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How to select and proportion raw materials in the process of making concrete bricks?

Time: March 27, 2023  |  Source: HF Machinery

The raw materials of concrete bricks mainly include cement, sand, aggregate and water. The process of selecting and matching these raw materials is as follows:

1. Select cement: Cement is the cementing material of concrete. Commonly used cements include ordinary Portland cement, slag cement, and cement for high-performance concrete. Different types and grades of cement are selected according to factors such as concrete strength grade, ambient temperature, and construction technology.




2. Select sand: sand is the fine aggregate of concrete, the key to selecting sand is to ensure that its particle size is appropriate. In general, the sand used for concrete should be fine sand with a particle size between 0.15-2.5mm, which has good filling and water permeability.




3. Select aggregate: Aggregate is the coarse aggregate of concrete. Commonly used aggregates include gravel and pebbles. The selection of aggregate needs to be considered comprehensively based on factors such as concrete strength grade, construction technology, and aggregate quality. Generally, the aggregate used in concrete should be coarse aggregate, with a particle size between 5-10mm, which has good mechanical properties. performance.

Concrete aggregate refers to the granular loose material that acts as a skeleton or filling in concrete. Coarse aggregate and fine aggregate. Coarse aggregate refers to pebbles, crushed stones, etc., and fine aggregate refers to natural sand, artificial sand, etc.



4. Ratio: The ratio of concrete refers to mixing cement, sand, aggregate and water in a certain proportion. The ratio needs to be comprehensively considered based on factors such as concrete strength grade, construction technology, and raw material quality. In general, the ratio of concrete is cement: sand: aggregate = 1:6:3, and the specific ratio should be adjusted according to actual needs.

The above is the basic process of selecting and proportioning raw materials for making concrete bricks. It should be noted that in actual production, quality inspection and control of raw materials are also required to ensure that the quality of concrete bricks meets the requirements.
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