What is aggregation?

Question 1: What is aggregation? Aggregate is a kind of granular loose material, which plays the role of skeleton, support or filling in concrete. Aggregate is divided into coarse aggregate and fine aggregate. Coarse aggregate includes pebbles, gravels and waste residue, and fine aggregate is mainly medium and fine sand. When mixing concrete, the cement is stirred into a thin paste by water. If aggregate is not added, the aggregate will not be formed and can not be used. Therefore, aggregate is a very important raw material in construction.

Question 2: What is aggregation? Aggregate is an ore from a mine source, which is heated by a yurt and turned into clinker, and then crushed by a crusher to separate out granular substances with different polarities!

Question 3: What is the aggregate of building materials? Five points. Concrete, for example, is generally composed of sandstone cement (temporarily without additives), in which sandstone is aggregate.

Sand is fine aggregate and stone is coarse aggregate.

Question 4: What does aggregation mean? Aggregate is a kind of granular loose material, which plays the role of skeleton, support or filling in concrete. Aggregate is divided into coarse aggregate and fine aggregate. Coarse aggregate includes pebbles, gravels and waste residue, and fine aggregate is mainly medium and fine sand. When mixing concrete, the cement is stirred into a thin paste by water. If aggregate is not added, the aggregate will not be formed and can not be used. Therefore, aggregate is a very important raw material in construction.

Question 5: What do coarse aggregate and fine aggregate mean respectively? Do you want to ask how fine aggregate and coarse aggregate are distinguished?

According to particle size, the particle size is between 0. 15mm-4.75mm, such as sand; Coarse aggregate with particle size greater than 4.75 mm, such as gravel and pebbles.

I hope I can help you!

Question 6: What do coarse aggregate and fine aggregate mean respectively? Do you want to ask how fine aggregate and coarse aggregate are distinguished? According to particle size, the particle size is between 0. 15mm-4.75mm, such as sand; Coarse aggregate with particle size greater than 4.75 mm, such as gravel and pebbles. I hope I can help you!

Question 7: What is alkali aggregate 10? Simply put, the so-called alkali aggregate refers to the active components contained in the sand aggregate used for mixing concrete, which will react with the alkali in concrete (whether it is the alkali in cement or admixture) for a long time, making the concrete swell, loosen and even destroy.

The harm of alkali aggregate in concrete engineering must meet three conditions: first, a certain amount of alkali is brought into concrete by raw materials when preparing concrete; Second, there is a certain amount of active aggregate that can react with alkali; Third, it is a humid environment, which can supply the water needed for the reactant to absorb water and expand. Only when these three conditions are met, the damage of alkali-aggregate reaction to the project will occur.

Question 8: What is emery aggregate? Emery is metal oxide aggregate or metal aggregate hardener. The main components of aggregates are metal oxides or metal aggregates, such as Al2O3, Fe2O3 and TiO2.

Emery is a colorless crystal. High density and hardness, about 9.5 Mohs. Generally colorless powder particles. After grinding, it can be used as the friction surface of grinding powder, polishing paper, grinding wheel and grindstone. It is made by putting sand and a proper amount of carbon in an electric furnace to strengthen the heat.

Natural emery, also known as garnet, is a silicate mineral. Abrasive made by hydraulic separation, processing, screening and classification. Production and use have a long history. In ancient China, emery was used to polish crystal glass and all kinds of jade. In11940s, it was exported to the east.

Question 9: What is the aggregate in concrete? It is a granular loose material, which plays the role of skeleton or filling in concrete. Coarse aggregate and fine aggregate. Coarse aggregate includes pebbles, gravels, waste residue, etc. Fine aggregate includes medium-fine sand and fly ash.

Question 10: What stones are commonly used in concrete aggregates? Generally, it is granite gravel, and others are not used because of strength problems. It is estimated that there are too many impurities or pollution on the ground after washing, so it is best to send them for inspection and be sure to clean them before using them.