Sandblast M300: consumption. Calculation of the consumption of peskobetona M300

Sand concrete is a dry, non-shrinking mixture intended for pouring screeds, foundations, elements of benches, flowerpots, wings, etc. At present this material is very popular with private as well as large developers. Especially often, when erecting and repairing buildings and structures, the M300 sand concrete is used. The consumption of this material, in comparison with cement, of course, will be great. However, with the use of sand concrete, there is no need to perform operations such as sifting sand to separate it into fractions and manually preparing a dry mix.

Stamps and composition of material

Use a mixture of sand concrete in the construction of buildings and structures can only if the pressure on the finished surface does not exceed 300 kg / cm ² . There are several brands of this material - from M200 to M500. Concrete is made of:

• Building sand. Its fractions can be different - from 0.5 to 7 mm.
• Portland cement grade M400 and M500.
• Various kinds of additives and plasticizers.

The grade of sand concrete depends on the brand used for the manufacture of cement, as well as on the size of the filler fractions. The smaller the sand, the denser and stronger are the constructed structures.

Sandstone M300

In private housing construction this brand of material, as already mentioned, is used most often. Use the M300 sandblaster for indoor and outdoor work. From it, paving slabs, foundations, partitions, walls, etc. are made. But especially this material is often used for pouring screeds in garages, basements and houses. These are the main areas where the M300 sand concrete is used. The consumption of this material is quite high, but the quality is excellent.

Advantages of the material

The main advantages of sand concrete of this brand, in addition to cheapness, include:

• High density and strength of finished structures;
• No shrinkage;
• Simplicity in application;
• Rapid solidification;
• Water resistance.

Disadvantages of sand concrete

Minuses for this material is almost not available. To the disadvantages, judging by the reviews, consumers attribute only not very convenient packaging (carrying bags of 40 and 50 kg is pretty hard) and the unreliability of the bags themselves. Also on sale falsifications for sand concrete are often found. Therefore, when buying should be more closely.

Features of use

As with any other material, certain rules must be followed when erecting M300 sand concrete. If using this material it is supposed to arrange a screed or repair any concrete structure, preliminary preparatory work should be done beforehand. The surface on which it will be applied must be cleaned of dirt and dust, paintwork, grease, etc. In addition, all loose areas are necessarily removed.

Consumption of peskobetona M300 on the screed

So, as already mentioned, this material is used mainly for pouring quality screeds. It can be applied for the device of a floor in premises both economic purpose, and in inhabited.

Of course, before you begin to pour the screed, you need to find out how much material you need to buy. This dry mix is sold in bags of 40 and 50 kg. The consumption of peskobetona m300 per 1 m2 of surface with a layer thickness of 1 cm is 20 kg. Thus, a screed of 2 cm will require 40 kg of the mixture or one bag. Knowing the area of the room, it's easy to calculate the required number. So, on a house in 100 m ² will take about 100 sacks.

Next, let's see how much such material can do. For this, of course, you need to know what the price is for it. Sand-concrete in bags of 40 kg costs about 150 rubles. Thus, a floor screed of 2 cm in a house with an area of 100 m ² will cost about 15,000 rubles. On four-centimeter will leave, accordingly, 30000 r.

A bag of ordinary cement M400 in 50 kg provided that the mixture is made in proportion to sand 1x3 is enough for 1 m ² ten centimeter screed. That is, approximately 5 m ² two-centimeter. It is worth a bag of cement about 200 rubles. On a house in 100 m ² will leave thus 20 bags. Consequently, it will cost to fill the screed in 2 cm in 4000 rubles without taking into account the cost of sand (the career - 130-170 rubles per tonne), 4 cm - in 8000 rubles. In the end, pouring the screed with a conventional cement-sand mixture is thus much cheaper.

However, the quality of the concrete prepared in concrete at home is much inferior to sandstone. It's all about the composition of the latter. In the preparation of sand concrete, sand of different fractions is used. The ratio of particles of different sizes is calculated in such a way that ultimately the maximum solid, non-shrinkage, non-cracking surface is obtained. At home, a mixture of this quality to cook, of course, will not succeed.

Sandblast M300: the expense at erection of the base

As for 1 m ^{2 of the} finished surface, at a thickness of about a centimeter, about 20 kg of sand concrete are used, therefore, 200 kg or 4 bags of 50 kg will have to be purchased per 1 m ³ . The volume of the basement for the house in 100 m ² (40 m - length) with its height of 110 m (70 under the ground and 40 - base) and thickness of 40 cm will be equal to 17.6 m ³ . Therefore, for its erection it will be necessary to buy 17.6 x 4 = 70.4 or 71 bags of 50 kg.

It is worth peskobeton in a container about 170 p. Means, it will be necessary to pay for it 71 х 170 = 12070 р. Sandstone M300 (50 kg), the consumption of which is not so great, as you can see, for the erection of the foundation - the material is very suitable. In the end, 12070 p. - the amount is not that big.

So, the consumption of peskobetona M300 per 1m2 (at a thickness of 1 cm) is 20 kg. Cement, as we found out, goes less. On the foundation (at a ratio of 1x3) of a house in 100 m ² it will need about 27 sacks, and consequently, the base of the building will not cost without taking into account the sand in 27 x 200 = 5400 r. With sand - roughly about 6000-7000 rubles. When using rubble or buta - about 5500-6500 rubles. However, the quality of such a foundation for sand concrete will be much inferior.

How to make a solution

So, we have found out how much you need to fill the foundation or screeds of such material as sandstone M300. Its consumption is quite large, but in general, the use of this material in private housing construction seems appropriate. Of course, when using this material, it is necessary to produce the batch correctly. It is best to perform this operation in the following sequence:

• Pour warm water into the container of the required volume (from +15 to +25 gr.). The consumption, depending on the purpose of the solution, should be 0.18-0.23 liters per kilogram of sand concrete.
• Then the dry mix itself is poured into the water.
• The resulting mass is thoroughly mixed until all, even the smallest, lumps disappear. The finished mixture should be absolutely homogeneous.

Use the solution for 2 hours. Work with peskobeton M300 is allowed at a temperature of +5 to +35 g. Water can not be added to the ready-made solution. In the process of pouring the mixture is recommended to puncture periodically with a stake, rod or shovel to remove air bubbles. The drying time of the finished mixture is 24 hours. You can walk on the screed in a week. Formwork from the foundation is removed on the second day. The final strength of sand concrete is collected after 28 days, that is, as ordinary concrete. Reinforcement at a thickness of screed more than 2 cm is required. Of course, the skeleton will need to be installed and when pouring the foundation. Crushed stone when used in the mixture is not added. Its role is played by large particles of sand (3-7 mm). Waterproofing is carried out in the usual manner.

From all of the above, you can draw a simple conclusion. Sand-concrete foundations and screeds are more expensive than cement-sand foundations. Therefore, it is expedient to use this material when it is necessary to be resistant to cracking of a finished structure or its final price is not too important. Sand-concrete, for example, is an excellent option for the construction of walls from not too strong aerated concrete and foam concrete blocks.