Types of glue and mixtures for laying expanded clay concrete blocks, rules of application and calculation of consumption

One of the most important construction tasks is laying expanded clay concrete blocks, which calls for the proper adhesives and mixtures. With the help of these materials, the blocks will remain securely in place, giving your building project the necessary structural integrity. There are numerous varieties of glue and mortar mixtures available, each with special uses and advantages of their own.

It is crucial to take into account various factors such as the type of construction, the surrounding conditions, and the particular requirements of your project when selecting the right adhesive. Polyurethane foam, specialty construction glues, and cement-based adhesives are a few popular choices. Every variety has benefits and is appropriate for certain phases of the construction process.

These adhesives must be applied carefully, paying close attention to every detail. A solid bond and a long-lasting structure can only be achieved with the use of the right application methods, mixing ratios, and surface preparation. It’s important to use adhesive exactly right because using too little or too much can cause issues later on.

Estimating the amount of glue or mortar that will be used is a crucial part of planning. This entails taking the area to be covered, the adhesive layer’s thickness, and the block sizes into account. Precise computations aid in acquiring the appropriate amount of supplies, reducing wastage, and guaranteeing a financially viable undertaking.

You can guarantee the strength and dependability of your expanded clay concrete block construction by being aware of the different types of adhesives and how to apply them correctly. By using the appropriate method, you can create a long-lasting, well-built structure that endures over time.

What adhesive composition are used to lay expanded clay stones??

Three different composition types are used for the laying of expanded clay concrete blocks:

1. universal;
2. heat-saving;
3. winter.

Before selecting one of these compositions, consider the unique qualities that each one possesses.

Classical

For laying expanded clay concrete and other porous blocks, traditional glue is utilized. It doesn’t have any parts that would give it unique characteristics.

During the warm season, this glue can be utilized for construction. It is affordable, easy to use, and does a good job of filling in chips, imperfections, and unevenness.

Producers:

• Osnovit Seloform.
• Ezhik.
• Masterblock De Luxe.
• Ytong for thin-joint masonry.

The primary drawback of traditional glue is its lack of additives that enable it to function at extremely low temperatures.

Winter

The ability to use winter glue during the colder months is its primary characteristic. It has ingredients that keep the mixture from freezing in below-freezing temperatures. In the cold, it does not lose its elasticity or deform.

Utilized in -10 degree weather.

Winter composition brands:

• Dauer Block. Contains an antifreeze additive up to -10 degrees.
• AeroStone. Winter adhesive for thin-seam masonry walls up to -10 degrees.
• Ytong winter.

By using winter adhesives, you can lay out the blocks neatly and evenly while preventing the creation of cold bridges. The majority of these compositions have the labels "moisture-resistant" in addition to "frost-resistant."

Winter composition has drawbacks, such as increased cost, so if the work is done during the warm season, there’s no reason to purchase it.

Heat saving

Using heat-saving glue helps prevent "cold bridges" from forming. Consequently, the temperature of the room is consistently kept comfortable. When laying blocks with traditional mortars, cracks may occur, but heated air does not seep through them.

Producers:

• Thermal insulating masonry mixture Promix with a reduced thermal conductivity coefficient.
• Masonry thermal insulation adhesive Perfekta Linker Thermo Profit.
• Adhesive for cellular concrete Stone Flower Magma.

The use of heat-saving glue has no drawbacks. The sole disadvantage is that it is more expensive than the traditional composition.

What is included in the composition of the material?

The following ingredients are present in the expanded clay concrete block glue composition:

1. Portland cement. It acts as the main binder.
2. Sand. For the production of high-quality glue, fractional sand that has undergone purification is used. It is necessary to impart plasticity to the mass. When temperatures change, it is sand that prevents the wall from cracking.
3. Polymers. They are needed to fill in chips and irregularities on the blocks. Thanks to polymers, the adhesion of the glue to the surface increases.
4. Modifiers. They prevent the formation of cracks in the adhesive base, do not allow heat to leave the room.

The packaging needs to list every ingredient that is included in the glue. If any of these details are missing, you ought to decline to purchase the product.

How to properly prepare?

The glue needs to be properly prepared in order for its adhesive properties to be fully displayed. The manufacturer’s instructions may vary, but substantial deviance from the standard algorithm is uncommon.

The steps are as follows:

1. Pour water into a suitable container in the amount needed to prepare the adhesive mixture. The exact proportions are indicated on the packaging. The water must have the optimal temperature, which is indicated in the instructions.
2. Pour dry glue from a pack into water.
3. Mix the mixture until a uniform base is obtained. To ensure that there are no lumps left in the glue, it is recommended to use a construction mixer. As a result, the sticky mass should resemble sour cream. When applied to blocks, it should not flow or spread.
4. Let the mixture brew. This will take about 10 minutes.

The composition shouldn’t be stored if it can’t be used in its entirety. The glue loses its properties when it hardens in the container; these properties do not come back when it is remoisturized.

Selecting the appropriate glue or mixture for expanding clay concrete block laying is essential to guarantee stability and longevity. This post will walk you through the various adhesives and mixtures that are available, including specialty block adhesives and mortars based on cement, outlining their advantages and ideal applications. Additionally, we’ll go over the fundamental guidelines for correct application, which guarantee a solid bond and structural integrity. Lastly, we’ll offer a straightforward technique for figuring out how much adhesive or mixture you’ll need for your project, which will help you plan ahead and save waste.

Flow calculation

The properties of the coating that the glue will be applied to as well as the worker’s experience level when laying must be considered in order to accurately calculate the glue consumption.

The following is the average consumption used to calculate the mixture:

1. For 1 m 2 blocks with a layer thickness of 1 mm, it takes from 1.3 to 1.7 kg of dry glue.
2. A standard bag of glue weighs 25 kg. This volume should be enough for blocks with an area of ​​1 m 3 .
3. To prevent the glue from running out at the most inopportune moment, you need to add another 10-15% of dry matter to the calculations obtained, since more glue will be consumed during the work. In some areas you will have to repair cracks and chips, in some places the technician may accidentally drop part of the adhesive mass, etc.

It is not a good idea to try to cut down on glue consumption by making the masonry thinner. This will have an impact on the building’s quality. You must dilute the excess dry matter in small amounts, just enough to last an hour of work, to avoid wasting it.

Features of work

Consider the following aspects of glue’s application when using it to lay expanded clay concrete blocks:

• Construction material must be clean. It is unacceptable for snow, dirt, sand, oils or other deposits to stick to it.
• Blocks with intact geometry can be used for gluing. If they have chips, cracks or unevenness, they refuse to lay such elements, since it will not be possible to achieve a strong adhesion.
• Before using the glue, you should carefully read the manufacturer"s instructions. The classic composition is diluted at a temperature of +10 degrees (unless otherwise indicated on the package).
• It is not recommended to dilute a large amount of glue in advance. The mixed mixture must be used completely.
• To prevent the glue from stagnating during operation, it must be stirred periodically.
• If the masonry is uneven, there is a shortage or excess of glue in some area, or other adjustments are required, they must be made immediately.
• Until the composition completely sets, the erected structure is covered with a tarpaulin. This rule is relevant when using frost-resistant glue.
• Regardless of the type of composition chosen, masonry should not be carried out in bad weather, during precipitation, with strong gusts of wind, or with sudden changes in temperature.

How long does it take to set and gain strength??

A good composition can’t dry out too soon. High speed is sometimes necessary for production, though. As a result, the process can take as little as 15-20 minutes to as long as 3–4 hours.

The glue might not be of high quality if it takes longer to set. Such a mixture will cause the blocks to shift, rendering masonry impossible.

Additionally, you must distinguish between the time needed for the glue to set and the time needed for it to become stronger. It may take one to three weeks.

Pros and cons of this material

Benefits of using adhesive when constructing walls out of concrete blocks made of expanded clay:

• No smell.
• Quick hardening.
• Economical consumption.
• Ease of use.
• High plasticity.
• Small seam thickness.
• Possibility of use for external and internal work.
• Resistance to mechanical impact.
• Increased adhesion to the surface.
• Possibility of use in winter (when purchasing a special composition).
• Preservation of heat inside the room.

Use of adhesive solution drawbacks:

• Need for strict adherence to safety precautions. The composition of the product includes chemical components that, if they come into contact with the eyes or skin, lead to severe irritation.
• Higher cost of glue, in comparison with classic cement mortars.
• No possibility of reuse.

Average prices

The manufacturer and composition type have an impact on the cost of the glue for expanded clay concrete blocks.

The most affordable option is a universal mixture, which costs 180 rubles for a 25 kg package.

The cost of winter glue is higher. A premium mixture from a reputable manufacturer starts at 250 rubles in price. Each package of heat-saving glue costs roughly 280 rubles.

What other masonry mixtures can be used?

If the blocks are severely damaged and uneven, cement mortar can be used in place of glue. It is used to attach cheap blocks together and is an inexpensive substitute for adhesive compositions.

Cement joints can be as wide as 5 cm if the glue layer is between one and two centimeters thick when the blocks are laid. Walls built using this method, however, are dependable and long-lasting. The primary drawback is the low rate of heat conservation due to the development of cold bridges. Thus, finishing will require extra care and attention.

From an economic perspective, it might appear that using homemade cement mortars is more advantageous. Nevertheless, compared to glue, it consumes a lot more and requires more time to lay.

Type of Glue or Mixture	Rules of Application and Consumption Calculation
Cement-Based Adhesive	Mix with water until smooth. Apply a thin layer using a notched trowel. Coverage: about 5 kg per square meter.
Polyurethane Foam Adhesive	Shake the can, apply directly in beads. Quick setting. Coverage: approximately 1 can for 10 square meters.
Mortar Mixture	Mix sand, cement, and water. Apply with a trowel. Coverage: around 8-10 kg per square meter.
Ready-Mix Adhesive	Open the bucket and use directly. Apply with a notched trowel. Coverage: roughly 4-6 kg per square meter.

A sturdy and long-lasting structure depends on the glue or mixture used when laying expanded clay concrete blocks. A variety of adhesives, including specialized block adhesives, polyurethane foam, and mortars based on cement, each have advantages and useful uses. Knowing these choices enables you to choose the most stable and long-lasting material for your particular project.

Selecting the correct adhesive and applying it correctly are equally important. It is essential that the adhesive mixture and the blocks be properly prepared. Adhere strictly to the manufacturer’s instructions, taking note of variables that may affect the adhesive’s performance, such as humidity and temperature. Even and consistent application guarantees a strong bond and guards against future problems like shifting or cracking.

Precise estimation of adhesive consumption facilitates project planning and budgeting. This entails calculating the area that needs to be covered and taking the adhesive layer’s thickness into account. An accurate estimate can be obtained by using online calculators or speaking with an expert, which will help you prevent waste or shortages. This meticulous planning results in a better end product and a more seamless construction process.

In conclusion, handling expanded clay concrete blocks requires an awareness of the different kinds of glue and mixtures, how to apply them correctly, and how to figure out how much of each is needed. These recommendations will help you build a dependable and effective structure that will last for many years.

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