Question

Suitable maximum particle size for use as
course aggregate for making concrete floors
is
A) 35 mm
B) 30 mm
C) 15 mm
D) 10 MM​

Answer 1

Suitable maximum particle size for use as course aggregate for making concrete floor is

D) 10mm

Concrete with a smaller maximum-size aggregate could have higher compressive strength.

Answer 2

Suitable maximum particle size for making concrete floor is A) 15mm

• The size of aggregate which more than 4.75 mm we can say that 5 mm, is referred to as the coarse aggregate.
• Around 12-15 mm is the maximum aggregate size for concrete slabs with reinforcement as in bridge decks, roof slabs and columns, and pre-stressed concrete joints.
• The coarse aggregate size is sometimes kept to a maximum size of 19 mm to produce high strength concrete, but additional cement is needed for the increased surface area.