PSI - Issue 52

Govardhan Polepally et al. / Procedia Structural Integrity 52 (2024) 487–505 Govardhan Polepally/ Structural Integrity Procedia 00 (2019) 000 – 000

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Table 8. Bridge-4 NDT test results. Location

Average Strength RH (MPa)

Average UPV (m/s)

Average Half Cell value (mV)

Profometer Results (Cover in mm)

41 42 40 40 39 40 43 42 43 42 44 42 44 40 43 43 44 41 45 42 40 40 43 40 44 40 46

4053 3862 3927 4052 3973 3885 3951 4110 4023 3962 4075 4075 3842 3944 3880 4052 3907 4049 4026 4104 4016 4086 3923 3989 4272 4136 4016

-193 -197 -152

40.1 to 52.9 42.6 to 55.5 41.8 to 56.5 35.5 to 49.5 40.2 to 51.2 32.6 to 48.6

Abutment wall (A1)

Pier wall (P1)

Pier wall (P2)

-174 -191 -188 -178 -205 -192 -166 -199 -184

Pier wall (P3)

Pier wall (P4)

Pier wall (P5)

Pier wall (P6)

Pier wall (P7)

-201 -189 -172 -199 -168 -198

Abutment wall (A2)

The results of the NDT test for Bridge 4 are detailed in Table 8. The quality of concrete is assessed as good to very good based on the RH test results as 41 MPa at the most tested sites of the RCC construction. The majority of the UPV results at the RCC structure's highest tested position show that the concrete quality is of good grade. According to the Half Cell Potential findings, the RCC structure's maximum tested site has a 90% likelihood of being corrosion free or having an unclear probability of corrosion. Additionally, the average compressive strength of the RCC Pier wall of Bridge constructions is proven to be 33.09 MPa based on the outcomes of the concrete core test.

Table 9. Bridge 2 NDT test results.

Average Strength RH (MPa)

Average UPV (m/s)

Average Half Cell value (mV)

Profometer Results (Cover in mm)

Location

39 42 38 40

3859 3849 4014 4082

-178 -203 -210

32.4 to 48.5 33.2 to 51.2

Pier wall (P4)

Pier wall (P5)

38.5 to 46.8