HUATEC GROUP CORPORATION
HUATEC GROUP CORPORATION Professional Non Destructive Testing Equipment
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Test Range 20-110Mpa Apply To C50-C100 Concrete Test Hammer HTH-450 High Strength
Brief introduction:
A test hammer impacts, with a predetermined amount of energy, a steel plunger in
contact with a surface of concrete, and the distance that the hammer rebounds is
measured .
Along with the development of construction! high building skyscraper becomes more and more, application of high strength concrete also becomes more popular in the future, which needs a special test hammer to test high strength concrete. HT-450 test hammer was developed from HT-25, used to/ test high strength concrete, and test range is 20-110MPa. HT-450 test hammer is used to test high strength concrete compressive strength like high rise, bridge. And apply to C50-C100 concrete
Work temperature of the test hammer should be (-4+40) ℃.
Parameter:
| Test range | 20~110Mpa |
| Standard impact energy | 4.5J (kgf. m) |
| Impact spring stroke | 100mm |
| Impact spring work length | 160mm |
| Impact stroke | 100mm±0.5mm |
| Tension spring rigidity | 900±40N/m |
| Calibration value on test anvil | 88±2 |
| Sphere radius of impact pole | SR35mm |
| Size | ф54×350mm |
| Weight | 1.28KG |
Technical requirements:
1.The instrument measuring rebound value must use energy 4.5J test hammer. The rebound hammer impact length is 100mm. The spherical radius of top of rebound pole is 18mm. The test hammer must have certification of manufacturer and detection institution. It must have product name, type,manufacturer name or brand, manufacturing number and date of production.
2. Test hammer must confirm following standard status:
①Horizontal impact. When impact unhooking, the impact energy must be 4.5J,.
②When the hammer impact the impact-pole, impact spring should be free status, and impact-hammer at the position of 0 point.
③On a test anvil of HRC 60+/-2, calibration value should be 88+/-2.
