BCM quiz (wood, LWC, bricks)

Below are properties of Light Weight Concrete (LWC) in comparison with dense concrete, ACCEPT?

• They have enhanced aesthetic value in compare to dense aggregate concretes

• The reduced self-weight of the structure offers economies of construction;

• They are easier to cut, chase, nail, plaster and render than dense concrete

• They have enhanced fire resistance over most dense aggregate concretes

• They have enhanced thermal insulation but reduced compressive strength

Lightweight aggregate concrete is particularly suitable for LWC because ....................... (choose 3 answers)

• low density

• heavy weight

• good thermal insulation

• good fire resistance

Three general categories of LWC are ................... (choose 3 answers)

• Lightweight concrete course aggregate

• aerated concrete

• no-fines concrete

• light-weight aggregate concrete

polystyrene bead aggregate cement can be describe as below, ACCEPT

• very light aggregate

• very cheap

• expensive

• high insulation properties

state SIX characteristics of LWC

what is the type of brick suitable for construction activities stated below;

GENERAL BUILDING WORKS

NO VISUAL FINISH REQUIRED

• common bricks

• facing bricks

• engineering bricks

what is the type of brick suitable for construction activities stated below;

AESTHETIC WALL

HAVE ATTRACTIVE COLOR

DURABLE FINISH

• common brick

• engineering brick

• facing brick

what is the type of brick suitable for construction activities stated below;

HEAVY-LOAD STRUCTURE

HAVE SPECIFIC LOAD-BEARING CHARACTERISTICS

LOW WATER ABSORBTION

• facing bricks

• engineering bricks

• common bricks

Below are ingredients of good brick earth, ACCEPT?

• iron oxide

• alumina

• lime stone

• magnesia

• tetra calcium

which ingredient that enable brick to retain in shape while prevent shrinkage during burning process?

• silica

• alumina

• lime stone

• magnesia

• iron oxide