The hemp concrete in building is an old technique that is experiencing a new boom today in France thanks to its energy performance throughout the life cycle of a building (phase of construction, occupation and demolition). This strong point makes hemp concrete a promising material for sustainable building in the future. This concrete is a relatively new renewable and green building material in Canada and unused in West Africa, specifically in Burkina Faso. However, hemp concrete is part of the current trend in the use of biobased materials. Indeed, it is a filling and non-carrier material obtained by mixing hemp, lime and water. It has a favorable ecological footprint, contributing to the reduction of GHG emissions. As a result, the integration of this concrete in Canadian and Burkinabe building is essential and beneficial from a sustainable development point of view. This work involves finding a traditional construction alternative by integrating new materials that has an ecological footprint to improve the hygrothermal performance of the building envelope. Hence our interest to study the performance of hemp concrete as a material and its integration in the building envelope. The results of the simulation with the WUFI Pro 6.2 software for study conducted on walls the city of Montreal revealed that hemp concrete has excellent heat and moisture regulation quality, so no degradation problems caused humidity is observed after the simulation for water infiltration of less than 5m3 / m2h. However, for a driving rain rate of more than 5%, whether the wall is made of glass wool or hemp concrete, its external side does not support this quantity for all year long. For the city of Dori, the results of the simulation with the WUFI Pro 6.2 software of the studied walls revealed that the hemp concrete has an excellent quality of regulation of the heat whatever the fraction of solar radiation incident sent to its outer surface in addition to the outside temperature. In fact, the interior surface temperatures of hemp concrete walls are around 21.6 ℃ to 24.5 ℃, making the habitat pleasant to live compared to compressed earth brick and cement block walls, of which the indoor temperature is between 21 ℃ and 27 ℃ respectively 19 ℃ and 29℃. In conclusion, hemp concrete seems to be an excellent material to integrate into Canadian and Burkinabe building while respecting building codes.
Kabore, A. (Author),
Maref (Supervisor) &
Ouellet-Plamondon (Co-supervisor),
20 Jan 2020Student thesis: Master's thesis › Master in Engineering: Engineering