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PROCEDURE FOR REBOUND HAMMER TEST ON CONCRETE

Procedure for rebound hammer test on concrete structure starts with calibration of the rebound hammer. For this, the rebound hammer is tested against the test anvil made of steel having Brinell hardness number of about 5000 N/mm2. After the ...

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REBOUND HAMMER TEST ON CONCRETE

Rebound hammer test (Schmidt Hammer) is used  to  provide  a  convenient  and rapid indication of the compressive strength of concrete. It consists of a spring controlled mass that slides on a plunger within a tubular housing. The operation of rebound hammer ...

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TESTING OF CONCRETE CORES

TESTING OF CONCRETE CORES The testing of cores is carried out according to the ASTM Standard C 42. The diameter of core specimens for the determination of concrete compressive strength should preferably be at least three times the nominal maximum size ...

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TESTS ON HARDENED CONCRETE IN STRUCTURES

Various tests on Hardened Concrete is done to ensure the design strength of concrete and quality of concrete construction is achieved. Normal tests on Hardened Concrete:The main destructive tests on hardened concrete are as follows.(a) Cube test: Compressive strength of ...

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MEASURING REINFORCEMENT CORROSION IN CONCRETE

Measurement of steel reinforcement corrosion in concrete is essential to analyse the strength and durability of structure.  Currently no instrument or technique  is  available,  at present, which can measure the extent of corrosion of steel. However,  measurement  of  concrete  properties,  such  ...

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CONCRETE CUBE TEST RESULTS ACCEPTANCE

ACCEPTANCE OF CONCRETE CUBE TEST RESULTSACI-5.6 2008 requires that all the tests to be performed on fresh, hardened or old concrete are to be performed by qualified field testing technicians. They should collect and prepare all the specimens for testing ...

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