Table of contents
Chapter1 - General Description ........................................................................................................... 4
1.1. Applications ....................................................................................................................... 4
1.2. Basic principle ................................................................................................................... 4
1.3. Structure of Concrete Test Hammer .................................................................................. 4
1.4. Main technical specifications ............................................................................................ 5
Chapter2 - Operating and Testing Methods of Concrete Test Hammer .............................................. 6
2.1. Operating method of Concrete Test Hammer ................................................................... 6
2.2. Testing method of Concrete Hammer ............................................................................... 7
2.2.1. Preparatory process of test ................................................................................................ 7
2.2.2. Rules for resilience test ..................................................................................................... 8
2.2.3. Determination of carburized depth .................................................................................. 10
Chapter3 - Processing of test data ..................................................................................................... 12
3.1. Calculation of resilience value ........................................................................................ 12
3.2. Calculation of carburized depth ...................................................................................... 14
3.3. Evaluation of concrete strength ....................................................................................... 14
Chapter4 - Maintenance of Concrete Test Hammer .......................................................................... 17
Appendix 1 - Common faults of the Concrete Test Hammer and the analysis on their causes ......... 18
Appendix 2 - Conversion table of concrete strength value of test zone ............................................. 20
