaolin Clay Powder.
D. D. SOME , H. USUI, M. J. SINDETE , K. MITSUSE , J. L. PASTOR and T. HINO
The liquidity index is a crucial factor in geotechnical engineering
used to assess soil behavior under varying loading conditions. It
provides valuable information about a soil's deformability when
subjected to loads, which is vital for structural and foundation
design. In the domain of soil-cement, especially within the deep
mixing(...)
Kaolin clay powder, Liquidity index, Water-cement ratio, Deep mixing method
ARTICLE
USE OF POLYSTYRENE MATERIALS IN THE CONSTRUCTION OF BUILDINGS IN THE NORTH- CENTRAL REGION OF BURKINA FASO: ECONOMIC, SOCIAL AND ENVIRONMENTAL ISSUES
Gouba Bernard, Sawadogo Boukari , Ouoba Emile
The acquisition of decent housing at lower costs is a major concern in Burkina Faso. Indeed, a large number of buildings are built in concrete and concrete blocks. This technique of building buildings with these materials is expensive and very energy-intensive, which poses an access problem for the majority of Burkinabè populations. In this re(...)
Polystyrene, Building, Social Housing
ARTICLE
Impacts des granulats recyclés (bétons et des briques) sur les bétons frais dans la région du centre au Burkina Faso
Boukari SAWADOGO, OUOBA Emile, Bernard GOUBA, CUSH NGONZO LUWESI
Le monde de la construction a besoin de granulats de qualité pour la construction des routes, des bâtiments, et des infrastructures publiques, de transport, ainsi que dans la réalisation des travaux d’entretien. Ce besoin continue de s’accroître partout en Afrique en général et au Burkina Faso en particulier. Dans le cas spécifique de cette re(...)
granulats recyclés – rhéologiques – béton – Etat hydrique substitution.
ARTICLE
Influence of Water-Cement Ratio on the Strength Distribution inside a Soil-Cement Material
Donzala D. Some, Ohindemi G. Yameogo, Magai N. Thon
In the domain of soil-cement, especially within the deep mixing method (DMM), various factors
influence the strength of cement-stabilized soft soils. These factors include soil candidate consistency parameters,
cement content, water-cement ratio (W/C), mixing time, and curing time. Notably, a lower W/C ratio resulted in a
higher unconfin(...)
water-cement ratio; strength distribution; soil-cement material; needle penetration index
ARTICLE
Monitoring of physicochemical parameters during Cocomposting of dehydrated faecal sludge and organic household solid waste: assessment of composts maturity
Ouindpouiré Auguste Aristide Soré and Samuel Ouoba
This study proposes a method of recovery by co-composting of dehydrated faecal sludge (DFS) and solid organic household wastes (SOHW) in Ouagadougou. The city has three drying bed treatment stations which are partially functioning because after the liquid/solid separation, the bio-solids are piled up without final treatment and currently const(...)
Co-composting · Dehydrated faecal sludge · Organic household solid waste physicochemical parameters
ARTICLE
New Experimental Methods for Measuring suction and chemical potential of Aqueous Solution of Ethanol in Soil
Samuel Ouoba and Jean-Claude Bénet
In this article we develop various experimental methods for measuring the suction and the chemical potential of water and ethanol in soil. The results obtained are in good agreement between the method using the filter paper and the sorption isotherm at low water contents. The precision is less good for the high water contents between the filte(...)
Chemical potential Fragmentation activimeter New methods Soil Ethanol solution Suction
ARTICLE
Physicochemical Evaluation of Soil-Cement by X-Ray Fluorescence: Percentage-Based Data
Donzala D. Some, Takenori Hino, Hirofumi Usui, and Mathiro J. Sindete
Cement Deep mixing method applied in Lowland areas, is mostly set to a value of water-cement ratio equal to one (W/C =
1.0). Also, W/C is determined based on empirical experience so far, and Engineers seem reluctant to increase the amount of water
(W/C > 1). They have concerns over the possibility of insufficient mechanical strength of imp(...)
physico-chemical evaluation, soil-cement, Ariake clay, X-ray fluorescence, W/C
ARTICLE
Characterization of Recycled Aggregates of Concrete and Bricks in the Central Region of Burkina Faso
GOUBA Bernard , SAWADOGO Boukari
Aggregates used in the construction of civil engineering works have an impact on the properties of concrete. For several years the central region is famous because of the effects of extraction of natural aggregates on the environment. We conducted laboratory tests on several recycled aggregates of concrete and bricks to determine their mechani(...)
Recycled aggregates; strength; concrete; non-recycled aggregate
ARTICLE
Development of numerical model to describe water transfer in hygroscopic soil: use of a new method based on off-center upstream principle for convective flux
Samuel Ouoba, Alfa Omar Dissa and François Ouedraogo
This manuscript is focused on the mechanisms of water evaporation and the phenomena affecting its migration toward the groundwater. The objective is to estimate the essential parameters which govern the diffusion transfer. The phenomenological parameters used in the model are obtained experimentally and the mass transfer equations have been so(...)
numerical model, eccentric upstream, hygroscopic soil, convection, profiles
ARTICLE
Numerical Modelling and Simulation of Water Transfer in Soil with Low Water Content
S. Ouoba and J.-C. Bénet
In this paper, we present the results of numerical model and simulation of water transfers in soils with low water content. The main objective is to identify the major phenomena which allow to adequately describe water transfer in soil between the filtration of liquid phase and the capillary rise. We have shown that in the superficial layer of(...)
Hygroscopic · Numerical modeling · Pendular · Soil water content · Water transfer