Concreting of winter - all the complexity of the construction process

concreting in winter conditions - what to look for?

major problem in cold temperatures - it is good to provide a solution hardening (but not quick, but it does not reach sufficient strength) on all instructions, and in fact this process must occur in wet and warm weather.In winter, this is difficult to achieve, so the acquisition of critical strength (that is, the lowest, so the construction does not fall apart in the first few minutes without a frame) is associated with minor problems.

Furthermore, concrete that need to reach a critical strength, and some designs provide also conditions to achieve grade strength .This inconvenience is accompanied with concrete work, which must withstand in the future high dynamic loads, such as waterproof concrete.

temperature on the street, of course, not happy, but also numerous deposits do not lead to the good of the components of the solution.It is therefore important to make sure that everything is stored in a dry warm place, and tested prior to mixing.And to mix the components and prepare the concrete preferably in a warm room.The ready solution must not be allowed contact with snow or rain, if there is no separate room, then place on the preparation you need to create a canopy.

concreting in winter conditions - before starting work

solution and design that they are filled, should not be colder than 5 degrees and hot 40 degrees Celsius.Therefore, taken a number of steps to create this condition. Construction heated and cleaned of snow, usually this is done with steam or boiling water.You can not, for example, prevent icing of metal structures.Therefore, all the cleanup activities are carried out directly before filling.

As for the solution, its preparation and transportation is carried out a little hectic, so as not to lose temperature and supercooled it.Concreting in winter conditions requires that all components , of which the mixture is prepared, were warm .But it should be poostorozhnichat cement, heating melkomolotogo material generally prohibited by safety regulations.

When the solution is ready, it needs to take to fill the place, losing as little heat as possible, because the internal heat of the concrete must also be the solidification, there is every degree counts.If a ready solution driven somewhere and not prepared on site, the transport should be insulated with insulation.

Another way, which helps to increase the chances of success of the concrete reinforcement is special antifreeze additives .They slow down the hardening of concrete, increasing the time to reach a critical strength.Their amount depends on the temperature and final quality requirements for concrete.

Concreting winter or provide heat hardening concrete

After the concrete is poured, the entire structure is homemade thermos.And its insulation cover film to create a greenhouse effect and not to release heat from the solution in the environment.Under the action of this internal heat curing occurs and accumulation of strength.

If the temperature outside is critical cold and internal heat is not enough to provide the necessary conditions, the heat is supplied from outside.The design can be heated by steam, running it under Termoshuba, which enveloped the structure.

can also establish concrete electric heating, however, it will require some technical interventions, but by passing an alternating current through the concrete, it is possible to provide a uniform warming of the atmosphere in okolobetonnom space.