Types of test done on reinforcement steel bars

Types of test done on reinforcement steel bars
Following tests are done on reinforcement steel bars from third party laboratory as per the frequency set for testing.

Mechanical Test:
Area
Gauge length
Final length
0.2 % Proof load
Ultimate load
0.2% Proof Stress
U.T.S
% Elongation
Fracture
Bend 180
Rebend 
Unit Weight

Chemical Test:
Carbon
Sulphur
Phosphorous

Following tests are done on reinforcement steel bars from construction site laboratory as per the frequency set for testing.
Mechanical Test:
Area
Bend 180
Rebend 
Unit Weight


In general frequency for test are set as per following
For third party testing
Its done for every lot of reinforcement steel bar received or done at every 200MT of steel receiving for each diameter.

For construction site laboratory
Its done for each lot of steel received at site.

Apart from above reinforcement steel bars are also checked for 
Coating of mud, oil and other foreign material - if present bars to be used after cleaning or should be rejected.
Amount of rusting and scaling on it - a small rusting on reinforcement steel bars are good for bonding between cement and concrete.
If scaling on reinforcement steel bars observed - it should be rejected.

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