RU2524715C1 - Raw mix for making foam concrete - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: raw mix for making foam concrete includes, wt %: portland cement 35.0-37.0, foaming agent PB-2000 0.25-0.35, TPP ash 10.65-13.25, crushed foam glass of fraction 5-10 mm 20.0-25.0, mineral wool ground and sifted through sieve No. 2.5 1.0-1.5, haydite sand 5.0-7.0, water 21.0-23.0.

EFFECT: higher heat resistance of foam concrete produced from raw mix.

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Description

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

A known mixture for the manufacture of foam concrete, including, wt.%: Portland cement 29-31; PB-2000 foaming agent 0.4-0.45; aggregate (ash TPP) 14.5-23.6; crushed foam glass 10-15; water 37-39 [1].

The objective of the invention is to increase the heat resistance of foam obtained from a raw mix.

The technical result is achieved by the fact that the raw material mixture for the production of foam concrete, including Portland cement, PB-2000 blowing agent, TPP ash, water, crushed foam glass, contains crushed foam glass of a fraction of 5-10 mm and, in addition, crushed and sifted mineral wool through mesh No. 2.5 and expanded clay sand in the following ratio of components, wt.%: Portland cement 35.0-37.0; PB-2000 blowing agent 0.25-0.35; ash TPP 10.65-13.25; crushed foam glass fraction 5-10 mm 20.0-25.0; crushed and sifted through a mesh No. 2.5 mineral wool 1.0-1.5; expanded clay sand 5.0-7.0; water 21.0-23.0.

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

The composition of the raw mix for the manufacture of foam concrete is used: Portland cement grade 400; PB-2000 foaming agent that meets the requirements of TU 2481-185-05744685-01, with a density of 1000-1200 kg / m ³ , pH 7-10, the ratio of the working solution foam with a volume fraction of foaming agent of 4%, foam stability of at least 360 s; any foamglass (trim).

Table Components Composition, wt.% one 2 3 Portland cement 35.0 36.0 37.0 Frother PB-2000 0.35 0.3 0.25 Ash TPP 10.65 12.45 13.25 Crushed foamglass fraction 5-10 mm 25.0 22.5 20,0 Crushed and sifted through a mesh No. 2.5 mineral wool 1,0 1.25 1,5 Expanded clay sand 7.0 6.0 5,0 Water 21.0 21.5 23.0 Heat resistance of foam concrete according to GOST 20910-90 “Heat-resistant concrete. Technical conditions 5 5 5

To prepare the raw mix, the raw materials are prepared and dosed. Ash TPP, crushed foam glass fraction 5-10 mm, crushed and sifted through a mesh No. 2.5 mineral wool, expanded clay sand and Portland cement are mixed in a separate container. In another container, beat up a uniform foam using water, a PB-2000 blowing agent. After preparing the foam with constant stirring, a mixture of TPP ash, crushed foam glass of a fraction of 5-10 mm, crushed and sifted through a mesh of 2.5 mineral wool, expanded clay sand and Portland cement is introduced into it. Cooked, the mixture is evenly distributed over the area of metal forms pre-oiled and left to harden. Then the finished product is removed from the molds and transported to the warehouse.

Information sources

1. RU 2449972 C1, 2012.

Claims (1)

The raw material mixture for the manufacture of foam concrete, including Portland cement, PB-2000 foaming agent, TPP ash, water, crushed foam glass, characterized in that it contains crushed foam glass of a fraction of 5-10 mm and additionally crushed and sifted mineral wool and expanded clay through mesh No. 2.5 sand in the following ratio of components, wt.%:
Portland cement 35.0-37.0 PB-2000 foaming agent 0.25-0.35 ash TPP 10.65-13.25 crushed foam glass fraction 5-10 mm 20.0-25.0 crushed and sifted through a mesh No. 2.5 mineral wool 1.0-1.5 expanded clay sand 5.0-7.0 water 21.0-23.0