CC blocks Test Frequency
- Thread starter Valmiki
- Start date
Please find details as per IS code reproduced for your reference. You can refer to code which is also attached for your reference.
11 SAMPLING
11.1 The blocks required for carrying out the tests laid down in this standard shall be taken by one of the methods given in 11.2 and 11.3. In either case, a sample of 20 block shall be taken from every lot/consignment of 5000 blocks or part thereof from the same grade, size and same batch of manufacture.
11.2 The required number of blocks shall be taken at regular intervals during the loading of the vehicle or the unloading of the vehicle depending on whether the sample is to be taken before delivery or after delivery. When this is not practicable, the sample shall be taken from the stack in which case the required number of blocks shall be taken at random from across the top of the stacks, the sides accessible and from the interior of the.stacks by opening trenches from the top.
11.3 The sample of blocks shall be marked for future identification of the consignment it represents. The blocks shall be kept under cover and protected from extreme conditions of temperature, relative humidity and wind until they are required for the test. The tests shall be undertaken as soon as practicable after the sample has been taken.
11.4 Number of Tests
11.4.1 All the 20 blocks shall be checked for dimensions and inspected for visual defects (see 9.1 and 9.2).
11.4.2 Out of the 20 blocks, 3 blocks shall be subjected to the test for block density (see 9.3), 8 blocks to the test for compressive strength (see 9.4), 3 blocks to the test for water absorption (see 9.5), and 3 blocks to the test for drying shrinkage (see 9.6) and later to the test for moisture movement (see 9.7). The remaining 3 blocks shall be reserved for retest for drying shrinkage and moisture movement if a need arises.
11 SAMPLING
11.1 The blocks required for carrying out the tests laid down in this standard shall be taken by one of the methods given in 11.2 and 11.3. In either case, a sample of 20 block shall be taken from every lot/consignment of 5000 blocks or part thereof from the same grade, size and same batch of manufacture.
11.2 The required number of blocks shall be taken at regular intervals during the loading of the vehicle or the unloading of the vehicle depending on whether the sample is to be taken before delivery or after delivery. When this is not practicable, the sample shall be taken from the stack in which case the required number of blocks shall be taken at random from across the top of the stacks, the sides accessible and from the interior of the.stacks by opening trenches from the top.
11.3 The sample of blocks shall be marked for future identification of the consignment it represents. The blocks shall be kept under cover and protected from extreme conditions of temperature, relative humidity and wind until they are required for the test. The tests shall be undertaken as soon as practicable after the sample has been taken.
11.4 Number of Tests
11.4.1 All the 20 blocks shall be checked for dimensions and inspected for visual defects (see 9.1 and 9.2).
11.4.2 Out of the 20 blocks, 3 blocks shall be subjected to the test for block density (see 9.3), 8 blocks to the test for compressive strength (see 9.4), 3 blocks to the test for water absorption (see 9.5), and 3 blocks to the test for drying shrinkage (see 9.6) and later to the test for moisture movement (see 9.7). The remaining 3 blocks shall be reserved for retest for drying shrinkage and moisture movement if a need arises.
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