... beam,truss. Used in civil engineering,construction,etc HT-225A Concrete Rebound Strength TesterDescription: When testing the ... height of resillience and the concrete strength. HT-225A concrete strength tester is widely used in ... and bridge. Compared to other nondestructive testers, HT-225A concrete strength tester is an economical and ... 2, ENV 206, DIN 1048 part 2, ASTM C 805, ASTM D 5873, NFP 18-417, B ...