Accepting inspections of Phuket hotel buildings
M.A.N. Building inspection & Design Co.,Ltd
Accepting inspections of Phuket hotel buildings Accepting inspections of Phuket hotels M.A.N. Building inspection & Design Co.Ltd : The registration Juristic number: 0835563011294 Schmidt Rebound Hammer Testing Steel scanning works to determine the location Steel scanning allows us to know the location. Size and spacing of reinforcing steel in concrete for design or drilling into the floor for additions. It takes an expert to test. Schmidt Hammer Test Phuket Testing the compressive strength of concrete can be done through various methods, including both destructive and non-destructive approaches. The use of the Schmidt Rebound Hammer falls under the category of non-destructive testing (NDT), which was developed by German engineers in 1948. It relies on the principle of mass-spring reflection, and the result displayed on the indicator is known as the Rebound Number. This value is then compared with a table to determine the corresponding Compressive Strength. This process adheres to the standards set by the American Society for Testing and Materials (ASTM) C805. Testing the compressive strength of concrete using the Schmidt Rebound Hammer is a widely used method nowadays due to its convenience and speed in data collection. However, it has limitations, such as requiring a smooth surface with a minimum thickness of 10 centimeters. Testing Procedure: Inspect the condition of the surface to be tested. The surface for testing must be smoothed, as uneven surfaces may yield lower Rebound Numbers, while rough surfaces may result in higher Rebound Numbers. Specify the test positions for 16 points, with each point separated by at least 30 mm, as illustrated in the diagram. Conduct the test using the Rebound Hammer perpendicular to the surface being tested. Record the Rebound Number and the direction of compression, considering four directions: upward, downward, parallel to the surface, and at a 45° angle to the surface. During the test, press the Plunger of the Rebound Hammer against the surface of the concrete until it makes contact and generates an internal impact sound. Note the resulting Rebound Number. On average, the Rebound Number of all 16 values should not deviate by more than ±7 from the mean Rebound Number. If the Rebound Numbers obtained from the test differ from the mean by more than ±7, the data for that test cannot be used to calculate the average. A new test must be conducted, using a different surface for testing, and ensuring it is at least 30 mm away from the previously tested locations, until all values fall within the ±7 range of the mean. Convert the average Rebound Number and the corresponding testing directions into Compressive Strength values by comparing them with the graph illustrating the relationship between Compressive Strength and Rebound Number. Contact us. (Tel). 09-2561-5692. Line ID@manbuilding , Office hours: Monday to Saturday, 08:00 - 17:00.
