Home > Encyclopedia

The Role of Aggregate in Concrete

Aggregates are one of the important constituents of concrete that comprises up to 75 percent of concrete. They are considered as inert fillers in concrete but play important roles in the behaviors both freshly mixed and hardened concrete. Changes in gradation, maximum aggregate size unit weight and moisture content affect the character and performance of concrete.

aggregate

Economy, workability, durability and strength are important factors in the selection of aggregates. Considering economy increasing the maximum aggregate size reduce cost by reducing cement requirement, which is the most costly ingredient of concrete. And it means lower water if water to cement ratio is kept constant; which in turn reduce the possible shrinkage and creep of concrete in the long term.

Workability is another factor for aggregate selection. Increasing the size of aggregates, elongated and angular shapes reduce workability while more rounded and smaller aggregates are easier to work with.

The strength of a concrete mix largely depends on the strength properties of aggregate and its chemical content.

The rapid development of high-rise buildings, housing complexes, malls, governmental and nongovernmental buildings and road construction has created high demand for aggregate. The demand for aggregate is directly related with the growth in the construction sector which in turn depends on  the overall economic development.

Gradation

Gradation is the particle size distribution of an aggregate as determined a sieve analysis using wire mesh of square openings. There are a number of sieve sizes used for fine aggregates and coarse aggregate. Both fine and coarse aggregates should satisfy certain gradation limits to attain economy, workability, shrinkage and strength requirements.

>>Previous: Pervious Concrete

>>Next: PugMill Mixing Plant, Pug Mill Plant

Get Support & Quotation

Please fill in the form below(* are required). We will get in touch with you ASAP!

Concrete Plant Concrete Mixer Crusher Other

Solution

  • The Aggregates Production Line for Highway Construction,Stone and Aggregate CrushingThe Aggregates Production Line for Highway Construction

    In the production line, Camelway technical staffs mainly configure the vibrating feeder, jaw crusher, hydraulic cone crusher, circular vibrating screen, vertical shaft impact crusher(sand making machine), belt conveyor, etc....

  • Roller Compacted Concrete Plant, RCC Mixing Plant, RCC Batching PlantRoller Compacted Concrete Plant

    Roller compacted concrete (RCC) is an extremely dry concrete which is very difficult to compact by the normal methods used for workable concrete. RCC is used for the construction of dams and pavements....

  • Nuclear Power Concrete Production LineNuclear Power Concrete Production Line

    Nuclear power project is less than hydropower project in concrete pouring volume, but compared with other projects, it still needs a large volume of concrete and its structure is more complex than hydropower project....

  • Diabase Crushing, Screening and Sand Making Production LineDiabase Crushing, Screening and Sand Making Production Line

    Diabase is a superior building material that can be used as asphalt concrete crushed stones for super highway pavement. The production mainly consists of jaw cr...

  • Mobile Crushing Plant for Construction Waste ProcessingMobile Crushing Plant for Building Waste Processing

    Due to the construction wastes usually were piled up concentratedly in relatively limited space with poor traffic condition, Camelway Machinery recommends wheel mobile crushing equipment to crush and screen the construction waste....

Contact Us

Tel: 008637165861518

Fax: 008637165861528

E-mail:info@camelway.com

Mobile: 008618838109566

WhatsApp: 008618838109566

Skype: Camelway1983