RCC Pile

A pile is a slender element cast in the ground or driven into it. Since pile construction as well as the final product are mostly invisible, engineers have often questioned their integrity, i.e. their compliance with project drawings and specifications. In fact, experience   [1]   has shown that in piles, of all kinds flaws may occur. The purpose of integrity testing is to discover such flaws before they can cause any damage. Historically, pile integrity was investigated by direct methods. [2]  These included external methods such as excavation around the pile and internal or intrusive methods, such as core-drilling . While excavation may be effective in exposing flaws in the outer part of the pile, it is usually limited to a depth of a few meters. Core drilling, on the other hand, can be carried out to a large depth provides full information, but only for a very small fraction of the pile volume. Indirect methods, or imaging, were first developed in the early 1970s. Thes...

  Non-destructive tests on concrete can be understood as the type of test on concrete structures that are employed to measure the strength of the concrete without actually destroying the structure. The primary objective of such a test is to evaluate the strength and durability of the existing concrete structure as well as for the identification of cracks and defects. One such type of non-destructive test on concrete structures is the Profometer test. ** Fast and accurate rebar detection , cover and diameter size measurement Profometer test can be defined as the non-destructive test conducted on the concrete structures to determine the size and location of the reinforcements and  concrete  cover rapidly and efficiently. This test is also commonly known as the rebar locator test. The instrument used to conduct this test is known as profometer or rebar locator. The rebar locator test is the fastest and the easiest method of detecting the reinforcement bars in concrete. The ...

  Introduction An  ultrasonic pulse velocity (UPV) test  is an  in-situ ,  nondestructive  test to check the quality of  concrete  and natural rocks. In this test, the strength and quality of concrete or rock is assessed by measuring the velocity of an  ultrasonic pulse  passing through a concrete structure or natural rock formation. Ultrasonic Pulse Velocity (U.P.V) This test is conducted by passing a pulse of ultrasonic through concrete to be tested and measuring the time taken by pulse to get through the structure. Higher velocities indicate good quality and continuity of the material, while slower velocities may indicate concrete with many cracks or voids Ultrasonic testing equipment includes a pulse generation circuit, consisting of electronic circuit for generating pulses and a transducer for transforming electronic pulse into mechanical pulse having an oscillation frequency in range of 40 kHz to 50 kHz, and a pulse rece...

  Importance and Rebound Hammer Test : It is often necessary to test concrete structures after the concrete has hardened to determine whether the structure is suitable for its proposed structure. Such testing should ideally be done without damaging the structure, which is called a Non-destructive Test on concrete. Rebound Hammer is one of the methods of testing for the strength of concrete . Rebound hammer is used for checking the compressive strength of concrete (as per IS-13311(Part-2)/92 ) at a certain age of concrete. Rebound Hammer Test The object of the test : i) assessing the likely compressive strength of concrete with the help of suitable correlations 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 iv) assessing the quality of one element of concrete in relation to another. NOTE - The rebound hammer method can be used with greater confidence...