MIX DESIGN OF CONCRETE

The _________ compressive strength required from structural consideration.

The adequate workability necessary for _________ compaction with the compacting equipment available.

What is the approx. mix proportion for M10

• 1:3:6

• 1:2:4

• 1:1.5:3

• 1:1:2

What is the approx. mix proportion for M25

• 1:3:6

• 1:2:4

• 1:1.5:3

• 1:1:2

A lower ratio leads to

• Higher strength but low durability

• Higher strength and durability

• Lower strength but high durability

• Lower strength and durability

Workability can be resolved

• With not using of plasticizers

• With use of plasticizers

• With the use of both plasticizers and super plasticizers

• With not using of both plasticizers and super plasticizers

This image has

• High w/c ratio

• Low w/c ratio

• High Strength

• Low porosity

What is the compaction factor for low degree of workability

• .78

• .85

• .92

• .95