Partitions made of aerated concrete: recommendations for choosing blocks and constructing internal structures from them

Aerated concrete partitions are a common option for contemporary building projects. These blocks are well-known for being lightweight and having superior insulating qualities, making them perfect for building strong, energy-efficient interior walls. Aerated concrete partitions are a cost-effective and useful option for both new construction and renovation projects.

Aerated concrete block density, size, and thermal insulation qualities are important considerations when selecting blocks. Choosing the appropriate density guarantees that the walls will be sturdy enough to hold any additional fixtures or finishes you wish to add. Furthermore, choosing the right block size can facilitate a quicker and more effective building process.

Aerated concrete construction of interior structures necessitates meticulous planning and exact execution. For a partition to be sturdy and long-lasting, it is essential to align the blocks correctly and use the appropriate adhesive. Reinforcements should be added where needed, particularly in places that will support heavy fixtures or bear large loads.

Your living or work spaces will function and feel more comfortable with long-lasting partitions made with high-quality materials and by following these suggestions. In addition to their structural advantages, aerated concrete partitions improve your building’s overall energy efficiency.

Topic	Details
Choosing Aerated Concrete Blocks	Select blocks with high compressive strength for durability. Ensure blocks have good thermal insulation properties for energy efficiency. Opt for blocks with precision dimensions to reduce the need for extra mortar.
Preparing the Site	Ensure the foundation is level and clean. Use a damp-proof course to prevent moisture from rising. Mark the layout accurately to avoid mistakes during construction.
Laying the First Course	Apply a layer of mortar on the foundation. Place the first row of blocks carefully, checking for level and alignment. Use a rubber mallet to adjust the position if necessary.
Building the Wall	Apply a thin layer of adhesive mortar between blocks. Stagger the joints for stability. Regularly check for level and plumb. Use reinforcement mesh in every third or fourth course for added strength.
Creating Openings	Plan for door and window openings before starting. Reinforce the top of openings with lintels. Ensure openings are well-supported during construction.
Finishing Touches	Fill gaps and joints with mortar. Smooth out surfaces with a plaster float. Allow the structure to cure properly before applying any finishes.

Aerated concrete blocks are a great option for internal partition construction because of their strength, lightweight nature, and ease of handling. Choosing premium blocks that meet the requirements of your particular project in terms of density and dimensions is crucial to achieving the best results. Accurate alignment and strong bonding are two installation techniques that are essential to producing long-lasting, fire-resistant, and sound-proof partitions. This article provides helpful guidance on selecting the best aerated concrete blocks and detailed instructions for using them to construct durable interior structures.

Features of aerated concrete partitions

Let’s begin by discussing the benefits of aerated concrete over other commonly used partition materials:

• Aerated concrete is chosen for partitions for its light weight and low load on floors and foundations;

• Smooth large-sized blocks are quickly and easily laid, so the construction of a partition takes a minimum of time and is cheaper in terms of labor costs;

• Aerated concrete blocks are easier to lay with your own hands, as they are easy to process;
• The strength of the material is less than that of bricks, but is quite sufficient to serve as a basis for hanging structures and furniture;
• The price of one cubic meter of aerated concrete blocks is almost half that of the same volume of brick.

It is therefore not surprising that they are increasingly selecting aerated concrete over brick when it comes to partition materials. Its obvious advantage is also evident when comparing it to a frame structure covered in sheet material, such as plasterboard.

It is found in the fact that an aerated concrete wall can have a shelf or curtain rod mounted on it wherever you choose. On the other hand, in order to increase the bearing capacity of embedded parts in frame partitions, advance planning is required.

Kindly take note. It is required to use specific fasteners for lightweight cellular concrete in order to fasten suspended structures to aerated concrete.

Criteria for choosing partition blocks

Aerated concrete partition blocks come in a variety of sizes and strength grades. You must choose the partition sizes and anticipated operational loads in order to identify blocks with the best features.

Brand

The purpose of the interior partitions made of aerated concrete blocks determines the brand to use.

• For load-bearing internal walls, use structural blocks of grades D500 or D600. Their density allows hanging furniture or other interior structures weighing up to 150 kg on the partitions.
• Lightweight partitions that do not bear a significant load can be erected from thermal insulation blocks of grades D400 or D350.

As a point of reference. The block needs to be weighed if the products are unmarked or if there are questions regarding their stated density. One structural grade building stone that is 600x250x100 mm in size must weigh at least 7.5–9 kg. If it is less, the block’s density and strength are insufficient for a load-bearing partition in a home made of aerated concrete.

Dimensions

The dimensions of aerated concrete blocks from various manufacturers may vary:

• The length of partition stones is usually 600 or 625 mm.

• The height of the block is also not very diverse – most often it is 200 or 250 mm, less often – 288 mm.
• But the thickness varies from 75 to 200 mm in 25 mm increments.

It doesn’t matter how thick the partitions are when figuring out how much aerated concrete is needed for every square meter of block partition. However, the stability of the entire structure and sound insulation depend greatly on this parameter. The greater its size, the better it is and these qualities.

The table illustrates the connection between a wall’s thickness and sound-absorbing capacity:

Thickness of partitions made of aerated concrete, mm	Noise insulation index, dB
100	35-37
125	44-46
150	50-57

A partition with a thickness of 100 mm can only be as high as three meters at the same time. Should the floor height surpass these limitations, 150-200 mm thick blocks must be used.

Pile foundation calculation

Get the calculation’s outcome by sharing the link.

m.m 2 .m 2 .m 3 .22266.02 kg.kg/cm 2 .mm.mm.kg.33.54 mm.1.00 m.pcs.m.m 3 .kg.

Construction of partitions

The process of building aerated concrete partitions is done in a ready-made box and is not connected to the installation of external walls that support weight. Crucial to prevent the blocks from being exposed to moisture prior to the start of construction. They must therefore be kept out of the way of precipitation.

Preparatory work

The floors and walls at the masonry site must be completely cleared of debris and dirt from construction before installing an aerated concrete partition in a home or apartment. And get all the equipment and supplies ready. You’ll need specialized glue for aerated concrete in addition to the blocks themselves. This glue creates a very thin bonding layer that is no thicker than 3 mm. Additionally, a tiny quantity of cement mortar in the event of an uneven base.

Moreover, you’ll need to stock up on L-shaped metal connectors to secure the partition to the load-bearing walls, polyurethane foam, and metal rods for strengthening the masonry. The following connectors are suitable for use:

• A hand saw or grinder for cutting blocks;
• A notched trowel;
• A trowel;
• A chaser for making grooves in blocks for reinforcement;

• A building level;
• A cord;
• A rubber hammer;
• A grinding tool for leveling defects on the surface of the blocks;

• Drill with an attachment for mixing glue and mortar.

First row

There won’t be any issues when laying the following rows if the first row is placed exactly level:

Take a break for a few hours after the first row is laid so the cement mortar can set.

Subsequent rows

Next, using a block that is offset by half its length, construct the aerated concrete partition by hand. When laying, each stone is positioned in relation to the level, and the row is laid along a cord or laser beam.

Suggestions. Maintaining the horizontality and perfect evenness of the rows is crucial because the adhesive mortar is applied in a very thin layer. As a result, each row that has already been laid is cleaned with a brush and, if required, sanded using a specialized plane.

Unlike brick or concrete block masonry, the installation of aerated concrete partitions has its own subtleties:

• The partition is tied to the load-bearing walls in every third row using T-shaped anchors, stainless steel corners or pieces of galvanized perforated tape bent at a right angle. Such metal connectors are fastened with dowels to the vertical plane of the wall and the horizontal plane of the laid row of aerated concrete blocks.

• Aerated concrete partitions are reinforced with metal rods with a diameter of 10 mm every 2-3 rows. For reinforcement in the center of the laid row, longitudinal grooves are made using a chaser, into which rods are laid after dust removal and walled up with adhesive.

Kindly take note. You can use galvanized metal strips, which are 50 mm wide and 2 mm thick, in place of reinforcement. When laying the following row, they are placed right into the masonry joint.

• If the partition is more than 3.5 meters high and more than 8 meters long, it is reinforced with a monolithic reinforced concrete belt.

Last row

Serious vertical loads on aerated concrete should be avoided because of its low strength. As a result, aerated concrete partitions in homes should be positioned roughly 20 mm below the ceiling, as this will prevent the blocks from deforming from pressure.

This needs to be considered when laying the final row; the blocks should be cut to the appropriate height, and glue or cement mortar should not be used to fill the space between them and the ceilings. Rather, polyurethane foam is used to fill the resulting gap, creating a flexible expansion joint.

Device of openings

The width of the opening determines which covering technique is best:

• If they are less than 80 cm, it will be enough to lay the floor with ordinary partition blocks, without using lintels. To do this, they are installed on a temporary supporting frame so that the joint between the blocks is in the middle of the opening. The next rows are laid out as usual, with offset seams, and after the glue dries, the frame is removed.

• Wider openings are covered with monolithic concrete, metal or wooden lintels.

• On partitions with a thickness of 200 mm, an option with permanent formwork made of hollow U-shaped aerated concrete blocks is also possible. They are also installed on a temporary supporting frame and glued at the ends, and a reinforcing frame is installed in the resulting tray and filled with concrete. It is carefully aligned along the upper plane of the masonry and left for a while to gain strength. After which the support can be removed and masonry can continue.

Finishing of partitions

Internal walls and partitions are finished before external facades in order to preserve the material’s vapor permeability.

First, fill in any spaces that may exist between the blocks using glue. The partition’s surface is cleaned the following day, primed to enhance plaster adhesion, and then sanded.

A hydrophobic primer is applied to an aerated concrete bathroom partition before it is plastered with a moisture-resistant mixture. Other rooms with high air humidity follow the same procedure.

It is preferable to use gypsum-based mixtures in living rooms with typical humidity levels because they protect the walls’ "breathing" ability and help to maintain the ideal microclimate in the spaces.

Calculation of aerated concrete blocks and glue

ROOM PARAMETERS:PARTITIONS:

Selecting the appropriate aerated concrete blocks for your partitions is essential to guaranteeing their longevity and steadiness. In order to meet the unique requirements of your project, pay close attention to the density and strength of the blocks. While lightweight blocks are more manageable and can speed up construction, they must still offer sufficient strength for the intended application.

The right planning and preparation are essential when building interior structures. Before placing the blocks, make sure the area is tidy and level. Place the blocks in their proper locations using mortar or the proper adhesive. To guarantee a sturdy and stable partition, it is imperative to adhere to a consistent pattern with straight lines and equal spacing.

In case the partition is intended to support substantial weights or covers a sizable area, it might be prudent to add reinforcement. Steel rods or mesh inserted into the mortar joints can be used for this. Over time, proper reinforcement helps prevent cracks and structural problems while adding strength.

Lastly, adding final details like painting or plastering can improve the partition’s durability and appearance. In addition to protecting the blocks, proper finishing enhances the interior area’s visual appeal. Aerated concrete partitions can offer an effective and long-lasting solution for your building needs with careful selection and construction.

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