Masonry mixture / Masonry mortar M300

SOLUTION M300

Mortar M300 is a heavy type of concrete mixture. It is characterized by high strength, resistance to low temperatures, and is waterproof concrete. Due to the fact that the thermal conductivity is 0.7 watts / (meter* degrees Celsius), the solution can retard the spread of fire in the room. The solution contains no toxic components.

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The solution itself is quite simple to produce; you can additionally add all kinds of modifiers to it.

Buy M300 concrete in Moscow with delivery from

Experts value M300 concrete for the reliability and versatility of the final product. It is suitable for the manufacture of products such as a washing machine and others, as well as for the construction of various objects. Today it is one of the most popular types of building material.

Composition of concrete M300

Concrete M300 B25 is made from 5 components in the following proportion:

• Cement M400 - 428 kg.
• Crushed stone - 1080 kg.
• Water - 220 liters.
• Quartz sand - 660 kg.
• Additives (or plasticizers) - about 4.8 kg.

Our mixture is of high quality due to the strict selection of components, but at the same time the price per cube is one of the most affordable among competitors. In production we use:

• dry, sifted cement M500 or M400;
• expanded clay, quarry or river sand, fraction up to 2 mm, cleared of clay and other contaminants;
• tap water has been prepared;
• only durable granite crushed stone of the 1st class of various fractions, depending on the scope of application of the material. Sometimes, in order to improve density indicators, it is allowed to use crushed stone of the same type, but of different fractions, in the solution.

Concrete M300 belongs to the group of heavy concretes. The main difference between M350 concrete and other brands is its different proportions.

Concrete: characteristics, application

The main characteristics of concrete are its frost resistance and water resistance

M300, having these qualities, is also highly resistant to abrasion, and, unlike higher grades, does not set so quickly, which allows it to be transported over long distances (an important quality). All these properties of M300, together with the ideal price-quality ratio, have made this brand the most consumed concrete product on the market.

Scheme of processes during concrete hardening.

In individual construction, to prepare several cubes of M300 concrete, you can independently calculate its components.

Let's start by choosing a brand of cement. To do this, we use the Bolomey-Skramtaev formula: Rb = A x Rt x (C/V – 0.5), where Rb is the strength of concrete; A – coefficient taking into account the quality of aggregates (0.4 – 0.6); Rts – cement grade; C/W – cement-water ratio.

We take the recommended C/V ratio from the table (for example, for concrete M300 and cement M400 we get: C/V = 1/0.5 = 2):

Table 1

For cement M400 we get: 0.5 x 400 x (2 – 0.5) = 200 x 1.5 = 300 (close to the table value 294).

For M500 we get: 0.5 x 500 x (1.67 – 0.5) = 250 x 1.17 = 292.5

When choosing other brands, the C/V ratio changes significantly, which negatively affects the optimal density of concrete, so let’s consider the proportions of sand and crushed stone for the M400 and M500 cement grades.

There are standard proportions of M300 concrete specified in the collection of documents “SNiP 82-02095”. In particular, the following cement consumption rates are indicated:

table 2

In the same document we find the ratio of sand and crushed stone:

Table 3 (for M300 concrete)

Now it’s easy to calculate the number of components for the required volume of concrete solution.

Let’s assume that for the foundation for a garage in a country house, it is necessary to prepare 6.4 cubic meters of M300 concrete from M400 cement.

For one cube of solution you need to take:

• cement (Table 2) – 600 kg;
• sand (Table 3) – 1.9 x 600 = 1140 kg;
• crushed stone (Table 3) – 3.7 x 600 = 2220 kg;
• water (Table 1) – 300 (15 buckets of 20 l each).

To obtain the total amount of material, we multiply each result obtained by 6.4. The calculation is completed. Standards from the Internet and a calculator are all the tools for calculating the mixture.

Characteristics of M300

The cost of M300 concrete per 1 m3 may vary depending on the brand of cement and the addition of additional components (additives or plasticizers) to the mixture. The versatility of use of this building material is ensured by the following set of characteristics:

• mobility - with standard composition from P1 to P5, depends on the amount of water. If plasticizers are added to the mixture, then the plasticity of the concrete also increases;
• strength - this brand has strength B25;
• specific gravity - with granite filler 2000-2500, with limestone filler 1800-1900 kg per m3;
• density - depending on the fraction and type of crushed stone, the indicator varies between 1.85-2.5 tons per m3. This factor allows you to buy M300 concrete for forming structures that experience heavy loads;
• moisture resistance - the material demonstrates a fairly high W6 index;
• frost resistance - with standard preparation F150, after adding a plasticizer and adjusting the composition it can reach F200.

Let's consider the technical characteristics of concrete M300 class B25:

• Average density - 2300 kg/m3.
• The maximum compressive load is 35.32 MPa.
• Frost resistance - up to 200 freezing and thawing cycles.
• Water absorption coefficient - 2-8% (depending on the type of crushed stone).
• Mobility classes are possible - from P2 to P4.

Technical characteristics of dry construction mixture M300 coarse-grained

Mixture composition:

• Portland cement PC 400 D0, PC 500 D20 (GOST 10178-85, GOST 30515-97)
• Dry sand, fractionated TU 5711-002-05071329-2003 combined composition of fractions: 0.1 mm - 3 mm
• Dry gravel fraction 3-10 mm

Specifications:

Preparation of the mortar mixture:

To prepare masonry mortar for 1 kg. dry mixture sand concrete M-300 must be added 0.12-0.13 l. water, mix the resulting mixture until a homogeneous dough-like mass is formed. Next, you need to soak the prepared solution for 10 minutes, then mix again.

Preparing the base:

• The base to be treated must be strong, cleared of weak, loose and crumbling areas and slightly moistened.
• It is necessary to remove paint, oil and grease stains, dust, flaking elements and non-waterproof coatings from the surface.
• It is not recommended to apply the solution to a gypsum base

Execution of work:

• The base is divided by beacons and limiting slats, the correct installation is checked with a level. The maximum area of ​​one pour is 20-25 m2, the layer thickness is 10-100 mm (when using conventional M300 mortar, the maximum thickness is up to 50 mm).
• Immediately after mixing with water, the resulting mixture is poured onto the floor in strips 30-100 cm wide, along the previously placed beacons; for better distribution of the leveling mixture over the surface, use a wide spatula or a steel ruler (rule).
• Note! During the work and for the next 3 days, there should be no drafts in the room, direct sunlight should be avoided, it is recommended to moisten the coating with water. Readiness for subsequent leveling and walking is 18 (36 hours - regular M300 mixture) hours.
• For laying ceramic tiles, the base is ready after 36 hours, operation under load after 7 days.

Carefully! The cement contained in the M-300 mixture can form an alkaline reaction when interacting with water. It is necessary to protect eyes and skin from contact with the solution. If the mixture gets into your eyes, rinse them with water and, if necessary, consult a doctor.

Mixture consumption:

The consumption of dry mixture M-300 with an application layer of 10 mm is 17-19 kg per 1 m²

Storage:

The shelf life of the M-300 coarse sand concrete mixture in a dry, closed room is no more than 6 months from the date of sale, provided the packaging is intact. We guarantee the high quality and excellent strength characteristics of this dry mixture, subject to the rules of storage and transportation.

Package:

The mixture is packed in valve paper 3-layer Kraft bags. The weight of the bags is 40 kg.

Products are delivered on pallets.
Each pallet contains 35 bags (1.4 tons) MKU Standard company: Moscow, st. Nizhnie Polya, building 31, building 1, floor 3, room VI Phone: +7 (495) 374-86-23 e-mail:

Scope of application of M300 concrete

Due to its wide range of applications, developers prefer to buy M300 concrete for the needs of industrial and private construction, namely information and arrangement:

• industrial premises;
• utility buildings, warehouses, garages
• low-rise public buildings;
• cottages and country houses;
• during road construction.

Concrete obtained from M300 mortar is ideal for blind areas around buildings, driveways, foundations, and the construction of monolithic walls. has its own factories in Moscow and the Moscow region and offers cooperation in shipping the number of cubes of concrete required by the customer. Our own fleet of concrete mixer trucks allows us to buy M300 concrete in a plastic state with delivery throughout the Moscow region quite quickly.

Where is masonry fire-resistant mixture used?

The texture of the material resembles fine-grained concrete, and therefore is not suitable for finishing work. The masonry mixture is used when performing the following types of work:

1. Masonry of stone and brick for objects where high strength is important;
2. Installation of outdoor screeds, as well as the organization of indoor floors;
3. Production of reinforced concrete products on a construction site;
4. Preparation and strengthening of the foundation and walls;
5. Sealing cracks in monolithic structures;
6. Strengthening the adhesion of concrete sections with reinforcing materials;
7. Laying stoves and fireplaces with heat-resistant refractory mixture;
8. Creation of garden paths and areas in the local area.

The application possibilities can be expanded by including special additives and additives that RBU technologists will select based on the intended purpose of the solution.

Consultation on technical issues by phone: +7. Our technologist will select the component formula to suit your technical requirements and calculate the consumption.

Some advantages of the m-300 material

When conducting private or commercial construction, it is better to choose M300 concrete; it is worth buying it for a number of reasons:

1. resistant to negative natural factors;
2. durable, fire resistant;
3. ecologically pure
4. economical - the price for M300 concrete is more than reasonable;
5. the basic composition allows you to improve the properties of the final product to the desired level by introducing various additives.

Concrete grade M300 has 9 advantages:

1. Strong enough to be used to pour foundations for skyscrapers
2. Easy to prepare.
3. Resistant to mechanical stress, high humidity, fungus, mold, and efflorescence.
4. Easily resists chemicals and ultraviolet radiation.
5. Will last up to 140 years.
6. It is well represented on the construction market, so you can buy M350 concrete at any building materials store.
7. Wide scope of application.
8. High frost resistance.
9. Low water absorption coefficient.

Composition and proportions of concrete M250

The main points regarding the proportions and parameters of this type of solution are contained in GOST R 7473. They must be strictly observed, otherwise the finished product will not have the required qualities and will not cope well with its tasks.

The composition of the brand is largely traditional for all types of solutions:

Cement - the most commonly used cement grades are M400 and M500. If you are going to make concrete yourself, be sure to check the expiration dates of the cement. If it is expired, it will make the solution of poor quality. Filler - fine sand of classes 1 and 2 is used

It is very important to clean it after use. The sand should not contain any dirt, clay or other unnecessary impurities

Otherwise, the quality of the solution will deteriorate. Coarse aggregate - granite/limestone crushed stone or gravel is used as it. The last option has good qualities and a reasonable price. Water - used clean, without any additives or impurities. Additives - used to improve the quality of the material. They can increase frost and moisture resistance, resistance to external influences, etc.

Proportions for concrete production:

• 1 tsp cement;
• 2.1 parts sand;
• 3.9 hours of crushed stone.

For example, let's look at the solution recipe. Here is the amount of ingredients required for one cubic meter of concrete:

• 330 kg of cement;
• 740 kg of sand;
• 140 l of water;
• 1100 kg of crushed stone.

If you allow deviations in these parameters, the class of concrete will deteriorate and it may lose some of its properties. This is another reason why the calculations cannot be based on the maximum performance of concrete. Even with a slight deviation in the proportions or mass of components, its parameters are reduced, which can negatively affect the entire structure.

Delivery of M300 in Moscow

You can buy M300 concrete in Moscow with delivery for the following construction work:

• Pouring foundations for buildings up to 25 floors high.
• Construction of a concrete “cushion” for highways and runways.
• Production of high-strength shaped elements.
• Production of piles and other reinforced concrete products.
• Construction of columns, beams, pillars.
• Construction of hydraulic structures, bridges, metro tunnels.

We deliver concrete from 1 cubic meter every day!

Dial the number or fill out the contact form and order the solution at an affordable price per cube. Call!

Application

High performance of the mortar accordingly increases its cost, so it is advisable to use the material for its intended purpose, for particularly critical areas of construction work:

• installation of floors in public buildings and structures with heavy traffic;
• underlying base for floor tiles in factory workshops and production and storage facilities;
• installation of assembly joints of reinforced concrete structures and foundations;
• masonry of load-bearing walls of considerable height and thickness;
• plastering on the outside of buildings;
• facing walls and floors with heavy natural stone;
• production of external decorative frames, pilasters, slopes, arches;
• plastering work in damp rooms, basements, caissons, cellars and other underground structures.

For individual construction, the M300 solution is used in cases where the structure is being erected in a lowland and with close groundwater, for the construction of columns, arches, pools, fountains, and stairs. It is possible to add insulating filler, decorative stones, and reinforcing synthetic fibers to the cement-sand mortar.