Heat resistance of AFRP-cement mortar

The flexural resistance properties of AFRP - cement mortar treated under different temperatures were studied by means of thre e-point bending test.The experimental results indicated that the flexural resis tance strength of AFRP-cement mortar increases with the temperature rising belo w 200 ℃.But it begins to decrease when the temperature rises to 250 ℃ and tends to equilibrium.At 60,150,200 and 250 ℃ respectively,these fl exural resis tance strength is lower than these at room temper ature,and obviously decreases with the rising of temperature.With the rising of temperature,the fracture models of AFRP-cement mortar take a turn from accumula tion fracture with ductility to brittle collapse.