Thermo-Physical Properties of Local Materials Used in the Construction of Chad

Abstract

As earth is the most commonly used construction material in Chad, the purpose of the present study is to characterize it as a whole, and to characterize its thermo physical properties. Various tests were conducted on it and mainly on its thermo-physical characteristics, as these significantly affect the comfort of a house. The study focused on earth taken from a climate zone of Chad, mixed with straw at a given proportion or used alone. Different values of thermal conductivity and diffusivity of these materials as well as their variations in relation with water continence are presented.

Approach Thermal Habitat Assessment in N’Djamena in Chad

“…They therefore involved in the heat balance of the volume of air inside the thermal zone studied. These expenses are mainly due to occupants, machines and lighting are considered according to Figure 4 [10].…”

“…Fanger proposed formulas for calculating each of the speaker terms in equation (10) the thermal balance of the body in a state of thermal comfort. These formulas were derived from experimental studies involving a large number of subjects (1300) and include both physical and physiological measurements and the record subjective assessments of the test subjects.…”

Comparative Analysis of Local Materials Effects on Two Buildings Thermal Behaviours in Sahelian Climate

“…The earth used in building is either fired or raw, but in most cases reinforced with fibrous materials of plant origin such as straw, hemp and agricultural waste [4,5,6,7]. However, many researchers have studied the thermophysical characteristics of these composite materials and have shown that they have sufficient mechanical strength and also very high thermal insulation properties [8,9,10,11]. Studies have also carried out on stabilised earth with a small percentage of cement [1,2,8].…”