Ask for the difference between sand aerated concrete block and fly ash aerated concrete block?

As an industry insider, I feel compelled to tell you about it; Ash aeration and sand aeration are collectively referred to as autoclaved aerated concrete blocks. Because of the different materials used, the weight and thermal insulation effect are also very different, it is divided into ash aeration (the main materials fly ash, white ash, cement, etc.), sand aeration (the main material is quartz sand, white ash, cement, etc. after ball grinding) The full name of sand aerated is (autoclaved light sand aerated concrete block) English **AAC its products have the characteristics of light weight insulation, heat insulation, flame retardant green environmental protection, etc., its thermal conductivity is equal to or less than, and its quality is much higher than that of ash aeration, It is one of the few products that can meet the relevant national requirements after the exterior wall masonry in the cold area of northern China without doing secondary insulation, although it is higher than ash gassing, but in addition to the cost of secondary insulation, the comprehensive use cost is lower than that of ash gas. Moreover, the building does not have the shortcomings of short life, easy to fall off, flammable, etc. caused by other secondary insulation materials.

Autoclaved aerated concrete block is a general term, also called aerated block, aerated brick, foam brick, lightweight brick.

It is divided into two types: autoclaved (sand) aerated concrete block and autoclaved (ash) aerated concrete block.

Autoclaved (sand) aerated concrete blocks, referred to as sand aerated blocks or sand aerated blocks.

Autoclaved (ash) aerated concrete block, referred to as ash aerated block or ash aerated block.

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Fly ash aerated blocks are lighter.

Autoclaved aerated concrete block is a porous concrete product made of siliceous materials (sand, fly ash and silica-containing tailings, etc.) and calcareous materials (lime, cement) as the main raw materials, mixed with gassing agent (aluminum powder), and made by mixing, pouring, pre-curing, cutting, autoclaving curing and other processes, which is a new type of wall material with a wide range of uses today.

The production of "autoclaved aerated concrete blocks" can make a large use of industrial wastes such as fly ash, tailings sand and desulfurization gypsum, which is in line with the development of circular economy strategy and belongs to the new wall materials encouraged by national policies. However, due to the different conditions of local resources used by various enterprises, the raw materials and formulas selected are different, and the production of fly ash is generally called "ash aerated block"; The production of quartz sand (or tailings) is called "sand aerated block".

"Sand aerated block" needs to grind quartz sand (or tailings) into powder through a ball mill in production, so the power consumption is higher, and the amount of cement added is more, so it is slightly higher.

There is basically no difference between "gray aerated block" and "sand aerated block" in terms of use function, such as lightweight, sound insulation, heat preservation, heat insulation, fire prevention and other characteristics. Moreover, in terms of product production, quality acceptance, performance testing and construction requirements, the same national standard is adopted.

From the point of view of the use site. Both are used as infill walls in buildings, both can be used for interior and exterior walls, and are the best self-insulating walls. Now it is customary to use "sand aerated blocks" for exterior walls, and the frost resistance is slightly stronger than that of "ash aerated blocks".

From the point of view of construction methods. Most of the "ash aerated blocks" adopt "wet construction", that is, mixed mortar masonry is used, and then painted after interface treatment; Most of the "sand aerated blocks" adopt "dry construction", that is, use special binder masonry, and then scrape with surface batches after special interface treatment. However, with the improvement of the dimensional accuracy of "ash aerated block" products, there is now a trend of "dry construction".

Autoclaved aerated concrete blocks are divided into different grades according to the strength of the product and bulk density (weight per cubic meter). Commonly used: strength, bulk density B06. The higher the strength (i.e. greater than) and the lighter the bulk density (i.e. greater than b06), the higher the **.

After consulting the relevant information, the "dry construction" should use the special binder for the block, and it is best to choose the "Yitong" special binder (produced by Yitong lightweight wall factory), and there are special technical workers responsible for the construction and installation.

Special mortar for aerated concrete block is a special mortar developed according to the porous characteristics of aerated concrete block.

1. Aerated concrete is a porous structure with many pores inside. The holes are closed round holes, and the poor quality holes are continuous through holes. The porosity of aerated concrete is generally 65 75, and the maximum can reach 80.

2. When using the traditional masonry method, the sintered solid clay bricks should be thoroughly watered with water the day before masonry so that it can absorb enough water, and then plastered with mortar masonry. At this time, the water on the surface of the brick has been saturated and no longer absorbs water from the mortar, so as to ensure that the mortar is fully hydrated, the strength develops normally, and the mortar and the brick can be firmly bonded.

3. However, for aerated concrete, due to the slow water absorption speed and small water absorption of aerated concrete, the advanced pouring method is not suitable for aerated concrete.

4. When the traditional mortar masonry aerated concrete, the mortar is slowly absorbed by the aerated concrete in the water, resulting in insufficient cement hydration, the strength can not develop normally, the mortar bonding strength and compressive strength are low, the mortar and block binding are not the company, which affects the quality of the masonry, and the gypsum layer cracks, hollows out, and even falls down easily.

Aerated concrete blocks:

Aerated concrete block is a new type of building material that is light in weight, porous, heat insulation, good fire resistance, nail resistance, saw resistance, planing resistance, and resistance to cutting. Back in the early 30s of the 20th century, such products began to be produced in China and were widely used. For example:

Shanghai International Hotel, Shanghai Tower, Fuzhou Building, People's Bank of China Building and other high-rise buildings. It is an excellent new building material with the advantages of environmental protection.

Concrete block masonry is divided into two types: free plastering and thin plastering

1. The width of the plaster-free plaster joint is less than or equal to 3mm, and it is necessary to use a special mortar for aerated blocks, and the tie ribs are made of flat steel;

2. The width of the thin plastering mortar joint is about 10mm, the bonding mortar is made of ready-mixed DMM5 or DMM10, and the plastering mortar is made of DPM5 or more strength of the plastering mortar, and the strength of the plastering mortar is best not higher than M15, otherwise the risk of cracking is greater.

Mixed mortar (cement, medium sand, lime plaster, admixture) or special block masonry binders can be used.

Hello dear! I'm here to answer your questions, and I'm glad you asked! The difference between autoclaved aerated concrete blocks and fly ash aerated concrete blocks; Autoclaved aerated concrete blocks can reduce the weight of the wall, and at the same time have the effect of sound insulation and seismic resistance, which is suitable for strong maintenance, infill walls and partition walls in industrial and civil buildings.

The bulk density is 450 550 kg per square meter or 650 750 kg per square meter, two sizes. The autoclaved aerated fly ash block and aerated concrete block mentioned in the question are the popular abbreviations in the project, which are not very accurate, and the aerated concrete block is the abbreviation of autoclaved curing aerated concrete, as for the former "autoclaved fly ash aerated concrete block" is to confuse the aerated concrete block with the fly ash block, it can be remembered in this way, the role of aerated is to produce a continuous bubble of regular size and uniform inside the block, so that the unit volume weight of the block is reduced to achieve the performance of light thermal insulation, and the general cementitious material is less, Therefore, it is necessary to autoclave curing to achieve foaming agent at high temperature and achieve the specified strength. Therefore, all aerated concrete blocks autoclaved curing is a necessary process treatment, there is no difference between the two in the problem, fly ash is only used as a cementitious material as a kind of added mineral.

Hope it helps.

Sand aerated concrete block is different from aerated block concrete masonry! Hello, I am glad to answer your <> pro 1The appearance color of sand aerated concrete blocks is relatively white, and if it is river sand, some of them have a light yellow.

Touching the block with your hands is surrounded by water chestnuts, and there is a feeling of thorns. 2.The appearance of fly ash aerated concrete blocks is darker, and some have a navy blue color.

Touch the corners of the block with your hands, and the water chestnut is softer than the sand and gas. 3.Because there are more hard substances such as quartz stone and mica in the sand, the appearance strength of the sand aerated block is relatively easy to carry.

Fly ash is just the opposite, the better the strength, the easier it is to collapse the edge of the surrounding water chestnut. Hope mine can help you <>

Do you have any other questions?

Summary. Hello, special masonry mortar for aerated concrete blocks usually refers to a special mortar specially designed for aerated concrete block masonry. Compared with traditional cement mortar, this masonry mortar usually uses lightweight aggregates instead of ordinary aggregates, uses specific thickeners and admixtures, and selects cementing materials.

This special masonry mortar has the following characteristics:1The low density is conducive to controlling the weight of the wall and reducing the self-weight load of the building.

2.It has good fillability, which can fill the void of aerated concrete blocks and improve the strength and seismic performance of the wall. 3.

Good crack resistance to prevent wall cracking caused by shrinkage or temperature changes. 4.Strong adhesion, can effectively bond with aerated concrete blocks, improve the overall stability of the wall.

In a word, the special masonry mortar for aerated concrete blocks is a specially designed high-performance masonry material, which can meet the performance requirements of aerated concrete blocks and improve the overall quality and stability of the wall.

Hello, special masonry mortar for aerated concrete blocks usually refers to a special mortar designed for aerated concrete block masonry. Compared with traditional cement mortar, this kind of masonry mortar usually uses lightweight aggregates instead of ordinary aggregates, uses specific thickeners and admixtures, and selects cementing materials. This special masonry mortar has the following characteristics:

1.The low density is conducive to controlling the weight of the wall and reducing the self-weight load of the building. 2.

It has good fillability, which can fill the void of aerated concrete blocks and improve the strength and seismic performance of the wall. 3.Good crack resistance to prevent wall cracking caused by shrinkage or temperature changes.

4.Strong adhesion, can effectively bond with aerated concrete blocks, improve the overall stability of the wall. In a word, the special masonry mortar for aerated concrete blocks is a specially designed high-performance masonry material, which can meet the performance requirements of aerated concrete blocks and improve the overall quality and stability of the wall.

How big is the ash seam. Hello, the size of the ash joint depends on the size of the gap between the brick or stone, usually the width of the ash joint is between 2-10mm. The size of the ash joint has a certain impact on the appearance and structural performance.

Excessive or too small ash joints can adversely affect the durability and aesthetics of a building. Generally speaking, if the plaster seam is too large, it will not look good and will also affect the overall performance of the wall. If the ash joint is too small, the construction difficulty will increase, and the risk of leakage will also increase.

Commonly known as cement? Hello, yes, sometimes people also refer to the ash seam as "mastic". This is because when masonry the walls and floors of building materials such as tiles and marble, it is often necessary to use gray sedan mud as a filling material to fill the gaps between the bricks or the stones of the wheel.

This plaster is usually made from a mixture of cement, sand and other specific additives that guarantee adhesion and uniformity during caulking. After caulking, the material dries to form a uniform, flat and firm coating, making the walls and floors more beautiful, strong and easy to clean. Therefore, people call this kind of plaster, which sticks to bricks or stones like glue, "cement".

Abstract:Sand aerated concrete block is referred to as sand aerated block, it is made of sand instead of traditional fly ash aerated brick, it and ash aerated concrete block in addition to different raw materials, in appearance, physical properties, construction methods, environmental protection and energy consumption and other aspects are different. Compared with the two aerated blocks, the overall performance of the sand aerated block is better, and the ash block is more economical and environmentally friendly.

Let's take a look at the difference between sand aerated concrete blocks and ash aerated concrete blocks. 1. The difference between sand aerated concrete block and ash aerated concrete block is in.

Aerated concrete blocks can be divided into two types: sand aerated concrete blocks and ash aerated concrete blocks according to different raw materials, and the main differences between these two types of aerated bricks are:

1. The raw materials are different.

The raw material of sand aerated concrete block is sand, and the main raw material of ash aerated is fly ash, and their raw materials are all based on silica as the main component, the difference is that the silica content of sand is relatively high.

2. The appearance is different.

The color of sand aerated concrete blocks is mostly off-white, or white with a little yellow; The color of gray aerated concrete blocks is mostly navy blue, or gray is a little cyan. In addition, compared with gray aeration, sand aeration has a smoother appearance and higher dimensional accuracy in the overall appearance of hand combustion.

3. The physical properties are different.

Under the same dry density and bulk density, the compressive strength of sand aerated concrete block is higher than that of gray aerated concrete blockUnder the same compressive strength conditions, the pore structure of sand aerated is more complete and uniform than that of ash aeration, and the thermal insulation performance will be better. The dry shrinkage ratio of sand aerated concrete block is smaller than that of gray aerated concrete block, and the wall is not easy to crack, while the wall made of gray aerated concrete block is easy to crack in comparison.

4. Different construction methods.

Sand aerated concrete blocks are generally constructed by dry method, that is, masonry with special binders, and then scraped with surface batches after special interface treatment. Gray aerated concrete blocks mostly use wet construction, that is, mixed mortar masonry, using interface treatment and then painting, with the improvement of the dimensional accuracy of ash aerated block products. There is also a trend towards dry construction.

5. Environmental protection and energy consumption are different.

Sand needs to be mined, which has a destructive effect on the environment of the mining site, and consumes energy during mining, and consumes a lot of energy during production (needs to be finely ground), so the cost of producing sand aerated bricks is higher than the cost of producing ash aerated bricks;The fly ash is the waste discharged from the power plant, and the production of fly ash aerated concrete blocks is waste utilization, and the cost is bound to be lower.

Second, which is better, sand aerated block or ash aerated block.

Compared with the sand aerated block and the ash aerated block, there are certain advantages, after all, the sand aerated block is a replacement product compared with the traditional fly ash aerated block, and its advantage mainly lies in higher strength, and has a greater improvement in impermeability, drying shrinkage, irradiation, etc.

Of course, ash aerated block also has its own advantages, mainly the raw material fly ash is the waste discharged from the power plant, which is relatively lower cost, more economical, more energy-saving and environmentally friendly.