RU2507170C1 - Concrete mixture - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention relates to industry of construction materials, in particular, to production of concrete wall blocks for low-rise construction. Concrete mixture includes, wt %: Portland cement 22-24; expanded clay gravel of 20-40 mm fraction 45.07-51.05; expanded clay sand of fraction to 5 mm 4-6; saponified rosin 0.03-0.05; superplasticiser C-3 0.3-0.4; 5-10 mm long asbestos fibre; 10-20 mm long polycaprolactam fibre 0.2-0.3; water 22-24.

EFFECT: increased strength.

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Description

The invention relates to the building materials industry, in particular the production of concrete wall blocks for low-rise construction.

Known concrete mixture, including, wt.%; cement 21.3-24.2; expanded clay 57.6-64.0; expanded clay sand 8.6-17.8; expanded perlite sand 3.2-4.6; saponified rosin 0.001-0.0012; water [1].

The objective of the invention is to increase the strength of concrete products.

The technical result is achieved by the fact that the concrete mixture, including Portland cement, expanded clay gravel, expanded clay sand, saponified rosin, water, additionally contains superplasticizer C-3, asbestos fiber and nylon fiber in the following ratio, wt.%: Portland cement 22-24; expanded clay gravel fractions of 20-40 mm 45.07-51.05; expanded clay sand fractions up to 5 mm 4-6; saponified rosin 0.03-0.05; superplasticizer C-3 0.3-0.4; asbestos fiber 5-10 mm long 0.2-0.4; nylon fiber 10-20 mm long 0.2-0.3; water 22-24. The compositions of the concrete mixture are shown in the table.

Components Content, wt.% composition No. 1 composition No. 2 composition No. 3 Portland cement 24 23 22 Expanded clay gravel
fractions of 20-40 mm 45.07 48.06 51.05 Expanded clay sand
fractions up to 5 mm 6 5 four Saponified Rosin 0,03 0.04 0.05 Superplasticizer S-3 0.4 0.35 0.3 Asbestos fiber
5-10 mm long 0.2 0.3 0.4 Nylon fiber
10-20 mm long 0.3 0.25 0.2 Water 24 23 22

To prepare the concrete mixture, raw materials are prepared and dosed. Portland cement, expanded clay gravel (fraction 20-40 mm), expanded clay sand (fraction up to 5 mm), S-3 superplasticizer, asbestos fiber (lengths of 5-10 mm), nylon fiber (lengths of 10-20 mm), water is mixed . The prepared concrete mixture is placed in metal (pre-lubricated with mineral oil) molds and left to harden. The compressive strength of concrete obtained from the proposed mixture is 7-9 MPa.

The source of information

1.A.s.№ 1276650 of the USSR, С 04 В 28/02, 14/18, 1986.

Claims (1)

Concrete mixture, including Portland cement, expanded clay gravel, expanded clay sand, saponified rosin, water, characterized in that it additionally contains superplasticizer C-3, asbestos fiber and nylon fiber in the following ratio, wt.%: Portland cement 22-24; expanded clay gravel fractions of 20-40 mm 45.07-51.05; expanded clay sand fractions up to 5 mm 4-6; saponified rosin 0.03-0.05; superplasticizer C-3 0.3-0.4; asbestos fiber 5-10 mm long 0.2-0.4; nylon fiber 10-20 mm long 0.2-0.3; water 22-24.