Characteristics and scope of concrete grade M450

ATTENTION! In the summer-autumn of 2022, prices for concrete and mortar increased significantly. During June-September, prices for crushed gravel concrete increased by

500 rubles, on granite - on

800 rubles. See more In this regard, the RETAIL prices below for 1 m3 of concrete and mortar dated May 13, 2022 for the specified region, with VAT in rubles per m3, WITHOUT CONSIDERATION OF DELIVERY COSTS, are very outdated, and publishing current prices is problematic, since they are constantly updated.

If you are interested in M450 concrete and its price per 1 m3, you can order it by phone, email [email protected] or by making a request through the form using the link below. To protect yourself from misunderstandings, before ordering you should clarify:

• the relevance of the price per cubic meter presented on the website,
• cost of delivery by mixer to your facility,
• Do you mean concrete, otherwise some people think that the B35 is the M350.

Concrete M450 (B35): price list

The price is valid as of October 19, 2022, when ordering from 1000 m³, the cost per 1 m3 is in rubles, excluding delivery costs.

*Price is valid for orders over 1000 m3. For smaller volumes, check the cost with our managers.

Composition, properties

The composition of concrete includes high-grade cement, sand, corresponding to a certain GOST, of the first quality class. Before use, the sand is washed very thoroughly, various foreign impurities and dirt are removed from it. For production, crushed stone with a hardness of at least 1200 is taken. The stone has such properties without cracks or any defects. The composition may contain plasticizers, some of which are required.

The mobility of the cement mixture varies, it can be from P2 to P5, water resistance is W12, W14, frost resistance is F300. After hardening of this mixture, its thermal insulation qualities decrease, but water resistance and frost resistance, on the contrary, increase. Due to these qualities, such concrete is used for the construction of hydraulic structures and various types of objects that are located in places with high groundwater.

The peculiarity of this mixture is its rapid hardening. In order to slow down this process, special additives can be added. The mixture will reach complete hardening after three weeks.

Component consumption

To prepare the solution, you need to take a certain amount of the necessary components. To mix 1 m3 of concrete, the following ingredients are required:

• Sand class 1 - 860 kg. The component must fully comply with GOST. It is thoroughly washed to minimize the entry of impurities and other contaminants into the solution.
• An aqueous solution that increases the mobility of the composition and improves some properties. The solution is also called superplasticizer. The concentration is 30%.
• Cement M400 - 405 kg. It is prohibited to use raw materials of a lower grade; this will certainly negatively affect the quality of the finished product.
• Granite crushed stone - 1075 kg. This component is the basis of the mixture, it compacts it and improves strength. The size of the fractions can vary from 5 to 20 mm.

READ Production and use of concrete grade M250, strength class B20

Properties (characteristics) of concrete M 450 class B35

One of the main properties of this material is high strength. It allows the use of B35 concrete in the construction of structures that are constantly exposed to serious external influences.

As for water resistance, for this material this indicator is in the range of W8 - W14. Also, one of the reasons to buy M450 concrete is its high resistance to open fire. And due to the mobility of the P3-P5 material, it is possible to construct hydraulic structures using this concrete in places where there is a constant change in water level. The frost resistance of structures in the construction of which this class of concrete is used corresponds to class F300.

Composition of concrete M 450 class B35

Concrete grade M-450 is produced using a recipe similar to similar other substances. Cement, sand, aggregate and water are used in its production. In this case, sand for preparing the solution is taken only of the first class. As for the aggregate, heavy concrete B35 is made using only granite crushed stone. It determines high strength, frost and moisture resistance of the material in question.

Laying features

Heavy mixtures are laid in layers 15-20 cm thick in formwork, carefully compacted with bayonet or vibrating tools. Additives are used for coatings that increase the setting time to 2 hours.

After pouring, heavy concrete requires careful maintenance. To hydrate cement grains, a sufficient amount of water and a positive temperature are needed. 12-15 hours after installation, the surface of the monolith is covered with moisture-proof films. If necessary, the structure is insulated and heating is applied. The formwork is removed after a week, and from the bending elements - after 21 days.

Concrete B35 is intended for critical structures experiencing heavy loads. High strength is achieved by increased cement content. In private construction, the use of the material is not economically justified.

Concrete:

Over the decade of its work, Concrete has established itself as a manufacturer of very high-quality products.

The plant's purchasing department contacts only the most trusted suppliers of raw materials. The plant has very strict control over both concrete components and finished products. Concrete is produced using imported equipment.

"Prime" uses the most modern equipment from Germany.

All batches of concrete are supplied with a quality certificate. Our concrete fully complies with GOST 7473-2010.

The company has a laboratory with the required level of accreditation, as well as a time-tested team of specialists.

Our prices will pleasantly surprise you. The concrete produced not only meets all modern requirements. Moreover, for regular customers there is the opportunity to buy concrete at a wholesale price and receive special conditions for constant cooperation.

A well-developed logistics system allows us to deliver concrete not only in St. Petersburg, but throughout the Leningrad region. Their mixers can deliver concrete from 6 to 9 cubic meters to the site with one machine.

Also, in addition to ready-mixed concrete, we provide various special equipment for rent. The company's fleet includes over forty vehicles - dump trucks, mixers for transporting concrete, concrete pumps with booms of different lengths.

Recommendations for selection

The main criterion when choosing a concrete grade is the design. In the absence of such documentation, it is necessary to build on the existing practice of using concrete for pouring certain structures.

The most important aspects:

• expected load on the structure;
• estimated period of operation of the structure;
• type of construction;
• waterproof requirements.

There are several main types of concrete structures, for the construction of which it is necessary to use certain grades of concrete. Some of them:

• foundation of light buildings, floor - M200, M250;
• walls, blind areas, foundations of critical structures, columns - M350, M400;
• special-purpose hydraulic structures and other structures that are subject to special strength requirements - M550, M600;
• concrete screed for floor coverings - M100, M150;
• strip and pile foundations, monolithic floors - M300, M350;
• walls of hydraulic structures, highly loaded piles, bridges, crossbars - M400, M550.

READ Characteristics of M600 concrete and its application

Concrete M450 (B 35)

produces concrete mixtures of various classes and brands with delivery throughout Rostov-on-Don and the Rostov region. To purchase M450 concrete, call from 8 a.m. to 8 p.m. (7 days a week). Our specialists will advise you free of charge. To help you navigate the features of M450 concrete, we have prepared this article.

An important characteristic of any structure is its reliability. To ensure the strength and durability of a building, it is necessary to carefully select materials for construction. Concrete is the optimal material at the moment. Let's consider Concrete grade M450. It has high strength, which allows it to become a raw material for the manufacture of very durable elements with a long service life.

What is the strength of M450 concrete?

Concrete grade 450 is a fairly abstract concept for the average person. In addition to this term, you can also find the phrase “brand strength”. This value shows the maximum weight the structure will be able to withstand after gaining strength. To determine the brand, laboratory tests are carried out 28 days after pouring. During these 4 weeks, an average temperature of +20 degrees Celsius should be maintained.

Concrete M 450 has a compressive strength of 450 kgf/cm2 (kilogram-force per square centimeter). This is quite a large value for private construction. It is important to note that when the outside temperature is below +20°C, it will take more time to gain strength. At temperatures below 0°C, the process slows down so much that additional heating is required for normal hardening.

Brand strength is not the final characteristic of concrete. After pouring, hardening continues for several months. That is why in tables showing the dependence of hardening time on temperature, you can find strength values ​​of more than 100%.

Concrete grade M450 and class B35 - what is the difference?

Before you buy M450 concrete, it is worth finding out what the compressive strength class is. The concrete class is designated by the letter B. The difference from the brand is that the strength value is given not in kgf/cm2, but in MPa, which are units of pressure.

Concrete grade 450 corresponds to class B35 in terms of technical characteristics. These materials are interchangeable. The only difference is that the designations are made according to regulatory documents developed at different times.

Technical characteristics of concrete b35

In addition to the grade of concrete for compression, there are several other important properties that need to be taken into account when choosing products:

– shows how many years a structure can last outdoors under conditions of changing seasons from cold to warm (for outdoor structures it is selected within F50 - F150); the standard indicator for this brand of concrete is F200.
• Moisture resistance - under normal operating conditions, W4 or W6 is selected; for parts of the building exposed to moisture, it is worth choosing higher values; the standard indicator for this brand of concrete is W8.
• Mobility - depends on the method of feeding the concrete mixture into the formwork (mold); for a concrete pump, the requirements are as follows: the concrete must have a mobility of at least P4.

A competent choice of concrete grade for all main indicators is the key to the reliability of the future structure.

Density of heavy concrete M450

The material in question refers to heavy concrete. Concrete B35 has a high density, on average 2.4 tons per cubic meter. The exact value depends on the bulk density of the aggregates. The crushed stone in its composition has a strong influence on the density of M450 concrete.

Application of concrete M 450

High density and strength characteristics allow B35 concrete to become an ideal raw material for creating the following types of structures:

• foundations for heavy and multi-story buildings;
• floors with sufficiently large spans and loads;
• special structures;
• bridge supports (columns).

B35 concrete should be used for critical elements of buildings and structures that experience heavy loads.

Concrete composition m 450 (b 35) per 1 m3

To ensure a high quality concrete mixture, the following factors affecting it must be taken into account:

• quality of raw materials used for mixing concrete m 450 (in 35);
• maintaining the proportions of the components;
• compliance with technology in the production of concrete mixture.

That is why higher quality and strict compliance of B35 concrete with the characteristics can only be ensured in a factory environment with special equipment.

When considering the quality of materials used, it is important to know the following:

• Cement grade M500 is used in the production of concrete. This material is characterized by high strength. During storage, all conditions are strictly observed, so the likelihood of adding damp cement to the mixture is minimized.
• Adding river sand to the composition instead of cheaper quarry sand allows you to avoid harmful impurities getting into the material. The sand is additionally screened from silt, dust and clay, which are dangerous because they lead to high shrinkage of concrete during the hardening process.
• Strong crushed stone (1200 kg/cm2) is used as coarse aggregate. The strength of the entire concrete largely depends on the strength of this component. The crushed stone size is selected in strict accordance with regulatory documents (usually a fraction of 5–20 mm).
• Water is needed in order to obtain a mixture of all these components. It is not allowed to contain impurities in the liquid that are hazardous to both human health and the quality of the material. To prepare concrete M 450, only purified water is used.

In addition to the main components, the composition of concrete B35 (m450) includes special additives or modifiers. These substances include:

• frost-resistant additives;
• plasticizers, which reduce the likelihood of cracks appearing on the surface and increase plasticity when laying in formwork;
• hardening accelerators or retarders (the need for their use depends on the required setting time).

Where to buy concrete B 35 with delivery at a low price per m3?

It is important that the material production plant uses only high-quality raw materials. This is especially true for such high brands as M450 (B35). If you need to order concrete M 450 (B 35) in Rostov-on-Don, then you should contact.

If you choose concrete from Rostov-on-Don, produced strictly in accordance with GOST 26633–2012, you don’t have to worry about the quality of the main components, modifiers and the concrete itself. In addition, we will offer timely and accurate delivery of the ordered concrete. Call the phone number provided.

Over 8 years of hard work, we have gained a reputation as an excellent manufacturer!” More details

Areas of use

Concrete of this grade is not used in the construction of houses due to its characteristics and high pricing policy. However, it has a wide scope of application in other areas:

• Firstly, the construction of supports for large objects and bridges. The solution must be mixed at the factory to avoid poor quality mixing and ensure reliability. Concrete grade M450 must be reinforced in order to avoid the appearance of cracks during operation.
• Secondly, the construction of hydraulic structures. This brand is necessary because structures have a high level of loads. If you don't use a high-quality solution, everything will collapse in a short time. All its characteristics are suitable here, especially moisture resistance, because structures can be under water.
• Thirdly, the construction of walls for the metro and other underground facilities. Here it is important not to forget about reinforcement. The effect will be enhanced thanks to metal meshes under tension, because contraction occurs from the inside.
• Fourth, the construction of walls for bunkers. Here the effect is achieved by adding metal shavings to the solution, which will delay radiation. Thanks to the mass of the components, the destructive effect of the shock wave is reduced.
• Fifthly, runways at airfields are made from this concrete mixture, due to the fact that the solution can withstand heavy loads.

This brand is used in the construction of swimming pools, water parks, dams, and dams. The design is waterproof and reliable.

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