Weight of 1 m3 of concrete m300 on gravel. Types of concrete by specific gravity

The weight of concrete directly depends on the aggregates used. By specific weight, concrete is usually divided into four types: extra light, light, heavy and extra heavy concrete.

• Particularly lightweight concrete- cellular concrete with big amount(up to 85% of the total volume of concrete) small and medium air cells up to 1-1.5 mm in size. A cube of extra-lightweight concrete weighs less than 500 kg. Particularly lightweight concretes are usually used as thermal insulation.

• Lightweight concrete- concrete compositions filled with lightweight porous aggregates, such as expanded clay or without aggregates, but having a porous structure, such as foam concrete or aerated concrete. A cube (cubic meter) of lightweight concrete weighs from 500 to 1800 kg. A cubic meter of concrete includes about 600 kg of sand - the main and indispensable component. Lightweight concretes are usually used as prefabricated building blocks.

• heavy concrete- part concrete mixtures includes heavy and coarse aggregate, such as crushed stone or gravel. A cube (cubic meter) of heavy concrete weighs from 1800 to 2500 kg. The bulk of the concrete is: crushed stone or gravel - 1150-1300 kg, sand - 600-750 kg, cement - 250-450 kg, water - 150-200 liters. Heavy types concretes are classical and have a very wide range of applications.

• Extra heavy concrete- the composition of concrete mixtures includes: magnetite, barite, hematite, different kinds scrap metal. The weight of a cubic meter of extra heavy concrete is 2500-3000 kg. The bulk of concrete is coarse aggregate. Particularly heavy concretes are used to protect personnel on nuclear power plants from radioactive radiation.

This construction material used everywhere and is considered truly universal. It is used for the construction of foundations and floor slabs, screeds and a plaster layer. But depending on the specifics of the work, it is often necessary to make certain calculations, and for this you need to know the weight of 1 m 3 of concrete.

This value is not constant, since this material is divided into several types. Their differences are not only in the proportions of "ingredients", but also in the structure. But they are distinguished, first of all, by specific gravity.

Particularly heavy

1 "cube" weighs in the range of 2.5 - 3 tons. This figure depends mainly on the type of aggregate. As such, there can be barite, hematite, metal scrap, magnesite and some others. Considering how much a cube of concrete weighs, it is clear that it is used infrequently, mainly in special construction (underground storage facilities, tunnels, etc.).

heavy

Traditionally used not only in civil and industrial construction, but also in the private sector. Due to its strength, various types of foundations, floor and interfloor slabs, other load-bearing structural elements. Gravel and crushed stone of large fractions are used as bookmarks. The weight of 1 m 3 lies in the range from 1.8 to 2.5 tons.

Lungs

Aggregates are either lightweight fractions (expanded clay, shell rock, tuff), or they are not used at all. The porosity of the structure is achieved artificially (cellular types - gas and foam concrete). The weight of 1 "cube" is in the range of 0.5 - 1.8 tons. This material is suitable for both partitions and other unloaded parts of the building. Often and in low-rise construction for walls.

The total weight is directly dependent on the components. In particular, sand can be either fine, sifted, or large river sand. Therefore, it is correct to focus on the specific gravity of all ingredients.

The size of the fractions of the solid components is also taken into account. It is clear that the smaller they are, the more densely they will fill the volume. But the use of large fractions involves the formation of voids, and the larger their size, the lighter the concrete will be in the end. In addition, the various fillers used, which are introduced into the composition to improve certain properties of the final product, and the amount of added water also have an impact. By the way, the quality of mixing the composition can also change the total weight somewhat. It also depends on whether the sand was originally wet or dry.

Knowing the proportion in which the various components are taken and their specific weight characteristics, it is easy to calculate the weight of 1 m 3. At the same time, an exact result will not work, since it is impossible to measure all the components with “pharmaceutical” accuracy.

If for calculations it is required to know the specific gravity of one m 3 of concrete, then experts advise focusing on the indicator of 2,500 kg / m 3. This value is valid for almost any design and appears in many reporting documents.

You can give some more data on the specific gravity of common concretes (in kg / m 3):

• with coarse gravel - 2,400;
• with volcanic aggregates - from 800 to 1,600;
• gas, foam concrete - from 300 to 1,000.

More extensive data is available in special tables, but they are used mainly by professionals.

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 by 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. This type we will analyze it 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 detailed look at the table example, how the requirements for cement change and how the amount changes necessary materials for different brand:

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.

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

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, as a rule, is 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- This is a structural mortar made on the basis of 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).

Starting the construction of a house, or making repairs, sometimes you have to deal with questions that seem to be simple at first glance, but you can’t give an answer to them right away. It seems awkward to address such a question to specialists, but you need to know for sure. For those who can access the Internet, it’s easier - I typed in the search engine “How much does a cube of wood weigh” and in half a minute I got an exhaustive result. And by the way, really, how much?

Influence of humidity on wood weight

The weight of wood does not always have the same indicator. What does it depend on? First of all, from the moisture of the tree. If we compare, for example, oak and birch, it turns out that a cubic meter of oak weighs 700 kg, and birch weighs 600 kg. But it may be otherwise. Weighing a cubic meter of birch, we get 900 kg, and oak will show the same 700. Or in both cases it will be 700 kg. Why are there such different numbers? In this case, the moisture content of the wood plays a role.

There are four degrees of humidity: dry (10-18%), air-dry (19-23%), damp (24-45%) and wet (above 45%). Thus, it turns out that different breeds at the same humidity different weight, as in the first example above. If the humidity is not the same, then the weight can fluctuate in one direction or another. The standard humidity is 12%.

Different density - different weight

Another factor that affects the weight of wood is its density. The most high density for iron and ebony - from 1100 to 1330 kg / m 3. Boxwood and bog oak are close to them - 950-1100. In ordinary oak, beech, acacia, pear, hornbeam, the density is about 700 kg / m 3. It is even lower in pine, alder, bamboo - 500 kg / m 3. And the lowest is at the cork tree, only 140 kg / m 3.

Why do you need to know the weight of a cubic meter of wood

Having knowledge in this area is sometimes very important. When purchasing a building material, its quantity cannot be determined by a non-specialist by eye. Knowing the dimensions of the timber or lining, the material from which they are made and its moisture content, simple calculations allow us to determine the weight of the purchased goods. How much does a cube of wood weigh - in this case, the answer to this question will help you figure out whether the seller released the goods to you correctly.

Heat dissipation of wood

In addition, there is another indicator - heat transfer. She will come to the aid of those who use wood as firewood for heating. The higher the hardness, i.e. the density of the wood species, the higher its calorific value. Of course, no one will heat the room with boxwood, but choosing between linden and pine or birch and acacia, you can get much more heat if you know which of these rocks are the hardest. Information about the density of each tree can be gleaned from the tables, since all this information is systematized for ease of use.

Weight of dense cubic meter, kg

The table shows the average weight values. Possible maximum and minimum value masses are respectively 1.3 and 0.7 of its average value