SU1616876A1 - Heat insulation material - Google Patents

Abstract

The invention relates to building materials and can be used to insulate light industrial fences. In order to reduce the density and moisture absorption characteristics, the heat insulating material contains, in wt%: foam polystyrene granules with a density of 15–20 kg / m ³ and a diameter of 5–7 mm 11–25 foamed in a liquid glass solution

portland cement 38.0-40.4

surfactant 0.5-0.9

silica fume 8-11

water - the rest. The resulting material has a density of 105-110 kg / m ³ , moisture absorption for 24 hours 0.10-0.12%, water absorption for 24 hours 1.2-1.4%. 2 tab.

Description

The invention relates to building materials and can be used to insulate light industrial fences.

The purpose of the invention is to reduce the density and moisture absorption characteristics.

The technological process of manufacturing a heat insulating material consists of the following operations: foaming of polystyrene granules in a liquid glass solution to a density of 15-20 kg / m; lash foamed polystyrene grains to stabilize their properties; fractionation of polystyrene granules with a particle size of 5-7 mm; cooking polymer cement composition; polymer polymer csg molding; curing the composition and obtaining a heat insulating material. Silica fume is a heat-resistant fine powder consisting of silica (98%) and alkaline earth metal oxides (2%), with a bulk density of 0.25 g / cm, a grain size less than 0.1 µm. Silica fume is a waste product of ferrosilicon. . Polystyrene granules with a density of 15-20 kg / m have a different. dimension of 3-10 mm. The introduction of microsilica in the composition of the initial composition in combination with pre-fractionated polystyrene foam granules with a particle size of 5-7 mm makes it possible to increase the solidity of the resulting working mixture and qualitatively

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to improve the regularity of the distribution of components in the structure of the material at macro- and micro-levels due to a more dense packing of granules in a half-cement matrix, which is favorably reflected in a decrease in the density of the material and its moisture sorption characteristics, /

As a surfactant, you can use not only the sulphate mass, but also the sulphide yeast masonry, saponified lignins, etc., and the same physical and mechanical characteristics.

Specific compositions of the insulating material are given in Table. Ij, his physicomechanical characteristics are in tab. 2,

Claims (1)

: The formula was invented and Thermal insulation material, including expanded polystyrene granules with a density of 15-20 kg / m, portland cement and foamed in a liquid glass solution water characterized in that, in order to reduce the density and moisture absorption characteristics, it contains expanded polystyrene granules with a diameter of 5-7 mm and additionally a surfactant and silica fume in the following ratio of components, wt.%: These expanded polystyrene granules 11.0-12.5 Portlandcement 38.0-40.4 Surfactant0,5-0,9 Silica fume8-11 Water Else Components "N" in "" m you m mmnk pi (. The content in the composition, wt.% Table 1   G 1 T T- Polis-hyro granules: foamed c. a solution of liquid glass, 5-7 mm P 12,5 II 11,5 2,5 And Portal Star -. 38 8 9 5 0.5: 0.7 - - -39 „2 40.4 3839.2 40.4 38 P 8 0.9 0.5 9.5 P 0.7 0.9 AT 0.5 Water 0.5 4238.1 36.7 4238.1 36.7 42 Table 1 40.4 38 P AT 39.2 - 40.4 9.5 fll 0.7 0.9 0.5  42 0.70,9 38.1 36.7 -J- Average density kg / m 165 PO 107 105 PO 07 105 PO 107 105 Compressive strength, MPa0.17 0.15 0.1A5 0, U -0.15 0, 0.14 0.15 0.145 0.14 Water-absorbent for 24 hours,% (by volume) 0.16 0.10 0, 11 0.12 0.10 0.1 0.12 0.10 0.11 0.12 , Water absorption for  24 h,% (by volume - mu) 2 Group, ignite. More difficult to burn More difficult to burn 1,2 1,3, 1,4 1,2 1,3 1,4 1,4 1,4 1,4 1,4 Difficult to burn table 2 , I Flame retardant