Which of the following statements are TRUE?

• Chemical reaction between cement and water is called Hydration

• Hydration will cause concrete to harden

• Hydration releases heat

• Hydration is a secret organisation for world domination. Hail Hydra!

• Incomplete hydration process will result in poor concrete quality

Which of the following statements are TRUE for concrete?

• High compressive strength

• High tensile strength

• A type of composite material

• Combustible material

After concrete placing, the next step in concreting procedure is ...

• Concrete batching

• Concrete compacting

• Concrete curing

• Concrete delivery

Best description for the image shown is ...

• Reinforcement bar

• High tensile links or stirrups

• High tensile main bars

• Mild steel links or stirrups

• Metal scraps

Best description for the image shown is ...

• Reinforcement bar

• High tensile links or stirrups

• High tensile main bars

• Mild steel main bars

• Metal scraps

Referring to the column cross-section shown, which of the following statements are TRUE?

• Height of column is 400

• There are 7 numbers of this column

• The column has 8 numbers of 30mm diameter reinforcement bars

• Concrete cover is 25mm

• The column has 30 numbers of 8mm diameter reinforcement bars

The concrete component shown in the image is ...

• Concrete plinth

• Concrete slab

• Column kicker

• Column base

• Column shoe

R12 @250 in the image shown are ...

• 12mm high tensile reinforcement main bar

• 12mm mild steel reinforcement main bar

• 12mm high tensile stirrups

• 12mm mild steel stirrups

The procedure shown in the image is ...

• Pre-tensioning of concrete beam

• Post-tensioning of concrete beam

• Post-tendoning of concrete beam

• Pre-anchoring of concrete beam

Which of the followings are TRUE for curing process?

• Curing process is intended to control the temperature of the concrete during hardening stage.

• Curing is to avoid poured concrete from drying out too fast, which could lead to cracks and strength will drop (weaker)

• Curing can be done by covering the concrete surface with waterproof plastic membrane

• Curing can be done by keeping the concrete surface wet with sprayed water