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REBOUND HAMMER TEST. 1. Objective And Principle. Objective: The rebound hammer method could be used for: assessing the likely compressive strength of concrete with the help of suitable corelations between rebound index and compressive strength, assessing the uniformity of concrete,
The rebound hammer test is not intended as a substitute for standard compression test, but as a method for determining the uniformity of concrete in the structure and comparing one concrete with another.
ASTM C805, “Standard Test Method for Rebound Number of Hardened Concrete”, summarizes the procedure as “A steel hammer impacts, with a predetermined amount of energy, a steel plunger in contact with a surface of concrete, and the distance that the hammer rebounds is measured.”
Rebound Hammer and Windsor Probe Tests are among the most widely used NDT methods regarding concrete strength assessment. In this paper, Rebound Hammer and Windsor Probe Test results were combined to determine the compressive strength of concrete using respond surface method. As a result, a combined ND...
The rebound hammer method could be used for: (i) assessing the likely compressive strength of concrete with the help of suitable corelations between rebound index and compressive strength, (ii) assessing the uniformity of concrete, (iii) assessing the quality of the concrete in relation to standard requirements, and.
1.1 This test method covers the determination of a rebound number of hardened concrete using a spring-driven steel hammer. r inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; th. refore, each system shall be used independently of the other. Combining values from th.
Introduction. In Civil Engineering practice, the estimation of concrete quality is needed both for quality controls of new buildings and for rapid surveys of existing structures. Among the NDT and MDT procedures, the Schmidt, or rebound, Hammer test is largely the most commonly used worldwide.
