Reinforcement of walls and partitions made of aerated concrete
The contents
Why the need for the reinforcement of concrete? First of all, it allows you to make the wall stronger and in addition, the possibility of cracking and, consequently, rapid destruction of the building becomes much lower.
Masonry reinforcement and arrangement of the fixtures must be specified in the project documentation for the construction of the building.
In that case, if the conditions for the reinforcement of concrete masonry in the documentation stated, to determine the location of the reinforcing belt must.
In most cases, reinforcement is performed for:
- blank walls;
- the first row of masonry;
- reference zones jumpers;
- level with the floor;
- walls when the distance between the ceilings more than three meters.
Additionally you should perform the reinforcement of the area of the sills. In the location of sills laying of reinforcement is carried out in pre-prepared grooves, locking them in the future with special glue. For better sealing and fixing, you can also use cement-sand mortar.
If the building is constructed of concrete blocks, the laying of reinforcement is carried out in specially prepared grooves. For the qualitative reinforcement of the walls of their size must be suitable to the diameter of the rebar and additionally must be a small margin that prevents the protrusion of the rebar when pouring a solution of glue or. To avoid damage to a building block when you cut grooves, from the edge of the block should be not less than 60 mm. along the perimeter of the rebars are welded to the walls of the gas or the resistance welding.
The most suitable temperature at which to carry out the reinforcement of the walls of aerated concrete ranges from +5 to +25 degrees Celsius. If the temperature is higher, the units definitely should be moistened with water. If the temperature is lower, you should use glue with special antifreeze additive, through which work can be carried out even at a temperature of -15 degrees.
Tools for reinforcement of concrete masonry ↑
Reinforcement of concrete is performed using the following tools:
- hand saw;
- the chasers (electric or manual);
- gon;
- building level;
- construction mixer, used to prepare the adhesive composition;
- rubber mallet;
- building dryer;
- a special glue or cement-sand mortar.
If desired, instead of rebar you can use a special reinforcing frame, made from strips of galvanized steel.
Technology of performance of works and the sequence of stages ↑
Reinforcement concrete reinforcement is carried out according to the following technology. For a start to the construction site carrying rods of rebar and concrete on pallets, covered by film. Immediately unpack the pallets are not desirable as a construction material under the influence of moisture can come into disrepair. Unzip need only the number that should be used within one day. If you use standard concrete block (600х300х200 mm) air consumption for 1 cubic meter approximately 28 pieces.
The first series laid on cement mortar. During laying it is necessary to carefully monitor its evenness, as this will depend on the evenness of all the other rows, and the reinforcement of the walls as a whole.
The future of masonry and the Foundation divided by the insulation layer.
At the corners of buildings it is desirable to choose a Reiki risks, which show the height of the masonry. This is relative to the height of the unit pull the rope, which will allow you to control the uniformity of the masonry along the entire length of the walls.
To encapsulate the reinforcement during the reinforcement of the walls is necessary to prepare adhesive composition. Him to have a smooth consistency, it should from time to time carefully removed. Consumption will be of the order of 5-15 kilograms per 1 cubic meter. In that case, if you will use cement-sand mortar, its consumption is about two times more.
Adjustment of masonry is carried out using a level and a rubber mallet. If the block is too large, it must be cut with a hand saw to fit the size. To withstand the right angle, you will need a square. Sawn block preferably at the seams to lubricate the adhesive composition.
Then comes the turn of reinforcement the first row of masonry. Experts recommend to reinforce every fourth row. For cutting stroebe use hand tools or electric wall chasers. If the wall thickness is greater than 400 mm, you need to cut 2 parallel grooves.
Using electrofan of the grooves and the surfaces of the blocks and remove all the dust. Then, the surface grooves thoroughly moistened and covered with glue to about half the depth. After that moisturize the rebars. As soon as the masonry reinforcement completed, it is pressed into the adhesive, and seal cement-sand mortar. The top surface is carefully leveled with a spatula. The remaining rows similarly reinforced.
As soon as the work on the reinforcement of the walls is completed, the outer side of walls revet with a brick, siding, clapboard, plaster, metal or ceramic sheets. If the veneer used brick, then between him and the concrete layer to leave a small gap.