L06_Blockwork System

Which of the following is NOT one of the six IBS classifications identified by CIDB Malaysia?

• Blockwork system

• Formwork system

• Timber framing system

• Reinforced masonry system

Concrete masonry units are mainly produced from which four ingredients?

• Cement, aggregate, water, admixtures

• Cement, steel fibers, water, lime

• Sand, lime, gypsum, bitumen

• Clay, fly-ash, water, fibers

One standard concrete block has a face area roughly equal to how many conventional clay bricks?

• 2

• 4

• 6

• 8

Which option is NOT listed among the basic types of concrete blocks?

• Solid block

• Cellular block

• Hollow block

• Slotted block

“AAC” stands for ________.

• Autoclaved Aerated Concrete

• Advanced Aggregated Cement

• Aerated Aggregate

• Composite Adaptive Aluminum Concrete

The working density range for AAC blocks is approximately ____ kg/m³.

• 300–450

• 550–650

• 700–910

• 1000–1200

Using AAC instead of clay brick for internal walls reduces the dead load by roughly:

• 30%

• 45%

• 65%

• 80%

Typical wall-installation productivity is about ________ for AAC versus ________ for brickwork (m²/man-day).

• 10 ; 22

• 20–22 ; 10

• 30 ; 15

• 50–75 ; 40

Which drawback is specifically associated with AAC blocks?

• High water absorption

• Brittle nature requiring special fixings

• Excessive weight

• Low thermal insulation

Which step is NOT part of the standard block manufacturing process shown in the slides?

• Mixing

• Moulding

• Curing

• Welding