bridge concrete testing hammer

Detailed Product Description Portable concrete Rebound Tester HT225A widely use Concrete Test Hammer HT-225A with easy Correction, Maintenance and Repair ISO/DIS Concrete Test Hammer HT-225A with Big Memory for Civil Engineering, Construction 1. INTRODUCTION: When testing the strength of concrete, the concrete test hammer uses a certain elastic force to transit the impact force of an impact hammer to the surface of concrete, its initial kinetic energy redistributes, a part of