The service life of a house built of concrete is 100 years. What is concrete? Why can it be so strong?

Concrete is one of the most important materials for building houses. Most modern buildings are made of concrete. It can be said that we can't build high-rise buildings without concrete, and the house we live in will become very fragile. This shows the importance of concrete in building construction. Anyone who knows a little about architecture knows that concrete is made of different raw materials. It is easy to be destroyed before solidification, and it will become indestructible after solidification. Many friends are also curious about this. Many houses built of concrete have a long life. Why can it be so strong?

In fact, simply speaking, concrete is a kind of material that can only be used in building construction. It looks like a lump of mud and has no aesthetics at all, but we should not be deceived by its appearance. Concrete is a high-strength building material, which is mainly composed of cement, sand, stone and water in a certain proportion. If stones are not added in the process of mixing, they will be mixed into cement mortar, which is also very important in construction.

The first is concrete. Why is concrete so strong? The solidity of concrete mainly depends on cement, which is a cementing material. It can be hardened in air and water, and can firmly bond sand and gravel together. Once solidified, it can bear several tons or even hundreds of tons of weight. In addition, the strength of concrete is also different. There are fourteen grades from C 15 to C80. The higher the strength of concrete, the stronger its flexural strength, compressive strength and tensile strength, and the longer the service life of the built building. The strength grades of concrete for private houses are mainly C20 and C30, and the service life of houses built with this kind of concrete is 50 or 70 years. But if there are no serious natural disasters, the service life of the house will exceed.

So in which part of the house is concrete mainly used? Concrete is usually poured on the floors, load-bearing beams and columns of houses. Steel bars are usually rolled before pouring. Once concrete and steel bars are combined, they will become more durable and the resistance in all aspects will be enhanced. Modern buildings are basically built with steel bars and concrete, so concrete is also called reinforced concrete.

Followed by cement mortar, cement mortar is not used for structural load-bearing, so the strength is not so high. Mainly used for building walls and plastering. When the structure of the house is built, cement mortar can be used to build walls inside the house. After it is firm, it can be used to smooth the wall, which is also called "plastering" in professional terms, so cement mortar mainly plays the role of interior decoration of the house. Finally, the headmaster summed up that modern houses are basically built with concrete, which is widely used by people because of its low price, good durability and long life, and its robustness is also very strong, and the life of the built houses can reach 100 years or more.