Rebound hammer types


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A simple equipment known as Rebound Hammer or Schmidt Hammer is used for this purpose. Surface hardness measured during the test give an idea about the soundness and quality of cover concrete.

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Rebound hammer types

  1. 1. Rebound Hammer  A simple equipment known as Rebound Hammer or Schmidt Hammer is used for this purpose. Surface hardness measured during the test give an idea about the soundness and quality of cover concrete.  Locations having very low rebound numbers indicate weak surface concrete and may be affected by corrosion. The quality of concrete may be interpreted as shown in the above table.
  2. 2. Our Products Digital Rebound Hammer Concrete Rebound Hammer Digital Schmidt Hammer Schmidt Rebound Hammer RCPT Rebound Hammer Types
  3. 3. Hammer  Concrete Test Hammer, ideally suited for on-site tests of concrete and is widely used instrument for analyzing the uniformity and compressive strength characteristics of concrete structures and Detection of weak spots in the concrete. Rebound values are read from a scale for subsequent calculation of the mean. Compressive strength values can be read from a conversion diagram.
  4. 4. Digital rebound hammer  Digital test hammers are an advanced, completely automated system for estimating concrete compressive strength. Its calculation, memory and recording functions allow for quick, easy and accurate test results.  Discard values for multiple test results can be set; the mean, median and compressive strength can also be calculated. The addition of modern microprocessor technology allows the data to be stored, printed and transferred to a personal computer for further analysis, or inclusion in your reports.
  5. 5. Hammer  The Schmidt rebound hammer is principally a surface hardness tester. The Original Schmidt is available in models with different impact energies, each test hammer designed for a specific test application.  The Romans were aware of the fact that good mortar (opus caementicium) is hard and of a high compressive strength. They tested its quality subjectively by scratching the surface with an iron nail.  But only in the mid-20th century was this know-how utilized. A device was invented which made non-destructive compressive strength testing feasible.
  6. 6. hammer  Digital Schmidt rebound hammer is the most advanced instrument in its category with follows:  The instruments body lies very comfortably in the hand. The display is highly readable under any conditions.  A two-layer seal prevents dust and dirt from penetrating to the interior of the instrument.  The forward and the rebound velocity of the hammer mass are both measured in close proximity to the point of impact. The rebound value requires no angular correction.  A larger number of measurement points can be easily collected by the instrument and automatically evaluated according to statistical criteria.
  7. 7. RCPT-Rapid chloride permeability test  The PROOVE it system is used to evaluate the resistance of concrete to the ingress of chloride ions in two ways: By determining how easy it is to force chloride ions into saturated concrete by applying an electrical potential across a test specimen in accordance with AASHTO T 277 or ASTM C1202. This is known as the "Coulomb Test" or the "Rapid Chloride Permeability Test (RCPT)." By measuring the penetration depth of chloride ions, after an electric potential has been applied to the specimen in accordance with NORDTEST BUILD 492 (Chloride Migration Coefficient from Non- Steady State Migration Experiments) to determine the "Chloride Migration Coefficient," which can be used to estimate the chloride diffusion coefficient for service life calculations.
  8. 8. Address: BA-15, Mangolpuri Industrial Area Phase-II Delhi-110034(India) Ph No: +91-11-49491414/15 Email: Mobile: +91- 9717387700