What is the introduction of ordinary concrete?

Ordinary concrete refers to cement as a gel material, sand and stones as aggregates, which are stirred, poured and solidified into "artificial stone" with a certain strength, that is, cement concrete, which is the largest variety of concrete used in the project at present. The word "concrete" can often be used as "concrete".

First, the main advantages of ordinary concrete.

1.Raw materials are abundant. More than 70% of the materials in concrete are sand and gravel, which are local materials, which can be used locally to avoid long-distance transportation, so they are cheap.

2.Convenient construction. The concrete mixture has good fluidity and plasticity, and can be poured into components and structures of various shapes and sizes according to the needs of the construction site. It can be poured on site or prefabricated.

3.Performance can be designed and adjusted as needed. By adjusting the variety and quantity of each component material, especially by incorporating different admixtures and admixtures, different construction workability, strength, durability or good matching can be obtained, and poured into reinforced concrete to meet the different requirements of the project.

4.High compressive strength. The compressive strength of concrete is generally between.

When mixed with high-efficiency superplasticizer and admixture, the strength can reach more than 100MPa. Moreover, concrete and steel have a good match, after pouring into reinforced concrete, it can effectively improve the defect of low tensile strength, so that concrete can be applied to various structural parts.

5.Good durability. Concrete with correct selection of raw materials, reasonable proportion, and good construction and maintenance has excellent impermeability, frost resistance and corrosion resistance, and has a protective effect on steel bars. It can keep the long-term performance of the concrete structure stable.

Second, the main disadvantages of ordinary concrete.

1.Self-weighted. The weight of 1m3 concrete is about 2400kg, so the weight of the structure is large, which leads to an increase in the cost of foundation treatment.

2.Low tensile strength and poor crack resistance. The tensile strength of concrete is generally only 110-120 of the compressive strength, and it is easy to crack.

3.The shrinkage deformation is large. The self-shrinkage and drying shrinkage caused by cement hydration and condensation hardening are more than 500 10-6 mm, and it is easy to produce concrete shrinkage cracks.

Ordinary concrete: artificial stone in appropriate proportions.

Commercial concrete is commercial concrete.

Commercial concrete refers to concrete used for commercial purposes, such as concrete. At present, most of the construction uses commercial concrete. A general term for engineering composite materials in which aggregates are cemented into a whole by cementitious materials.

The word concrete usually refers to the use of cement as cementitious material, sand and stone as aggregates; Cement concrete obtained by mixing, forming and curing with water in a certain proportion.

Commercial concrete can ensure the quality of concrete, because the concrete scattered in the construction site is limited by technical equipment, the quality of concrete is not uniform enough, and the concrete batching plant has strict control and management, accurate measurement and complete inspection means from raw materials to product production process, so that the quality of concrete is fully guaranteed.

Features of commercial concrete

Mainly environmental protection, because the commercial concrete batching plant is set up in the urban fringe area, compared with the traditional process of mixing at the construction site, it reduces dust, noise, sewage and other pollution, and improves the working and living environment of urban residents. With the development and growth of the commercial concrete industry, the process waste residue and municipal waste treatment and disposal will reduce environmental degradation.

Then the rapid improvement of work efficiency, compared with the traditional sense of concrete, large-scale commercial production and canning of commercial concrete, and the use of pumping process pouring, not only improve the production efficiency, the construction progress has also been greatly improved, significantly shorten the construction cycle.

Summary. Hello, the definition of concrete: refers to the general term of engineering composite materials that are cemented into aggregates by cementitious materials.

The word concrete usually refers to the use of cement as cementitious material, sand and stone as aggregates; Cement concrete, also known as ordinary concrete, is widely used in civil engineering engineering by mixing, forming and curing cement concrete obtained by mixing with water (with or without admixtures and admixtures) in a certain proportion.

Hello, the definition of concrete: refers to the general term of engineering composite materials that are cemented into aggregates by cementitious materials. The word concrete usually refers to the use of cement as cementitious material, sand and stone as aggregates; Cement concrete, also known as ordinary concrete, is widely used in civil engineering engineering by mixing, forming and curing cement concrete obtained by mixing with water (with or without admixtures and admixtures) in a certain proportion.

Dear, if my answer is helpful to you, please give a thumbs up, your support is also the driving force for my progress. If you feel that my answer is still satisfied, you can click on my avatar to follow me, and if you have similar questions in the future, you can consult me directly. Finally, I wish you good health and a good mood! <>

Concrete construction process.

Foamed concrete construction process: inspect the quality of cement, sand and foaming agent, compare the test, make technical disclosure, prepare machinery and equipment, clean the base, find the elevation, mix and pour concrete, leveling, calendering, curing, inspection and acceptance.

1. Substrate treatment: clean up the substrate garbage, and sprinkle water to moisten it before pouring concrete. 2. Find the elevation:

According to the horizontal standard line and design thickness, the upper flat elevation control line of the surface layer is popped up on the surrounding walls and columns. 3. Concrete mixing: The ratio of concrete should be determined by test according to the design requirements.

The feeding must be strictly weighed, the control ratio, and the feeding sequence of each plate is cement, sand, foaming agent and water.