01) Schmidt Hammer Test
Schmidt hammer test is mostly used to determine the compressive strength of any erected concrete structure. And that is also called as a Swiss hammer or a rebound hammer. Schmidt hammer is a device to measure compressive strength of concrete or rock, mainly using surface hardness and penetration resistance. This instrument portable and easy to handle in any places.
Test Apparatus N-Type Schmidt Hammer Carborundum Stone 150mm×150mm×150mm G30 One month aged concrete Weight Scale Compressive Strength Machine
1) The selected concrete cube surface should be cleaned by the using carborundum stone.
2) The 12 points should be marked on the concrete cube and also mark adjoining sides.…show more content… After 28 days G 30 concrete, compressive strength should be achieved 100% from the 30N/mm2.
Half-Cell Corrosion Test
2.1…show more content… Most important thing is no need further calculation in this final readings as a result of this can use anyone without having sound knowledge in the relevant instrument. Tolerance ±5 to ± 15 that is depend on corrosion, temperature and concrete finished.
When the change the purpose of the building and find the rebar diameter in case where drawings are not available moment. The cover meter provide the solution for that problems. This test is low-cost test find that details and unaffected by environmental influences.
The cover meter test is limited from some factors such as
• Cover meter only locate reinforcement steel and it can’t provide any actual information such as defects of the concrete and types of materials (condition)
• some location have two or more bars, at that certain location will receive the wrong signal there for be misinterpreted and the cover depth can be incorrectly noted that lower than true depth
Speedy Moisture Test