NON-DESTRUCTIVE TESTING METHODS

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Q3. a) From an old building, 18 core specimens are taken and tested for compressive strength. Compressive strength test results are given in the table below. Diameters of the core specimens are 150 mm and the lengths are 300mm. According to the compressive strength test results given below and TS EN 13791, determine the grade of the concrete. (Show all your calculations clearly and in detail) Specimen No 1 fx (N/mm) (Compressive Strength of Core Specimens) 29 2 3 4 5 6 30 32 33 31 34 34 33 28 7 8 9 10 11 12 13 14 15 16 17 18 31 30 30 34 32 30 32 32 32 b) From an old building, 14 core specimens are taken and tested for compressive strength. Core dimensions are 100*100 mm. According to the compressive strength test results given below and TS EN 13791, determine the grade of the concrete. (Show all your calculations clearly and in detail.) fin (N/mm) (Compressive Strength of Core Specimens) Specimen No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 30 31 32 35 33 36 34 37 29 29 34 31 32 37 Q3. a) From an old building, 18 core specimens are taken and tested for compressive strength. Compressive strength test results are given in the table below. Diameters of the core specimens are 150 mm and the lengths are 300mm. According to the compressive strength test results given below and TS EN 13791, determine the grade of the concrete. (Show all your calculations clearly and in detail) Specimen No 1 fx (N/mm) (Compressive Strength of Core Specimens) 29 2 3 4 5 6 30 32 33 31 34 34 33 28 7 8 9 10 11 12 13 14 15 16 17 18 31 30 30 34 32 30 32 32 32 b) From an old building, 14 core specimens are taken and tested for compressive strength. Core dimensions are 100*100 mm. According to the compressive strength test results given below and TS EN 13791, determine the grade of the concrete. (Show all your calculations clearly and in detail.) fin (N/mm) (Compressive Strength of Core Specimens) Specimen No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 30 31 32 35 33 36 34 37 29 29 34 31 32 37