Foundation - the foundation of any house.Its quality will depend on both the durability of the future building, and its operational characteristics.There are several types of foundations: strip, columnar, and slab pile.No matter what type will be selected for construction of the building, the most important thing - the right to prepare a concrete mix.
Any solution for the foundation consists primarily of cement, sand, gravel and water.In special cases, different plasticizers are added to the mixture.In most cases lime or clay.Mark cement chosen based on the fact on what kind of soil to build a house, in addition, take into account the level of underground water.The quality of the mixture will eventually also depends on how properly selected size fractions of sand and gravel.
solution for the foundation are doing most of the cement brand M300-400.With the first proportion of the cement / sand / gravel is 1/3/5.In applying cement brand M400 is allowed to add a mixture of four parts sand.However, this is only the case if the ground is dry and the area has a good bearing capacity.For clay soil moist during construction on slopes, silt and so on. D. Best to use cement M500.
As for the sand, it is usually chosen for the foundation of coarse river.Thus it is necessary to see to it that there was no organic impurities, as well as clay.The solution for the foundation should include only well-sifted sand.In no case can not be used instead of a slag.The fact that the slag concrete strongly absorbs moisture.The house with a base is a constant dampness.
Concrete for strip foundation, as well as for everyone else, usually contains five parts composed of crushed stone or gravel.Sometimes private developers are also using rubble stone.In the latter case, you can save a considerable amount of money.When this solution was diluted in a ratio of cement / sand 1/3.Previously at the bottom of the hole keeps the concrete, then a medium-sized quarry-stone.This is done so that the distance between the individual elements is not less than 2-3 cm. Thereafter, the rammer is poured next layer of solution.Then again, stone and so on. D.
Some private stewards used during the construction even cheaper solution for the foundation - gruntotsement.Thus, instead of taking suspesi sand, loam and loess.In addition to cheap, such a foundation has another advantage - its strength over time the quality is quite increased.Mixture proportions with generally used are the same as when applying the sand.
Many developers bought ready-mix concrete in construction organizations.Should such a solution is not much more than dry ingredients needed to cook it at home.You do not need to spend time and energy on a fairly laborious operation independent of its batch.Besides it is possible to obtain a much higher quality concrete.Solution delivery is usually performed quite easily, is prepared in this case the professional equipment, and therefore has the best characteristics.It is transported in special vehicles to the concrete mixers.
