Sand inwash: characteristics, application

Such material as sand plays a big role inconstruction. It is added to various mixtures that are used to make blocks, concrete and plaster solutions. They are also fortified by embankments and roads. The product is used not only natural, but also artificial.

Depending on the type of extraction, there is sandalluvial, quarry, river or marine. Washing (washed) sand is an environmentally friendly material that passes water. It practically does not contain clay and stones.

Method of extraction

The product is "knocked out" by a large head of waterhydromechanically, removing all solid particles. It becomes finer and more uniform, its quality improves. To date, sand pomnivnoy very much in demand in construction.

Characteristics:

foreign particles in the mixture not more than 0.3%;
the class of radioactivity is the first;
the coefficient of compaction is 1.05-1.52;
high coefficient of filtration.

The sand may be fine-grained,medium-grained and coarse-grained. Its average value is 0.6 mm. The color depends on what impurities are present in the material. White or grayish color has pure quartz sand. If the shade is brown or yellow, the material contains iron oxides.

Application

Injection sand is used:

for the manufacture of curbs, columns, reinforced concrete rings, tile paving;
as filler solutions;
for finishing works.

Sand quarry washed (washed) has a number of advantages compared to conventional quarry material (unwashed).

Advantages

It does not contain clay particles (unlike unwashed career sand, which has to be sieved).
The content of large stones and land is excluded.
There are no organic inclusions.
There is no need for additional cleaning.

Great importance in the construction has the applicationpure breed. There are ways to clean the material. If it is necessary to wash a small amount of the product, then it is sieved and water is supplied. In advance, you need to worry about the capacity, where the mixture will be poured. Water is changed several times until the material is clean.

You can also buy sand pomnuvnoy, the pricewhich is higher than seeded. Its advantage is that it is already clean. There is a traditional method of cleaning the mixture. Take a metal mesh stretched over the frame. First, the mixture is sieved through a mesh, and then washed in a container.

In the construction there are jobs that requireuse of large crystals. To do this, take a frame with a grid of 5-10 mm. It is installed strictly horizontally on bricks (4-5 pieces in each corner). The net is lined with sacking. The mixture is topped up on the top, leveling it, and the water is fed from the hose under pressure.

Sometimes in the construction of sand mixture withimpurities of earth and other suspensions. It is permissible to use it when it is not required that the work be performed only using high-quality materials. For example, it is required to fall asleep a site above the ground or a trench.

Its use finds both natural and artificial sand. The strength of the products depends on the quality of the building mix.

</ p>