What does aggregation mean?

Aggregate refers to aggregate used in building materials such as concrete and asphalt, and its main function is to fill and enhance the mechanical properties of materials.

1, the definition of aggregation

Aggregate refers to granular materials used to make building materials such as concrete and asphalt, including sand, stone, gravel and aggregate. They usually have different particle sizes and shapes and play a role in filling and strengthening building materials.

2, the classification of aggregate

Coarse aggregate and fine aggregate are classified according to particle size. Coarse aggregate has a large particle size and is generally used for concrete, while fine aggregate has a small particle size and is generally used for asphalt. Source classification of natural aggregate and artificial aggregate. Natural aggregates are usually river sand, rocks, etc. , and artificial aggregates include slag, slag and sintered pellets.

3, the role of aggregate

Strengthening the strength and stability of materials Aggregate is one of the main components of building materials, and the filling between them can increase the density and strength of materials. Aggregates with different particle sizes can be locked with each other to improve the shear strength and durability of materials. Correct selection and utilization of suitable aggregate can reduce the cost of building materials and improve the use effect and economic benefits of materials.

An indispensable part of building materials

1, concrete

Concrete is the most common building material. Aggregates in concrete are mainly used to enhance the strength and stability of concrete, and can adjust the properties of concrete, such as fluidity and durability. Widely used in infrastructure construction such as houses, bridges and roads. Asphalt is a common material in road construction, in which aggregate plays the role of filling and strengthening, improving the stability and durability of pavement.

2. Selection and quality control of aggregate

Choosing suitable aggregate is an important link to ensure the quality of building materials. Common selection criteria include particle size distribution, angle coefficient and water absorption, which are directly related to the mechanical properties of materials. The quality control of aggregate includes the procurement of raw materials, the inspection and acceptance of the production process and the final product to ensure that the aggregate meets the requirements of relevant standards and specifications.