60 – 90Mpa Concrete Testing Equipments 5.5J HT-550 High Strength Test Hammer

Name: High Strength Rebound Hammer Standard: GB/T 9138-1988 Impact Energy: 5.5J Test Range: 60~90Mpa Rebound Value: 83 /-2 Tension Spring Stiffness: 1100N/m High Light: 5.5J Concrete Testing Equipments , 90Mpa Concrete Testing Equipments , High Strength Test Hammer   HT-550 High Strength Test Hammer To Test The Bridge Component Compressive Strength   HT-550 High Strength Test Hammer   Application: It is used to test the compressive strength of building concrete components, bridge and so on. It is designed specifically for the non-destructive testing of hardened concrete structures. The instrument is used for quality Inspection Company, site testing or sampling and laboratory center.   Standard: GB/T 9138-1988 Concrete test hammer JJG 817-93 Concrete test hammer JGJ/T23-2011 Technical specification for inspecting of concrete compressive strength by rebound method ASTM C805/C805M-2008 Standard Test Method for Rebound Number of Hardened Concrete BS 1881 Testing concrete Part 202 Recommendations for surface hardness testing by rebound hammer BS EN 12504-2:2001 Testing concrete in structures-Part 2: Non-destructive testing – Determination of rebound number   Parameters:   Item Names Details 1 Standard impact energy 5.5J 2 Test range 60~90Mpa 3 Rebound spring impact length 100mm 4 Average rebound value on steel anvil Rm 83 /-2 5 Sphere radius of rebound pole SR 18mm 6 Tension spring stiffness 1100N/m 7 Size Φ54*350mm 8 Weight About 1.28kg   Features: 1. Pointer slider is outside ring structure, easy to adjust friction, and to assure equal friction between pointer slider and axis. 2. Shell uses super hard aluminums, protect hammer from damage on site work and prolong use life. 3. Center rod uses imported material, high precision and wear proof