What are the Advantages AAC Masonry over the Conventional Brick Masonry Work? 

AAC blocks have more strength than normal clay bricks.


1. Higher Strength
AAC blocks are a very strong building material. AAC blocks have the strength of more than 4N/mm2(MPa). They are more strong, robust and safe than both bricks and concrete blocks. Due to this property, they can be used conveniently in all different kinds of wall construction.
2. Very Lightweight
AAC blocks are comparatively lightweight that other types building blocks. They weigh one-third of what clay bricks weigh. They contribute to up to 20% structural savings by decreasing the dead load of the buildings. Due to this property, they are capable of reducing the damage caused to your construction during an earthquake.


3. Easy Procurement
Procuring AAC blocks is never tough. No matter what the season is, the availability of AAC blocks is high. Unlike traditional clay bricks which are not easy to get during monsoons as they are made in traditional kilns, AAC has no such seasonal restrictions. They are produced in autoclaves in factories which are unrelated and unaffected by the seasons.
4. No Special Masonry Practices Required
Working with AAC blocks is relatively very easy. Regular masons with very basic training can work with AAC blocks perfectly. The only condition is, the tools used while installing AAC blocks are specific. Using the right tools helps in offering high quality and productivity of the blocks. AAC blocks require less plaster and mortar than clay bricks while installation.


5. Very Cost Effective
The use of AAC blocks reduces the construction cost by almost 30%. It also decreases the life-cycle cost which is not possible in the case of clay bricks or conventional CLC(Cellular Lightweight Concrete) blocks. Along with being a cost-efficient material, it also helps to decrease the load on reinforced concrete blocks by 10%-15%.
6. Easy to Cut and Shape
AAC blocks have a cellular structure and are lightweight. Due to this, they can be cut in any shape as per your wish. The blocks can be easily hammered with nails or screws and are suitable to be drilled for installing electrical and plumbing lines. Using an electronic chaser machine can give better results for cutting the blocks for any purpose.
7. No Water Seepage Issues
AAC blocks contain discontinuous air pores which do not allow water to pass through. AAC blocks do not absorb water like red bricks or clay brick, which absorb a lot of water due to their high capillary action. Since there is no seepage or moisture present in the AAC blocks, they do not allow the nesting and growing of termites, mold, and mildew.

THE BENEFITS OF BUILDING WITH AAC

Autoclaved aerated concrete is manufactured as blocks or panels. Shown here are panels being placed for residential walls.


Unlike concrete masonry units, AAC blocks are solid, with no molded core holes. Standard blocks are 8 inches high, 24 inches long, and 4 to 12 inches thick. An 8x8x24-inch block weighs only 35 pounds, so it’s easier to handle than a conventional concrete block. AAC can easily be tooled also, and even cut, drilled, and shaped with woodworking tools. Napier says that there is no other material commercially available that can match AAC for fire resistance. Four inches of AAC has a 4-hour fire rating, making it ideal in commercial buildings for encasing steel columns, surrounding elevator shafts, and for other fire-stopping requirements.

Other reasons people like living in AAC homes include:

  • They are quieter because AAC walls have good sound-insulation properties
  • AAC homes are wind- and water-resistant, and rodents or termites can’t make homes or tunnels in the walls (the soft walls can even stop bullets and shrapnel).
  • The cost and length of time to build AAC shells can be significantly less than for wood-frame construction.

Application fields of autoclaved aerated concrete products

Aerated concrete is based on siliceous materials (sand, fly ash, and silica-containing tailings, etc.) and calcareous materials (lime, cement) as the main raw materials, mixed with aerating agent (aluminum powder), and through batching, mixing and pouring , Pre-curing, cutting, autoclave, curing and other processes made of light porous silicate products.

Non-load-bearing blocks are the most widely produced and used. The bulk density is generally 500 kg/m3 and 600 kg/m3. They are mainly used in infill walls and partitions in the structure without bearing the load; the bulk density of load-bearing blocks is 700 kg /m3 and 800 kg/m3, bear the load after special structure treatment in the building; the bulk density of the thermal insulation block is generally 300 kg/m3 and 400 kg/m3, mainly used for building thermal insulation; roof panels and wall panels They are all reinforced aerated concrete slabs, and their reinforcement is different according to different uses. What are the main applications of aerated concrete products?

1、High-rise frame building

Years of practice proved. The application of aerated concrete in high-rise frame buildings is economical and reasonable, especially the use of blocks to build internal and external walls, which has generally been recognized by the society.

2、Buildings in earthquake-resistant areas

Due to the light weight of the aerated concrete, the seismic force of the building is small, which is advantageous for earthquake resistance. Compared with the brick-concrete building, the same building, under the same earthquake conditions, the degree of earthquake damage is different by the earthquake design fortification level, such as the brick-concrete building When the fortification reaches 7 degrees, it will be destroyed, while the aerated concrete building will not be destroyed when the fortification reaches 6 degrees. During the Haicheng earthquake in 1975, more than 30 porous concrete buildings exhibited minor damage, while the adjacent brick-concrete buildings suffered severe damage. When the Tangshan earthquake in 1976, a five-story aerated concrete load-bearing building in Baijiazhuang, Beijing, The self-weight was only 700kg/m2. At that time, when the earthquake intensity was 6 degrees, no new cracks appeared after the earthquake. However, the lower part of the four-story mixed structure residence at 50m had large oblique cracks.

3、Buildings in severe cold areas

Aerated concrete has good thermal insulation performance. The thermal insulation effect of a 200mm thick wall is equivalent to that of a 490mm thick brick wall, because it has outstanding architectural economic effects in cold regions and is competitive.

4、Soft foundation construction

Under the same foundation conditions, the number of layers of aerated concrete buildings can be increased, which is economically advantageous. The main disadvantages of aerated concrete are large shrinkage, low modulus of elasticity, and fear of freezing damage. Therefore, aerated concrete is not suitable for the following occasions, the temperature is greater than 80 ℃, the environment with acid and alkali hazards; the long-term humid environment, especially in the cold Particular attention should be paid to the region.

Autoclaved Aerated Concrete-Environmental Benefits

AAC has manufacturing, embodied energy and greenhouse gas emission impacts similar to those of concrete based on weight, though it is one-quarter to one-fifth that of concrete based on volume. AAC products or building solutions have lower embodied energy per square meter than a concrete alternative. Additionally, AACs much higher insulation value reduces energy consumption required for heating and cooling. AAC possess significant environmental advantages over conventional building materials, such as insulation, longevity, and structural demands in one material. Total energy consumption for producing ACC is less than half of what it takes to produce other building material. AAC helps to reduce at least 30% of environmental waste than traditional concrete. Moreover, a decrease of 50% of greenhouse gas emissions can be achieved. Autoclaved aerated concrete is a better choice for the environment, and meeting the requirement for the construction of green buildings.

The development and characteristics of prefabricated houses

The prefabricated house refers to the house prefabricated and assembled on site. It uses the latest cold-pressed light steel structure and various parts of the light-weight material to combine the various parts of the house, so that it has excellent heat preservation, sound insulation, fire prevention and insect protection, energy saving, earthquake resistance, Moisture-proof function. The common practice in domestic construction is on-site production. Although this method has certain advantages, it has disadvantages such as high energy consumption, heavy wet work, and inability to guarantee the quality of the building. Residential buildings abroad are mostly prefabricated and assembled on site. This is conducive to the realization of residential industrialization. Therefore, popularizing prefabricated houses is of great practical significance.

All countries began processing and construction of prefabricated houses as early as the 1970s, including block buildings, large slab buildings, box structures, and so on.

1. Block building

The prefabricated block material is used to build a prefabricated building with a wall. The block building has strong adaptability, simple production technology, simple construction, low cost, and can also use local materials and industrial waste. . Building blocks are divided into small, medium and large. Small blocks are suitable for manual handling and masonry, with a low degree of industrialization, flexibility and convenience, and wide use. Medium-sized blocks can be hoisted by small machinery, which can save masonry labor. Large blocks have now been replaced by prefabricated large panels.

2. Panel construction

Also known as large-slab building, it is assembled from prefabricated large-scale interior and exterior wall panels, floor panels and roof panels. It is the main type of fully fabricated building in the industrialized system. The equipment in the building often uses centralized indoor pipe fittings or box-type toilets to improve the degree of assembly. The main shortcomings of large-slab buildings are that they have greater restrictions on the shape and layout of buildings, and the internal partitions of large-slab buildings with small bays and lateral load-bearing lack flexibility, which have certain limitations in the use of residences.

3. Box building

A prefabricated building developed on the basis of sheet building. This kind of building has a high degree of factoryization and quick on-site installation. Generally, not only the structural part of the box is completed in the factory, but the interior decoration and equipment are also installed, and even furniture and carpets can be installed. The box is hoisted and can be used after the pipeline is connected.

SMART WALL PANELS PRODUCT PORTFOLIO

AAC Panels are aperfect solution to construct large scale commercial and industrial buildings. They also pioneer the building materials market when it comes to practical and durable construction. From giant distribution centers to new shopping malls, Our wall protect valuable goods due to their outstanding strength and low heat absorption. Therefore, the panels are also a proven firewall solution, superior to any alternative building material.

factory

With only 25% of traditional concrete panel weight,AAC panels allow for easy handling, reduced installation time and effective labor allocation due to their simple installation system. The SUPER SMOOTH surface of the wall panels adds to an easy and attractive finish.

Frame-structure-maintenance-filling-system

Standard length of up to 6 meters

Easy and fast installation

High load-bearing capacity

Perfect solution for industrial firewalls

4 Reasons to Consider AAC blocks

A typical China structure is built with concrete hollow blocks, but right now there’s a better option available.
Autoclaved Aerated concrete or AAC blocks are made with inorganic material that make it stronger and more durable compared to what we commonly use right now.


Here are four reasons why you should consider using it instead of the old hollow blocks:
AAC Block Is a Lot Stronger Compared to Hollow Blocks
AAC blocks are able to support heavier loads without the need of steel reinforcement, unlike with concrete hollow blocks. They are also capable of withstanding strong seismic forces and impacts.
AAC Blocks Are Lighter
Despite its superior strength AAC blocks are so lightweight it can even float on water! AAC blocks reduce the dead load on foundations and is 70% percent lighter compared to traditional hollow blocks.


AAC Blocks Are Workable and Less Wasteful
There are times when a hollow block needs to be shaped in order to fit. To do this, you have to be extremely careful and use special tools or else the hollow block will break into pieces. But with AAC blocks, you can shape it according to your needs with ordinary woodworking tools without having to worry that you might break it.
Other Perks
Sound insulation – you do not need additional insulation materials because AAC blocks can significantly reduce noise pollution.
Great temperature insulation – AAC block walls give an estimated 30% of heating and cooling significance to the house or building. This means that you can conserve energy due to low thermal conductivity value.
Eco-friendly – as mentioned earlier, AAC blocks are made from inorganic materials including fly ash – an industrial waste that can be harmful to the environment if left neglected.

Economic benefits of autoclaved aerated concrete blocks

Autoclaved aerated concrete block is composed of calcareous and siliceous materials. The porous structure is formed by chemical gas generation method, and the lightweight artificial stone with high strength is obtained through autoclaved curing. It can be said that autoclaved aerated concrete block is a kind of autoclaved porous silicate concrete with special chemical aerating method. At present, autoclaved aerated concrete block products are important raw materials for the frame structures of various high-rise buildings, high precision, heat preservation,which can save a lot of land and a lot of energy, but also can turn waste into treasure, purify the environment, reduce pollution, which has both good economic benefits and significant social benefits.


First, the bulk density of the product
Autoclaved aerated concrete blocks can have a variety of bulk density, which is usually divided into four levels according to the mass of dried products per unit volume, 500, 600, 700, 800, and the mass deviation of each level is allowed to fluctuate within ±50kg/m3. At present, the main production and use of 500, 600 grade products in the Chinese market. Class 600 products are mainly load-bearing and also serve as heat preservation. Grade 500 products can be used as load-bearing materials and non-load-bearing materials (filling materials) for some units, as well as heat preservation.


Two, compressive strength
The compressive strength of autoclaved aerated concrete blocks varies with its bulk density and production process. Generally speaking, the bulk density is higher, and the products with the same bulk density have different strengths due to different production processes. Autoclaved aerated concrete block generally weighs 500-700 kg/m3, which is only equivalent to 1/4 to 1/3 of clay brick and mortar brick and 1/5 of ordinary concrete. It is a lighter kind of concrete and is suitable for filling walls of high-rise buildings and load-bearing walls of low-rise buildings. Using this material, the weight of the whole building can be reduced by more than 40% compared to the weight of ordinary brick and concrete structures. Because the building weight is reduced, the earthquake damage is small, so greatly improve the seismic capacity of the building.

Advantages of aerated concrete (AAC) wall panels in construction

(1) Reduce wet work on the construction site, improve construction efficiency and shorten the construction period by about 1/2:

The use of blocks must increase the structural columns and anti-seismic waist beam, the single wall construction needs more than three days to complete. And the block wall needs to be plastered on both sides to meet the flatness requirements. The wall plastering is completed, and it needs more than 30 days to dry. Only after drying can the construction of the coating and painting process be carried out. Aerated concrete lightweight wallboard for field measurement, size processing and production, the construction of a single wall can be completed in one day at most, the wallboard for dry construction, there is no wet field operation. After the completion of the installation of the wall roughness error is not more than 3mm, the wall without plastering, the completion of the construction can enter the wall coating paint construction process.

AAC panel

(2) Save the project cost, the maximum savings of about $10 /㎡ :

① Compared with 200mm thick aerated concrete block wall, the lightweight wall plate eliminates the constructional column and waist beam in the block wall and reduces the consumption of steel and concrete; Metope need not hang net plastering, blow putty directly. Compared with the block partition wall, the project cost can be reduced by 15.00-25.00 yuan /㎡.

②Compared with the aerated concrete block wall, the slab does not need to set constructional column and concrete waist beam, and the vertical dry bulk density of light wall slab is no more than 650kg (conservative design value is 850 kg/m3); There are masonry mortar, concrete waist beam, constructional column and plastering mortar on both sides of the aerated concrete block wall (concrete bulk density is 2400 kg/m3, cement mortar bulk density is 2000 kg/m3). Under normal conditions, the comprehensive cubic bulk density is about 1300-1400kg. The lightweight wallboard is used to effectively reduce the bearing load of the structure; Design phase according to the plate bulk density calculation and structural load, can save the steel content of about 4-6kg/㎡;

AAC panel

(3) To meet the requirements of various technical indicators and increase the indoor area:

① 150mm thick aerated concrete lightweight wallboard meets the heat preservation, heat insulation and sound insulation indexes of 200mm thick aerated concrete block; Compared with the use of aerated concrete block wall, the thickness can be reduced by more than 50mm, reducing the space occupied by the wall and increasing the indoor usable area;

②The crack resistance performance of the wall board is more obvious than that of the block wall, because there are two layers of two-way steel mesh inside to strengthen and restrict its expansion and contraction, and the contact parts of the whole wall and beam column are filled with special binder, and few cracks appear; With the passage of time, the settlement of the wall will produce more cracks in the wall and wall side, and it is difficult to deal with the cracks once they occur.

AAC panel

③high seismic performance, after the relevant seismic load failure test, the plate in the engineering structure can resist 8.0 earthquake to the wall does not fall, even if the fracture, due to the connection of the steel mesh in the plate, but also to break and do not collapse;

④Compared with sandwich color steel composite plate, the fire performance advantage is more obvious in steel structure engineering. The plate is made of inorganic materials, which is non-combustible in case of fire. The fire resistance limit of 100mm thick can reach more than 3.5 hours.

What’s the difference in the quality of construction between red bricks and AAC blocks?

AAC block is made up of fly ash, gypsum, cement, lime, and water. This is 8 times bigger than normal brick and lighter than red clay brick. Low energy required in production, low raw material consumption and recyclables of AAC block work make it environment-friendly.

METHOD OF MASONRY:

Conventional brick work has many steps – collect materials required for mortar, sand, cement, and water. Transportation of cement and sand to the place of mixing.Screening of sand before mixing in mortar. Pre-wetting of bricks before use at the site. Mixing of all the material as per the desired specification. Supervision at the time of brickwork. Curing after brickwork is complete.

AAC block has few steps – transportation is easy as the only bag of ready mix mortar is used. No pre-wetting before brickwork and curing after brickwork is required. Add water as per the required consistency. Ready-mix mortar is ready for use.

AAC block

DIFFERENCE:

1. AAC block is eco-friendly whereas conventional red brick is not.

2. On AAC block dead load on the structure is low which reduces the consumption of cement, steel, and water. Whereas using red clay brick there’s a heavy dead load on the structure.

3. AAC blocks emit less heat in the atmosphere due to less use of cement, steel, and concrete whereas on the other hand red clay bricks emits high heat to the atmosphere.

4. AAC blocks have less material wastage whereas conventional red clay bricks have high material wastage.

5. AAC block has high thermal and sound insulating properties whereas red clay bricks have low thermal and low sound insulation.

AAC blocks is a lightweight, load-bearing, high-Insulating, and durable Building Product. APEX manufacturers best quality high strength, excellent finish, cost-effective, etc. APEX, a well-known manufacturer, exporter and supplier of AAC blocks in China aims to deliver the clients with the best possible products to achieve maximum client satisfaction. Ultra-light, eco-friendly and easily transportable on-site areas these AAC blocks come very handy for construction purposes. APEX AAC blocks are the smartest choice for your construction needs.