plastic formwork panels for concrete Impact Tests
The plastic formwork panels for concrete impact strength of panels inspected does not directly demonstrate a design parameter, longitudinal and transversal specimens have been prepared in plane and out of plane directions of the panel to perform Charpy tests for it may give an idea about its impact resistance. Since the panel is porous, the main resistance of plastic formwork panels for concrete is put up by the panel coat and in terms of the solubility of experiment results, unnotched specimens have been used in tests.
Plastic formwork panels for concrete Longitudinal and transversal samples cut parallel and perpendicular to panel plane with Charpy impact test apparatus are shown in Figure 7 and test results are given in Chart 3. As it can be seen from the test results, impact resistance of the panel is the highest out of plane and in longitudinal direction (strong section); and the lowest in plane and in horizontal direction (weak section). Since the panels subjected to tests are unnotched, it is expected that standard deflection values in Chart 3 are higher than usual, yet, when a notch is made on panels, specimens are tend to weaken and it is likely to cause solubility problems like the ones that can be seen in ‘C’ set results.
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