Maintenance of Civil Structures

What device is being used to identify the compressive strength of concrete that is already casted?

• Magnetic Rebar Locator

• Ultrasonic Testing Equipment

• Rebound Hammer Test

• Radiographic Testing Equipment

What device is being used to determine the location of concrete voids and cracks, and position of embedded utilities such as pipes, rebars, and others using radiographic technology?

• Magnetic Rebar Locator

• Ultrasonic Testing Equipment

• Rebound Hammer Test

• Radiographic Testing Equipment

What device is being used to evaluate the homogeneity and integrity of concrete using ultrasonic pulse velocity?

• Magnetic Rebar Locator

• Ultrasonic Testing Equipment

• Rebound Hammer Test

• Radiographic Testing Equipment

What device is being used to determine the depth of concrete cover, and the size and location of reinforcement bars embedded in concrete using alternating magnetic field?

• Magnetic Rebar Locator

• Ultrasonic Testing Equipment

• Rebound Hammer Test

• Radiographic Testing Equipment

Loosening of rivets and bolts on civil structures are sometimes due to the static loading produced by trains.

• True

• False

What defect in concrete bridge will happen if there will be loss of alkaline content in concrete due to the presence of carbon dioxide?

• Thermal Crack

• Neutralization

• Alkali Aggregate Reaction

• Bleeding