Explain in detail the non-destructive testing of concrete using Rebound hammer.
Non-destructive testing of concrete using Rebound hammer Rebound hammer test is used for estimation of concrete strength and for comparative investigations. It also used to measure elastic reboundery concrete.
The Rebound hammer consists of a spring control hammer which slides on, a plunger within ,a tubuler housing.
Working process: When the plunger is pressed against the surface of the concrete, the mass rebound from the plunger. It retracts against the force of the spring. The hammer influence against the concrete and the spring control mass rebounds, taking the rider with it along the guide scale. By pushing a button, the rider can be held in position to allow the reading to be taken. The distance travelled by the mass, is called the rebound number. The number is indicated by the rider moving along a graduated scale.
Each hammer differs considerably in performance and needs calibration f. The test can be conducted horizontally, onwards or at vertically- upwards or any intermediate angle. At each angle, the rebound number will be different for the same concrete and will require separate calibration of correction.
Non-destructive testing of concrete using Rebound hammer Rebound hammer test is used for estimation of concrete strength and for comparative investigations. It also used to measure elastic reboundery concrete.
The Rebound hammer consists of a spring control hammer which slides on, a plunger within ,a tubuler housing.
Working process: When the plunger is pressed against the surface of the concrete, the mass rebound from the plunger. It retracts against the force of the spring. The hammer influence against the concrete and the spring control mass rebounds, taking the rider with it along the guide scale. By pushing a button, the rider can be held in position to allow the reading to be taken. The distance travelled by the mass, is called the rebound number. The number is indicated by the rider moving along a graduated scale.
Each hammer differs considerably in performance and needs calibration f. The test can be conducted horizontally, onwards or at vertically- upwards or any intermediate angle. At each angle, the rebound number will be different for the same concrete and will require separate calibration of correction.
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