Sand consumption per m3 of solution. Normative consumption of cement and sand per cube of mortar. Components used in the preparation of cement mortar

The table shows the main grades of the solution and the consumption of raw materials

Cement-sand mixture is widely used in the field of construction. It is used for brickwork, leveling the floor by arranging the screed, as well as for plastering. The components will be the same. Only the consumption of cement and sand per 1 m3 of mortar differs. At first glance, it may seem that everything is quite simple here - you should use a ratio of 1:3 or 1:4 - depending on the requirements for the strength of the composition. But what proportion and in what cases to apply?

Basic moments

Before proceeding with detailed calculations, the main factors affecting the consumption of cement and sand should be considered. There are several of them:

Interesting! Qualified builders claim that to obtain a cubic meter of mortar, it is necessary to use a cube of sand. Cement and water will simply fill the space between the grains of sand.

In most cases, the composition is prepared according to the principle identical to the previous version. But professionals additionally use plasticizers that improve the performance properties of the mixture, as well as polypropylene fiber. Such components will allow you to get a high-quality coating that can last for more than a dozen years.

In the preparation of the solution, the hardener of the brand M150, M200, M300, M400 becomes the best option. The consumption of cement and sand per screed is represented by a ratio of 1:3. Simply put, for 50 kg of the latter, 15-16 kg of hardener are taken.

Important! Much attention should be paid to the consistency of the resulting composition. It should be like thick sour cream, spread a little on flat surface. If there is too much water, the mixture turned out to be very liquid - its performance will decrease, the screed will be defective.

Surface plastering

Plastering the base when performing external finishing works requires the use of a component of no less quality than a screed. The best option will be cement grades M300 and M400. For one part of it, 3 parts of sand should be taken. To prepare a cement-lime mortar, you will need one part of Portland cement M400 or M500, ½ lime paste, 2 volumes of washed sand. This optimal norms consumption of cement and sand for plaster.

In concrete, cement is the composition that binds all of its components. The technical characteristics of the solution depend on its quantity and quality - strength, frost resistance, water resistance, corrosion resistance. As part of the mixture, the price for it is the highest, so the issue of cement consumption per 1 cubic meter of concrete is acute - too much, the profitability of construction will decrease, cracks appear after hardening, a little - the required technical and operational characteristics will not be achieved.

The main requirement for concrete is to achieve the required strength after hardening. Based on this, in accordance with building standards describing the quality of the components, their ratio and technical characteristics are selected. This is done taking into account the strength grade of the composition, the recommended ratio of ingredients is indicated in specialized reference books. To calculate how much cement will be contained in 1 m³ of concrete, the following factors are taken into account:

• brand, density, required time setting;
• plasticity of the solution and its mobility;
• type of sand, fraction, the presence of impurities, the proportion of which does not exceed 15%, otherwise this filler is subjected to pre-treatment - sifting or washing;
• fraction, type and other technical characteristics of crushed stone - flakiness, density, pollution, if it exceeds the norm, crushed stone is cleaned;
• Availability additional components improving characteristics - hardeners or plasticizers.

In the manufacture is taken into account directly. It should be twice the brand of the composition made from it - for the M200 solution, the M400 composition is taken. The higher the brand, the less it will be required to prepare a mixture of the desired class.

Proportioning

To calculate the amount of cement used per cube of concrete, you need to know the brand of the mixture, in addition, the brand of the binder used is also taken into account. The proportional ratio of the components is indicated in special tables. In construction, M400-M500 are more often used, and the proportion is drawn up in mass parts.

This means that for the preparation of M300 concrete from M400 cement, you will need to take 10 kg of cement, 19 kg of sand, 37 kg of crushed stone. The result is 66 kg of finished material. The average density of the mixture is 2200 kg/m³, so the mass of the binder used is 2200/66*10≈330 kg. Such calculations have already been summarized in special tables to facilitate the work of designers and builders.

When calculating the amount of solution, it is taken into account that the volume output is less than the total volume of all components due to compaction during stirring. The most popular crushed stone fraction is 20 mm, it provides the necessary strength and is affordable. The amount of added water required to prepare 1 cube of the mixture is determined during the manufacturing process, since it depends on the moisture content of the sand used and technical parameters mixtures.

How much cement is needed for 1 cube of concrete mix?

If in order to obtain the necessary specifications you need to know the proportions of sand and crushed stone, then in order to calculate the construction costs, you need to calculate the cost of cement per 1 cubic meter of concrete. These data are calculated and summarized in tables.

This will help determine the consumption rate, as well as the amount after calculating the total volume of material needed for construction. The quantity and cost of fillers are calculated using tables with their proportions for different brands. Similar reference data have been developed for the M500, if necessary, this indicator is calculated using the figures for the proportions of the components for preparing the mixture.

To deliver the required amount of water, it is taken into account that it depends on the moisture absorption of sand and other components, but on average it is recommended to store up to 200 liters per 1 m³ of concrete. Water should be clean, without salts and organic additives that can reduce the quality even with full compliance with all proportions.

Problems often arise in the preparation of solutions. A cement of a lower grade than is required for the manufacture of a composition of a certain strength class is brought to the site. To reach desired effect, its amount is increased by 15%. Fine-grained sand is added 10% more and this will not affect the quality.

Most often, cement is offered in paper bags of 50 kg. This is a convenient container that allows you to quickly calculate its volume for the planned work. For this, it is calculated how many bags of cement are contained in 1 cube of concrete. To obtain this volume of M300, 329/50 = 6.58 bags or 6 bags and 29 kg will be required. This value is multiplied by the volume of solution that is poured. If you need to make a monolith of 40 m³ from M300, then you will need 40 6.58 \u003d 263.2 ≈ 264 bags or 13.2 tons. At the same time, the quality of the mixture will correspond to the declared parameters, subject to the manufacturing technology.

Correctly calculated amount of cement in a cubic meter of the mixture will achieve the desired technical and performance characteristics. Do not forget about the quality of fillers and water. They must comply with the declared parameters, do not contain foreign inclusions and impurities. This will help to pre-calculate the financial component and optimize construction costs. When buying, it is better to stop at quality brands of 400 or 500, since you will need fewer of them at a similar price.

In order to prepare concrete, three components are needed: cement, sand and crushed stone. Compliance with the proportions of the main components affects the quality of the finished product. Let us consider in more detail what is the consumption of cement per 1 cubic meter of mortar.

How much cement is needed per cube of concrete

Depending on the purpose of concrete, it is made with a certain strength. For example, the M100 brand is used for pouring the foundation of roads and creating curbs, M150 for the construction of small buildings, M200 for pouring foundations.

If there is too little cement in the concrete, it is not able to hold the binder and filler, and such a material will quickly collapse under the influence of external factors. Conversely, a significant excess of hardener volumes will lead to cracking of the final product.

How many bags of cement are needed for 1 cube of concrete

Building materials are best purchased in bags packaged in 50 kg - it is easier to calculate the proportions of the components. For example, for the manufacture of a concrete mix for a foundation, the recommended ratio of cement, sand, crushed stone and water is 1:3:5:0.5 . This means that for 1 bucket of cement you need to take 3 buckets of sand, 5 buckets of crushed stone (gravel) and half a bucket of water.

To calculate the cement consumption per 1 m2 of screed, use the calculator. To begin with, you need to calculate required volume solution: multiply the thickness by the surface area. So, for the manufacture of a screed with a thickness of 30 mm for a room of 15 m2, you will need: 15x0.03 = 0.45 m3 of concrete.

If the floor is initially curved, the average value should be taken as the height. For example, to calculate the consumption of concrete mortar for a screed, which will have a thickness of 1 cm in one corner and 5 cm in the other, an estimated thickness of 3 cm should be taken.

The consumption of cement per 1 m2 of brick laying is also calculated based on the required amount of ready-made mortar. Approximate consumption of cement masonry mixture for brickwork is calculated for a cubic meter of future masonry. The volume of masonry is easy to calculate, knowing its area and thickness in bricks.

Approximate consumption can be found in the table:

Cement is a building material with a wide range of applications. It can be used in foundation pouring, production building materials and dry mixes. But when choosing this product, it is very important to know its consumption. It’s not so easy to determine it, because this parameter is influenced by various factors, which will be discussed later.

Required amount

Concrete is the most demanded material from all the range that is used in construction. It is based on crushed stone, and an aqueous solution of cement and sand acts as a binder. To calculate the required amount of concrete per m3, you should know for what purposes it will be used. On average, the consumption per 1 m3 of concrete will be 240-320 kg. This greatly simplifies the calculation if the area is large. But here it all depends on the brand of concrete.

If you want to get a high quality material that can serve you for a long time, then you must strictly adhere to the established proportion during the preparation of the composition. The amount of cement used has an effect on the flowability of the concrete. For this reason, during the preparation of concrete, it is necessary to observe the accuracy of laying the ingredients as follows:

• cement - up to 1 kg;
• sand - up to 3 kg;
• crushed stone - up to 5 kg.

If all these proportions are met, then you will get a high-quality product that will have high strength, rigidity and ductility.

On the video - the consumption of cement per 1 cubic meter of mortar:

If a large error is allowed, for example, towards a decrease in volume, then the binder component will not be able to retain the filler, as a result of which the concrete, under the influence of external negative factors, will become unusable in a very short period of time.

Consumption for pouring 1m3 of material also depends on what brand of concrete mix you will receive. And it depends on the purpose for which the concrete will be used. In the field of domestic low-rise construction, the following grades of concrete are most often used:

The grade used in the production of the material should always be 2 times the grade of the resulting concrete.

The required amount of binder per 1 m3 of concrete is a reference data that can be found in the following table.

Table 1 - Consumption for obtaining various grades of concrete

To make the cooking process more convenient, you need to buy cement in bags of 50 kg. With this solution, it will be possible to easily obtain measurements concrete mix. For example, to get 1 m3 of the most common M200 concrete, you need to take 4 bags and 41 kg of M300 or M400 cement.

Quantity per brick laying

The quality of the masonry is determined not only by the characteristics of the brick, but also by the mixture used. You can prepare such a composition according to various recipes, we will consider only the most popular:

1. Based on sand and cement. Such a product is characterized by high strength indicators, however, when cooking, it is very important to strictly observe the proportions. Even if you deviate a little from the proportions, then on brickwork cracks are formed.
2. Lime mortar. The resulting solution is characterized by high plasticity, however, it is unacceptable to use it for outdoor masonry, since it is simply washed out by rain.
3. Mixed type of solution, which involves the use of both cement and lime. Thanks to this combination, it is possible to obtain a durable and plastic composition.
4. Cement-based mortar with the addition of plasticizers. Thanks to the introduction of additional components, it becomes possible to improve the quality of the solution, give it strength, plasticity, and most importantly, it is very easy to apply.

If you are going to finish the facade, then you can use various colored pigments in the solution. Then the seams and the masonry itself will have a spectacular look.

In the manufacture of mortar for laying bricks, the same requirements are always presented: mix thoroughly so that the mixture does not contain lumps. As a result, you should get a solution of a homogeneous structure. To achieve this effect, you must first mix the dry ingredients, and then add the liquid. Prepare the mixture in in large numbers not worth it, because under the influence of air it begins to quickly set.

For masonry bearing walls it is necessary to use cement, the brand of which is higher than in the construction of self-supporting structures. The proportions are determined taking into account which brand of cement is used. Let's take a look at this with an example:

1. For the binder M500, it is worth using the proportion in which cement relates to sand, as 1: 4.
2. For the M300, a ratio of 1:2.5 is applicable.
3. For M400 - 1: 3.

Of course, you can not waste your time preparing the solution, but go to the store where all these products are presented in ready-made. In this case, information about the consumption will be present on the package.

During self-preparation of the mixture, it is necessary to use cement, the hardness grade of which is 2 times higher than the hardness grade of the resulting product. If you need to get a mixture of grade M100, then the cement must be grade M200 and higher.

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 sand by 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 medium density solutions are divided into light and heavy. TO light solutions relate mortars bulk weight 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. The largest volumetric weight of the aggregate and, as a result, the solution will be if a certain ratio is observed between the number of grains of different sizes. 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