- - cement;
- - gravel;
- - sand;
- - construction, metalwork and carpentry tools;
- - Edged board;
- - steel sheet thickness 1-1.5 mm;
- - rod Ø12 mm.
select the appropriate size of the foundation blocks.Concrete products plant producing blocks standard sizes.However, in order not to perform unnecessary work to fit, it is reasonable to make them such dimensions that exactly fit into the parameters of the particular foundation.It is necessary to take into account how many blocks will weigh.It is advisable to make them so that when
they did not have to involve laying a special lifting equipment.
Make a collapsible formwork for casting blocks.To do this, take two edged boards having a width equal to the block height and the length - 200 mm over its length.Prostrugayte and paint waterproof paint any of their parties.At a distance of 10 cm from the edge of the boards on the inside (colored) side of a hacksaw make two cross-cutting depth of 5-8 mm.The distance between the saw cuts should be equal to the block length.In the propylene-edged boards at their center drill holes with a diameter of 13-14 mm.Through them will be admitted ties to fasten the formwork.
Cut sheet steel thickness 1-1.5 mm two rectangular pieces, one side of which is equal to the width of the boards (height unit), the other - 10-15 mm greater than the width of the block.These sheets will play the role of the end walls of the formwork.
Cut two steel rod with a diameter of 12 mm and a length of 80-100 mm greater than the width of the block.Cut on both sides of the M12 threaded rod to a depth of 20 mm.These rods (stud) will pull the two side walls of the formwork.
Collect formwork on level ground, after the bed at him polyethylene film.To do this, thread the pin into the hole boards, insert between the boards on their edges (near the pins), two wooden spacers length equal to the width of the block and tighten the nuts on both sides of the formwork.Insert the prepared cuts metal sheets (end walls).As a result, you should get a simple form for the production of collapsible foundation block.
manufacturing production units have a groove on the end.Fill it with a solution achieved a great bond strength of the neighboring blocks.To get such a groove in a makeshift unit, set inside end walls of wood or metal formwork insert the appropriate form.
Prepare a solution of concrete in a ratio of 1: 2: 4 or 1: 3: 5 (cement: sand: gravel).Before you add water, mix thoroughly all ingredients.Water is added slowly, taking care to not formed its surplus.The stiffer (less mobile) mixture, the stronger the resulting concrete.However, it should be borne in mind that the rigid mixture requires very high quality ram.
Place the prepared solution into the mold and tamp it well.Give him time to get to grips in 1-2 days and remove the formwork.During solidification Avoid drying units, watering them with water, and shelter with plastic wrap.
Standard reinforced foundation blocks are made.You can put rebar in homemade units.However, due to the fact that the foundation it will "break" into fragments (at block boundaries), its presence is little effect on the strength of all of the foundation.More correctly is laying rebar in the horizontal joints between the blocks during their laying the foundation.With this method increases the strength of the foundation is simplified and the manufacture of the blocks themselves.However, the question - stack or stack valve in blocks - should be resolved by the owner the house under construction.
- how to make the foundation