Concrete w12: waterproof, characteristics of brands, the
Concrete, like any other building material, is subdivided into categories. The main indicators on which builders are oriented are the brand and class of concrete. No less important indicators are frost resistance and water resistance.
Waterproof concrete
Such a parameter as watertightness should be given special attention because of its importance. Waterproofing concrete structures can greatly extend their service life, make it stronger, so much so that even diamond drilling holes in concrete.
Otherwise, water will make concrete brittle, and this can directly affect the stability of the structure.
That is why in modern construction prefer to use waterproof concretes.
According to their ability to resist the destructive action of water, all concretes are divided into the following brands:
- W2.
- W4.
- W6.
- W8.
- W12.
Note! Brand in this case indicates the pressure of water (kgf / cmg). That is, reinforced concrete 12 is the most watertight of all presented.
Brand Specifications
Application areas
Characteristics of concrete W12 are such that it can withstand water pressure up to 12 atmospheres, which is especially important when building objects, where continuous contact with water is provided.
And we are talking not only about the cores of river bridges, dams and other industrial facilities, but also for everyday use. This may concern the manufacture of a bowl for a pool or the use of concrete of this brand on certain types of soil, marsh or with a high content of groundwater.
Even if we are talking about building an object that will not constantly be in contact with water, it makes sense to opt for concrete that does not allow water to pass through. This will create an additional reserve for the strength of the whole structure, and only cutting the reinforced concrete with diamond circles can then be suitable for its separation.
Note! Do not forget that waterproof concretes, in addition to not allowing water, increase the overall strength of the structure. This function is successfully performed by reinforced concrete12.
The most common brands of concrete
One of the most popular classes of concrete is concrete B12,5. Its popularity is due to the fact that it finds application in completely different areas. Most often it is used in preparatory work.
An example would be the laying of the underlying layer, which is necessary to reduce the precipitation of a building.
The cost of this class is low, so you can use large volumes without spending a large amount of money.
- Concrete B 12 5 is widely used in road construction. Here he serves as the basis. For road construction, it is indispensable.
In its composition Concrete 12 5 provides for the use of components in the following proportions:
- Cement - 1 part.
- Sand - 3.5 parts.
- The filler is 5.7 parts. In most cases, filler is crushed stone. But this is not a prerequisite. Granite, lime, or even gravel can play the role of a filler with the same success. Concrete B12 5 does not lose its strength from this.
- Another material worth mentioning is concrete grade C1215. Immediately it should be said that according to the older classification, this mark corresponds to concrete b15. This is one of the most common and popular concretes. And such popularity is quite reasonable.
Reasonable price and high performance allow you to use this brand in almost all types of construction work. The most common areas are the following:
| Production of screeds and floors | Since all work is not done outdoors, the material does not require high resistance to atmospheric factors. The safety margin of this brand of concrete is quite enough to ensure the proper quality of performance. |
| Production of retaining walls. | Retaining walls are needed in order to take over the load from the upper levels of the building object. |
| Creating concrete pads and other structures of this type. | This type of work is distinguished by the fact that it requires high costs of concrete. Given the low price of this brand, even the use of large volumes will not lead to significant expenditure of funds. |
| Production of road plates. | When performing such works, metal structures are used. A concrete brand with 12 15 very well with the metal frame. |
| Creating a foundation for low-rise buildings | Basically we are talking about country cottages and cottages. |
Almost all the work on pouring concrete of the above brands can be done by hand. No special training whatsoever is required. The instruction, which describes all the stages of the preparation of the mixture, is always attached to the product.
Conclusion
The presence of a large number of grades of concrete allows you to rationally select the required brand, based on the requirements of construction, waterproofing, strength and other technological aspects.
The video in this article will provide additional information on the use of concrete.