Rehabilitation -Section 3 and 4 Rapid Test

Chain dragging accomplishes same sounding of ---------------------

• Pings

• Hammer sounding

• Punks

• Pings to Punks

Which method is used to detect delamination in bridge decks

• Infrared thermography

• Microwave imaging

• Visible light Imaging

• Terahertz imaging

Infrared Thermography used for testing--------------

• Concrete components exposed to water

• Concrete components exposed to heat

• Concrete components exposed to direct sun light

• Concrete components exposed to direct sun light and rain

Heat transfer through concrete is interrupted by ............

• Delamination

• Other discontinuities

• Both A and B

• None of the above

In acoustical emission and thermography method , what characteristics can be recorded?

• Area of delamination

• depth of delamination

• Both A and B

• Strength of Materials

The corrosion of reinforcement is the ----------degradation of steel in concrete.

• physical

• physiochemical

• chemical

• Electrochemical

Which parameter is measured in the corrosion activity measurement using copper sulphate half cell

• Potential difference

• Thermal Conductivity

• Electrical Conductivity

• All the above

When will the 90% of probability for the corrosion is expected.

• if volt is in b/n -0.2 and -0.35

• if volt is less -ve than -0.2

• If volt is more -ve than -0.35

• if volt is equal to -o.35

When the reading of corrosion activity measurement is invalid

• No result obtained

• _ve reading are abtained

• +ve readings are obtained

• None of the above

In corrosion activity measurement, the pores sponge is placed at which position?

• On Reinforcing steel

• At the side of concrete piece

• On the surface of concrete

• below the concrete