Permanent insulated aerated concrete formwork for monolithic slab or armored belt

Aerated concrete is a convenient material in terms of using blocks of different widths for technical solutions. One of them is the gluing of U-blocks and the installation of permanent formwork (outer contour) for a monolithic slab or armored belt.

According to my project, the attic floor will be mounted using the technology of frequently ribbed floors MARKO-economy. There is a calculation and a project, but I will talk about this in a separate article. In the meantime, you need to lay out the outer contour of the masonry from blocks 10 cm wide and insulate them.

As usual, I start from the corners. I pull the mooring thread along the contour. I lead the horizontal part with mineral glue. Vertical seam - on glue-foam. Control of the vertical level (so that the blocks do not fall over). Part of this masonry began even when the lintels were not installed.

Where there were drops in the seams of the lower row, I rubbed it with a sandpaper grater of H100 grit. Not a single row of masonry can do without it.

I did not import blocks with a width of 100 mm. They began to be delivered on pallets with a volume of 1.5 m3. It's too much. I purchased in a general order a pallet of blocks with a width of 150 mm. Some of them went to the laying of partition walls, and the rest I sawed on my machine at 100 mm and 50 mm. Rather, after sawing, the width of one half became 5 mm less (the width of the blade in an electric saw).

Remains from blocks 4-5 cm wide were glued together with glue-foam and a block was obtained for laying fixed formwork. Sawed and glued the required number of blocks.

Sawing aerated concrete on a machine is a pleasure. The cut is smooth, the process is fast. But only after 1-2 cuts you need to lubricate the chain with a brush and oil. Because the oil supply in the saw is clogged with dust.

After laying the factory lintels over the windows (I wrote about them here), completed the contour of 100 mm blocks. And the outside of the box of the house took on a finished look. Next - insulation.

On the wall, I cut sheets of extruded polystyrene foam to the desired height. Penoplex (5 cm wide) glued to the blocks. All seams were filled with glue-foam for tightness. Sometimes I made inserts so as not to cut off the locking part. 2 packages of Penoplex (7 sheets each) were used for the contour 8.5x9.3 m.

Who needs an armored belt of the second floor (Mauerlat mounts) can be done in the same way, but by laying out the inner contour of 100 mm blocks. If the armopoyas is under the floor slabs, then you can see how I did on the first floor here. It shows how to glue U-blocks. On the one hand (where the plates do not rest) - I have U-blocks, and in the places of support - everything is as described in this article, plus formwork from OSB sheets.

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