Often, home construction is delayed so that the coming cold.Or when you need to build a house right now, and not wait until the summer.But the cement at zero temperature ceases to harden as well done bricklaying winter in sub-zero temperatures?
Why is not the solution solidifies
When the weather is cold weather, it is a major obstacle hardening solution.When the temperature drops to zero, the process stops at all.The entire mixture becomes divided into the sand, cement or other binders.A partition between them - is water that has become ice.This reaction leads to the fact that the cement have ductility due to which absolutely no horizontal joints are sealed.
What could face thawing cement
When the day comes thaw under the influence of sunlight, the walls begin to upset, because the ice is transformed again into the water.The worst thing is that this winter bricklaying gives uneven shrinkage.As a consequence, designs lose stability and strength.
In such circumstances, when the clutch is fro
Methods winter masonry
to winter bricklaying was solid, there are several ways to do this:
- added to the solution antifreeze components;
- electric heating;
- create shelters.
professional builders apply masonry bricks in the winter, however, it should be originally planned in the project.Then everything thoroughly calculated, the process to be controlled and gave good results as possible.Bricks laid on the heated solution.And yet I did not have time to freeze, it is gaining strength.Thereafter, all the freeze and thaw, solidifies again and so on.These processes calculate and predict the outcome.
Types mixtures that are used in the winter
Technology bricklaying winter provides the solution:
- lime and cement;
- also used a solution where the foundation - quick lime.
Based on the weather conditions, the brand is determined by the solution.If you do not take into account the climatic temperature, the mixture is taken, which is two orders of magnitude higher than what is intended to be used in the summer.
temperatures and selection of mixture
If it's a little lower than -3, use a mixture of summer.When the temperature of -4 to -20 ° C, then the mark is increased by two points.For example, replacing the №10 to №25.If the cold even more strong, then increase by another two degrees.
to bricklaying winter was successful, masons deliver warm solution, using special containers.They are able to maintain the required temperature of the solution.
If froze solution
If it's wind, it is necessary to heat the mixture of five degrees more.We have 25 minutes bricklayer until the solution is not frozen.If, however, it had to appear in the ice, in any case, you can not add the boiling water.This will create the pores, which also freeze water, it greatly impairs the quality of the masonry.We need to send back the frozen mixture to warm up and to work to take warm.For convenience, the required amount of solution discharged in insulated containers, and drawing from it, do work.Just following these rules, you may have the right masonry brick in cold weather.
Features winter masonry
winter masonry feature that is necessary to do everything very quickly, putting to bed the solution, you should immediately cover it with bricks, so continuing throughout the series.The growth rate of the wall up is also very important, because for a more robust design is necessary to put pressure on the upper tiers of the bottom.Only so tightly compressed joints and frozen in that position will give the necessary stability to the walls.
Although masonry that is carried out in the winter, the thickness of the seam must not be wider than summer.If the volume of the solution in seams is exceeded, it can lead to severe shrinkage after thawing.This is undesirable and may even lead to the collapse.Therefore, we must abide by these rules and bricklaying winter.Even during the breaks you need to cover the structure of roofing paper, cloth, polyethylene, in general, to keep warm as long as possible.After the solution at solidification and also provides its own heat, it is not much, but it will help solidify.You also need to make sure that all the seams were filled, and they did not have voids.After all, they can lead to uneven shrinkage, mowing or even bringing down the entire structure.
walls, floors and beams
When erected walls or pillars to do the masonry of the building, as the boundary, can act seam, which is sedimentary.The height of the structure in such circumstances should not be more than 4 m. When the clutch is ready for it immediately necessary to hoist the plate-overlap.All the beams and girders that rest on the walls, you need to connect with metal anchors.Thus, the entire structure can support the weight plates, pressing the top.Runs fixed stranding or if they are made of wood, using the pads.Only the correct bricklaying and competent consolidation will have a positive outcome.
basis for the foundation spread, protecting everything from freezing, both during and after work.This is to ensure that the foundation is not thaw began to sink rapidly, thereby exposing the masonry deformations, which may lead to collapse.In winter, the caps are placed roofing, roofing material, or polyethylene-lined concrete directly on the bed.They put in three layers is possible and more importantly, keep frost.
doing laying in the winter, use of reinforced concrete bridges, spans and if not more than 1.5m, it is possible to use ordinary jumper suspended formwork.This daily practice.Also standards provide a bearing brick masonry formwork on racks that are mounted on wedges, and when the thaw begins, they weaken.Thus, allowing the whole structure is uniformly upset.All the rack and the jumpers are set in the central part of the wall, can not prevent their displacement.After all it thawed, with formwork jumpers removed only after 15 days.
Winter masonry characterized by the fact that the height of window and door openings, as they are laid of brick should be 5 mm higher than for the same work in the summer.In any case, the solution is mixed only in the heated water.
Warm seams using electricity
There is more technology bricklaying with heating.For this purpose, the horizontal wire joints to be stacked.Its thickness may be 0.3-6 mm, and should be sufficiently long to leave the ends, which is to be able to connect to a current source.They can be a welder.When laying the wire must make sure that the solution no voids because the heating in this case would be slower and may become ineffective.
On heating the mixture itself goes only 25%, the rest of the energy is spent on bricks and warming the surrounding air.Therefore it is necessary to carefully choose the machine that is able to consistently give out the required amount of electricity.This brick masonry in the scheme which is described here, the most technologically and much more modern than the one where you have to build shelters.
There is also a way to prevent the freezing solution, applying chemicals.They are added to the solution, and they reduce the temperature at which the mixture would froze.Among these substances the most effective and widely used are: sodium chloride, calcium nitrite, calcium nitrite, in combination with urea and potassium carbonate.
However, this method of creating masonry there is a significant disadvantage, many experts argue that use it for construction of houses can not be.After all, where people will live, use chemicals unwise they may be toxic and affect the health of residents in the future.
important to remember, resorting to this method, you can not get in the way too much of these additives, since the solution can grab a lot faster than expected.Optimally enough 1-3% of the total weight of the mixture.Learn more detail, specifically how much it cost to add them, you can only empirically.
Here we examined what bricklaying, how to implement it in the cold season, and materials that may be needed.As you can see, even in a seemingly hopeless situation, there are several solutions.They, of course, require some practice and experience to accurately understand how materials behave.