As a new alternative to OPC, investigation into the fire endurance of geopolymer concrete is of utmost
importance in order to ensure safety. Geopolymer and OPC concrete panels of 125–175 mm thickness
containing a layer of steel mesh were exposed to fire for 2 h. Test results show higher heat transfer rate
and less cracking and spalling in the geopolymer concrete specimens. The residual load capacity was
between 61% and 71% for the geopolymer and between 50% and 53% for the OPC concrete panels.
Thus, the reinforced geopolymer concrete elements demonstrated superior fire endurance than the
OPC counterparts.