What to build a housekeeping house or foam concrete. Foam concrete or aerated concrete - what is better? Difference between materials and differences
If earlier the choice of building materials was limited to a certain extent, now in the market there is a rather extensive range of this product. Each private developer tries to save reasonably, and not least, on the foundation, since its value is a significant part of the overall estimate. Here is one of the reasons why cellular blocks are quite popular. At the same time, it is often necessary to decide what is better foam concrete or aerated concrete? Let's try to figure out.
What is better for construction
Thus, the price of a cellular concrete wall will be about 90 euros per M2, including the installation. Do you plan to install yourself? In this case, the price of the concrete block on M2 will be about 40 euros. When it is known that this material allows not to install inner isolation, it is clear that it allows you to build a wall or a house at a lower price!
Video: Using a cellular concrete for mounting a section
Foam concrete or cellular concrete is a good liquid concrete consisting of a solution and air bubbles. The gaseous structure is obtained from the foam injected in such a way that the stable structure is obtained. Foam is placed in a place in a mortar pumps specially created for this work.
But first you need to specify - the wording "what is better for the construction of a house-block or foam block" is not entirely correct. After all, each person always has a special opinion on this or that matter. Probably, it will be more correct to understand what operating conditions are more suitable for this or that products, what is the degree of comfort in such a house. But for this you need to know that these concrete represent themselves.
Mechanical and thermal properties
Due to the intensive mixing of air, foam concrete has unique characteristics. The amount of cement on the cubic meter is at least 300 kg. . Cell concrete is liquid and adapts to all forms. The amount of water is limited. The use of cement and sand guarantees high fire resistance and there will be no decay.
Cell concrete easily pumped. Due to high yield strength, the product can be pumped in place and is very easy to use for. Filling lost areas such as exhaust pipes, unused oil tanks. The rationale supports a specific slope on flat roofs, inclined by us. . The working surface does not contain dust and cleaned from stagnant water, holes and holes should be sealed or embedded, and, like any cement and water based product, foam concrete is susceptible to frost and precipitation.
In these building materials much in common. For example, a porous structure, the presence of the CPS ( cement-sand mixturewhich is also suitable for). The difference is only in technology and some components, from which the products acquire some differences in the properties.
Foam concrete
What is the difference between the foam block from the gas block? Its production is simpler. In the CPS, a foam or a formative substance is introduced as an additive. The density of the structure is easily controlled by a change in the "dose" of the foaming agent. Thus, it is possible to receive with its wide range - from 200 to 1 500 kg / m 3. Manufacturing is not associated with increased power consumption, since according to the technology, the use of autoclave installations is not provided. The scope of use is from the arrangement of monolithic structures to filling forms (formwork) and surfaces.
If weather conditions are unfavorable, placement is prohibited. If the basic elements of the building may be damaged by penetrating water, appropriate measures must be taken. Cell concrete has existed for over 60 years, but is practically unknown in Canada. This is anhydrous concrete, 50% is easier than ordinary concrete and more insulating. It is used in Europe for the manufacture of light concrete blocks and panels and in Asia for the construction of walls and structural overlap.
In the main composition of aerated concrete
Here are the main characteristics of the cell concrete and the reasons that interfere with it. Cell concrete: description and components. Cellular concrete is a mixture of cement, fine sand, water and swelling foam, which, after curing, creates a relatively lightweight concrete containing millions of uniformly distributed air bubbles forming closed cells.
Gasobutton
For its industrial preparation, autoclaves are used - this time. More components are two. To them, except the CPS, are silica, caustic natra (or air lime) and the "gas formation". Aluminum (as powdered) is often used as the latter.
Moisture absorption and thermal insulation
Cell concrete is similar to normal concreteBecause it uses the same ingredients except the aggregates. Thus, it hardens with humidity within 28 days after curing and after drying it is compressed by about 0, 1%, i.e. 1 mm per meter length. The quality of cell concrete should be remembered that there are no two identical cell concrete concrete. Performance depends on the mixtures used, which are very different. At the same time, as a rule, they have the following characteristics.
The density of cell concrete can be 2-10 times less than ordinary concrete. The more foaming concrete is light, the less it is resistant to the load. This lightness reduces the weight of the floors and the roofs by about 50%, as well as their reinforcing steel. Absorption of water. Cellular concrete is resistant to water and absorbs 3 times less water than ordinary concrete. This resistance to water absorption is due to the encapsulation of bubbles by a foaming agent, which reduces water transmission.
When choosing one or another building building materials The developer is guided by certain requirements that he must respond. So consider comparative characteristics Gas and foam concrete in accordance with them. Moreover, we take into account that their density is the same.
Features of application
The possibility of independent work
Fire resistance. For the same thickness, it withstands the fire 3 times longer than ordinary concrete. The wall thickness is 4 inches there is a resistance of about 3, 5 hours to fire. This elevated resistance is due to the higher thermal resistance of the cellular concrete, which holds the core of the wall for a longer protected from fire.
Acoustic stability. It has better acoustic resistance to shock noise than ordinary concrete, having good resistance to air transmission. Self-leveling and liquid. Small air bubbles and lack of large aggregate make concrete very liquid. On the floor, it is placed as self-leveling and perfectly fills vertical forms, fully surrounding reinforcing steel, without the use of the vibrator. This leads to a faster setup and a simpler pumping. We can even make partitions with a thickness of only 3 inches.
On this "parameter", aerated concrete and foam concrete is almost identical. First, the small weight of the blocks allows not to use the means of mechanization. Secondly, both easily cut, they are being worn, processed. Thirdly, the fastening of elements among themselves does not require professional skills, like, for example, when laying bricks.
There is only a small difference in geometry. The dimensions of all aerated concrete blocks are strictly withstanding, but foam blocks have deviations from the "norm" about 0.5 cm. Therefore, it will be necessary to additionally insulate joints. And if you consider that the adhesive composition is used to install aerated concrete blocks, and for their "fellow" - CPS, then the first is preferable. With this method of installation in the foam block masonry, the formation of "cold bridges" is possible. It is necessary to take into account the fact that with glue it is easier to work, and its consumption is less. In addition, it is not necessary to make "zam", as for the solution.
Economic? Cheat concrete with low density is more economical than ordinary concrete, but concrete middle density Equivalent to equivalent price. On the other hand, thanks to its speed and ease of installation, the cellular concrete reduces labor costs, and its lightness also reduces the cost of reinforcing steel in reinforced concrete structures.
Why not in Canada? Cellular concrete does not really have a defect that would limit its use in Canada. Currently, mainly the National Construction Code makes its use is problematic. Some contractors are already equipped for production in Quebec. It remains to determine their use.
Structural strength
The density of materials is the same. But on the rigidity of the aerated concrete - the leader. Therefore, for erection, for example, walls with the same characteristics, their thickness for foam concrete should be greater. Therefore, consumption increases. But when pouring monolithic structures, it is precisely it, since there is no need for the use of technical means.
Ideal for developing countries. In Canada, an 8-inch wall of cellular concrete is not very effective from an energy point of view. In this sense, the cellular concrete does not meet the needs. In Africa, Asia and South America The walls often consist of hollow concrete blocks that are easily transmitted heat and resistant to earthquakes. The monolithic wall of the filled concrete is sufficient for isolation, while providing resistance to fire, earthquakes, insects and noise while observing local architecture.
Screws with thermal insulation. The thermal insulation is an interesting solution for thermal and sound insulation of its soil. Almost and easily expands, it is applied directly on the stove, which it should cover, and then it can do the desired floor without danger.
Shrinkage
Due to the autoclave processing, it has 3 times less in aerated concrete (about 0.1 m per 1 m surface). The foam blocks will need additional insulation due to the occurrence of slots (over time).
Water absorption
Here the aerated concrete loses a little. Waterproofing surfaces should be better.
Why establish an insulating screed instead of a regular screed?
It can be used both indoors and outdoors and can be installed both in homes, repaired and in new homes. The insulating cone has many advantages. First, he offers best warmth - and sound insulation than the usual screed.
This significantly reduces heat loss in the house and reduces heating costs. It is easy, fast to use, easy to install and, therefore, an excellent alternative to insulating panels. In addition, it provides a warmer and comfortable feeling.
Ecology
Even at the foam concrete, it is 2 times lower due to the increased cement content. In addition, the replacement of autoclave processing by chemicals increases the toxicity of products.
The ability of the material to "breathe"
This property allows you to maintain a favorable microclimate in the house, prevents the development of grinding processes, the formation of mold. In addition, eliminates the need to arrange a more complex system of natural ventilation. According to this indicator, judging by the reviews of the aerated concrete, and several times.
Finally, it is necessary to apply a liquid screed on this screed, and after this second screed can be placed flooring. On the other hand, the final insulating coating is the only coating applied to the stove in front of the final flooring.
Purchase price and installation of insulating screed
For all categories, it is necessary to provide from 15 to 30 euros for square meter To buy and install an insulating screed. Then it is transported to the truck-top and applies to the ground with the pump.
- In liquid form and is ready for distribution in place.
- In the form of powder to which water is added, and the isolation granules.
Life time
Here, aerated concrete clearly wins. For durability, he surpasses its "colleague" by more than 2 times. According to experts, a foam concrete house without significantly repairs will have no more than 30 years.
Economy
According to this indicator, materials are approximately equal, if we take into account (in general) the cost of blocks, the price of the adhesive composition and compare its consumption with the CPC. However, the absence of "cold bridges" when using aerated concrete blocks significantly reduces heat loss, which affects expenses for further operation (for heating, air conditioning).
Feature of the formation of cells
In the case of a self-leveling screed after applying, the mixture has a smooth and clean surface. But if this is not a self-leveling screed, you will need to align the screed after applying to rule or using another tool. It is desirable that the insulating screed can dry for 48 hours before laying outdoor coating.
Postal Code of the Workplace. . Today, the most frequently used building material is concrete, and world production is assessed by more than 4 billion tons per year. In Italy, one of the main users will be achieved - consumption per capita in two cubic meters per year, which is due not only to his wonderful mechanical strength, but also the quality of steel, but, above all, its ability to easily simulate almost without limitation of the form and size of structures and conditions ambient.
For all other parameters - sound insulation, resistance to high temperatures, ultraviolet, rodents and insects, as well as some other materials are about the same.
| Articles |
The construction of a residential building is a process special and not tolerant errors, especially in terms of durability and comfort. Especially in our latitudes, where the temperature regime can fluctuate a substantial limits, as well as weather conditions. The choice of high-quality material in this case is an important mission, and the one who knows what he is looking for it can cope with it. Today we consider two material widely used in modern home-building - aerated concrete and foam concrete, compare them and give an estimate to each material in several characteristics.
What is better for garage, utility room or extension
Concrete is also easily accessible and remains if it is properly used, among cheaper building materials. In the future, this material will find additional applications due to durability and durability reached today with modern concrete, unsurpassed quality up to several years ago.
Chemical composition and production technology
On the other hand, it is necessary to carefully consider a critical element that knows any specialist in this area well. Concrete, in fact, a composite material consisting of inert, binders and water, even with the same quality of these components, will ensure in the case when they are put into operation, correspond to the results, if they are not higher than the desired, and also cause bad results and, Consequently, heavy maintenance or recovery.
Foam concrete in essence is cement, sand and reagent-foaming agent. All this is mixed, poured into forms and leaves alone until complete solidification. That is, the process can be made directly at the construction site.
Foamclock and Gasoblock - Appearance
Difference between materials and differences
For example, to achieve the best results, the concrete should be used as soon as possible since its preparation using machines and equipment that are most suitable for each type of casting, by applying work methods to ensure maximum material seal and ensuring a suitable seasoning period of casting, initially requiring certain attention, It is very important for the effect of performance that you want to guarantee.
An even more important is the moment of production of the concrete itself: its components must be made with maximum accuracy to accurately repeat specially designed and proven recipes for various requirements and use. Even minor deviations from the specified parameters can determine the inability of the product. It is also important to systematically and daily check the quality and characteristics of the materials used, as well as the effectiveness of machines, installations and measuring instruments, which are a complex, but the necessary set of resources necessary to ensure the quality of such a product seems to be easy to understand how delicate it is for Packaging and commissioning, and this is primarily impossible to control during use.
But aerated concrete requires high temperature and wedow. It consists of lime, cement, water and sand. Aluminum powder in this composition acts as a gas formator. The resulting mixture is cut into blocks strings and put in an autoclave. There, under the influence of high pressure, the material acquires its final form and its best qualities - resistance to mechanical effects, durability, refractory and compliance with processing.
It turns out both materials are light concrete, only a method for producing air bubbles in them is different.
Both materials are manufactured according to the same GOST, and therefore correspond to the same requirements. Their physico-technical characteristics almost repeat each other. But this does not mean the complete identity of the aerated concrete and foam concrete.
Aerated concrete at its own thermal processing It has some advantages, but to argue that he is superior to foam concrete, does not have to. Still, it is the quality of cement and its density determine the degree of quality and reliability of the product. Laying these two materials also varies: aerated concrete blocks Put on glue, and foam concrete to the usual cement solution. He is cheaper than glue, but practice shows that it takes it much more, and it is more difficult to work with it.
It turns out a curious thing - aerated concrete along with glue cost more foam concrete with cement mortarBut at the same time, the amount exits almost the same. In addition, the adhesive does not allow to arise the cold bridges, which means warming interior It will be easier that will positively affect the cost savings.
Another difference of materials is the degree of accuracy of block size. Nevertheless, at the factory, dimensions are observed much more accurate than on the construction site. Therefore, the aerated concrete is simple and more pleasant.
Comparative table of the characteristics of foam concrete and aerated concrete
Advantages and disadvantages
If we talk about the production of materials, the foam concrete in terms of the complexity of the process looks preferable. For aerated concrete, you need to build a workshop, carry out a powerful power grid, a gas pipeline. Foamclock is easy to make on laptop equipment, which is easy - their modifications are quite enough. Another thing is that a simplified production method often attracts illiterate manufacturers who do not chase the accuracy of linear dimensions, compliance with the level of thermal conductivity, density and strength. You can avoid a meeting with poor-quality products by finding a competent manufacturer who has all the necessary quality certificates and conductive periodically testing of their products for compliance with the requirements of modern standards.
Blocks of foam concrete and aerated concrete easy, and due to its size, they save glue or cement mortar
Foam concrete can be toxic - since it does not proceed in an autoclave, chemical processes are applied when it is created. It affects the strength of the product. With the same density indicator, the degree of strength from aerated concrete and foam concrete is different. Take, for example, a density of 500 units. Aerated concrete with this indicator perfectly copes with the loads, while foam concrete should not boast of high strength and is applied only as a heater.
Water absorption and frost resistance - two important indicators for the material.
The gasoblock is able to absorb more water than foam block, but at the same time less resistant to low temperatures. True, when building residential buildings, their outer side is covered protective layer In the form of plasters, tiles, siding and other materials, and therefore, the gasoblock from water exposure will be protected.
Video: Characteristics of gas and foam blocks
Home construction
Houses built from these materials will cost cheaper than bricks. And it has its own reasons. First, aerated concrete and foam concrete materials are lungs, which does not oblige a builder to build a massive foundation. Enough its lightweight version. Second, heat and sound insulation in both materials at the level, which suggests the means to save. And not only in the future. In the process of construction, you can build walls of a smaller thickness, which means saving funds on materials. Thirdly, the savings in the materials apply to glue with cement, which, with large volumes of blocks, it takes not so much.
Houses from foam blocks and gasoblocks are very reliable, because these materials are durable and nonsense. They do not rot and are not subject to attacks of rodents and insect pests.
If you lay out intraotane designs, such walls will be easy to stroke. And finally, the most important thing is that these walls are "breathing", which creates comfortable living conditions in the house.
The total purchasing cost of foam concrete with cement mortar and adhesive aerated concrete is approximately the same
Photo Gallery: Mesh concrete in construction
Walls from gas and foam blocks 'breathe' and provide comfort in the premises 
Houses from cellular concrete easily and quickly erected 
Gas and foam concrete, economical materials providing the desired wall thickness at relatively less 
Gas blocks have high thermal conductivity
It turns out that no material has an explicit advantage over others. Everyone has their own set of advantages and disadvantages, which means before stopping their choice on any of them, it is necessary to carefully analyze their features and choose what you think is best suited for the construction of the future at home.