| 摘要 |
PURPOSE:To obtain a simple apparatus, by putting a test piece with chucks between both one end parts of a pair of V-shaped load frames joined rockingly both top parts with a pin and providing a steel rod for applying the tension on another end part. CONSTITUTION:A load frame 1 consists of a pair of V-shaped upper frame 1a and lower frame 1b and both top parts are joined rockingly with pins 4 and then, both end parts of a test piece 3 are held between both one end parts of the frames 1a, 1b with chuckes for test piece support 5a, 5b which is freely rockable with pins 4. A steel rod 6 for loading is pierced into another ends of the frames 1a, 1b and the rod 6 is tightened to both frames 1a, 1b with a nut 8 together with a load cell 7. A fixed tesnion load is acted on the test piece 3 by tightening the nut 8 while detecting the load by the cell 7 and giving a prescribed load. Thus, a creeping condition of concrete is known. |
