What is aggregate and types of aggregate?

Arid is a landscaping term used to describe coarse-grained to medium-grained material. Varying in stone material and size, each type can have its own purpose when it comes to landscaping projects. Many types of construction materials, including concrete, asphalt and mortar, use aggregates as key ingredients. The use of aggregate materials for concrete reduces production costs and increases the strength of concrete mixes.

Crushed aggregates represent between 60 and 75% of the concrete volume. These crushed aggregates significantly affect the properties of freshly mixed and hardened concrete, making it more compact, decreasing its permeability (making it more resistant to water) and modifying its heat retention values. In order to meet the variety of different uses of aggregate materials, CEMEX offers a wide range of aggregates to meet the needs of our customers. According to the source of the aggregate, it can be divided into natural aggregate, artificial aggregate and recycled concrete.

The larger particle size can have a diameter of about 150 mm, and the smaller aggregate has a diameter of up to 5 to 10 microns. These characteristics make aggregate materials an indispensable ingredient when it comes to building and maintaining roads, sidewalks, parking lots, airport runways, railroads, and a variety of buildings and highways. Currently, only recycled aggregates made from construction or demolition waste are recommended for use in new concrete construction. Aggregates such as sand can also be used to create or restore beaches, sports surfaces, racetracks, and other recreational facilities.

The aggregates in the concrete occupied about 70-80% of the total volume provided by the main body to the concrete. Aggregate categories include gravel, sand, recycled concrete, slag, topsoil, ballast, type 1 MOT, and geosynthetic aggregates (synthetic products commonly used in civil engineering projects used to stabilize terrain). Elongated aggregates are those whose length is greater compared to the width and the thickness or length of the aggregate is greater than 180% of its average dimension. It is generally referred to as recycled concrete aggregate when it is made primarily of crushed concrete and recycled aggregate when it contains substantial quantities of materials other than crushed concrete.

At CEMEX, we are continually looking for new ways to use aggregates to improve drainage, heat absorption and other forces that impact the environment. MOT type 1 is a stone that meets MOT standards in terms of strength, size and composition for use as a compact subbase. Before studying the properties of concrete, it is necessary to know the aggregates that constitute the largest volume of concrete. Precautions should be taken to restrict contamination of other materials with aggregates that may be problematic, such as asphalt, dirt and clay balls, chlorides, glass, plasterboard, sealants, paper, plaster, wood, and roofing materials.

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