Abstract
This study investigated aged deterioration of tensile and shear strength of adhesive bond used for seismic reinforcement of tombstones. First, accelerated weathering test was conducted in order to make test specimen of 5, 10, 20, 30 years old in addition to test specimen of 0 year old. Then, uniaxial tensile test and cyclic shear test was conducted in order to measure the tensile and shear strength characteristics. It was found that the tensile strength became smaller as the test specimen becomes older after 5 years. The shear strength was almost the same among the test specimen of 0, 1 and 20 years old. Finally, seismic simulation of tombstones with different bonding area and different age is conducted. There is a tendency that the tombstone with larger bonding area and with younger age are less likely to overturn.
