ASR損傷を生じたRCはり部材の正負交番荷重下の曲げ・せん断特性
2001 年 50 巻 8 号 p. 883-888
詳細
2001 年 50 巻 8 号 p. 883-888
Flexural and shear behavior of reinforced concrete beams damaged by alkali-silica reaction (ASR) was investigated under monotonous and reversed cyclic loads, mainly focused on the shear resistant mechanism after flexural yielding. In case under the monotonous loads, shear capacity of the beams damaged by ASR was rather increased by the introduced chemical prestress in spite of the strength reduction of concrete due to the existence of expansive cracks. In case under the reversed cyclic loads, the introduced chemical prestress also restrained the reduction of concrete shear capacity successfully within the deformation of 5σy. After that deformation level, however, the effect of chemical prestress almost disappeared and the ultimate deformation tended to become somewhat smaller compared with that of the beams without ASR damage.
