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.
Conducting Ultra-Sonic Pulse velocity (UPV) test at selected location on the 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 per the IS 13311 (Part-1) / ASTM C 597.
Extracting the concrete core samples of minimum 65 mm diameter and 100-150 mm length (approx.) from a selected location forms RCC members of the structures covered under the study and evaluation of the properties in the laboratory from the core sample selected. IS 456:2000; IS 516:1959; IS 1199:2002; ASTM C-42.
As per ASTM C-900
Measuring the half-cell /surface potential at the selected location on RCC members of the structures covered under the study will help in understanding the extent of reinforcement corrosion as per ASTM C 876.
At selected location on the RCC members of the structures covered under the study see the adequacy of concrete cover to rebars and effect of carbonation.
Measurement of carbonation depth by phenolphthalein spray test at selected location on RCC members of the structures covered under the study is used to see the depth of carbonation.
Moisture profile of concrete with respect to depth.
Chemical analysis of chlorides, Sulfates, 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.