抄録
This paper presents experimental study on the behavior of cast-in-place anchor bolt embedded in concrete subjected to high temperatures up to 500℃, with the specific objectives to obtain basic experimental data and to examine the response of cast-in-place anchor bolts to high temperature exposure. The specimens with two kinds of embedment depth of anchor bolt, 3cm and 5cm, are prepared. Under constant tensile load applied to the anchor bolt, the specimen is heated and the relation between the pull-out strength and temperature at fracture is examined. As to the process of heating, two different rate of temperature elevation, 10℃/min. and 0.75℃/min, were prepared. As a result of the test, regardless of different parameters studied in this experiment, comparison with the earlier research results indicated that identical ratio of pull-out strength of anchor bolt was obtained when the same temperature of concrete surrounding the bolt head was applied.
