Thermal fatigue performance of steel fiber reinforced polymer high strength concrete

摘要

To discover the fatigue behavior and durability of the new type fiber concrete named "steel fiber reinforced polymer high strength concrete (SFPHC)", considering climatic conditions in Guangdong Province, using research method of theoretical analysis combined with experimental study, thermal fatigue behavior of SFPHC used in bridge superstructure in three different temperatures (20°C,50°C,80°C) is discussed and compared with concrete C60 which has similar static mechanical properties at room temperature. The results show that the thermal fatigue performance of SFPHC can be described effectively with the proposed computing formula, and the fatigue performance has been greatly enhanced compared with the C60 concrete.