AGGREGATE:

Strength, durability, workability and finish

Aggregate is a term for any particulate material. It includes gravel, crushed stone, sand, slag, recycled concrete, and geosynthetic aggregates. Aggregate may be natural, manufactured or recycled. Aggregates make up some 60 -80% of the concrete mix. They provide compressive strength and bulk to concrete.

Aggregates are selected for their durability, strength, workability and ability to receive finishes. For a good concrete mix, aggregates need to be clean, hard, strong particles, free of absorbed chemicals or coatings of clay, and other fine materials that could cause the deterioration of concrete.

Aggregates are divided into either coarse or fine categories. 

  • Coarse aggregates are particulates that are greater than 4.75m. The usual range is between 9.5mm and 37.5mm in diameter.
  • Fine aggregates are usually sand or crushed stone that are less than 9.55mm in diameter.

Typically the most common size of aggregate used in construction is 20mm. A larger size, 40mm, is more common in mass concrete. Larger aggregate diameters reduce the quantity of cement and water needed.

types of aggregate

Estimate your needs.

Aggregate calculator

Our Aggregate Calculator is helpful in estimating the volume and weight of aggregate necessary to cover a given area.

Keep in mind, this calculator should be used as an estimating tool ONLY. Surface texture, porosity, thickness of the applied material and other factors will influence actual material requirements. Estimates that result in too much or too little product being calculated are not the responsibility of Bama Concrete.

Note: The Aggregate Calculator does not provide an allowance for spillage or waste.

SIZES & TYPES:

Aggregate Products

Aggregates provide strength, durability and, when exposed, beauty to concrete. We custom create specialized mixes with variances in sand and rock. So if you have a unique need, pick up the phone and give us a call. With our team of experts, chances are we have the right solution for you.

Our construction aggregates are used in a number of ways:

  • As a base material underneath highways, walkways, airport runways, parking lots and railroads.
  • To aid in water filtration, purification and erosion control.
  • As a raw material used in combination with other resources.
Concrete loader with large boom

This primarily 1″ crushed, washed gravel with a top size of 1-1/2″ is often used for drainage around perforated pipe, under concrete slabs, and as a coarse driveway topping for soft, very muddy driveways. Suitable as a coarse driveway topping.

(1″ minus) is a washed rock with a maximum aggregate size of 1″ and can be either crushed or natural.

(Pea rock) is a washed rock with a maximum aggregate size of 3/8″ and can be either crushed or natural.

(Birds eye) can be either crushed or natural and is used under tilt up panels.

Choice of crushed rock depends on how the concrete is being used. In most cases, Fibermesh, rebar or wire are excellent solutions to providing additional strength.

3/4″ Is unwashed and artificially fractured on at least one side. It is mainly used for back fill or in asphalt, with a maximum aggregate size of 3/4″.

1/2″ Is unwashed and artificially fractured on at least one side. It is mainly used for back fill or in asphalt, with a maximum aggregate size of 1 1/2″.

Is unwashed and artificially fractured on at least one side. It is mainly used for back fill or in asphalt, with a maximum aggregate size of 3/8″.

Is a mixture of rock and sand used to make concrete.

Can be made of broken concrete asphalt and concrete or natural aggregate and is usually crushed to a 3/4″ minus.

Is a mixture of aggregates and measured amounts of Portland cement and water.

Crushed Aggregate Base consists entirely of crushed rock and rock dust.

Is dry screened products that is used for trench fill, back fill, slab underlayment and has many other uses.

Is made of broken concrete and asphalt and is usually crushed to a 3/4″ minus. It is excellent for driveways and parking lots and has many other uses.

Is used for drainage and can be used under artificial turf.

Are the 100s and 200s remaining after the washed concrete sand is produced and is used for pipe bedding and other specific applications.

Is a screened product, excellent for trench back-fill and slab underlayment and has many other uses.

Is a washed properly graded product used for concrete and has many other uses.

Is a washed properly graded product used for plaster, mortar, playgrounds, bedding and has many other uses.

Is used for “scratch coat and brown coat”.

Is dry screened products used for trench fill, back-fill, slab underlayment and has many other uses.

Is fill sand that requires a sand equivalent of 30 or better.