NDT JAMES-MANUAL REBOUND HAMMER W-M-250

NDT-JAMES INSTRUMENT Product Details The W-M-250 Manual Test Hammer is the traditional instrument used for the non-destructive testing of hardened concrete. This easy-to-use instrument provides a quick and simple test for obtaining an immediate indication of concrete strength in various parts of a structure. The minimum verifiable strength is 1400 PSI ( 10 MPa) to approximately 9000 PSI ( 62 MPa) . All concrete test hammers measure the surface hardness of the material they are testing; this is then correlated to concrete compressive strength. The manual concrete test hammer, aka rebound hammer, schmidt hammer, swiss hammer, sclerometer, is the most widely used non destructive instrument for compressive strength determination. However, it typically has the largest coefficient of variation; therefore its result should be verified with another non destructive test such as the V-Meter MK III. Typical Correlation Charts for James Instruments Rebound Hammer Applications Manual hammers for the quick and easy determination of the strength of concrete. Features and Benefits Easy to use manual calculation of the mean rebound number. All James Test Hammers conform to: ASTM C-805 USA BS-1881-202 Grt. Brit. ISO/ DIS 8045 Intl. EN 12 504-2 Europe ENV 206 Europe NFP 18-417 France B 15-225 Belgium JGJ/ T 23-2001 China JJG 817-1993 China