The foundation for the house of aerated concrete: advantages and disadvantages
One of the most popular materials used for the construction of residential buildings is aerated concrete, while its popularity has only increased over the years. The modern market has long called aerated concrete one of the top sellers among similar materials, as sometimes the demand for it significantly exceeds supply. First of all, this is due to the growing demand for the construction of country houses. The material itself belongs to the category of cellular concrete. And its technology involves mixing the binder with water and adding the necessary auxiliary components. Cement acts as a binder, while silica sand and lime are used as fillers. And special additives make this material of high quality and unique.
The choice of the foundation for the type of soil
Aerated concrete is increasingly chosen in the construction of buildings and structures for various purposes. In winter, your home will be warm and cozy, if aerated concrete was chosen as the main material.An ordinary foundation, like a strip foundation, should have a number of specific properties that can give a structure strength for many years. Most experts prefer reinforced concrete slabs, in addition to which there are several other basics, which we suggest to read below. If you have not yet determined for yourself the foundation for a house of aerated concrete how to choose, the following characteristics of possible types of foundation and methods for pouring them will help you.
Types of foundations for the house of aerated concrete
- The slab foundation implies the presence of a reinforced base that protects the wall from various kinds of deformations during building shrinkage and in the future. This type of foundation is used in the construction of houses on the ground, where the groundwater level is high enough, as well as on heaving soils. Before pouring monolithic reinforced concrete slabs installed sand and gravel or ordinary sand pillow.
- The strip foundation can be buried (heaving soil) and shallowly buried (not heaving), the levels of which will be below the mark of soil freezing.The depth of the level will depend on the chosen project of the future structure and its dimensions. Aerated concrete is able to absorb moisture, so the height of the basement must be at least half a meter from the ground level and reliably secured with a heat-insulating and horizontal waterproofing layer. The maximum rigidity of the structure is provided by a frame made of reinforcement, which is sufficiently resistant to stretching and loads.
- The pile type of the foundation is characterized by the presence of piles embedded in the ground. The disadvantage of this design is that it needs to be further strengthened with the use of the pillar binding with a reinforced concrete frame, thus avoiding the appearance of cracks on the walls in the future. Piles can be reinforced bored, metal screw and hammer. But in the construction of residential buildings it is common to use the first two types. Piles are made of metal and have the shape of a pipe with coils located at the bottom. Small elements can be screwed into the ground on their own or with the help of outsiders. The interior of the structure after installation is filled with concrete.
- Column foundation with a monolithic foundation beam is used for the construction of small houses and structures with a height of not more than one floor. With the right device, such a foundation is quite stable, and additional savings on building materials will be a pleasant bonus when calculating the cost of the foundation for a house of aerated concrete.
Laying walls of aerated concrete with their own hands
First of all I would like to note that the laying of the walls of aerated concrete is much more profitable than the use of bricks. The material is quite durable and at the same time has a relatively small weight, which allows to reduce the cost of work by 35% compared to brick. The foundation for a house of aerated concrete is only the first stage of construction. The laying of the walls is also an important process, the correct outcome of which will depend on the outcome of the entire construction. Durability is also one of the most important factors, since the quality of the material will not deteriorate after a hundred years. The foundation for a house of aerated concrete has excellent indicators of stability, ease of installation and long service life.
The laying of aerated concrete blocks can be cement or adhesive. Cement mortar, like glue, has higher thermal conductivity than aerated concrete. In this regard, the thermal conductivity indices in the rooms will depend on the thickness of the selected weld. It can be concluded that when using the adhesive method in the house will be warmer, therefore, it is advised to use experienced builders. First of all, the majority draws attention to the fact that glue is several times more expensive than cement mixture. But in practice, the consumption of cement mixture is five times the consumption of glue. Only the first row of aerated concrete slabs is attached with cement mortar, since, in addition, it is not only a fastening component, but also an additional leveling layer.The basis will turn out strong if at its production to use such widespread material as gas concrete.
Ribbon foundation, like many other methods of filling, has no particular differences in the method of laying, but still worth paying attention to a few highlights. The laying should begin from the highest level of the base which is preliminary checked by the building level or a level.The lower level is leveled in a horizontal position, thereby leveling the entire surface. For subsequent rows, you can use the adhesive method.
It is quite possible to lay out the walls of aerated concrete with their own hands, having the necessary set of tools and building materials, as well as the skills of laying and working with mortar. Do not worry if the last row does not fully fit the height of the wall. Blocks can be trimmed at any time using a hacksaw.
The main method of calculation
The finished foundation for a house of aerated concrete, an example of the calculation of which is indicated by the necessary amount of materials, will be distinguished by stability. You should be guided by the parameters of aerated concrete blocks and the dimensions of the house. First you need to calculate the area of the walls. Two walls with a length of 10 m each and still as much as 8 m. The length along the perimeter will be the sum of all four sides. The height of the house is approximately 3 meters 3 x 36 = 108 square meters, which equates to the total area of the walls. Aerated concrete blocks are sold in cubic meters. The total area of the walls is multiplied by the thickness of the block (108 * 0.3) and we get 32.4 cubic meters, that is, we received the number of necessary aerated concrete blocks that we would need for the construction of external walls.
Technology laying the foundation for the house of aerated concrete is simple and quick, but requires the strict observance of several basic rules. Reinforcement of every fourth row of gas blocks is mandatory, for this purpose, the method of shaving with the help of 8-ml fiberglass reinforcement is used. The strobe must have such a depth that it can completely hide the armature in itself. Before the subsequent finishing, the surface of the blocks is plastered with dry mortar, which includes gypsum, which allows to protect the main material from excessive moisture on its surface.
Advantages of aerated concrete
- Aerated concrete is considered quite cheap products, which allows you to balance the cost of purchasing building materials.
- The material perfectly retains heat, which allows to save a lot on utility bills during the heating season. In the summer, there will be a slight coolness in the house.
- When working with this material is extremely difficult to make serious mistakes that may affect the quality and service life of aerated concrete.Use available tools and pre-purchased tools in order to facilitate the installation and installation of blocks and the subsequent work with their surface.
- Aerated concrete block weighs little, it is easy to raise it to the required height on its own, which eliminates the additional cost of renting specialized equipment.
- The wall consisting of this material does not require an additional insulation layer.
- The porous structure of aerated concrete easily brings the resulting condensate to the outside. Due to vapor permeability, it dries out pretty quickly, but you should pay special attention to the choice of finishing materials, since the use of plaster is possible, but its surface should not be covered with paint compounds that will not allow moisture to leave the structure of aerated concrete.
- The use of exclusively natural raw materials in the technology of manufacturing aerated concrete is not capable of harming human health. Many construction companies prefer to build multi-storey residential buildings from gazoblokov.
Disadvantages of aerated concrete
- Ribbon foundation for a house of aerated concrete often costs its owners a decent amount, as it requires a huge amount of building materials.
- Due to the presence in the structure of the material of through pores, aerated concrete is characterized by poor waterproofing.
- The porous structure is not able to guarantee the high strength of the material and its ability to resist to mechanical damage.
- Many people recommend waterproofing each of the blocks, as in the case of moisture stagnation, the material will necessarily absorb moisture.
- At the slightest bending stresses, brittle material will crack.
The foundation for a house of aerated concrete, the shortcomings of which completely overlap with an impressive list of its advantages, is worthy of being called one of the best among similar materials. For decades, it is in great demand and considerable popularity in almost all countries, which once again proves the quality of the material made from natural ingredients and is relatively inexpensive. Filling the foundation for a house of aerated concrete is not only a profitable investment, but also a guarantee of coziness, comfort and subsequent savings. The practicality of the material and an acceptable cost for a long time will consolidate the primacy of aerated concrete among other similar building materials.