Laying aerated concrete: choosing an adhesive and calculating the amount, technology and step-by-step instructions

Aerated concrete provides superior insulation, long-term durability, and user-friendliness, making it a crucial component of contemporary construction. Aerated concrete blocks can greatly expedite the process of building a house, garage, or addition while maintaining strong structural integrity. This post will walk you through every step of the procedure, making sure you understand how to choose the best adhesive and figure out how much you’ll need for a finished build.

When working with aerated concrete, selecting the appropriate adhesive is essential. These bricks, in contrast to conventional bricks, need a unique adhesive to provide the best possible thermal insulation and a solid bond. We will examine the various adhesive kinds that are available and assist you in making an informed choice based on your unique requirements and the demands of the project. The longevity, energy efficiency, and strength of the construction are all impacted by the adhesive choice.

Working with aerated concrete requires precise material calculations, which is another important consideration. Accurately estimating the amount of adhesive and the number of blocks required can help you save time, money, and effort. We’ll give you a detailed explanation on how to determine these amounts, so you can be sure you have everything you need before beginning your project.

There are various steps involved in the actual laying of aerated concrete, and each one demands close attention to detail. Every stage of the building process, from leveling the ground to installing the first course of blocks, is crucial to the final product’s quality. We’ll guide you through the steps, providing helpful hints and methods to make sure your build goes smoothly. Even people who are not experienced in construction can use our detailed instructions to confidently take on projects involving aerated concrete.

You can improve your construction abilities and produce results that are both aesthetically pleasing and structurally sound by learning the nuances of working with aerated concrete. Whether you’re an experienced builder or a do-it-yourselfer, learning how to lay aerated concrete can lead to a plethora of opportunities for your next projects.

Choosing tools

These supplies are required in order to construct a building using aerated concrete blocks:

• tape measure;
• building level;
• construction mixer or drill with special attachments;
• rubber hammer;
• hand chaser;
• notched trowel;
• angle;
• hand saw;
• electric milling cutter;
• grater;
• container for mixing the solution.

Purchasing an adequate quantity of aerated concrete blocks and dry adhesive mixture, or supplies for making a cement-sand mortar, is a must before you begin construction. It is preferable to use a small reserve of masonry materials (10–15% above the calculated amount) along with aerated concrete blocks. It is also necessary to purchase reinforcement and rolled waterproofing material ahead of time, as these will be required during the construction process.

Preparing the solution

Blocks of aerated concrete can be installed using a specific adhesive mortar or a cement-sand mixture. The masonry mixture, no matter what kind it is, must not spread in order for the blocks to be firmly fixed. For the first row of gas blocks on the base, only cement is used.

Adhesive mortar

Stores sell adhesive mixtures in dry form. They are directly used to prepare small amounts of adhesive mortar during masonry. Used mortar soon dries out, solidifies, and becomes unsafe for use. Adding more water or a dry adhesive mixture won’t make it softer.

First, fill the container with water (1 liter for every 5 kg of dry mixture) to make the adhesive mortar. Next, add the dry adhesive mixture to the water in a thin stream while stirring continuously. Once everything has been added and well whisked, let the mixture stand for ten minutes before thoroughly mixing once more. The consistency of a well-prepared solution should be thick sour cream with a consistent texture.

Cement-sand mixture

Mix cement, sand, and water to make a cement-sand mortar, paying attention to the component proportions required to achieve the required grade. Different additives can be added to the mixture’s conventional composition as needed.

The solution gets more plastic, better holds the masonry, and resists crumbling and falling out when clay is added. The performance characteristics of the cement mixture, such as its resistance to moisture and frost, will be enhanced by the addition of special plasticizers.

What to choose

Each of the options has benefits and drawbacks. Making masonry mixtures with your hands is simple. Because cement-sand mortar is less expensive than dry adhesive mixtures, it is regarded as a more economical choice.

Both solutions offer dependable gas block fixing for masonry installations. Minor masonry mistakes can be fixed 30 to 40 minutes after laying by using a cement-sand mixture. Aerated blocks must be placed on the glue right away because the adhesive solution hardens quickly and changes to the masonry become unavoidable after 15 to 20 minutes.

When using a cement-sand mixture, the seams will have a thickness of roughly 9 mm, and when using an adhesive solution, the seams will have a maximum thickness of 3 mm. This indicates that three times less of the mixture will be required than the solution. As a result, the developer will pay slightly more for the adhesive mixture than for making a cement-sand mortar, nearly leveling out the price differences.

When it comes to thermal insulation, aerated concrete outperforms cement and adhesive mixtures. Adhesive-laid aerated concrete walls retain heat indoors more effectively because of the thinner seam.

As a result, a lot of developers prefer to lay with an adhesive mortar or, to save money, combine the two methods: internal wall installation is done with a cement-sand mortar, while building facades are laid with glue.

Laying technology

You must take some preliminary steps before beginning work: carefully read the gas block laying instructions, unpack the blocks, and move them as near to the laying site as you can.

This is crucial to remember when applying glue because it sets quickly and needs to be applied as soon as possible.

Additionally, special signal beacons must be placed with caution all the way around the walls that are being driven out. These beacons are connected to a special cord or wire that is pulled along them to act as a level during the laying process and control the accuracy of the laying.

Special horizontal marking slats are installed with the height markings of future rows at the corners of the under-construction building and at the junction of partitions. The leveling wire is attached to these markings. To make sure the wire is pulled evenly and doesn’t sag anywhere, similar slats can be installed in other areas of the laying as needed.

Waterproofing the foundation is required before laying.

Mixing the mixture

Small amounts of the adhesive solution are prepared and laid for 15 to 20 minutes. Blend in a dedicated container (a bucket would work well), adding the dry mixture and then filling it with warm water. Use a construction mixer or an electric drill fitted with a special attachment for whipping. Until the adhesive mass has a consistent consistency, you must mix.

Manufacturers create special mixtures for low-temperature construction that include ingredients that enable the final adhesive to retain its technical properties even at below-freezing temperatures.

Marking

Marking is done before any laying is done. It has to be completed along every axis on the surface of the building that is currently being built. The blocks are already arranged in a line. To get the most even horizontal, use a hand saw to adjust the blocks as needed. For this reason, the blocks are sawed from below in areas where the foundation base has protruding defects.

Laying and reinforcement

Because of the thicker laying seam, one row of gas blocks is placed on top of a cement-sand mortar to level the foundation base. In addition, because the cement-sand mixture takes longer to harden, you can carefully arrange the blocks in a horizontal line for the purpose of mounting the subsequent rows of driven masonry on top of it.

The corner blocks are laid first, and the remaining blocks in the row are arranged in accordance with them. The internal partition blocks are adjusted while keeping the pre-laid facade in mind.

No sooner than two to three hours later is the second row laid. It is preferable to use glue to lay the second and subsequent rows. Each block in the upper row is shifted by half the length in relation to the blocks laid in the lower row when blocks are laid with mandatory dressing.

In order to lay reinforcement in the blocks later, grooves are pre-made in them before the dressing is applied. The depth of the grooves is designed to allow the reinforcement to fully penetrate into them. Glue is poured into the positioned reinforcement bars.

The reinforcement layers are systematically repeated every three to four rows of masonry, with the first layer of the reinforcement belt placed between the base and the first row. A continuous reinforcement belt must be arranged in the top row of masonry, where the roof will rest.

Checking the correctness of the masonry

It is vital to frequently assess the thickness of the bonding adhesive layer and the evenness of the laid rows while the masonry is being completed. Use a building level, a rule, and a ruler for control measurements.

The rule is leaned up against the wall’s erected section in order to verify the vertical plane. Proper execution of the masonry should result in a tight fit against the wall. The horizontal line is determined by the readings of the building level, which is positioned on top of the laid blocks.

The masonry section needs to be redone if there are any deviations found in the laid blocks from either the vertical or horizontal plane. You can keep laying if there are no abnormalities found.

Finishing

An essential component of the building’s dependability and durability is the proper finishing of the erected walls. Because it is porous, aerated concrete has a high moisture absorption capacity. With well-done finishing, you can do away with this disadvantage.

For finishing, you can use any technique—plaster, putty, tiling, brickwork, cladding with clapboard, siding, etc.—that keeps aerated concrete blocks from absorbing moisture.

If you have the correct equipment, supplies, and guidance, laying aerated concrete blocks can be a simple task. Selecting a premium adhesive that meets the unique requirements of your project is the first step. To guarantee the adhesive’s performance, take into account variables like temperature, humidity, and block type. By using the proper adhesive, you can ensure the stability and durability of your structure for a long time.

It’s also crucial to determine the exact amount of adhesive needed. You can buy the appropriate quantity without needless excess if you carefully measure the size of your project and factor in any waste or additional needs. A smoother workflow is made possible by this meticulous planning, which helps to prevent disruptions during the building process.

Making these preparations makes it easier to follow the detailed instructions for installing aerated concrete blocks. Lay the first row precisely and prepare the foundation first. Proceed with caution, periodically verifying alignment and level. You can build a sturdy, stable, and aesthetically beautiful wall or structure by paying close attention to details and adhering to these instructions.

To summarise, the process of installing aerated concrete blocks necessitates a deliberate choice of adhesive, meticulous planning and measurement of materials, and strict adherence to established methods. You can get professional results that last a lifetime by planning ahead and following these guidelines. Have fun constructing!

For an aerated concrete installation to be successful, selecting the appropriate adhesive and figuring out how much is needed are essential steps. This post offers a concise, detailed tutorial on choosing the ideal glue for your purposes, guaranteeing that your blocks are firmly joined and oriented. We will also guide you through every step of the aerated concrete installation process, from surface preparation to finishing touches. You’ll have all you need to achieve a polished appearance and long-lasting results with clear instructions and practical advice.

Video on the topic

Aerated concrete block laying. adhesive solution and seams. #aerated concrete block #seams #glue #construction #construction #needhelp

Construction of a house from aerated concrete. Master class on thin-seam masonry. Build Your Own House.

Instructions: how to mix glue for laying aerated concrete blocks Porevit, summer, summer

Tile adhesive over aerated concrete? Easy!