RU2507173C1 - Concrete mixture - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention relates to industry of building materials, in particular, to production of concrete wall blocks. Concrete mixture contains, wt %: Portland cement 25.0-27.0; ash-slag filling agent 52.22-56.36; foam-polyethylene crumb sieved through No 10 sieve 0.06-0.08; asbestos fibre cut into 5-15 mm long segments 0.4-0.6; saponified wood resin 0.12-0.16; water 18.0-20.0.

EFFECT: increased frost resistance.

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Description

The invention relates to the building materials industry, in particular the production of concrete wall blocks.

Known concrete mixture containing, by weight: portland cement 1.0; ash and slag filler 3.6-9.7; crumbs of gas-filled plastic (polyethylene foam) with a particle size of up to 10 mm 0.024-0.009; water 0.6-1.1 [1].

The objective of the invention is to increase the frost resistance of concrete.

The technical result is achieved in that the concrete mixture containing Portland cement, ash and slag filler, crumb of polyethylene foam, water, further includes asbestos fiber and wood saponified resin in the following ratio of components, wt. %: Portland cement 25.0-27.0; ash and slag filler 52.22-56.36; sifted through a sieve No. 10 crumb of polyethylene foam 0.06-0.08; 0.4-0.6 asbestos fiber cut into segments of 5-15 mm; wood saponified resin 0.12-0.16; water 18.0-20.0.

The compositions of the concrete mixture are shown in the table.

Table Components Content, wt.%: composition No. 1 composition No. 2 composition No. 3 Portland cement 27.0 26.0 25.0 Ash and slag filler 52.22 54.29 56.36 Sifted through a sieve No. 10 crumb of polyethylene foam 0.06 0,07 0.08 Cut asbestos fiber into pieces of 5-15 mm 0.6 0.5 0.4 Wood Saponified Resin 0.12 0.14 0.16 Water 20,0 19.0 18.0 Frost resistance cycles ~ 50 ~ 50 ~ 50

To prepare the concrete mixture, the following raw materials are prepared and dosed: Portland cement (grade 400), ash and slag filler, crushed polyethylene foam sifted through a No. 10 sieve, cut asbestos fiber into pieces of 5-15 mm, saponified wood resin, water. The components are mixed. The resulting concrete mixture is placed in metal (pre-lubricated with machine oil) molds and served for heat and moisture treatment. Then the products are removed from the molds and transported to the finished goods warehouse. Compressive strength of concrete at the age of 28 days. will be 8-10 MPa.

Information sources

1. Patent No. 2083523 of the Russian Federation, С04В 28/04, 1997.

Claims (1)

A concrete mixture containing Portland cement, ash and slag filler, crumb of polyethylene foam, water, characterized in that it further includes asbestos fiber and wood saponified resin in the following ratio of components, wt.%: Portland cement 25.0-27.0; ash and slag filler 52.22-56.36; sifted through a sieve No. 10 crumb of polyethylene foam 0.06-0.08; 0.4-0.6 asbestos fiber cut into segments of 5-15 mm; wood saponified resin 0.12-0.16; water 18.0-20.0.