Quantity Surveying Af-Soomaali, Chapter #2 Foundation Work, Lesson#4 quantity of concrete in F1.

What is concrete?
Concrete is a widely used construction material that is a mixture of cement, aggregates, water, and admixture. Concrete is the very first choice for the civil engineering industry as it is a more conventional material readily available and cheap while it has some good properties like excellent durability, mouldability, can be produced with industrial byproducts, and having less energy input.
The quantity of concrete is cubic meter m3
Properties of the concrete
 Strength
 Workability
 Durability
Types of concrete
 Normal concrete
 High strength concrete
 High-performance concrete
 Self compacting concrete
 Light weight concrete

Grades of concrete

This mix proportions for each grade of normal concrete are as follows with the denotation of cement: fine aggregates: coarse aggregates,
Grade of Concrete Mix Proportion
10 1 : 3 : 6
15 1 : 2 : 4
20 1: 1.5 : 3
25 1 : 1 : 2

Tests of concrete
 Slump test
 Cube test

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