composition of concrete for the foundation.Inputs of the concrete for the foundation (gravel, sand, gravel) must be inequigranular for uniform filling of possible voids.The smaller the gap, the less need then sand and cement to eliminate them.The total amount of empty space in the sand by building standards is not greater than 37% should be about 50% in the rubble, not more than 45% in the gravel.These figures compare very easily.Filler or mixture must be matched in a separate bucket to fall asleep, then pour a thin stream of it to the brim.By number of poured liquid is possible to determine the void volume.For example, when the liquid is poured into 4.5 liter, 45% of the voids.
overall composition of concrete for the foundation you need to pick up, using conventional sieve.The iron mesh sieve with 1, 0.5, 2, 4, 8 cm sieved sand and gravel, and sand through 0,5,0,15, 0.3, 2.5 mm.
Concrete for the foundation.Concrete - a solid mixture of selected aggregate, cement and water.Type of cement is usually used one that will allow the concrete to the required hardness Mix.It is necessary that gravel, sand and water, are used during the preparation were substantially clean and otherwise reduce the strength of the concrete.Mass, which is kneaded, always turns out different in consistency.When the mass becomes thick, but plastic, you should seal it, doing less work.And when the consistency of concrete similar to the wetlands, and the hard concrete, it must be sealed with a final fold.
molten concrete is distributed by gravity when they fill out a form.From the volume of water it depends on how thick the concrete mixture is obtained.The mixture is stratified with an excess of moisture in the concrete and do not wait for structural strength of concrete.Robust and reliable, you can get a blend of a very stiff dough consistency, and thus it is necessary to thoroughly seal.
Very strong compression can withstand any concrete, and if he can stretch the cracks appeared.To increase the strength of concrete used in construction of the valve metal.Higher strength reinforced concrete due to thermal expansion equal reinforcement and concrete and solid strong coupling them to one design.Sometimes
valve placed uniformly on the mass of concrete, with a welding frame.This is the most durable concrete structure.Positioning the rods in the implementation of reinforcement in the cast, you need at least 5 cm from the surface of the concrete.When the correct weight and relate concrete reinforcing bars get a very sturdy construction, able to withstand any load.
How to prepare the concrete for the foundation?Everyone understands the foundation - the foundation of all structures and buildings.They have different types: foundation of concrete blocks, concrete columns.Most holiday home is suitable for strip foundation.Concrete is used in all sectors of the construction, it is a very demanded material.
for preparation of concrete needed: clean water, sand, gravel.In the case where waste water, the water to be cleaned.Gravel should be 200% less than the liquid water and 75% less than the cement.
In preparing the concrete in the summer, always use the water just cold to the setting time was reduced.In winter, water heated to 60 degrees, and then start the concrete.
Preparation of concrete: the right amount of gravel, cement, sand put into the container.The concrete should not be foreign substances (soil, oils, grass, clay, etc.).Mix everything and add water.Then interfere using fork until smooth.Since the availability of concrete, it is necessary to use a maximum for the first two hours and then its strength is reduced.
builders need to know what the concrete structure of concrete for the foundation, how to properly prepare to make a solid foundation.
