Fire behaviour of hemp, clay and gypsum-based light biobased concretes and renders

Greenhouse gas emissions from cement manufacturing account for about 8 to 10 percent of total CO2 worldwide. To reduce these emissions, researchers are developing new concrete techniques and processes high energy consumption environmental impacts. Biobased concretes eco-friendly insulating materials building industry that can respond this problem. However, there is a lack knowledge regarding how plant-based fillers ignite contribute heat release in case fire. In work, the fire behaviour series hemp-based earth and/or gypsum covering large range densities (180–1500 kg/m3) investigated using cone calorimeter at an incident flux 50 kW/m2. The performances mainly monitored by thermal inertia materials. Only lightest with density threshold ignition occurrence around 500 kg/m3. For 261 kg/m3, critical earth-hemp was found be close 27 flaming period remains very short all cases.