RU2522559C1 - Concrete mixture - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: concrete mixture comprises, pts. wt.: artificial cement 25.0-27.0; ash and slag filler 53.4-57.8; indicated crumb of polyethylene foam 0.15-0.25; water 16.0-18.0; capron fibre cut into lengths of 5-15 mm 0.15-0.25; superplasticising admixture C-3 0.8-1.2, besides ash and slag filler is characterised by the following grain size composition, pts. wt.: particles larger than 0.63 mm - 0.2; larger than 0.315 mm, but smaller than 0.63 mm - 4.8; larger than 0.14 mm, but smaller than 0.315 mm - 62; smaller than 0.14 mm - 33.

EFFECT: increase of water-resisting property.

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Description

The invention relates to the building materials industry, in particular the production of concrete wall blocks that can be used in the construction of storage facilities, garages.

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 water resistance of concrete.

The technical result is achieved by the fact that the concrete mixture containing Portland cement, ash and slag filler, crumb of polyethylene foam with a particle size of up to 10 mm, water, additionally includes nylon fiber cut into segments of 5-15 mm and C-3 superplasticizer in the following ratio of components, wt.% : Portland cement 25.0-27.0; ash and slag filler 53.4-57.8; the specified crumb of polyethylene foam 0.15-0.25; water 16.0-18.0; nylon fiber 0.15-0.25 cut into segments of 5-15 mm; superplasticizer C-3 0.8-1.2, and the ash and slag filler is characterized by the following particle size distribution, wt.%: particles larger than 0.63 mm - 0.2; larger than 0.315 mm, but smaller than 0.63 mm - 4.8; larger than 0.14 mm, but smaller than 0.315 mm - 62; smaller than 0.14 mm - 33.

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 53,4 55.6 57.8 Polystyrene crumb with particle size up to 10 mm 0.15 0.2 0.25 Water 18.0 17.0 16,0

Cut into 5-15 mm nylon fiber segments 0.25 0.2 0.15 Superplasticizer S-3 1,2 1,0 0.8 Softening coefficient ~ 0.9 ~ 0.9 ~ 0.9

To prepare the concrete mixture, raw materials are prepared and dosed. Ash and slag filler is mixed with Portland cement (grade 500), water, C-3 superplasticizer are added, then nylon fiber and a crumb of polyethylene foam with a particle size of up to 10 mm are added and mixed again. The resulting concrete mixture is placed in metal (pre-lubricated with machine oil) molds and left to solidify. Then the products are removed from the molds and transported to the finished goods warehouse.

The source of information

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

Claims (1)

A concrete mixture containing Portland cement, ash and slag filler, a crumb of polyethylene foam with a particle size of up to 10 mm, water, characterized in that it further includes nylon fiber cut into sections of 5-15 mm and superplasticizer C-3 in the following ratio, wt.%: Portland cement 25.0-27.0; ash and slag filler 53.4-57.8; the specified crumb of polyethylene foam 0.15-0.25; water 16.0-18.0; nylon fiber 0.15-0.25 cut into segments of 5-15 mm; superplasticizer C-3 0.8-1.2, and the ash and slag filler is characterized by the following particle size distribution, wt.%: particles larger than 0.63 mm - 0.2; larger than 0.315 mm, but smaller than 0.63 mm - 4.8; larger than 0.14 mm, but smaller - 0.315 mm - 62; smaller than 0.14 mm - 33.