Sand for construction - choose the right one

Sand for construction - choose the right one

Images on request Sand for construction - choose the right one

Practically in any construction sand is used as a filler in the process of producing concrete mixes and preparing the foundation. Such bulk material, used for construction purposes and not only, experts refer to sedimentary rocks, which can be mined even by artificial means, in the process of crushing rubble or gravel.

However, the majority of novice developers or people who have decided to build their own structures on their own experience some difficulties in choosing sand, which is primarily due to the variety of options that are offered by the manufacturers of this material. Some people prefer to buy a stagnant pile of sand from their neighbors - in order to clear this pile of grass, use it, and then it is better to sift it.

First, to buy sand, you should immediately refuse offers that provide for unrefined sand.If you add unrefined sand to the concrete mix, in which there will be a large number of different sprigs, dry grass and other debris, the quality of the concrete will be very low. However, if the grass and branches can be easily detected even by visual inspection, it will be much more difficult to find out some of the clay in the sand.

The fact is that the presence of clay is practically not displayed externally, but its excess can lead to the instability of concrete. It is noteworthy that the permissible content of clay in the sand is an indicator of 5%. A large amount of gravel in the sand can also significantly degrade its quality. However, the presence of this domain is still allowed, if its content by mass is more than 0.5, and the fractions are within 10 mm.

You can also buy sand, in which gravel is represented by fractions of about 5-10 mm, however, the content of such a domain in this case should not exceed 10%.

There is a proven and simple way to test the quality of the sand, which can be done almost anywhere. To do this, you need to have only a glass container (jar, bottle, and so on), a little water and sand, which will be checked.You need to put some sand into the container so that it takes up about a third of the container, and fill the rest of the space with water and shake well so that the sand turns into a mush.

Next, you need to put the container on a flat surface and take readings after 5 minutes. If the sand lay on the bottom, and the water on top acquired a dirty color, the sand is of rather poor quality. The same can be said about the sand, on the surface of the water in the tank, where it is checked, an incomprehensible foreign plaque appeared.

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