Specific weight of 1 cube of concrete. Separation by Specific Gravity

Answer: The theoretical determination of the weight of a building mortar cube is complicated by the fact that mortars can have several components (complex mortars), a different ratio of these components, as well as different types of sand in terms of grain density.

The weight of 1 cube of solution directly depends not only on its components, but also on humidity. According to GOST, according to the average density, solutions are divided into light and heavy. Light mortars include building mortars with a bulk weight of less than 1500 kg/m 3 . Heavy solutions, respectively, include solutions with a bulk density of more than 1500 kg/m 3 . Heavy mortars are prepared on aggregates with a bulk density of more than 1200 kg/m 3 and, when hardened, they have greater strength and density. Light solution due to the presence of many air pores have a lower thermal conductivity. The weight of the solution cube also depends on the size of the aggregate grains, as well as on the particle size distribution - the ratio of the aggregate grains by size. largest volume weight filler and, as a consequence, the solution will be if a certain ratio between the number of grains of different sizes is observed. For example, 1 m 3 of sand with grains with a diameter of 1 mm weighs about 1400 kg, and from a mixture of grains of 0.15-5 mm it already weighs 1600-1700 kg.
And given that sand is not the only type of aggregate, we can conclude that the weight cubic meter a complex solution can only be established experimentally, by weighing vehicles, or roughly using the tables:

Tab. Weight of 1 cube of solution depending on the type of binder and fillers

A lot of information is devoted not only to how to create the right and quality concrete how to buy the right dry mix at the store or how to make it. Reverent attention is also paid to indicators of the quality of concrete. These indicators are determined on the basis of various parameters, where its main characteristics are taken into account. One of these dominant characteristics is weight.

Is it possible to do without it during construction? Not! And we need weight tables to calculate the forces during the installation of structures, the availability of special equipment. And in general, I want to know what to expect in the process of working with building materials.

How much does one cube of concrete weigh? How is this weight calculated and what is meant by it? To answer all these questions, we recommend that you familiarize yourself with our material, where we will analyze how much concrete weighs, and also write everything down for convenience in the form of a table.

What does weight depend on?

As in any other case, we need to start with theoretical foundations. First, let's find out what, in fact, is this very weight. concrete pavement for every 1m3.

What are the main indicators of the quality of concrete we know. Of course these are:

• strength and durability;
• frost resistance and moisture resistance;
• degree of setting (hardening rate);
• weight of concrete per 1m3.

This, of course, is not all, but the main indicators (all indicators are in guests, tables, if desired). It is important to understand here that the concept of weight per 1m3 is based on the intersection of the concepts of strength and weight. The fact is that the strength and ability to hold different kind the load on the concrete will be based on the density of the product. We already know that concrete blocks are different.

Note that the more cement in the solution, the denser the concrete, which means that 1m3 of material will weigh much higher. The unit of density measurement is known to us as kg/m3.

The weight also depends on the type of filler you choose, which are gravel, sand, gravel. On the Internet you can find hundreds of tables with different proportions of these materials, including on our website.

How are concrete solutions classified by weight?

What is the classification of concrete separation according to specific gravity? The weight spectrum of 1m3 is as follows:

1. Extremely light - up to 500 kg.
2. Lightweight - 500 kg -1.8t.
3. Heavy mortar - approximately 1.8-2.5 tons.
4. Particularly heavy - over 2.5 tons up to 3 tons.

Let's take a closer look at each type to get our bearings. We will consider in descending order of gravity of weight per 1m3.

Particularly heavy

Let's start with the very first one. We will analyze this type extremely quickly, since you will not even find it in the table - it does not provide for use in private construction of a house, where use is not advisable. Can you imagine what kind of concrete strength it should be if its weight for every 1m3 is as much as 3000 kg! Unless, if you have not decided to build a nuclear reactor or a bank vault at home. Like the familiar brands M500 and M450.

Heavy

It consists of a mixture with large or heavy fillers. The total weight will reach no more than 2500 kg, which means the introduction of a little more than a ton of crushed stone and 700 kg of sand element per 200 liters. water. Traditional concrete that produces high-strength structures, excellent screeds and durable, high-strength fencing. They include brands from M300 to M400. And also often M250.

Lungs

These include varieties of concrete with porous fillers. Instead of crushed stone or gravel, there is vermiculite, expanded clay or foam type perlite. As you know by foam and aerated concrete blocks and according to their weight tables, the porous structure reduces it significantly. But sand is used in any case. All 1 m3 - up to 1800 kg. Concrete M200 and M150. Excellent screed, fencing, blocks, etc.

Extra light

These are the ones mentioned above honeycomb blocks, which are also made of concrete, only with a special cooking technology. A mortar of cement and sand using a foaming agent. The resulting air pores increase porosity and create interesting combination: blocks with excellent thermal insulation and light weight, which is simply amazing when installed. Such concrete is used for slabs and block products from which buildings are built in the process. The weight of 1m3 is about 500 kg.

Separation of concrete by brand

It's not so much about dividing concrete into classes and brands, but about dividing its weight criteria based on the brand. As we remember, they are from M50 to M1000, but in fact, in practice, a range from M75 to M500 is needed - the rest are not considered at all.

As you understand, the brand depends on the strength of the material, and hence on the selected proportions. Let's take a closer look at the example of the table, how the requirements for cement change and how the amount of required materials for different grades changes:

As you can see, in this case, we understand that the strength of concrete is not related to weight, but depends solely on the brand of cement chosen. You can achieve the same strength by reducing the weight of 1m3, taking a higher quality cement. So, if we need M300 cement for M100 concrete, then we can take M400-M500 cement and use it much less in quantity. As a result, the strength will not suffer and the load during installation will decrease. Please note that the quantity and fillers will then change.

And yet, it is possible to distinguish the classic weight of 1m3 of concrete, depending on the brand. This is clearly seen in this table:

And here is another similar useful table that gives you data on the weight characteristics of the dry mix:

It is important to take into account that it is extremely difficult to accurately calculate the weight of concrete and all components from the tables, because these indicators depend on many factors. You were convinced of the influence of the brand, the influence of the strength and composition of the selected components, their density. Do not forget that the size of the filler fractions, the presence of a porous structure, as well as the volume of water poured into the composition, which is extremely difficult to calculate, are also taken into account. So you need to focus not only on the tables, but also on yourself and your mind.

You can leave your comment below. We hope that this material has become useful for you. We invite you to watch this video on the selected topic:

One of the main indicators concrete mortar is its density. And when the question is raised, how much does a cube of concrete weigh, it is necessary to understand that we are talking about density, the unit of which is kg / m³.

And the higher the density, the greater the weight of the solution itself. It must be remembered that these two indicators will depend on the type of filler. Hence the main classification of artificial stone.

Separation by Specific Gravity

There are four groups in the classification, weight ranges of 1 m 3 of the mixture:

1. Heavy 1800-2500 kg.
2. Light 500-1800 kg.
3. Particularly heavy 2500-3000 kg.
4. Extremely light up to 500 kg.

Heavy

The composition of this solution includes large and heavy fillers (crushed stone, gravel, coarse sand). A cubic meter of material weighs 1800-2500 kg. Even according to the recipe, it becomes clear that the bulk of the mixture is occupied by fillers.

For example, the standard recipe includes: 1200-1300 kilograms of gravel or crushed stone, 600-700 kilograms of sand and only 250-450 kg of cement. The volume of water is 150-200 l.

These are traditional (classic) types of concretes that are used for a wide range of purposes. Of these, load-bearing structures, screeds, fences, etc. are poured.

Lungs

As fillers for this type, porous materials are used, such as expanded clay, vermiculite, foamed perlite, waste various industries. The porosity of the material reduces the weight of concrete, which is why it is called light.

The weight of a concrete cube of this type ranges from 500-1800 kg. Not all light types use sand. But if according to the recipe it should be present, then its mass in 1 m 3 is approximately 600 kilograms. Light solutions are used for pouring screeds, fences, block products.

Particularly heavy

In private housing construction, this type is not used. Let's just define its performance. The mass of 1 m 3 of such concrete is 2500-3000 kg. The main volume is occupied by large aggregates. Be sure to use cement with high strength. Most often, this type is used as a protective structure in nuclear reactors.

Extra light

Essentially, this cellular concrete, which do not contain large fillers. This is a solution based on cement and sand, where a foaming agent is added. In this case, air pores are formed inside the solution (their volume is 85%). Therefore, the specific gravity is very low: less than 500 kilograms. More often this species used for the production of slabs and blocks that act as insulation.

Separation by brand

In the production of heavy concrete, namely, they are classic, there are several grades. The ratio of components in the recipe of each brand is different. Somewhere more fillers, somewhere less. Accordingly, the mass of concrete will be different. The differences are minor, but they exist.

Below is a table showing the ratios of components in different brands.

As you can see, the strength of the concrete solution has nothing to do with weight. It depends on the brand of cement. True, there is one nuance here. For example, you did not find M400 brand cement, but purchased M300. Is it possible to make M200 concrete out of it? No problem.

Recipe change

You will have to increase the amount of cement applied by decreasing the amount of fillers applied. In this case, the recipe might be:

• cement M300 - 350 kg;
• sand - 795 kg;
• crushed stone - 1080 kg;
• water - 175 l.

The weight of concrete will decrease due to a large reduction in the volume of crushed stone, while the strength will increase. There are no standard recipes in which you can change the grade of cement to a higher or lower one. Therefore, at home, adjusting a changing recipe to a new one is very difficult.

Below is a table of concrete mix weights by brand.

In the factory, it is much easier to do this; laboratories do it there. Therefore, experts recommend using classic recipes, using the required components in them, especially for the brand of cement.

Ready cement mixes

Manufacturers of dry mixes based on cement, understanding the complexity of creating a solution in exact proportions, today offer ready mixes, in which all components are adjusted to a certain strength. This simplifies the process of making concrete mortar, plus guarantees its quality characteristics.

Concrete is perhaps the most common building material used in various construction works starting from overhauls, and ending with the construction of buildings. However, regardless of the type of event, any work begins with planning and calculation required material, moreover, not only in quantity, but also in characteristics. In particular, builders often face the task of calculating how much a cube of concrete weighs, which, in fact, is the subject of this article.

General information

First of all, it should be noted that builders do not use such a concept as "specific gravity of concrete". This is due to the fact that the material may contain in its composition a variety of components that have different weights.

For example, as a filler can be used:

• Pebble;
• Crushed stone or gravel;
• Expanded clay, etc.

And even if the same composition is used for the preparation of solutions, the weight of 1 cube of concrete in different occasions may be different. The fact is that the same filler can have different fractions. And the larger the fraction, the correspondingly more voids and less mass.

At the same time, builders are always interested in how much one cube of concrete weighs, since the specific application of the material depends on this indicator. In particular, on the basis of weight, structural calculations are performed, for example, they determine the type of foundation for different types soil. The same applies to the rest of the load-bearing elements.

In practice, builders operate with such a parameter as "volumetric weight", however, it should be understood that this characteristic is not a constant. In addition, the calculation takes into account the volume of liquid used to prepare the solution.

Types of compositions

As mentioned above, concretes can have different composition, resulting in a change in their mass.

Depending on this, there are several types of them:

• Particularly heavy and heavy;
• Particularly light and lightweight.

Now let's take a closer look at the features of each type.

Heavy

As a filler for this material, solid rocks are used:

• Gravel;
• Rubble.

Such solutions are used to make carriers. In their manufacture, I use a certain share ratio, however, it is not constant.

Therefore, it is impossible to give an exact figure of how much a cubic meter of concrete weighs. As a rule, its mass ranges from 1,800 to 2,500 kg/m3

As for especially heavy compositions, they are used quite rarely, as a rule, in the construction of special industrial facilities. IN housing construction such material is not used.

How much 1 cube of concrete weighs, in this case, determines the mass of barite or hematite, which is used as a filler. In addition, the composition of the material may include cast iron "shot" and iron ore. I must say that the technology of its production requires the use of cements of high grades.

The volumetric weight of this material is 2,500 - 3,000 kg per cubic meter. Accordingly, the price of such compositions is the highest.

Lightweight and ultralight concretes

This material differs from the above described in a more porous structure. As a result, the weight of a cube of concrete of this class is 500 - 1800 kg.

In this case, light materials are used as fillers, such as:

• Expanded clay and others.

Lightweight materials are used, as a rule, in the construction of partitions and walls of light buildings.

The weight of 1 meter of ultra-light cubic concrete is even less - up to 500 kg. A small mass is achieved through the use of fillers such as perlite and vermiculite, as well as some other substances.

Since the strength of the material is very low, it is used in construction as heat insulators, for example, when sealing seams and joints.

In the photo - the structure of foam concrete

Separately, it should be said about such types of material as foam concrete and aerated concrete. Their small mass is not due to fillers, but to the cellular structure. The pores in such materials are formed as a result of the release of gases, in the process chemical reaction in solution, or in the process of mixing the solution with foam.

Their main advantage is a low level of thermal conductivity, as well as a high coefficient of vapor permeability.

Note!
Some brands of aerated concrete can be used in the construction load-bearing structures with limited loads.

Determination of weight

To find out how much 1 cubic meter of concrete weighs, you can look at SNiP No. II-3. This standard specifies the weight various kinds compositions, depending on the type of filler. The table shows the data of some of them:

Of course, the weight of a cubic meter of concrete in this case is approximate, but these data can be used as a guide to determine the mass of material in the "pouring". I must say that the exact data, up to the calculation of several kilograms, does not imply any calculation.

It should also be noted that developers often determine the weight of 1 cubic meter of concrete, taking into account the grade of the material. The table shows the data:

Note!
In practice, data on the mass of concrete may be needed not only during the construction or repair of any structures, but also during the demolition and dismantling of structures.
For example, to determine the carrying capacity of vehicles for garbage collection.

It's important to know

Before proceeding with the calculation of the weight of the structure, we recommend that you familiarize yourself with the following information:

• Many novice builders make the mistake of trying to get the mass of concrete by calculating the specific gravity of all components and summing them up. The data obtained turn out to be far from real, since this indicator may even depend on the quality of the batch. For example, the solution can be made by hand or in a concrete mixer.
• Many builders believe that the specific gravity of a material is an indicator of its strength and reliability.. However, this opinion is erroneous, since the strength is determined by the brand of cement. The table above shows this.
• The mass of the solution and the frozen structure is significantly different, since in the process of solidification, water evaporates.

Note!
The strength and reliability of concrete is affected even by the extent to which the instructions for its preparation are followed.
The solution must be poured in a certain order, and be sure to mix well, until a homogeneous mass with a filler evenly distributed in it.
Too much water in the formulation can damage the material.

Here, perhaps, are all the main points, knowing which, you can calculate the weight of the structure.

Output

The weight of concrete depends on a number of factors, so it is impossible to calculate the exact value. However, focusing on the type of filler, you can get an approximate value, which is quite enough to calculate the weight of a concrete structure.

From the video in this article you can get Additional information on this topic.

When working with any kind building material, it is imperative to know its main characteristics in order to facilitate its use. The properties and characteristics of concrete should be known first of all, because it is one of the most popular materials.

The weight of the product significantly affects the installation and installation process, and also affects how much the entire structure will weigh, its volumetric characteristics. Based on this, we can say that it is much easier to work with light material. And everything is greatly simplified if you know that this indicator can be controlled and achieve the desired weight. But within what limits can you work? How much should the concrete we need weigh, how to regulate its weight so as not to affect the insulating qualities?

First of all, we need to calculate the weight in order to understand at the design stage how many kg the base will have to withstand. Let's find out together how much concrete should weigh and how to understand it.

Classification of the specific gravity of 1 cube of concrete:

The most common way to classify the weight of a cube of composition is by division according to specific gravity. According to the volumetric mass, there are such types of concrete as:

1. Particularly light: maximum weight of 500 kg per cube. The content of air cells with a diameter of 1-1.5 mm and a porous base is characterized. These are foam and gas blocks familiar to us, which basically have not only classic cement and sand, but also a foaming agent that creates cells with air. This allows you to create a low weight and good thermal insulation ability.
2. Light: 500 kg - 1.8 tons per cubic meter a porous structure, which is determined by how many different light fractions it contains, such as expanded clay, tuff, pumice or vermiculite. The sand content in them is about 600 kg per cubic meter. It makes excellent blocks and partitions, lightweight structures, lightweight blocks, like cinder concrete.
3. Heavy: 1800 - 2500 kg. Often they contain gravel and crushed stone, sand of large fractions as a filler, mineral fillers, quartz sand are used. There are also about 200 liters of water and 250-450 kg of cement. This is the most commonly used concrete in our construction.
4. Especially heavy: 2.5 -3.5 tons. Fillers based on a group of minerals such as barites, magnetites, limonites are applicable here. Considering the huge mass of such mixtures. In principle, you should not even get hung up on them, because. they are in private construction and are not closely used, mainly in industry.

Determination of the weight of 1 cube of concrete

How to determine how much is the weight of concrete? To do this, to begin with, let's look at SNiP No. II-3, where for our convenience they made tables for calculating weight different products, depending on the type of filler. Naturally, we attach the table below for you:

Please note that even in this case, everything is approximate, but you can already use them if you need parameters when filling. You will not find complete and accurate data, up to one kilogram, anywhere. And why? But because how much 1 cube of concrete will weigh depends on many factors.

In practice, note that:

• The mass of the solution of the solidified mixture will differ from the mass of the dry components with water when kneading;
• The density of the composition is determined for the most part by the filler and its structure;
• Specific gravity and density are different concepts both in meaning and in name;
• The method of preparation is the main factor affecting the mass of the cube;
• The density of concrete and the weight of 1 m3 will be much greater if you use the deep method of compacting the mixture. Its use will allow to achieve greater strength.

Do not forget that the main thing for us is to achieve the strength of concrete, which means to mix the solution in such a way as to get a certain brand. Often the weight of concrete depends on the grade you choose.

Pay attention to the characteristics of each of them. The most common in use is the M300 and M350 (v25). Which are used in private construction for arranging foundations, walls and partitions, flights of stairs and even ceilings, columns, etc. Both the M100 and M200 brands are widely used. Today, according to the data, you can find out how much a cubic meter of each practical brand weighs. The relevant table is attached:

According to most tables, the approximate weight of concrete used in private construction is 2300 ... 2500 kg per cube, which means it average density taken as 2400 kg/m3.

note

When calculating the weight of a structure, it is important to know the following data in order to avoid errors:

1. It is impossible to allow the required mass of concrete to be obtained by calculating the specific gravity of each element of the mortar and adding these values ​​together. This is the most common mistake that is often made. The fact is that these data will be extremely far from the real ones, because in fact a lot depends on the batch. One cubic meter of concrete will weigh differently with the same number of components. You can knead the mixture by hand or do it in a concrete mixer - the result will be different.
2. Many people think that the higher the weight, the greater the strength of the material. The specific gravity does not affect the reliability and strength of the material. Only the density of cement in the solution can influence the brand, and the brand already determines the quality. Strength will also depend on the quality of the concrete mix and adherence to the instructions for its manufacture.
3. The mass of the mixture you made will weigh differently than the frozen structural element due to the evaporation of moisture.
4. When kneading, even the most accurate calculation can be ruined by water. Be careful not to spoil the end result.

In this article, we tried to answer all your questions regarding the topic. Also pay attention to the video at the end, in which you will learn how to calculate the cubature:

rusbetonplus.ru

Weight table 1 cubic meter of concrete

The range of application of cement mortar is very large: from finishing the walls of a residential building to building massive dams. Knowledge of weight concrete structures and reinforced concrete products is of no small importance in the design of various objects. To do this, you need to know how much one cube of concrete weighs, and what affects this value.

What does weight depend on?

When the question arises about the weight of a cubic meter of concrete mix, it should be understood that we are talking about density. It is one of the main technical parameters of cement mortar. The unit of measurement is kg/cm3. The higher the density, the greater the weight of the concrete. Both of these values ​​directly depend on the type of filler. It is according to him that the classification of solutions is made. We recommend that you study what characteristics are affected by the value of the specific gravity of 1 m3 of concrete.

How much does different concrete weigh?

Specifications It is customary to display by dividing into classes and brands. When deciding specific tasks this helps to correctly and accurately select the concrete mix.

1. Classes of concrete.

This is the most common (classic) type mortars. It is best suited for the construction of the main elements of load-bearing structures, pouring screeds, erecting fences, etc. The composition of heavy concrete includes large-sized and massive fillers: coarse sand, gravel, crushed stone. It is they who occupy the bulk of the mixture. A cubic meter of such material weighs 1800-2500 kg.

The name of the concrete group is defined structural features fillers. In the manufacture of expanded clay, vermiculite, perlite, various industrial waste. The porous structure of these materials reduces the weight of the cube of the finished solution to 500-1800 kg.

Sand is not found in all lightweight concrete. Where it is provided for by the recipe, its mass in 1 m3 is 600 kg. Lightweight concretes are used in the construction of building blocks, enclosing structures or pouring screeds.

• Particularly heavy (super heavy).

In production, metal fillers are used, giving massiveness finished products. The weight of a cube of concrete is 2500-3000 kg. In the composition of super-heavy mixtures, cement of increased strength is necessarily present. In private housing construction they do not apply. They are usually used to make protective structures. special purpose, for example, for nuclear reactors.

• Extra light (heat-insulating)

This group includes cellular concrete, in which there are no large fillers. In their composition, in addition to cement and sand, foaming agents are present. During the production process, voids are formed inside, occupying up to 85% of the total volume. Therefore, the mass of the cube is very low - less than 500 kg. To enhance strength, special plasticizers are added to cellular solutions.

Particularly light types of concrete are used in the production of blocks and slabs with high heat-insulating properties. Their disadvantage is weak frost resistance. Therefore, building elements with a porous structure require mandatory waterproofing.

2. Grades of concrete.

In the group of heavy solutions, there is an internal classification. It is determined by the different ratio of components in the recipes. Depending on this, the mass of a cubic meter of each brand is somewhat different.

Ratio table:

Reducing the volume of the filler leads to a decrease in the mass of the cube and an increase in the strength of concrete. Replacing cement of one brand with another affects the strength. To prevent this, you need to make changes to the layout of the components. At the plant, such tasks are solved in laboratories. At home, you have to adjust the ratio "by eye", which can adversely affect the quality of concrete. Therefore, in the manufacture of cement mortars with their own hands, construction experts recommend taking the classic recipes of the components as a basis.

Weight table different brands concrete:

Based on the data presented, it is easy to determine average weight one cubic meter. Experimental studies confirm theoretical calculations and show that 1 m3 of concrete solution weighs 2400 kg.

average cost cube of concrete

When the filling process large structures occurs continuously, it is advisable to order and bring ready-made concrete from the factory. Of course, it will cost more than manual kneading. After all, the customer has to pay for all production work, delivery, loading and unloading of the machine.

The final price of a cube of ready-mixed concrete is a variable value and depends on many factors:

• Brand - determined technical requirements for every type of building.
• Filler - a cubic meter of gravel-based solution costs 100-150 rubles cheaper than granite concrete.
• Remoteness of the working site - delivery by big city or in off-road conditions is more expensive.
• Boom Length - A concrete pump truck is not required in all cases.
• Days of the week - on weekends and holidays, the cost of a cubic meter of concrete mix is ​​usually higher.
• Order volume – more than profitable terms sales.

Price table for ready-mixed concrete:

When only a few cubes of mortar are needed, it can be prepared on site. Manual kneading is beneficial when pouring small elements: stairs, garden paths, architectural details small forms. The price of such concrete is quite affordable for any developer.

stroitel-lab.ru

How much does 1 cube of concrete of various grades weigh?

Let's talk about what you need to know this characteristic. The fact is that the area of ​​​​its application, strength, thermal conductivity and cost directly depend on the specific gravity (density) of one or another type of this building material.

The following “equality” is true here: the higher the density, measured in kg / m3, the greater the weight of the final product. By and large, the weight of the solution depends on the type and mass of the filler: crushed stone, gravel, sand, expanded clay, slag and other types of filler. Accordingly, there are the following main types (types) of concrete:

• Heavy. The mass of 1 m3 is in the range from 1800 to 2400 kg;
• Lungs. Weight range 1 m3 from 500 to 1,800 kg;
• Particularly heavy. Weight range 1 m3 from 2450 to 2950 kg;
• Particularly light. The weight of the material with a volume of 1 m3 is up to 550 kg.

How much does 1 cube of concrete of different types weigh?

• heavy concretes. The composition of this type of building material includes coarse fractional fillers, characterized by a significant mass: crushed granite, gravel, river sand. In particular, the standard recipe for the preparation of 1 m3 of heavy concrete for wide use includes the following components: 1250-1300 kg of crushed stone (gravel), 650-700 kg of sand, 160-200 liters of water and 250-450 kg of Portland cement brand M400-M500. Scope of heavy concrete: any load-bearing elements, coupler, protections, etc.;
• Lightweight concrete. According to the name, porous (light) fillers are used to mix this type of material: expanded clay, vermiculite, foam perlite and waste from metallurgical and energy production. Lightweight concretes have a high porosity of the “body”, therefore they are used for the construction of: floor screed, walls of residential buildings, block products and internal partitions;
• Particularly heavy concrete. This type of material is generally not used in low-rise construction. Almost the entire volume of such concrete consists of large heavy components. High grade cements are used as a binder. Scope: construction of bridges, flyovers, protective structures of nuclear power plants and structures for hydraulic engineering purposes;
• Particularly lightweight concrete. These are the so-called "cellular" materials, which do not contain large aggregates. Lightweight concrete is a structural mortar made from cement, sand and a foaming agent. In this case, air pores appear in the body of the solution, occupying up to 85% of the volume. Particularly lightweight concretes are used for the production of "warm" blocks, slabs and non-load-bearing partitions.

Weight of 1 meter of cubic concrete of different grades

In accordance with GOST, heavy concretes are divided into grades from M100 to M600 (M100, M150, M200, M250, etc.). The composition of concrete of a particular brand depends on the ratio of the quantity: binder, sand, crushed stone, water, as well as on the brand of cement (usually Portland cement M400 or M500).

Accordingly, the mass of grades of 1 m3 of concrete of this type differs, however, so slightly that this difference can be neglected. In the general case, both professional builders and private developers use the figure 2,400 kg in calculations that involve the mass of 1 m3 of heavy concrete (no matter what brand).

salecement.ru

How much should a cube of concrete weigh, calculated values ​​and averages, formulas and calculation examples

The weight of concrete is a value that is very important both in the construction and dismantling of concrete buildings. The design features of the foundation and floors of the house will depend on it. The same indicator is used to determine the number and carrying capacity of the transport required to remove the debris when the building is destroyed. How to determine how much a cube of concrete weighs?

No one can give a definitive answer to this question without first asking a few clarifying questions. The weight of concrete is a value that depends on a combination of indicators such as:

• brand of cement;
• type of fillers;
• the amount of water used for mixing.

Depending on the above factors, the following types concrete, differing from each other in their specific gravity, that is, the mass of a cubic meter:

Extra light

Most often these are cement mortars filled with small air bubbles or pieces of perlite, vermiculite and other light minerals. They are used as heat insulators, when sealing various seams, joints, to eliminate cracks. They are unsuitable for the manufacture of load-bearing structures. In this case, the weight of a cube of concrete does not exceed 500 kg.

Lungs with brand M 100 or 150

The fillers in them are porous materials, for example, tuff, expanded clay or shell rock. There are types of mortars that do not contain either heavy or light stones in their composition. Their low weight is due to the presence of pores in the cement mortar. These include foam and aerated concrete.

A cubic meter of such mixtures can have a mass of 500 to 1800 kilograms. A significant proportion of them is occupied by sand, which in the cube of the finished solution can be up to 600 kg. Use such concrete mixtures for the manufacture of wall blocks.

Heavy, grades M 200, 250, 300

These are classic concretes, in which gravel or crushed stone act as aggregates. They are prepared using a ratio of 1:2:4:0.5 or 1:3:5:0.5, where the first digit is the volume content of the binder component - cement, and the rest are sand, crushed stone and water, respectively.

For example, to prepare a cubic meter of such a concrete solution, it will be necessary to spend from 250 to 400 kg of cement, depending on its brand, 600 - 700 kg of sand, 1200 - 1300 kg of gravel or crushed stone and pour this mixture with 170 - 200 liters of water.

These values ​​are inaccurate and can vary widely. However, concrete is produced in large volumes, so a few kilograms lost and added in the calculations will not play a significant role.

A cube of such concrete has a mass of 1800 to 2500 kg. The range of areas of its application is very wide. This includes pouring foundations and building monolithic walls, and manufacturing reinforced concrete slabs and blocks. Such a solution is suitable for pouring screeds, paths, platforms, making fences and stairs. Concrete of the specified brands - the most demanded.

Particularly heavy, grades M400 or 500

Here, waste from the metallurgical industry (metal scrap), as well as magnetite, barite, hematite, are used as fillers. In the construction of residential buildings, such concretes are not used. The main areas of their application are the creation of protective structures on nuclear power plants, in bunkers for the storage of radioactive waste and other similar structures.

The weight of a cubic meter of such concrete is from 2500 to 3000 kg, most of which falls precisely on large aggregates.

How to calculate the mass of a cubic meter of concrete

All of the above parameters are regulated by the standards of SNiP No. II-3, established back in 1979. This document contains more than exact values for concretes using specific aggregates (all values ​​in kg/m3):

• reinforced concrete structures - 2500;
• crushed stone, gravel - 2400;
• tuff - from 1200 to 1600;
• pumice and other fractions of volcanic origin - from 800 to 1600;
• expanded clay - from 500 to 1800;
• foam and aerated concrete - from 300 to 1000.

It is possible to determine the mass of a cubic meter of finished concrete based on its brand. The values ​​of the specific gravity of concrete in kg / cubic meter are given below:

Table "Specific gravity of concrete (1m3) of various grades"

If you need data specifically for your concrete, and not average indicators, you can make the calculations yourself. To do this, you need to know the content and brand of each component of the mixture.

Let's give an example

It is necessary to prepare a cube of concrete grade M200 from cement M400 at the following indicators:

• crushed stone fraction - 4 cm;
• water-cement ratio - 0.57;
• sand density - 2.63 g/cm3;
• cement density - 3.1 g/cm3;
• crushed stone density - 3.6 kg/l

Cement for the preparation of a portion of such concrete will require 325 kg. This parameter is calculated using the tables given in SNiP by dividing the volume of water required to prepare the solution desired brand, on the water-cement ratio.

Next, we calculate the total volume of sand and gravel. To do this, subtract the sum of the volumes of cement and water from the total volume (1 cubic meter or 1000 liters). The volume of water is indicated in the table - 185 liters, the volume of cement is obtained from the school formula by dividing its mass by density. Total we get 1000 - (185 + 325 / 3.1) = 710 liters.

Knowing the percentage of sand and gravel in the mixture (also presented in the tables), we calculate the volume of each of these components separately. It is not difficult to determine the volume of a part of the whole: multiply the total volume by the percentage of the component and divide the resulting value by one hundred. Total at percentage sand to crushed stone in our mixture equal to 41:59 we get: 710 × 0.41 / 100 \u003d 290 liters of sand and, accordingly, 420 liters of crushed stone.

Knowing the volume and density of the components, multiplying them by each other, we get the weight of sand in kilograms 763, crushed stone - 1092 kg. If we add the mass of cement (325 kg) and water (185 kg), we get the mass of a cubic meter of concrete - 2362 kg / cubic meter. As you can see, the value is close to the tabular one (2430 kg / cubic meter).

There is an even more simplified way of calculating. To obtain concrete grade M200, the strength of which is quite sufficient to withstand the load of a private house, the volume ratio of cement, sand and crushed stone should be 1:3:5. If we add up all these parts (1 + 3 + 5), we get a total of 9 volumetric parts.

Knowing that one cubic meter is 1000 liters, we get one volumetric part equal to 1000/9 \u003d 111 liters or 0.111 cubic meters. Then the mass of cement in the mixture will be 0.111 cubic meters x3100 kg / cubic meter = 344 kg. The masses of the remaining components can be calculated in the same way as the mass of cement, or use the first method. The water-cement ratio in this case can be taken equal to 0.5. The values ​​will be close, but not the same.

For private construction, as already mentioned above, this method of calculation is quite acceptable. In other cases, use the values ​​\u200b\u200bgiven in SNiP. If you are unsure that you can make all the calculations yourself, then it would be wiser to use ready-mixed concrete purchased at the reinforced concrete factory.