Sand concrete m300 consumption per 1 m3 of concrete. Cement-sand mixture brand M300

Of particular interest is M300 sand concrete, which is actively used for low-rise housing construction. He attracts environmental safety and its improved characteristics compared to other compounds.

If you take 25% of the total weight of Portland cement grade M500, plus 75% of fractionated sand or granite screenings, or crushed stone chips, add a plasticizer, anti-corrosion, anti-freeze, hydrophobic components, you will get a universal mixture, which in structure is not much different from fine-grained dense concrete. And in terms of range of application, this composition has no analogues. One of the main features of this material is its ability not to shrink and at the same time to quickly dry and harden. It is also different:

• high plasticity;
• resistance to mechanical, harmful and other influences;
• ability to tolerate moisture and precipitation;
• successful resistance to corrosion;
• attractive price.

Sand concrete grade M300 is actively used not only in low-rise housing construction. The scope of its application is not limited. It is used in any interior spaces, and for works of various nature:

• in creating a wear-resistant floor in areas with characteristically high surface loads, for example, in garages;
• for fixing blocks and slabs;
• when performing installation and foundation work;
• for concreting staircases;
• for brickwork;
• during production paving slabs and curb stones;
• For .

The main technical characteristics of the M300 include the following indicators:

• Extreme strength ensures resistance to loads of up to 300 kg/cm2.
• In accordance with GOST, frost resistance is guaranteed by 50 cycles without changing the parameter.
• The recommended temperature tolerance for using the solution starts from +5°C and ends at +25°C. But frost-resistant ingredients ensure the performance of M300 sand concrete even at –15°C.
• This material is characterized by fairly reliable adhesion to the base, as indicated by the adhesion value of 4 kg/cm2.

According to experts, this sand concrete is easy to work with. after about 2 hours, and evenly covers the work surface. And this guarantees the absence of tears and peeling. In this case, the consumption required is small: per 1 cm of corporalization there is an average of 22 kg/m2.

For quality production results when working with this brand, you must follow professional recommendations:

• When preparing the solution, use only cold water.
• For 40 kg of mixture, 7.5 liters of liquid are required.
• The best air temperature for pouring is 5-50°C. If it is below -10, then it will take more time than 3 hours to gain strength.
• Guaranteed reliability is achieved when the surface to be treated with this material is pre-cleaned and slightly moistened.
• The finished solution must be compacted, and the joints adjacent to the structures must be reinforced.
• This brand is suitable for 1-1.5 cm bundles.

M300 sand concrete is characterized by a uniform distribution of small filler particles between large ones, hence the increased density, and therefore consumption, compared to conventional CFRP. The approximate amount of concrete depends on the type of work performed and the attached instructions for use. On average, 1 m3 will require 1.5–1.7 tons of mixture, or 30 bags of 50 kg packaging, or 40 of 40 kg each.

The consumption of sand concrete per 1 m2 is 18-20 kg of powder, but you also need to take into account the height of the screed. As a rule, the surface has unevenness. Therefore, for the average thickness, it is necessary to measure the most protruding part and determine how much it exceeds the height of other selected points. The largest deviation must be multiplied by 2 and thus will be known average consumption. When calculating the consumption of M300 on walls, you need to remember about filling the joints.

Areas of use

Depending on the fractions of bulk materials in M300 sand concrete, the properties change. If the powder has small fractions, up to 2 mm, then it has increased strength and stability of characteristics, performs the tasks of cement-sand plaster. It is used to close seams and is used for external finishing works.

Compositions with medium fractions, from 2 to 2.2 mm, are selected for the manufacture of curbs, walkways, and self-leveling floors. It is the graininess that causes good thermal insulation properties, therefore sand concrete is very popular as the basis for a variety of floor coverings. It is used as a self-leveling mixture, the cost of which is much lower than that of special solutions. And the ability not to shrink allows the M300 to be used in difficult soil conditions, when the soil is unstable and prone to instability.

Instant sand concrete hardens with high adhesion, which is why it is considered better than others for reconstruction and repair, since it is M300 that instantly bonds to a foreign surface. And after hardening General characteristics the structures are not inferior to the base material.

High strength and its specifications allow use in foundation works, especially when filling strip base, and where long-term functionality is required. Due to its excellent wear resistance, M300 sand concrete is used to concrete production sites of heavily loaded industrial enterprises. It is used when creating reinforced concrete structures and as a basis in construction concrete stairs, and also as a reliable and durable putty for joints.

After hardening, it is perfectly processed and suitable for various finishing works for almost any material. With M300 there is no need for additional waterproofing. Its light weight allowed it to take a leading position in the construction of low-rise buildings and structures, especially in private housing construction when creating utility rooms. All work using this composition is significantly cheaper, and both foam concrete and brick are inferior in price.

Some nuances of the cost of sand concrete M300

This material can be bought almost anywhere. The manufacturer's brand and weight dictate the price. The average cost of a 40 kg bag of M-300 is within plus or minus 100 rubles. If you make the traditional composition yourself with ordinary sand, cement and granite screenings, then it will cost 1500–1800 rubles per 1 ton of the mixture.

Sand concrete Stone Flower M300 and Rusean are considered one of the most popular and budget-friendly ones. The latter is valued for its guaranteed high quality. Rusean is selected in such a way that its strength exceeds the standard M300: 30.4 MPa versus 30.0. The products of the Stone Flower plant suit the more economical buyer, which is clearly presented in the cost overview table by manufacturer.

The prices given are relevant for the central regions of the country and do not include the cost of delivery, which in an unfavorable situation can increase costs by 25 - 50%.

The development of the production of dry mixtures quite naturally led to the appearance on sale of the most common mortar for masonry and ready-to-mixing. cement plaster. On the market, this product is known as sand concrete. The consumer is ready to buy this product (the usual dry mixture of sand and cement, which cost almost the same to purchase separately), since sand concrete is initially ready for use, saving a lot of time for preparing the solution.

And the slight difference in price (mainly for mixtures with additives) is more than compensated for by the wages of workers, who previously had to mix this solution for 30-40 minutes, but today they simply fill it with water and it is ready for use.

a brief description of

Dry masonry mixture sand concrete M300 is a common durable material for repair and construction work. The composition includes sand (fine fraction up to 3 mm) and Portland cement (depending on the manufacturer there may be different grades: M400, M500). Various additives and plasticizers are also introduced into the composition (depending on the manufacturer and purpose: anti-frost, strengthening fibers and others). It is used for concrete, stone and brick foundations at above-zero temperatures.

Technical characteristics of the sand concrete mixture M300

There are also other brands of sand concrete: M200, M150. All dry mixtures must be certified in accordance with the legislation of the Russian Federation. Many types of these products are sold in the country under different trademarks: Sand concrete, Stone flower, Roussean and others. With sellers, for significant purchases, you can always negotiate an impressive discount. Delivery by machine (3-5 tons and above) will cost 5,000 - 9,000 rubles depending on the tonnage over a distance of up to 50 km. The cost of delivery over 100 km is usually calculated separately. Loading is usually free, and unloading is an individual item.

Advantages over conventional concrete mortar - speed of hardening, mobility (delivered to any areas where a mixer cannot reach), speed of preparation, due to additives it can be used in conditions with low temperatures and in active environments that cause corrosion. High density and plasticity allows it to be used for finishing work.

The composition of sand concrete grade M300 is regulated by GOST 28013-98. To produce the mixture, prepared sand (washed river sand up to 2 mm in diameter, construction sand 1-3 mm, but sometimes fractions up to 6 mm can be found), plasticizers and additives are mixed with Portland cement M400 or M500. After which everything is packed into bags made of multi-layer paper. In some cases, bags with an inner polyethylene layer are used to prevent exposure to moisture.

For different sand concretes, separate design is carried out according to the composition of the mixture, depending on the required final characteristics.

How to work with it?

The properties of sand concrete make it possible to use it for constructing wear-resistant surfaces, leveling and when laying tiles or stone. Also used as concrete mixture with fine grain for casting. The main conditions for use are careful preparation of the surface: it must be leveled to the maximum, cleaned, primed and treated with antifungal agents.

To prepare a solution for 1 bag (up to 40 kg) you need 6.5-7 liters of water, the preparation technology is the simplest: pour the dry mixture into a clean container with water, mix, let stand for 5-10 minutes and mix again. Operating time from ready-made solution– up to 2 hours. Before diluting the M300 mixture, you must read the instructions for preparing the solution: different manufacturers may have their own wishes regarding the amount of water used and mixing time. For simple mixtures, the conditions do not vary very much, but when using sand concrete with additives this can be important. You should also take into account the wishes of manufacturers regarding surface preparation: the use of recommended primer materials can improve the final quality of the surface (if it is a screed, for example) or various indicators (adhesive strength, setting time, etc.). Also, various manufacturers can offer concentrated additives for various purposes: from antibacterial to strengthening.

Consumption per m2 is different quantities depending on the layer: for example, for a 3-5 cm screed, 2.5 kg/m2 of sand concrete is sufficient. The consumption per m3 for filling is 25-30 bags without filler (crushed stone, gravel). When using various fillers(you can add sand, fine crushed stone, gravel) technical characteristics of the final concrete mortar change towards a decrease - this fact must be taken into account when using sand concrete as a base for casting.

Ready-made building mixtures and semi-finished products are increasingly replacing traditional sand and cement on the market. A high-quality mixture for a relatively small overpayment allows you to save effort and time on preparing the binder, and thereby simplify the work. One of the most popular semi-finished products is sand concrete M300, a universal dry mixture for a wide range of works based on cement and sand.

Composition and main characteristics of sand concrete

In fact, this is an ordinary dry batch of three main components, well dried and free of foreign matter:

• A quarter of the mixture is binder material- Portland cement grade 500;
• Plasticizing additives and fiber fiber;
• Three quarters - sand of fractions 0.5-0.8 mm, for screeds, gravel screenings of 2-4 mm, clay can be additionally added;

Sand concrete M300, intended for making concrete screeds and pouring floors, is characterized by the presence of large fractions of gravel, sand and grains, so the manufacturer usually labels the mixture or indicates its purpose on the packaging.

For example, the Leroy Merlin company simply writes the name on the packaging - floor screed; accordingly, the buyer himself must guess that the composition of such sand concrete contains small fractions of gravel, and it is not suitable for plaster. More serious manufacturers assign special indices to the M300 brand. For example, sand concrete M300 mku. The standard for structure and composition is initially aimed at repairing and pouring concrete floors.

Sand concrete M300 after a set of calculations strength characteristics capable of withstanding compressive contact pressure up to 300 kg/cm 2 . The density of sand concrete m300 ranges from 1800 to 2200 kg/m3. In fact, this is enough to use dry sand concrete mixture to prepare a batch for pouring the foundation and most structural elements low-rise construction.

For your information! For 1 m 3 of a foundation made of lightweight M300 sand concrete, at least 1500-1700 kg of dry mixture will be required. For concrete screed for 1 m 2 screeds, 1 cm thick, the consumption of M300 sand concrete will be 17 kg per square.

Today there are quite a lot of various brands sand concrete, given the universal nature of the mixture, sand concrete M300 is most widely used for finishing work - plastering walls or making screeds, for laying bricks and casting blocks. The technical characteristics of the hardened material M300 are given in the table.

Practical use of sand concrete

Of course, sand concrete M300 different manufacturers has very different mixture quality and, accordingly, different prices goods. Concrete of well-known brands, such as Stone Flower, Brozex, Etalon M300, uses untarred cement that has undergone additional separation and activation in the mill.

This material absorbs water very well and does not crack after setting, provided that the amount of water used to prepare the solution is in accordance with the instructions for use. In addition, Stone Flower mixtures use components and cements with a low content of aluminum compounds and have increased frost resistance, so they are excellent for use for outdoor work.

Errors when making screeds made of sand concrete M300

According to experts, the majority of defects that occur when performing concrete screeds are associated with improper organization of work:

1. For sand concrete M300 from different manufacturers during preparation ready mixture different amounts of water are required. For example, for mixing a package of Stone Flower M300 40 kg, 10 liters of water are required, for the same packaging of the Standard, 6 liters of water are required, and for the Luix brand, the instructions specify 8 liters of water;
2. Often, one screed is filled using mixtures from several manufacturers. As M300 sand concrete from one manufacturer, for example, Stone Flower, is used, after the reserves are exhausted, a new batch is prepared from sand concrete from another company with different characteristics.

In this case, after the concrete hardens, cracks and chips form on the dividing line, as in the video:

For your information! If it becomes necessary to pour a screed from several different dry mixtures of sand concrete, they should be mixed in one batch until diluted with water.

A screed made from several grades of sand concrete is one of the most effective ways production of poured floors. The screed is prepared from at least two layers. For the first layer, sand concrete M300 MKU or its equivalent is used. The thickness of the screed layer is at least 15-20 mm; with thinner screeds, pebbles and gravel remain visible on the surface, and often even the second layer is not able to hide them. After the concrete has set, the surface remains rough and uneven, this will only improve adhesion to top layer screeds.

The second layer is laid with sand concrete with a high water content. For example, Brozex or Etalon M300. The mixtures are very plastic and are easily leveled using the rule at the stage finishing. After hardening, the shrinkage may be slightly greater, but the surface quality is the best.

The most popular brands of sand concrete M300

Among the manufacturers of sand concrete M300, there are leaders and outsiders. The first ones include De Luxe, Stone Flower, Roussean and Standard. Best quality As a rule, sand concrete from companies that specialize in the production of sand concrete differs building mixtures, semi-finished products and materials.

The situation is worse for universal companies that are just entering the ready-mix market. Usually these are unknown or little-known companies that use names for their products that are very similar famous brands and necessarily associated with construction and concrete works. The quality of such M300 sand concrete granulate can be zero, as in the video:

The classic packaging of M300 sand concrete mixture is a 40 kg paper bag. This is the accepted standard for most manufacturers, but this does not mean that all other options will be obviously counterfeit. Some companies, for example, De Luxe, Master Harz and Rusean, produce sand concrete in packages of 50 kg.

Conclusion

Today, the production of M300 mixture can be established in any basement using homemade concrete mixer and scales. However, the chances of buying a fake in standard 50 kg cement bags are much greater than in a forty kg container. In addition, confusion with different packaging weights is often used various kinds coven workers and piece workers when purchasing materials to order.

Sand concrete is a frost-resistant and durable material that is often used in construction for arranging subfloors. In terms of its physical and mechanical properties, the material is similar to conventional cement screed. However, it contains various plasticizers and modifying substances that significantly improve the technical characteristics of the screed: mechanical and chemical stability, frost resistance, density, etc.

What is sand concrete?

If you need to arrange a rough foundation with your own hands, the question often arises: what material should I use to fill the screed? Traditional cement-sand mortars They are inexpensive, but if a decent mechanical load is created on the coating, they begin to crack. Similar disadvantages liquid mixture of sand concrete is deprived. What is she?

Sand concrete is a special composition that includes the following components:

• Portland cement;
• synthetic substances (plasticizers, pigments);
• sand.

The above substances affect not only the consistency of the solution, but also the wear resistance of the screed itself. Depending on the fraction of sand that is included in the mixture, sand cement can be classified as fine- and coarse-grained concrete.

Analysis of sand concrete composition

When finishing a subfloor with your own hands, you need to take into account many characteristics of the coating:

• presence of temperature changes in the room;
• intensity of floor use;
• indoor humidity level;
• type of foundation or floor (presence of a basement).

When arranging foundations in rooms with a specific microclimate, you should not use a regular cement screed. Why? The resulting coating has high hygroscopicity and capillarity, so moisture easily penetrates deep into the base and destroys the reinforcing mesh. Over time, this affects the integrity of the subfloor and finishing floor.

What material is best to choose in this case? As practice shows, sand concrete has good moisture resistance and frost resistance. One cannot discount the insignificant consumption of the material itself, which is due to the high plasticity and fluidity of the solution. However, the technical characteristics of the sand-cement composition are influenced by the concentration and presence of individual components.

But no matter what mixture you choose for the subfloor, it will definitely include the following substances:

• granite screening;
• fine or coarse sand;
• Portland cement.

However, the technical characteristics of the screed are influenced by the additives included in the mixture, which include:

• plasticizers;
• antibacterial substances;
• retarders and accelerators of the screed curing process.

What sand concrete is best to choose in this case? The type of composition chosen directly depends on the conditions of use. When pouring a solution onto a small base area, it is more advisable to give preference to solutions with a quick hardening period. If you need to equip a subfloor of a larger area, it is better to opt for compositions with for a long time curing.

Advantages and disadvantages of sand concrete materials

When repairing a floor with your own hands, not everyone understands what criteria should be used to choose mixtures for applying screed. But experienced craftsmen sand concrete is chosen due to the following advantages:

1. Easy to prepare solution;
2. Long service life of the screed;
3. Resistance to corrosion processes;
4. Resistance to temperature changes;
5. Good sound and heat insulating qualities;
6. High frost resistance.

Important! The quality of sand concrete compositions is affected not only by the amount of additional ingredients, but also by the brand of cement used. When choosing a material with your own hands, it is worth knowing that there are several disadvantages of special screeds, namely:

• The price of sand concrete mixtures is higher than conventional cement ones;
• If the sequence of mixing the components of the mixture is not followed, the technical characteristics of the subfloor may significantly deteriorate;
• When diluting a solution with your own hands, without special equipment, it is difficult to track the degree of its homogeneity.

Types of sand concrete

As already noted, sand concrete can be of several types and its technical specifications It is the brand of cement that influences to a greater extent. The following grades of cement can be used to produce the material:

• M150 - used for masonry work: eliminating defects on the base, leveling the floor or laying facing materials;
• M200 – suitable for arranging screeds indoors;
• M300 – used for workpieces concrete castings, arrangement of a rough screed or foundation;
• M500 is the best of all the above types of sand cement, which is suitable for most masonry work.

It should be noted that the price of M500 cement is quite high and therefore it is used extremely rarely in the process of laying screeds. But M300, in its physical and mechanical characteristics, is not much inferior to high-quality material, but it costs much less.

Features of sand concrete M300

A sand-cement screed made from a mixture that includes M300 cement is most often used by builders when arranging a rough foundation. Increased interest in mortar due to good technical parameters:

• High density of the prepared solution;
• The ability to use the mixture for internal and external work;
• Resistant to precipitation and low temperatures;
• The ability of the composition to self-level;
• Rapid hardening of the screed at positive temperatures.

It should also be noted that the price of M300 sand-cement mortars is low, so even significant consumption of material does not contribute to large financial expenses.

Calculation of the amount of mixture

Calculation required quantity sand concrete is produced according to the following scheme:

1. First, the base area is calculated;
2. Then the degree of height difference per m 2 of the base is calculated;
3. After this, the consumption of the sand-cement composition is calculated using a certain formula.

• Let's say that we need to fill 30 m2 of base with sand cement with our own hands;
• The material consumption is mainly affected by the thickness of the screed, let’s say it is 4 cm;
• When calculating the required number of bags of sand concrete, look at the packaging specific consumption prepared solution per m 2 of coating with a layer thickness of 1 cm. Let us assume that it is approximately 20 kg;
• To calculate the amount of composition, we make the following calculation: multiply the layer thickness by the specific consumption: 4 * 20 = 80 kg;
• Now, to find out the amount of material to fill the entire floor (30 m2), you need to multiply the resulting value by total area base: 80*30 = 2400 kg.

So, the consumption of sand-cement mortar for arranging a floor with an area of ​​30 m2 will be 2400 kg. Now you need to determine the number of required bags of mixture:

• Usually, construction composition Packaged in bags of 20, 30 or 50 kg. Let's say we need to buy the mixture in 30-kilogram bags;
• How many bags will you need? The calculation is made in accordance with the formula: divide the total weight of the required amount of composition by the weight of one bag;
• Using a calculator, we make a simple calculation: 2400/30 = 80 bags.

Online calculator for calculations

Since the sand concrete mixture may contain various plasticizers and additives, they can significantly affect the consumption of the prepared composition. In order not to engage in time-consuming calculations, you can use online calculator. Thanks to a clever program, not only the consumption, but also the price of the required amount of sand cement can be determined without any problems.

Sand concrete grade M - 300 “Stone Flower” is suitable for both external (foundation construction, production of concrete tiles) and interior work(restoration of concrete walls, floor screeds). This material has increased resistance to moisture, frost and atmospheric influences, thanks to which building structures last longer in any climate. In the manufacture of this material, bulk compounds and plastic additives are used only High Quality, they give sand concrete excellent performance characteristics– resistance to moisture and negative temperatures, high strength.

This material does not emit harmful components, does not corrode and can withstand heavy loads. Unlike similar compositions, sand concrete m 300 does not wear out over time and does not delaminate.

It is used for the following work:

• Construction of foundations increased strength;
• Manufacturing of self-leveling floors High Quality;
• Pouring screeds, perfectly smooth and resistant to loads due to the use of a fine-grained composition;
• Track devices for various purposes, and similar elements of private estates.

The ability to adjust the strength of concrete by adding plasticizers or different amounts of sand, making it suitable for strengthening reinforced concrete structures and staircases.

Characteristics of sand concrete M300

Application of sand concrete M-300

Nowadays, it is difficult to imagine the construction of houses that do not require dry mixes. This includes putty, the use of adhesive solutions, plastering and other similar works. Sand concrete is also a dry mixture; it contains sand of different fractions and cement.

According to the ratio of components, sand concrete is divided into several types:

• M - 150,
• M - 200,
• M - 300
• M – 400

As the grade increases, the strength of the solution increases.

Sand concrete grade m 300, used to create wear-resistant and durable building structures. It is used in the production of expanded clay concrete blocks, foundations and blind areas. This material is supplied in packages weighing 40 kg.

When using this material, you must adhere to the accepted proportions. If the composition is mixed incorrectly, it will not work positive traits– strength and wear resistance.

Preparing the base

Anhydrite and cement screeds, concrete floors, and other bases made of stone, brick and concrete are best suited as a base for pouring sand concrete M300. Before pouring sand concrete, the surface must be cleaned of mold and oil stains, dust and other contaminants that can reduce the adhesion strength of the composition to the base.

If there are joints or seams on the surface of the base, it is better to cover them with repair mortar. It is advisable to treat highly absorbent substrates twice with a primer.

Mixing the solution

To prepare the solution, take 1 kg of dry sand concrete mixture and add 0.20-0.22 liters of water, water must be taken room temperature stirring the solution until smooth. The result will be a plastic mass that does not contain lumps. After which it is allowed to stand for 5-10 minutes to mature, and the mass is mixed well again.

Operating procedure

The prepared sand concrete solution must be poured onto the base, then evenly distributed with a trowel over the entire area. It is convenient to level the poured composition to the required thickness using a rule and a grater. After this, compaction is performed, which makes it possible to compact the layer of poured mortar.

Its setting time is 8 hours, and it will take 27-30 days to dry.

Composition of sand concrete

The universal composition of sand concrete M300 gives the material strength and optimal performance properties. Quantity different components may differ slightly from one manufacturer to another, but its basic components are:

In addition to the main components, the composition may contain granite screenings or crumbs, necessary additives or plasticizers.

Thus, additives that resist low temperatures, strengthening fibers and other components are used in the dry mixture, depending on the scope of use of the material and its manufacturer.

They add all sorts of chemical substances, making it possible to increase functional and technological properties sand concrete.

A ton of dry sand concrete M300 contains 200-230 kg of Portland cement and about 800 kg of other components. Each mixture manufacturer creates its own recipe for the material according to general parameters, and, as a result, the composition may have significant differences in the number of components and the presence of special additives. Sand concrete of guaranteed high quality can only be purchased from trusted and reliable suppliers.

Use of material

The first thing to do is to properly prepare the floor surface. First of all, you need to check that the base is free of dirt and debris, dense and dry; if stains from varnish or oil are found, they must be removed.

If cracks and cracks are found in the base, they will need to be covered. After completing the preparation, you can mix the sand concrete solution and pour it onto the floor surface, but it is advisable to first moisten the surface with plain water.

Sand concrete has many advantages:

• wear resistance,
• high strength,
• low temperature resistance and waterproof.

These characteristics are a result of the use of Portland cement in the mixture. With an increase in its volume in the mixture, the performance properties of the material increase.

Sand concrete can be used at temperatures above 5 degrees. For work, prepare the composition by mixing the dry mixture with water. Resistance to mechanical stress changes when adding different volumes of water and dry mixture. For this reason, compliance with the recommended proportions has great value. The mass sets quickly; work with the material must be completed no more than 2 hours after adding water.

Subsequent work with the mixture is not difficult; the solution poured onto the floor is independently distributed evenly over the surface. While the composition is curing, it must not be allowed to dry out quickly. After 2 days, the surface strength is checked, and after a week has passed, the rest of the work can be continued. Final strength will occur after 4 weeks.

When pouring sand concrete solution, it is necessary to divide the base with slats, maximum area The surface to be poured at the same time should not be more than 25 m2.

Calculation of sand concrete costs

The characteristics of this material allow it to be used in creating wear-resistant surfaces, leveling them and when laying stone, brick and tiles. In addition, it is used as a composition with fine grains for concreting.

The main conditions for this are quality training surface: it is necessary to clean it well, level it and then prime it, and treat it with agents that resist the development of fungus.

When mixing the working solution, add 6.5-7 liters of water to 40 kg of dry mixture, then add clean dishes pour in water and add the dry mixture, mix the composition, allow to stand for 5-10 minutes, then mix again. Working time with mixed composition is no more than 2 hours.

But when mixing, it is necessary to take into account the manufacturer’s requirements; for compositions without additives, the preparation conditions are almost the same, but for sand concrete with all kinds of additives this can play a decisive role. In addition, it is necessary to take into account the requirements for preparing the base: use recommended priming materials, which improves the characteristics of the surface or final indicators (setting time, improving adhesion).

The cost of the finished mixture per 1 m2 of surface varies depending on the thickness of the layer: for example, for a 3-5 cm screed, 2.5 kg/m2 of solution is enough.

For 1 m3 of concreting, 25-30 bags of dry mixture without adding filler will be required.

When using fillers (it is permissible to add fine gravel, fine crushed stone, sand to the solution), the properties of the finished concrete change and the consumption of the dry mixture becomes less.

In order to more accurately calculate the consumption of sand concrete for the entire area of ​​the room, it is necessary to establish the average thickness of the screed layer over the entire floor; this can be done using “base survey”. For this purpose, it is best to use a laser plotter; in the drawn plan of the room, height levels with a density of 1 mark per 1 m 2 room are placed, the data obtained from the measured points are summed up, after which the result is divided by the number of measurements.

From the height of the “finished floor” it is necessary to minus the thickness of the final coating, taking into account the base material, for example, porcelain stoneware will be laid on the floor as a base, the thickness of this material in most cases is 8 mm, the total thickness with glue solution it will be approximately 12-13mm.

For example: in a room of 60 m2, it is necessary to pour a screed 6 cm thick. To level the floor you will need about 19-20 kg of sand concrete per 1 m2.

Dry mixture x 6cm = 120kg, material costs for the entire area of ​​the room will be 7200 kg, 150 bags of sand concrete m 300.

Material cost

Sand concrete m 300 is not too expensive and is affordable for the average buyer. You can purchase it at any store specializing in the sale of building materials, but it is important to choose a quality product from a trusted supplier.

To do this, you need to know some criteria that affect the quality and price of sand concrete:

1. The cost of the material primarily depends on its type and quality;
2. Depending on the grade of material, as the grade increases, the cost also increases;
3. The brand of the sand concrete manufacturer also plays a role.

The average price for sand concrete m 300 is 100-120 rub.. per bag of 40 kg.

Sand concrete M 300 “Stone Flower” is one of the most common and inexpensive mixtures. This is a high-quality composition, its characteristics are not inferior to expensive analogues, with a good ratio of cost and quality.

Great features of this building material give the opportunity to get required result with little investment of money and time.