| Summary: | 碩士 === 中原大學 === 土木工程研究所 === 86 === This research is to investigate the bonding strength and behavior of highperformance concrete (HPC) after the concrete is subject to different high temperature and duration. To start, previous researches on fire resistanceof ordinary and high performance concrete are collected. Trial mixes are designed in order to find a most suitable mix proportion of high performanceconcrete. This mix is then used to produce test specimens for experiments.The design of HPC is based on a slump of 25±2℃, no vibration required whenplacing, and a compressive strength of 560kgf/cm2. All specimens, afterproperly cured, are oven-dried. Then they are subjected to a specific hightemperature and duration time before testing.Test results show that,splitting of specimens when subjected to high temperature can be preventedby probably oven-drying procedures. For the effect of temperature in firehazards, the main reduction range for both the compressive strength and bonding strength happens between 440℃ to 800℃. For the effect of durationtime, the main reduction in strength happens in the first two hours.When duration is over two hours and temperature over 700℃, there is notmuch strength left. When temperature is over 700℃ and duration over 3 hours, the failure mode of bonding specimens changed from ''splitting failure'' to''pull-out failure''.Keywords：High Performance Concrete , Bonding Stress , High Temperature Duration , Fire Damaged.
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