Previously, we proposed a process that produces porous glass fiber-reinforced ceramics by mixing clay and crushed waste glass fiber-reinforced plastic (GFRP) before the mixture is fired. This study was aimed at the development of a pavement block that can moderate the heat island phenomenon by using ceramic properties. Various ceramic specimens were produced by changing the mixing ratios of the clay and GFRP. Compressive, bending and freezing and thawing tests were carried out on the samples. Temperature changes caused by the radiant heat emitted when ceramic surfaces were irradiated with infrared light were measured. The apparent thermal conductivity of the ceramic was also measured. The results confirmed the development of a ceramic with sufficient strength for use as a pavement block. The ceramic had a good freeze damage resistance, could absorb water because of its porous nature and could decrease radiant heat by evaporation. The thermal conductivity of the ceramic made from clay and waste GFRP was also lower than that of mortar and of ceramics made from clay alone. This ceramic may be used in pavement blocks to counteract the heat island effect.
