Rehabilitation of light-weight reinforced concrete ribbed slab exposed to fire using basalt textile reinforced mortar

By utilizing less concrete, the globe is currently heading toward sustainability, which reduces the weight of each unit. Furthermore, for design building, materials with a higher strength-to-weight ratio are required. Leading sustainability amenities include lightweight concrete (LWC) and ribbed slabs. To evaluate how Repairing a lightweight reinforced concrete ribbed slab that was exposed to fire and repaired by basalt textile-reinforced mortar (BTRM). This research created an experimental study. Five of the one-way ribbed slabs were made of light-weight concrete using (LAVA) aggregate. The usual fire curve (ASTM-E119) was followed when burning these slabs. After being exposed to fire for roughly (60 and 30) minutes. The slabs cooled using water and air and strengthened by basalt textile-reinforced mortar (BTRM) and again exposed to fire. After that, these slabs were tested under two-point loads. The results demonstrated that the use of light weight (LAVA) produced lightweight concrete (LWC), which had a density of (1985) kg/m3 and a cylinder compressive strength of (42.2) MPa.Slabs were burning then strengthened by basalt textile-reinforced mortar (BTRM) show a notable increase in load capacity and enhanced repaired slab performance.