| 摘要 |
<P>PROBLEM TO BE SOLVED: To quickly perform a breakage separation test of a columnar portion from a concrete surface without using adhesive in a testing method and a test jig of a structure allowed to be directly grasped, such as a concrete structure, asphalt pavement and a tile structure. <P>SOLUTION: The test jig is composed of a cylindrical outside wedging member 10 and a plurality of inside wedging members 12 separately arranged along the inner periphery of the outside wedging member 10. The outside and inside wedging members 10, 12 are respectively provided with facing conical surfaces 10A, 12A. Predetermined force of a vertically separating direction is applied between the outside and inside wedging members 10, 12 and the inside wedging members 12 are displaced in the inner direction of a radius under wedging action between the conical surfaces 10A, 12A and pressure-welded to a concrete columnar portion 56. A clamp 62 of a construction research type tensile tester is connected to the outside wedging member 10, and a separation or breakage test of the concrete columnar portion 56 is performed by applying tensile force. <P>COPYRIGHT: (C)2012,JPO&INPIT |
