All about plasticizers for concrete

All about plasticizers for concrete

With the development of technologies used in modern construction, more and more people seek to learn about plasticizers for concrete. First of all, it is worth recalling that this material is a mixture, which includes cement, sand, crushed stone and water. At the same time, the main task of developers was the creation of additives that are capable of making a concrete solution plastic.

Their use allows you to significantly improve the operational properties of concrete.

All about plasticizers for concrete

Peculiarities

The value of plasticizers for concrete is difficult to overestimate. They allow you to minimize the negative impact of external factors per solution, and also significantly increase its quality. The use of liquid additives, including for the production of sandbetone, facilitates the performance of work. This, in particular, is about laying ready-made mixtures to formwork.

Taking into account the principle of operation, plasticizers are divided into hydrophilic and hydrophobic. The first variety is characterized by high wettability. The second type is designed to maximize the saturation of the concrete mix by air. In modern construction, plasticizers as additives have long become a mandatory component of most solutions.

All about plasticizers for concrete

All about plasticizers for concrete

This approach is fully explained by some explicit advantages.

  1. First of all, we are talking about the maximum increase in the plasticity of the final product. This, in turn, many times easily simplifies the use of concrete and solutions, as they shed even in the most hard-to-reach places when creating increased strength structures.
  2. The second dignity of modern plasticizers is a significant reduction in building material consumption. Thanks to the use of similar effective additives, it is possible to save. To check it is to compare the consumption of cement in the manufacture of concrete with additives and without that. It is important that in the first case, the amount of cement used will be less than almost 17 percent.
  3. Plasticizers contribute to improving concrete strength on average by 25 percent.
  4. The use of described additives, due to which the solution becomes more fluid and elastic, allows you to use specialized installations when pouring. Similar equipment, the basis of which are concrete pumps, is widely used, for example, in the process of structures of monolithic structures.
  5. The flowing mixture characterized by improved adhesion is indispensable if necessary, pour reinforced elements of future structures.
  6. The presence of high-quality plasticizers of different types allows multiple times to increase the density level of the concrete solution. It is also important to take into account that the designs made of similar materials differ from the analogues with the maximum waterproofability.
  7. Due to the minimum presence of moisture in solutions with plasticizers, frost-resistant structures are created. We are also talking about minimizing education risks with crack time.

All about plasticizers for concrete

All about plasticizers for concrete

It is important to remember that the use of the additives under consideration significantly increases the time of pouring concrete. In some situations, this can be a significant problem.

The output, as a rule, is adding to a mixture of special additives that perform the functions of the reaction accelerators.

All about plasticizers for concrete

All about plasticizers for concrete

Views

Modern additives that increase the plasticity of the building mixture, taking into account their composition, are divided into organic and inorganic. If we take into account the class of their destination, then two categories can be distinguished.

  1. Montendudes that are solutions with a narrow-controlled effect. It should be borne in mind that for them are often characterized by side, negative effects.
  2. Complex additives that combine several single-component solutions that effectively neutralize all negative effects on the concrete mixture. This in turn contributes to the essential expansion of the scope of application.

Also submitted at the moment in the market plasticizers can be divided into several groups:

  • compounds of surfactant components having a hydrophilic-hydrophobic effect;
  • mixtures of electrolytes and surfactants, efficiently accelerating the process of frost;
  • Superplasticizers with enhanced airflower effect;
  • Adaps of enhanced action used in the manufacture of concrete for styling under the conditions of an aggressive environment.

It is important to consider that the described mixtures can be made in the form of suspension, liquid, paste, as well as crystalline powder.

All about plasticizers for concrete

All about plasticizers for concrete

All about plasticizers for concrete

Watering

This category of additives differs from other types primarily providing the possibility of substantial water saving when preparing a concrete mix. Speech, by the way, is about reducing consumption by 5-20 percent.

In addition, such plasticizers increase waterproof, strength and frost resistance of concrete.

All about plasticizers for concrete

All about plasticizers for concrete

Stabilizing

Representatives of this category have a unique ability to preserve the mobility of solutions. It also concerns their homogeneity. Such properties are most relevant with long-term transportation of concrete mixes, pumping them and directly laying.

In parallel, their bundle is prevented.

All about plasticizers for concrete

All about plasticizers for concrete

Accelerators hardening

These additives effectively reduce the duration of the hardening of concrete (up to 25%). It is important to take into account that During the first day, the solution is gaining 20% ​​more strength compared to the brand. Such additives are usually applied in production to accelerate the molding of the Rube, as well as in construction when building structures under negative temperatures.

All about plasticizers for concrete

All about plasticizers for concrete

Speeders

These components are relevant for large volumes of concreting. With their help, you can significantly reduce the number of joints called working seams.

Also, the extension of the setting intervals of concrete mixtures is required if long and frequent interruptions are made in the paper.

All about plasticizers for concrete

All about plasticizers for concrete

Hydrophobic

Representatives of this category contribute to the active involvement of air bubbles. Lastly dispersed throughout the mixture and parallel lower the surface tension of water present in it. As a result, the mobility and the plasticity of the concrete solution with an increased water-repellent surface increases.

All about plasticizers for concrete

All about plasticizers for concrete

Leading manufacturers and their products

At the moment, many companies are offered in the relevant segment of the market. Focus in such a variety help topical ratings of popularity of plasticizer brands. Taking into account the whole list of criteria, one can allocate explicit leaders of the industry.

  • “Roshimprom” – Group of Companies, founded almost 20 years ago in Rostov-on-Don and now specializing in the supply of raw materials for companies operating vibrating and vibropress installations.
  • Corporation “Tehnonikol”, being one of the leaders of the rating of international manufacturers of building materials.
  • Alligator – Enterprise, founded in the distant 1959. At the moment, the company specializes in the release of modern building mixtures and LKM. Products of this brand use well-deserved demand in many countries around the world.

Separate attention deserve plasticizers for concrete solutions “Optimist” C-3. We are talking about the popular and proven plasticizing additive. It is widely used in the production of monolithic, as well as precast concrete structures of various complexity.

Most often, this plasticizer acts as a component of lightweight, heavy and cellular concrete.

All about plasticizers for concrete

All about plasticizers for concrete

All about plasticizers for concrete

Scope of application

The use of modern plasticizers, including those added to the sand-concrete, provides a real opportunity to significantly reduce production costs. Naturally, Do not forget about improving the operational indicators of the described building mixtures. Modern manufacturers represent the market more than a wide range of additives that have different characteristics.

Nowadays, plasticizers are widely used both on large construction sites and enterprises producing concrete and in small housekeeping. Such additives are relevant when pouring foundations of any configuration, bases for flooring and a warm floor. By the way, often plasticizing additives are needed for plaster and other construction and finishing materials. What an additive is better to use, you can determine with the appointment of directly the concrete itself.

One of the determining scope of the application of plasticizers of moments is their ability to effectively reduce water concentration. This is the most relevant for the popular monolithic construction today.

Also additives are used to obtain frost-resistant structural elements.

All about plasticizers for concrete

All about plasticizers for concrete

Today, plasticizing additives are actively used when pouring:

  • tie floors;
  • blocks of different shapes and dimensions;
  • borders;
  • pillars;
  • plates;
  • columns;
  • Fontanov.

All listed products are characterized by maximum strength, waterproof and long service life.

All about plasticizers for concrete

All about plasticizers for concrete

Independent manufacture

Taking into account the value of the additives described, many try to reduce costs and replace them with cheaper analogues. This in this case is about making a plasticizer with your own hands. It is worth noting that when comparing proportions and instructions for cooking additives, concrete will receive all the necessary properties. Homemade mixtures are made using liquid soap, hair shampoo or washing powder dissolved in water.

by the way, Before the appearance of the first plasticizers and chemicals, operational indicators of solutions and concrete increased by the addition of egg proteins. This allowed to maximize the strength of mixtures.

The amount of plasticizer during its independent preparation is determined taking into account the solution in which it will be added.

All about plasticizers for concrete

All about plasticizers for concrete

So, when connecting one bag of cement with clay, it will take to add about 200 ml of soap solution. As a result, it will be possible to ensure resistance to frozen within 3 hours. It is important to remember that liquid soap is required to add to the initial stage of concrete work. Otherwise, the ceramzite is unevenly mixed, because of which concrete will lose its key properties.

With all the advantages, soap solutions have one important deficiency. This in this case is about the almost inevitable formation of foam when connecting all components. This is especially true if used concrete mixer. However, the problem is not critical because it is possible to start work immediately after the sedimentation of the foam.

Another way to prepare a fairly effective plasticizer is the use of hazed lime. This mixture makes any solution as maximum adhesive and at the same time elastic.

By the way, the addition of lime into a solution for brickwork significantly simplifies the whole process and contributes to the uniform distribution of the mixture.

All about plasticizers for concrete

All about plasticizers for concrete

Instructions for use

The use of plasticizers made both in industrial environments and independently is regulated by clear instructions. To avoid problems, it is necessary to consider the following important points:

  • The component is entered in the process of adding water, and it should be in a fully dissolved state;
  • should clearly control the dosage of 1 m3;
  • Homemade additives in dry and dissolved species are introduced at the rate of up to 150 and 250 g per bag of cement, respectively;
  • Preparation of the solution is desirable to be carried out under the conditions of a positive temperature;
  • It is necessary to monitor the maximum possible cleanliness of the total package;
  • Substances that have expired expired, it is not strongly applied to apply.

Now there are plasticizers in the form of:

  • powders;
  • concentrates (liquid);
  • ready to operate solutions.

All about plasticizers for concrete

All about plasticizers for concrete

From a financial point of view, the first option is more profitable. When diluting powders, it is necessary to observe the proportions that are specified on the package or in the instructions. This process includes certain stages.

  1. Heat the required clean water to a temperature ranging from 70 to 90 degrees.
  2. Add powder with constant stirring, which continues to its complete dissolution.
  3. Leave the solution to be for several hours at periodic stirring.
  4. Add additional connections if necessary.
  5. Mix the prepared mixture thoroughly before it is introduced into the water.
  6. Add ready-to-use plasticizing additive. The key point is that it must be administered exclusively into water for the solution, and not in the already ready concrete.

All about plasticizers for concrete

All about plasticizers for concrete

It is important to remember that the storage period of a dissolved plasticizer is significantly less than that of the powder product. It is also worth considering that the repeated introduction of the additive is not reflected on the dynamics of the durability. Calculation of consumption of additives is carried out using special tables compiled by manufacturers.

Special attention should be paid to the described additives. Safety technique should be given. This is most relevant when working with concentrates. In such cases, it is necessary to use rubber gloves, respirator and safety glasses. In case of drugs on the skin, they are required to quickly wash off with an abundant amount of preferably flowing water.

If we are talking about entering the mucous membranes, it should be immediately appreciated for medical care.

All about plasticizers for concrete

All about plasticizers for concrete

All about plasticizers for concrete

Comparison of the quality of concrete with a plasticizer and without it, you can see in the video below.

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