FIRE RESISTANCE AND FIRE SAFETY OF ECO-ARBOLITE CONCRETE

The article examines the fire resistance and fire safety of arbolite concrete ‒ a modern eco-friendly building material that combines the properties of concrete and wood. The aim of the study was to determine its resistance to high temperatures and the possibility of enhancing fire safety through composition modification. Experimental tests were conducted in laboratory conditions using a gas burner producing a flame at 1400°C. Samples measuring 500×500×100 mm were exposed to fire for 120 seconds, with surface changes recorded every 30 seconds. The study included both untreated arbolite concrete and samples treated with a multifunctional modifier. The results showed that untreated arbolite concrete belongs to fire resistance class G1, does not support combustion, but undergoes certain thermal damage. The maximum charring depth was less than 1 mm, indicating high thermal stability under short-term fire exposure. Meanwhile, the samples treated with a multifunctional modifier showed no signs of charring and were classified as class G0‒non-combustible materials. These findings confirm the effectiveness of using multifunctional modifiers to improve the fire resistance of arbolite concrete. Due to the modifier impregnation, fire-resistant properties extend throughout the entire thickness of the material, making it safer for use in facades and other structures with high fire safety requirements. The practical significance of this study lies in the potential application of arbolite concrete with enhanced fire-resistant properties in modern construction, contributing to increased fire safety in buildings. This will allow improving the regulatory framework and will promote the spread of eco-arbolite concrete as a promising building material with improved fire protection characteristics.