NDT Testing

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Measuring the half-cell /surface potential at select location on RCC members of the structures covered under the study to understand the extent of reinforcement corrosion as per ASTM C 876

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Chemical analysis of chlorides, Sulphates, pH, alkali silica, etc on concrete powder collected from the structures, covered under the study, by drilling to understand the chemical deterioration / degradation of concrete and its effect on reinforcement corrosion.

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Sigma is NABL and ISO / IEC 17025:2005 accredited laboratory providing extensive test facilities for construction and building material testing by measuring the compressive strength, quality and uniformity of concrete by Rebound hammer test-IS:13311

Conducting rebound hammer test as per IS 13311(Part-2), ASTM C 805. The rebound hammer test shall be conducted at all those points were UPV test has been performed. One point consisting of six readings spread over an area of 1 sq. Shall be considered as 1 test.

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Conducting Ultra-Sonic Pulse velocity (UPV) test at selected location on RCC members of the Structures covered under the study by making 300 mm x300mm c/c grids to know about the homogeneity and quality of concrete. The test shall be performed as p0er IS 13311 (Part-1) / ASTM C 597

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We are offering Non Destructive Testing Of Concrete to our clients.

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Ndt Services

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The moisture test is done with respect to depth to determine the moisture profiling of concrete.

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Extracting the concrete core samples of minimum 65 mm diameter and 100-150 mm length (approx.) at select location form RCC members of the structures covered under the study and evaluation the properties in the laboratory from the core samples selected.
IS 456:2000;IS 516:1959;IS 1199:2002; ASTM C-42.
Cut AND Pull Out (CAPO) Test
As per ASTM C-900

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Measurement of carbonation depth by phenolphthalein spray test at select location on RCC members of the structures covered under the study to see the depth of carbonation.