Pouring boards with a decorative surface "Washed Concrete" for permanent formwork foundation

In his description he approached one of the most interesting moments in the process of preparing to work on the construction of the slab-foundation. As previously posted, I decided not to purchase lumber for formwork. I decided to cast slabs of permanent formwork. But the plate will immediately warmed with a decorative surface "Washed concrete."

For forms acquired one sheet:

- Plywood laminated 1220h2440h18mm - 2350rub.

- Plywood laminated 1220h2440h9mm - 1693rub.

For sawing gave 125 rubles. Transported by car

Plywood 18mm will go on form 1184h450mmAnd 9mm plywood - will be the bottom for these forms. Total of the two sheets produced 5 forms. There were small cutters, which are later assembled from four mold for casting concrete for composing the sections of the fence.

Next purchased:

- Mason's net, fiberglass 2,5h1200h500, square 100x100 mm, 40 pcs. - 1560rub.

- brown pigment, the Czech Republic, 10kg - 1700rub.

- foamed polystyrene pellets, 0,6m3 (CDM) - 2 bags of 1020rub.

- Liquid soap Onega + 5L - 440rub.

- Grease Formwork Ekol-EX-42, 3l - 150rub.

- Paper, packaging, 25kg, 84mm width - 975 rubles.

All delivered to the site on their own - in his car.

On these materials, except cement, I spent 9637 rubles. For the installation of the formwork of the timber, I would have to buy about 1 m3 board 50-ki, which is slightly cheaper than the cost of the permanent formwork. And the board would have remained after stripping. But it would have been smeared with concrete. During storage until they are needed, it will take time. Can deform (by humidity fluctuations).

Laminated plywood also still handy. you can do other forms of these forms - the casting of other decorative items. What I plan to do in 2019 - I will write in the following articles.

In general, I think that I'm a little overpaid, but got a much better result than the classical scheme. Though all a bit longer. The result will be shown in the following articles. Back to the description of my actions.

Poured into forms such sequence:

Lubricates the side faces of the formwork lubricant for better separation of the concrete. Measure out the required length of the wrapping paper, cut to fit the form (450 mm). Paper impregnated concrete setting retarder. After drying was putting it on the bottom of the mold, weed sprinkled gravel layer. Kneading a concrete batch mixer with the addition of dye. One mixer adding 70 grams of the pigment. He has quality, immediately gave brown concrete.

Lecturing zakolirovanny concrete layer in the form of about 3 cm. Next was putting steklokompozitnuyu reinforcing mesh. Kneading polystyrene.

The sequence was as follows: 10 liters of water poured into the mixer, add 50 grams of liquid soap (for greater ductility polystyrene mixtures) added bucket cement. And portions sprinkled with polystyrene granules. Four buckets. In windy weather, it is very inefficient to do - fly granules.

After pouring the polystyrene is inserted in its mass three longitudinal bar 20x20 mm in the Level with the form - to give the recesses in the plate. This is to ensure that when pouring concrete to the foundation slab of permanent shuttering is locked securely hooked to the concrete.

During the evening managed to fill all five forms. The next day, it was possible to remove the product from the molds. In a closed greenhouse, workshop all day was hot, heated concrete and quickly grasp, gaining strength. Sometimes, when you remove the slab form, then from them steamed, and they have a temperature of over 40 degrees.

Car wash I did not. And buy it, too, did not make sense, because I have not drilled a well. But I found out, though, and the process takes more time, I do not clean off the layer of concrete to stiffen a wire brush, then wash off with water with a plastic brush and sponge.

The result below the photographs:

Hole in the middle of plates - to drain rainwater and melt water from the slab-foundation. Later, almost all closed up, leaving only those which can run with water (chosen after the rains). Then I put in plastic tubes in them.

Further plates moved to the site around the workshop. Moved tilting because pick one they can not - gets about 60 kg.

The first products stockpiled at the workshop. Within a week, watering them with water for a larger set of strength.

When wet the surface of the water - it looks much more spectacular. It turns wet stone effect. To do this, after the construction of the house, you will need to polish the surface with a plastic grinder walk a nozzle cover and a polyurethane varnish on the stone or a special primer, creating the effect of wet stone.

A top plate on photo tried to pour the contrary: first styrofoam, and then a layer of decorative coating. But the surface of the resulting undulating rocks and sank even after slight vibration, and polystyrene pop up.

There is a plate wetted with water. It looks just different.

Plate in the laundering process. As said above - first with a wire brush to clean off Uncured concrete layer, and then wash off the remnants of the sponge with water.

Contact, styrofoam permanent shuttering side plates. Somebody says that 7 cm polystyrene layer for thermal insulation of the foundation is too small. Perhaps he is right. But because I planned the house in a warm floor, and beneath it is extruded polystyrene insulation, 10cm thick, I do not think that everything will be critical and will freeze the plinth.

So I poured half a month 36 plates permanent formwork for the foundation. Next they had to install. And before that, tamp pad vibronogoy and put waterproofing.

Read more: Adjustment of plates of permanent formwork, slab foundation

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