RU2379266C1 - Raw mix for manufacturing of lightweight concrete - Google Patents

Abstract

FIELD: construction engineering.

SUBSTANCE: raw mix for manufacturing of lightweight concrete contains, wt %: Portland cement 14.0 - 18.0, foam granulated polystyrene 0.5 - 1.0, basalt fibre 0.2 - 0.3, saponified rosin 0.01 - 0.015, fluidifier C-3 0.01-0.015, polyacrylamide 0.01 - 0.015, Lignopan B-2 0.01 - 0.015, exfoliated vermiculite of fraction 5-10 mm 67.0 - 73.0, water - the rest.

EFFECT: higher durability of lightweight concrete.

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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 raw material mixture for the manufacture of lightweight concrete (reinforced polystyrene concrete mixture), including portlanadecement, foamed fan polystyrene, basalt fiber, saponified wood resin, plasticizing additive C-3, polyacrylamide, lignopane B-2, water [1]. The compressive strength of products obtained from such a mixture is 0.35-1.8 MPa.

The objective of the invention is to increase the strength of lightweight concrete obtained from the raw mix.

The technical result is achieved in that the raw mixture for the manufacture of lightweight concrete, including Portland cement, foamed granular polystyrene, basalt fiber, saponified wood resin, plasticizing additive C-3, polyacrylamide lignopane B-2, water, additionally contains expanded vermiculite fractions of 5-10 mm in the following ratio of components, wt.%: Portland cement 14.0-18.0, foamed granular polystyrene 0.5-1.0, basalt fiber 0.2-0.3; saponified wood resin 0.01-0.015; plasticizing additive C-3 0.01-0.015; polyacrylamide 0.01-0.015, lignopane B-2 0.01-0.015, expanded vermiculite 67.0-0.73, water - the rest.

The compositions of the raw mix for the manufacture of lightweight concrete are given in the table.

Table 1 Components Content, wt.%: composition No. 1 composition No. 2 Portland cement 14.0 18.0 Granular foam polystyrene 1,0 0.5 Basalt fiber 0.2 0.3 Wood Resin saponified 0.01 0.015 Plasticizing additive C-3 0.015 0.01 Polyacrylamide 0.015 0.01 Lignopan B-2 0.015 0.01 Bulging vermiculite 73.0 67.0 Water 11,745 14,155 The compressive strength of concrete, MPa ~ 2 ~ 2

To prepare the concrete mixture, raw materials are prepared and dosed according to the table.

Styrofoam, basalt fiber and additives, introduced together with part of the mixing water, are mixed. Then, Portland cement is introduced with stirring, expanded vermiculite, the remaining water is added. The prepared mixture is placed in metal (pre-lubricated with mineral oil) molds and served for heat and moisture treatment, which is carried out according to the regime of 3 + 9 + 3 hours at an isothermal exposure temperature of 90 ° C. Then the finished product is removed from the molds and transported to the warehouse.

Information sources

1. RU 2309134 2008.

Claims (1)

Raw mix for the manufacture of lightweight concrete, including Portland cement, foamed granular polystyrene, basalt fiber, saponified wood resin, plasticizing additive C-3, polyacrylamide, lignopane B-2, water, characterized in that it additionally contains expanded vermiculite fractions of 5-10 mm at the following ratio of components, wt.%:
Portland cement 14.0-18.0 expanded polystyrene foam 0.5-1.0 basalt fiber 0.2-0.3 saponified wood resin 0.01-0.015 plasticizing additive C-3 0.01-0.015 polyacrylamide 0.01-0.015 lignopane B-2 0.01-0.015 expanded vermiculite 67.0-73.0 water rest