Pouring the foundation slab. Without shoes - not even start!
All that was done earlier in the works of the foundation - it is only preparatory work for one day. By day it fills bot. The most important day in chrede all that has been done in a few months.
I chose the concrete plant. I chose not raspiarenny high price, but not obscure, since there could easily cheat by brand or by volume brought concrete. I chose young enough concrete plant, but which was already known on the internet and had no negative reviews. Such a long time if they want to gain a foothold in the market - will not deceive the customer. They need to turn out the name.
I stopped on concrete M250 marks on gravel as fillers. I read that high grade concrete can be prepared by adding additives and chemicals, not by increasing the cement brand or its quantity. In essence, it's like gasoline additives. Although, maybe I'm wrong. In any case, I believe that the M250 - a minimum strength of concrete for pouring foundations.
Pre-made tray of boards that would truck mixer, the mixer was able to pour concrete into the center. But in the process, when I tried to use it - it was extremely inefficient. Concrete bad dripped on it. Just made a wooden mop for stretching and smoothing concrete:
By calculating the plate: 30 cm thickness and perimeter: 8,54h9,32m receiving volume 23.88 m3 concrete. Many recommend doing a backlog of 10%. On drawdown cushion on Nedolya concrete mixers and other situations. So I did. I ordered 26 m3 of concrete on 18.07.2018g. I took one day leave and agreed with his brother that would help to take concrete and stretch it on the plate.
In the evening, I prepared rubber boots for these works. I was sure that my brother too, they are in town. But late in the evening it turned out that they had on the site. I traveled hypermarkets in the area, but his 44-gauge is not found. I decided that wears galoshes, wrapping his legs and polyethylene tape and will take concrete and stretch on the outside of the foundation. Arriving on the scene, it turned out that I had forgotten, and his boots. I had to wrap the legs too polyethylene.
Came the first car began to take on the sides and stretch the concrete. Tray as written above - it was not effective. Arms turned faster. process photos, of course did not do, it was not before.
After 10 minutes of standing in the concrete, it became clear that the tape, which kept polyethylene - is spreading, and all our "clothing" falling apart. We did not pay attention to it. Well, a little damp with concrete legs.
Machinery came almost one after the other. five truck mixer was delivered to four of 5 m3 and one truck mixer brought 6 m3.
Because concrete order was with a margin of 2 m 3 - he more than proved. Well, how odd, it was necessary to stretch the volume of the plate. The plant did not disappoint. And the board is obtained not 30 cm, and a little thicker. Take extra concrete allowed permanent formwork, which was the height of 45cm.
Something wrong felt after the third car. Steel pinch feet. We think that rubbed against moisture. But after you have finished with concrete and began to wash off. We realized that erased in some places the skin and got into them chemical burns, which for a long time to heal. Concrete - alkaline environment. Exposed parts of the body, particularly the damaged skin must be isolated from contact with the concrete. In concrete work, always wear high rubber boots and do not expose the concrete inside.
So, what happened:
In the evening, after the concrete has started to set, I was a little rain, additionally moistened surface.
Due to the fact that extremely pinched feet, qualitatively not be purged with stove, hurry. A trifle, and rushes to the kind of imperfection. But not critical. plate on top of a warm floor.
The next day came, the water poured concrete and covered with plastic wrap. The foundation was hot, because was the reaction of curing. Water absorbs and evaporates quickly. Come and watered it for a week every day because It was no rain.
Cost to concrete:
- Concrete M250, 26 m3 (3000 r / m³, 5 machines.) - 78 thousand. rub.
- Delivery of concrete truck mixer, 5 flights - 20 thousand. rub.
in total 98 thousand. rub. cost of concrete, including delivery (35 km one way).
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Read more: Calculating the cost of decorative permanent formwork for the slab-foundation
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