How to introduce the use of cement in detail?

Cement is to play the role of cementing, basically used in construction and national defense and other projects, we see the building is basically the existence of cement, can achieve a fixed role for the building, so as to play the role of earthquake resistance; In addition, cement can also be paved on the road, used for traffic and walking on the road surface made of cement, providing us with a corresponding stable effect on traffic.

Cement is a powdered hydraulic inorganic cementitious material. When mixed with water, it becomes a slurry that can be hardened in water or air, and can firmly cement various materials such as stone and sand.

According to the use and performance of cement, it can be divided into general cement and special cement, like general cement is a kind of cement that we often use when building buildings, and is generally used in civil engineering and construction projects.

Cement is made from limestone, sandstone, silicate minerals, iron powder, and some slag.

These ingredients are proportioned and then ground into a fine powder, and the mixture at this time is called raw meal. Then calcination is carried out, the general temperature is about 1450 degrees, and the product after calcination is called clinker. The clinker and gypsum were then ground together and mixed in proportion to become the cement we see today.

The raw materials for firing cement clinker are: calcareous raw materials (such as limestone), siliceous raw materials (such as sandstone, silica), aluminum raw materials (such as fly ash, bauxite) and iron raw materials (such as iron ore, sulfuric acid slag, copper slag). The raw materials for making cement are:

clinker, gypsum, mixed lumber.

Cement can harden in air or water, and firmly cement sand, stone and other materials together to achieve the purpose of stabilizing the building. As an important cementitious material, cement is widely used in civil construction, water conservancy, national defense and other fields. The naming of cement is carried out according to different categories based on the main hydraulic minerals, mixed materials, uses and main characteristics of cement, and strives to be concise and accurate.

Cement can harden in air or water, and firmly cement sand, stone and other materials together to achieve the purpose of stabilizing the building. As an important cementitious material, cement is widely used in civil construction, water conservancy, national defense and other fields. The naming of cement is carried out according to different categories based on the main hydraulic minerals, mixed materials, uses and main characteristics of cement, and strives to be concise and accurate.

1. Cement plays a role in cementing concrete, and cement is basically used in other projects such as construction and national defense, that is to say, the buildings we see basically have the existence of cement materials, so it has the effect of making the building achieve a fixed effect, so that it can have the effect of earthquake resistance.

2. In addition, cement can also be laid on the road for our traffic, we walk on the road surface made of cement, to provide our traffic with the corresponding stability.

Cement is a powdered hydraulic inorganic cementitious material. After adding water and stirring into a slurry, it can be hardened in air or better hardened in water, and can firmly cement sand, stone and other materials together. There are many classification methods for cement, which can be divided into two categories: general cement and special cement according to its use and performance.

Next, I will introduce you to a series of knowledge of cement.

There are many types of cement, and there are currently more than 100 cement varieties in the world. Cement is one of the main building materials and plays an important role in social development and economic construction.

First, the introduction and role of cement:

The mixture of early lime and pozzolana was similar to that of modern lime pozzolana cement, and the concrete made from cemented crushed stone was not only strong when hardened, but also resistant to the erosion of fresh or salt water. For a long time, as an important cementitious material, it has been widely used in civil construction, water conservancy, national defense and other projects.

Cement is especially suitable for the manufacture of concrete, precast concrete, fair-faced concrete, GRC products, adhesives and other special occasions, widely used in colored pavement bricks, permeable bricks, cultural stones, sculpture crafts, terrazzo, wear-resistant floors, putty, etc., with high light reflection performance, so that the manufacture of curb stones, road signs, road dividers have higher traffic safety performance. 2. Cement is divided into three categories according to its use and performance:

1. General cement, the cement usually used in general civil engineering and construction projects. General cement mainly refers to: GB175-1999, GB1344-1999 and GB12958-1999 specified in the six categories of cement, namely Portland cement, ordinary Portland cement, slag Portland cement, pozzolana Portland cement, fly ash Portland cement and composite Portland cement.

2. Special cement, cement for special purposes. Such as: G-grade oil well cement, road Portland cement.

3. Characteristic cement, a certain cement with outstanding performance. Such as: fast-hardening Portland cement, low-heat slag Portland cement, expanded sulfur-aluminate cement.

(1) According to the main hydraulic substance of cement: Portland cement (the main hydraulic substance is calcium silicate), aluminate cement (the main hydraulic substance is calcium aluminate), sulfoaluminate cement (the main hydraulic substance is calcium sulfoaluminate), etc. Because their hydraulics are different, their properties are also different, such as aluminate cement sets quickly.

Early high strength, good heat resistance and sulfate corrosion resistance; After hardening, sulfoaluminate cement will expand in volume, etc.

2) according to the use of cement is divided into: general cement (used in general construction projects, mainly five kinds of cement of Portland), special cement (refers to the mud suitable for special purposes, there are dam cement, oil well cement, masonry cement, etc.) special cement (cement with a more prominent certain properties, such as expansion cement, low-heat cement, colored cement, white cement, etc.).

Widely used in civil and industrial construction projects, such as oil and gas field cementing, large-volume dams in water conservancy projects, military emergency repair projects, can also be used for acid resistance, C2AS in the crystalline state is not hydraulid.

Why do you use cement to make a house?

You don't need cement to make a house, children play house.