Fig. 6
From: Effect of Wall Thickness on Thermal Behaviors of RC Walls Under Fire Conditions
Photographs of specimens after fire test for 2 h. a W15 (left exposed surface, right unexposed surface). b W20 (left exposed surface, right unexposed surface). c W25 (left exposed surface, right unexposed surface). d W15V (left exposed surface, right unexposed surface). e W20V (left exposed surface, right unexposed surface). f W25V (left exposed surface, right unexposed surface).