Fine-grained asphalt concrete: properties and scope

09-03-2018

Building

In modern construction there are such types of materials that have a strictly defined purpose and it is quite difficult to replace them. For example, the most popular type of such products is fine-grained asphalt concrete. And most often it is used to create coverage for pedestrian paths, playgrounds, or areas adjacent to a building.

Amateur photo of asphalt concrete and equipment, which is necessary for its installation

Basic concepts and characteristics

Для начала необходимо сказать о том, что данные составы изготавливаются на заводах, и все они требуют специальных способов укладки. При этом чаще всего подобные изделия поставляют специальных транспортных средствах, поскольку некоторые их виды требуют постоянного подогрева. Также стоит отметить, что создавать асфальтобетон своими руками не рекомендуется, так как он требует точных пропорций (см.также статью «Армированный бетон: особенности изготовления»).

The process of making sidewalks is practically no different from laying roads, although it does not need to exert such large impacts on the surface.

Manufacturing

First of all, it is necessary to determine the fraction of the filler, which is used as gravel.

To get the required proportion of fine-grained asphalt, you need to choose a material not larger than 20 mm in diameter.

For the manufacture of this type of material create special plants that work only in this direction.

Next, add to the mixture a certain amount of solids, among which may be sand or slag.. From this depends the density of the whole composition and its volatility.
Also, instructions for the manufacture of asphalt requires the addition of a substance called tar. It is the result of the distillation of petroleum and is used as a binder.

The finished mixture should look uniform and dry.

It should be noted that the volumetric weight of fine-grained asphalt directly depends on the proportions of these elements.. However, there are several options for the manufacture of this material, which involve different combinations of the mixture or the addition of additional components.

Tip! Typically, enterprises produce about two or three types of asphalt, which are most suitable for a particular climate. However, with a large order, they can make the necessary changes or additions to the composition.

Table of grain components of the mineral part of mixtures for the production of asphalt concrete of different grain sizes

Specifications

Прежде всего, необходимо сказать о том, что плотность асфальтобетона мелкозернистого очень сильно отличается от материала, который используют для изготовления автомобильных дорог (читайте также статью «Бутобетон – особенности и применение»).

It is much lower, which allows to slightly absorb when walking, which is very good for the legs and the spine.

The use of fine gravel or screenings to create mixtures that are used in the manufacture of roads leads to rapid wear.

It is worth noting that usually a fine-grained asphalt mix very poorly tolerates exposure to direct sunlight in the summer and a sharp change in humidity in the winter. Although recently with the use of special additives this problem was solved.
It is also important to mention that such a coating is laid without expensive processes, among which cutting of reinforced concrete with diamond circles, which is used to create a paving of slabs.

Tip! When ordering this material in production, it is necessary to require a certificate of quality, for a specific batch which would indicate all the necessary characteristics. This will avoid fraud on the part of the seller and will help to get a complete picture of the purchased product.

The use of such a coating in the courtyards of residential buildings or complexes for various purposes

Application area

Typically, such asphalt is used exclusively for the manufacture of pedestrian areas. The fact is that its price is much cheaper than slabs for the pavement and at the same time it springs, which is very convenient when walking. However, recently such materials have been supplanted by paving slabs on a sand cushion.

The use of such compositions for the production of minor repairs or repair gaps on the road

Considering the fact that during installation of such coatings it is not necessary to make diamond drilling of holes in concrete and at the same time it can be used on the surface from which pipes come out or they have hatches, they are used in the courtyards of multi-access houses. They also harbor pedestrian streets and some sidewalks.

In some educational institutions this type of asphalt is used to create special platforms or parade ground. However, such decisions are not welcome lately.

Tip! The lifetime of the finished tracks from this material can be called one of the longest, even with increasing permissible loads. At the same time, not one of the materials with a similar purpose can boast of such qualities.

Some types of such material are stacked at a high temperature, which means that all work should be carried out taking into account safety regulations

Conclusion

After reading the video in this article, you can get more detailed information about this type of material and its scope. Also, taking into account the article presented above, it should be concluded that this type of coverage has a strictly defined purpose, with which it copes perfectly. At the same time, there have recently been areas that consider asphalt as the basis for the manufacture of certain products (learn here how to lay laminate on a concrete floor).