抄録
In order to find the basic fatigue properties of reinforced concrete, the authors have been engaged in making, for several years, the fatigue test with various kinds of reinforced concrete beams having different types of failure. In this paper, the diagonal tension fatigue test is mainly dealt with. The test beams were made of both lightweight aggregate concrete and normal concrete.
The result obtained from this test is discussed, and compared with the one obtained from the test of beams having another type of failure.
It was interesting to notice that no matter of whatever type the failure was, nor any matter whatever kind of concrete was used, the same percentage of fatigue endurance of beams to their static endurance was obtained in these fatigue tests. Failure occurred more suddenly in the beams made of lightweight aggregate concrete than in the normal reinforced concrete beams.
Wherever the beams made of lightweight aggregate concrete are employed, therefore, efficient reinforcement construction to diagonal tension is indispensable.
