Concrete certification - mandatory or voluntary?

Concrete is one of the building mixtures, the quality of which determines the reliability of the erected structure, building or other construction projects. Often manufacturers, sellers and importers cannot understand the current legal requirements regarding the procedure for assessing the conformity of a given product and understand what exactly needs to be obtained - a declaration or a certificate for concrete?

Our center’s experts are ready to advise the client free of charge on all certification issues and assist in preparing the necessary documents for the goods for legal and successful business.

The legislative framework

When answering the question whether certification of concrete is mandatory, one must be guided by the current regulations of the Russian Federation. At the moment, in connection with the entry into force of the new edition of PP No. 982, free circulation of solutions, mixtures and thermal insulation materials for construction work is allowed only if there is a test report (TP) and a mandatory GOST R declaration.

The assessment procedure for concrete mixtures is carried out in accordance with the provisions of GOST 7473-2010, and for mortars in accordance with GOST 28013-98.

A declaration for a mortar or mixture documents the compliance of the declared characteristics of building materials with the established norms of profile standards. The validity period of a permit for mass production is 1-3 years. When declaring a single batch of product, no time restrictions are established. The basis for drawing up and registering a declaration in the National Part of the Unified Register of the FSA is a positive test report (PT).

How long does it take to obtain a permit?

The declaration procedure has less stringent requirements than certification. Candidates may provide their own laboratory records from exams they have previously taken. A prerequisite is that evidence must be submitted no later than one year before submitting the application. If there is no evidence, samples must be taken and appropriate tests carried out in our laboratory.

In most cases, registering a declaration takes 3-5 days (subject to approved protocols).

You can clarify the procedure and conditions for assessing concrete mixtures with Geosert employees during a free consultation.

Product Test Criteria

PI – evidentiary material of the applicant, compiled based on the results of laboratory examination of product samples. During the research process, the solution is checked for the following indicators:

• type of binder;
• type of filler (crushed stone, sand, lime and others);
• structure;
• curing conditions;
• volumetric mass (heavy, light, etc.);
• compressive and bending strength;
• waterproof;
• resistance to low temperatures and other values.

The declaration for mortar, drawn up in the GOST R system, is valid only in Russia. Products approved for circulation are marked with the RF-PCT mark.

For illegal labeling of goods and the absence of a permit for it, administrative liability is provided in the form of fines, confiscation of uncertified products or deprivation of a special right to entrepreneurial activity for a period of up to 3 months.

Important! For products used in the construction of highways, for example, asphalt concrete, you need to obtain a declaration of conformity in accordance with TR CU 014/2011.

Why is it better to order M200 concrete from our plant?

Discount on concrete up to – 200 rub. per cubic meter

READY-MADE CONCRETE (FILLER – GRAVEL/GRANITE CRUSHED STONE)

Call us or leave a request and our specialists will help you.

Concrete grade M200 - properties, characteristics and details of preparation

LLC "Concrete Control" invites its potential clients to familiarize themselves with the key properties of M200 grade concrete, which is capable of withstanding fairly large external loads. The manufactured products strictly comply with the regulatory requirements specified in GOST 7473-94, which ensures a high level of quality for each batch, regardless of its volume.

By ordering M-200 concrete from us, you don’t have to worry that the necessary products will not be available due to its particular popularity among private builders and professional teams. By organizing regular deliveries, you will not only receive a guarantee from the direct manufacturer, but you will also not have to worry about possible downtime, which has an extremely undesirable effect on the properties of the transported solution. Save your time and money with Concrete Control LLC, without worrying about possible difficult and unpredictable situations!

Properties of concrete M-200.

When selecting the optimal brand of mortar, we primarily focus on the class of concrete, or more precisely on its strength indicator – B15. One of the main advantages of this mixture is the excellent combination of price and quality. Despite the fact that the cost of M200 concrete is affordable for many private builders, this building material is highly valued by professionals working with foundation pouring, interior and exterior finishing.

The concrete M200 produced by our company can be safely called a universal mortar, with the help of which you can build a low residential building or any other low-rise building with a relatively small mass. When producing a concrete mixture, the following indicators are taken into account:

• Strength – 200 kg/m³. The compression level, considering the reasonable price, is quite acceptable. By the way, we would like to draw your attention to the fact that the degree of strength increases quite quickly during the pouring process. If necessary, our specialists can further strengthen this solution using special additives.
• Frost resistance belongs to class F 100. This indicator for concrete M200 is noticeably higher compared to more budget options, which allows the solution to be subjected to freeze-thaw cycles up to 100 times! In addition, it is possible to pour the mixture outdoors.
• The water resistance of the solution is W. Although in some cases it is possible to achieve higher values ​​by increasing the resistance of concrete to moisture to W6-W20.
• Workability is equal to class P3. This suggests that the solution is less mobile compared to other brands of building mixtures, but it can be made more plastic and pliable. For these purposes, our company uses so-called plasticizers, thanks to which it becomes easier to work with this type of concrete (by the way, this in no way affects the basic properties of the concrete solution).
• The density of M200 concrete can vary from 1600 kg/m3 to 2400 kg/m3. It all depends on what kind of filler (light or heavy crushed stone) and in what proportion will be used in the production of this solution.

When using the finished solution, it is important to remember that this brand of concrete is not diluted with water to achieve greater fluidity. This common mistake haunts many builders, so when purchasing building materials, we always warn our clients about such nuances. In addition, the mixture already contains up to 20% purified liquid, and this figure represents the permissible maximum. The hardening time of the poured surface depends on the operating conditions, but on average this period varies from 15 to 28 days. Again, depending on the components we use, the density and volumetric weight of M200 concrete can vary, ranging from 500 kg to 1800 kg per cubic meter. m.

Composition of concrete M-200 and its specific gravity.

From one brand of building mixture to another, the composition of the solution practically does not change. At the request of the client, we can add special substances to give the consistency improved properties that are as close as possible to the customer’s requirements.

To obtain high-quality concrete M200, our specialists use the following components (calculated per 1 cubic meter):

• Cement. When creating a concrete mixture, we use the optimal amount of binder in accordance with accepted standards. When choosing a building material, not only its quality level is taken into account, but also its brand.
• Sand. Used as a fine filler.
• Gravel. In the production of concrete M200, gravel is used significantly more compared to other components. Considering the fact that the solution we produce is not a very high-strength material, choosing gravel becomes the most appropriate solution.

You can mix the components yourself, either manually or using a concrete mixer. However, only in production conditions can all the necessary proportions be observed with high accuracy - the ratios are as follows:

1. The proportion for cement grade M400 is 1: 2.8: 4.8 (sand and crushed stone, respectively). 2. The proportion for cement grade M500 is 1: 3.5: 5.6.

If you want to reduce the cement content, remember that this decision will have an extremely negative impact on the performance properties of the produced mortar, and it will become “lean”.

Scope of application of M-200.

Due to its wide distribution in the construction industry, this type of mixture is used:

• In the manufacture of concrete screeds and floors. At the same time, the solution is quite durable in order to withstand power loads and environmental influences. Provided that it is properly filled, cracks do not form on the surface and the degree of its strength does not change over time.
• To create a solid foundation for low-rise buildings. This building material is excellent for erecting temporary buildings, as well as small-capacity country houses.
• In the production of reinforced concrete structures. Due to the fact that M200 concrete combines perfectly with metal products, it is possible to obtain truly high-quality reinforced concrete products that can withstand light weight. The ideal solution for creating retaining walls and stairs!
• During the construction of special sites and concrete structures, for the construction of which it is not necessary to purchase high-strength building materials.
• When creating road slabs. In this case, special attention should be paid to the wear resistance of the manufactured surface - our team of specialists knows perfectly well how to achieve the best result with the help of strengthening additives!

The minimum temperature at which it is allowed to work with the proposed solution is +50C. If you plan to use concrete at low temperatures, then it makes sense to tell the plant specialist about this when placing an order. All consumables used by our company are of a high level of quality and are purchased directly from trusted manufacturers.

Features of concrete M200

Depending on the area of ​​application of the concrete solution, our specialists are ready to produce for you several subtypes of products sold. We would like to draw your attention, dear client, to the fact that M200 concrete has the following features and characteristics:

• Depending on what kind of binder will be used in the production of concrete mortar, the latter can be cement, silicate, gypsum, etc. We often add reinforcing polymers to improve the composition.
• Depending on the size of the fillers used, M200 concrete can be fine-grained or coarse-grained.
• Due to the fact that our production base has its own laboratory and uses highly efficient equipment, the plant’s specialists can quickly achieve the desired consistency (it can be porous, dense or other).
• In terms of its volumetric mass, M200 concrete can be classified as either lightweight or heavy construction mixtures. It all depends on which components are used in making the mixture and in what proportion.

Why is it more profitable to buy M-200 concrete in Moscow from a direct manufacturer?

offers all its clients the most favorable conditions for the purchase of a concrete mixture of the declared brand - an individual approach, accurate calculation of cubic capacity, a flexible pricing policy and full compliance with established deadlines are guaranteed. With us, you don’t have to worry about possible downtime in production - everything will be done exactly on time!

An additional service indicated in the price list is the prompt delivery of manufactured goods to any district of Moscow and within the region. We make sure to take into account the fact that concrete mixtures should not be on the road for too long. Our specialists will calculate for you the shortest route possible, bypassing city traffic jams. Shipments take place around the clock and at any time convenient for you.

If you need to organize a stable supply of M200 concrete, then we are ready to completely take on this task, providing the most attractive price for the product and its transportation. Do you want to know right now about the benefits that cooperation with Concrete Control will provide? Call us and we will be happy to tell you about all the benefits!

Quality certificate for concrete

The quality certificate allows you to reflect in more detail the user characteristics of artificial stone material for the construction industry. It indicates all the actual numerical values ​​of the mixture, which helps resolve disputes between the manufacturer and the buyer regarding the quality of the product.

The technological document is drawn up not for the type of concrete, but for a specific batch. Obtaining it is a mandatory procedure for every production facility that produces mixtures and solutions for construction.

Your benefits

Not all manufacturers see the point in expensive product research to obtain a certificate that will only be valid for a relatively short time. And many do not draw up these documents voluntarily, which may be justified in certain conditions, when working with certain volumes and customers.

Despite the fact that examination is optional, practice shows that serious customers prefer to work with those they can trust and whose products meet high standards.

Voluntary concrete certification

This is an additional check of the quality characteristics of the building material. It is carried out at the initiative of the entrepreneur in the voluntary certification system - VTS, after receiving mandatory documentation.

A certificate of conformity for concrete allows producers to increase its competitiveness, highlight characteristics that are important to consumers, and confidently declare its quality.

The document is issued after checking the declared characteristics of the product for compliance with the criteria that the applicant independently selected.

In addition, the company can implement a quality management system within the framework of ISO standards and organize its independent assessment. This will make it possible to prove that the internal management processes of the enterprise fully satisfy international/national requirements.

Certificate of conformity for M350

Certification of concrete products is not mandatory, but significantly increases customer confidence in the manufacturer. It is possible to order and receive one of three types of certificates: sanitary, voluntary and quality. Certification is carried out by independent laboratories accredited at the state level by supervisory authorities. The examination confirms the compliance of the samples presented by the plant with the specified brand and belonging to a specific class of products. The conclusion is issued for a period of 1 year, after which the inspection is repeated if necessary.

When certifying M350 concrete, the following characteristics are determined:

• purpose and work for which the use of this brand is optimal;
• type of binder for the production of M350, as a rule, it is Portland cement PCM400/500;
• type and characteristics of filler: crushed granite or limestone with fractions of 30-50 mm;
• curing conditions and period: 28 days after pouring at positive temperatures;
• features of the structure of the M350 mixture, taking into account customer requirements.

In the certificate, the expert indicates the GOST to which this batch corresponds, the conditions of issue and the validity period of the document.

The procedure for declaring concrete mixtures

The procedure is divided into several successive stages:

• submitting an application to the Certification Center, agreeing on the terms of cooperation, signing an agreement for receiving services;
• provision of a set of documents and standard product samples for each nominal composition;
• conducting tests for compliance with the requirements of a number of state standards;
• preparation and issuance of PI;
• issuance of a completed and registered declaration to the applicant.

Concrete M200: main characteristics and composition

Heavy concrete is a sought-after building material, without which large-scale or small-scale construction is impossible. For the construction of buildings and structures, as well as for the production of reinforced concrete products, depending on the purpose and planned load, various grades of heavy concrete are used: M100, M150, M200, M250, M300 and others.

Heavy concrete M200 is characterized as a universal material, optimal for the following most common construction works:

• Heavy concrete M200 is widely used for the construction of strip, monolithic and block foundations for high-rise and low-rise buildings.
• Concrete grade M200 is the main grade in the production of reinforced concrete products for various purposes: floor slabs, window and other lintels, flights of stairs, rings of water supply and sewer wells, paving slabs and curbs, road surface slabs, load-bearing columns, etc.
• Floor screed, blind area, monolithic walls of buildings, sidewalks, garden paths and decorative elements: sculptures, flowerpots, flowerpots, bench bases, etc.

Set of documents

For the declaration process, the applicant must generate a set of necessary documentation. It includes:

• application in the established format;

• statutory documents;
• TIN, OGRN, OKPO;
• title forms for production areas - an extract of ownership or a lease agreement;
• NTD - TU or GOST;
• product description – characteristics, name, HS codes;
• supply contract, invoice (for import);
• other documents upon request.

You can clarify the details of cooperation and the nuances of obtaining permits for concrete and other products - deadlines, costs - by phone or using the feedback form on the website.

Consultations on any issues are provided free of charge!

Procedure for obtaining a certificate

The concrete certification process is maximally optimized, which saves customers time:

• the client submits an application containing information about the manufacturer/seller and a description of the product. The package also includes documents regulating the production of products (GOST or TU), statutory and constituent documentation, details of the organization, a certificate of registration with the Federal Tax Service, previously issued certificates, etc. Samples of products are also provided, the shape, size and number of which are regulated by state standards for test methods.
• a concrete certification scheme is selected;
• Laboratory tests are carried out in accordance with the requirements of GOST or TU.
• a test report is drawn up, in which all product data obtained during the testing of samples is entered;
• a decision is made to issue a document on product quality;
• a concrete certificate is issued.

The cost of concrete certification depends on the scope of work, the regulatory document for compliance with which the certificate will be issued, the type of product, and the need for testing. Contact our manager to order a preliminary calculation.

Consumption of components for preparing 1 m3 of concrete M200

Due to the short guaranteed shelf life of cement and the high cost of fillers, many developers will be interested in information on the consumption of cement, crushed stone and sand per 1 m3 of concrete. Using this information, developers, knowing the consumption of concrete in m3, have the opportunity to purchase the optimal amount of materials.

Proportions of concrete m200 in 10 l buckets

• To determine the proportion of concrete components in buckets, it is necessary to answer the question: How much cement per m200 cubic meter of concrete in kilograms? The requirements of the current regulatory document GOST 26633-2012 Heavy and fine-grained concrete (Table 1) determine the minimum amount of cement CEM I 32.5N PC for pouring reinforced structures - from 220 to 270 kg/m3. For calculations of “buckets” we take the average value of 220+270/2=245 kg/m3.
• The next step is to transfer 245 kg into “buckets”. Using the generally accepted density of cement - 1300 kg/m3, we determine how many kilograms of cement fit in 1 bucket with a volume of 10 liters (0.01 m3): 1300X0.01 = 13 kg of cement fit in a bucket with a volume of 10 liters.
• We translate 245 kg/m3 into a 10 liter bucket: 245/13=18.8 buckets of CEM I 32.5N PC cement will be required to prepare 1 m3 of M200 concrete.
• Amount of crushed stone (filler) in kg: 245x4.5=1102 kg. Using the tabulated density of crushed stone - 1400 kg/m3, we convert 1102 kg into 10 liters of bucket: 1102/(1400x0.01) = 78.7 buckets of granite crushed stone will be needed to prepare 1 m3 of M200 concrete. Note: this means the size of the M200 concrete aggregate is 20-40 mm.
• Amount of sand in kg: 245x3=735 kg. Using the tabulated density of sand - 1500 kg/i3, we convert 735 kg into a 10 liter bucket: 735/1500x0.01 = 49 video sand will be needed for 1 m3 of M200 concrete.
• Water. 18.8 (buckets of cement) x10x0.7=130 liters. Note: the calculated value of the amount of water is approximate and is adjusted when directly mixing the material.

If the developer is faced with the task of calculating the proportions of the components of M200 concrete in buckets of a larger volume (12 or 15 liters), it is enough to substitute in the above formulas instead of the number 0.01 (volume of a 10-liter bucket in cubic meters) the numbers 0.012 (12 liters) and 0.015 (15 l).