Page 24 - PH_Masonry_Final_Ver 1_July 2020

Aggregates

Construction aggregate:

A building material which is mixed with an adhesive such as cement to make concrete and mor-

tar. Fine aggregate, usually sand or crushed stone, is used for smaller structural members where
a smooth surface is required; coarse aggregate, such as pebbles or small angular stones, for

larger members.

Fine Aggregates

Course Aggregates
Construction
Aggregates

Aggregates are produced for a number of reasons:

 Concrete aggregates,
 Road base and coverings

 Construction fill,
 Concrete products, such as blocks, bricks, pipes, etc.,

 Plaster and gunite (a mixture of cement, sand or crushed slag, and water, sprayed over rein-
forcement as a lightweight concrete construction) sands,
 Railroad ballast,

 Roofing granules,

 Filtration,
 Other miscellaneous uses.

Fine Aggregates consist of particles smaller than 4.75mm usually sand or crushed
stone.

Coarse Aggregates are those with particle sizes larger than 4.75mm

Aggregates make up 60% to 80% of the concrete volume

Participant Handbook : Masonry 24