The types of aggregate

April 09, 2020

Aggregate is a granular loose material that acts as a skeleton or filling in concrete. The application of aggregate in civil engineering: cement concrete, asphalt concrete, road foundation, railway track slag, mortar and so on.

Henan Sinco Machinery Co., Ltd.

Aggregate is divided into several types:

1.According to the source of aggregates:

   Natural rock aggregate: aggregate composed of natural rock, such as sand, pebbles, gravel, etc.

   Artificial aggregate: hot-processed aggregates include expanded shale, expanded vermiculite, etc.; industrial by-products include slag, iron slag, powder slag, etc.

   Recycled aggregate: broken concrete, broken clay bricks, etc.

2. According to the aggregate particle size:

   Coarse aggregate: rock particles with a particle size greater than 4.75 mm, such as pebbles, gravel, etc.

   Fine aggregate: rock particles with a particle size of less than 4.75 mm, such as river sand, mountain sand, sea sand, etc.

3.According to the density of aggregates:

   Ordinary aggregate: density is 2500-2700kg/m3.

   Lightweight aggregate: density of 0~1000kg/m3, such as ceramsite, calcined shale, expanded vermiculite, expanded perlite, foamed plastic particles, etc.

   Heavy aggregate: density is 3500-4000kg/m3, such as iron ore and barite.

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