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INVENTION
Patent of the Russian Federation RU2274625

COMPOSITION FOR MANUFACTURE OF POLYSTYRENE CONCRETE MIXTURE

The name of the inventor: Anatoly Petrovich Proshin (RU); Beregovoi Vitaly Alexandrovich (RU); Boltysheva Tatiana Alexandrovna
The name of the patent holder: Penza State University of Architecture and Construction
Address for correspondence: 440028, Penza, ul. G. Titova, 28, Penza State University of Architecture and Construction
Date of commencement of the patent: 2004.05.25

The invention relates to the field of construction, namely to the production of heat-insulating materials, and can be used for manufacturing effective heat-shielding structures of buildings and structures in a composite or monolithic way. The composition for manufacturing the polystyrene concrete mixture contains, by mass%: binder - 50.1; Polystyrene aggregate - 1.03, foaming agent - 0.3, blowing agent - 0.01, water - the rest, as binder - mixed binder consisting of Portland cement M 400, plaster G 5, diatomite with portland cement: gypsum: diatomite ratio equal to 6: 1,5: 1, as a polystyrene filler - foamed polystyrene granules of 0.2-0.4 mm fraction, foaming agent - synthetic foaming agent "Penostrom", as pore former - aluminum powder PAG-4-CL. The technical result: a decrease in the value of the thermal conductivity and the average density of finished products.

DESCRIPTION OF THE INVENTION

The invention relates to the field of construction, namely to the production of heat-insulating materials, and can be used for manufacturing effective heat-shielding structures of buildings and structures in a composite or monolithic way.

A composition for the manufacture of a polystyrene-concrete mixture [1] is known, comprising, by weight:

A disadvantage of this composition of a polystyrene concrete mixture is the high value of the thermal conductivity and the relatively high average density.

The purpose of the invention is to reduce the value of the thermal conductivity and the average density of finished products.

The goal is achieved by the fact that the raw mix contains, in certain proportions, a porous mixed binder, a polystyrene aggregate, water, a foaming surfactant, a blowing agent. As a binder, a mixed binder consisting of portland cement (M 400), gypsum (G 5), diatomite, with portland cement: gypsum: diatomite ratio of 6: 1.5: 1, polystyrene filler - polystyrene beads Fraction 0 , 2-0,4 mm (TU 5712-161-00284807-96), as a surfactant - synthetic foaming agent "Penostrom" (TU 2481-001-22299560-99), as pore former aluminum powder PAG-4-CL with the following Ratio of components, mass%:

The composition was prepared by the method of dry mineralization of the foam. For this, in the first step, the required amount of water was mixed with the surfactant solution and the aluminum powder, then a foam was prepared in a high-speed cavitation-type mixer.

In the second stage, without stopping the mixer, the foam was introduced in a strict sequence: first, an astringent, then a polystyrene aggregate.

The use of a mixed binder containing finely ground diatomite (S _ud = 5000 cm ² / g) made it possible to increase the stability of the freshly prepared foam and to exclude the process of sedimentation. This is due to the mineralizing effect of the particles of opal silica, which forms the basis of diatomite. The addition of a blowing agent made it possible to effectively reduce the values ​​of the average density and moisture shrinkage of the material.

In Tables 1 and 2 an example of the proposed composition of a polystyrene concrete mixture and the physical and mechanical properties of finished products are presented.

INFORMATION SOURCES

1. RU № 2150446, С 04 В 38/08, 38/10 (01.12.1998) / Authors: Rakhmanov VA, Lanyuk А.N.

CLAIM

Composition for the manufacture of a polystyrene concrete mixture comprising an astringent, a polystyrene aggregate, a foaming agent and water, characterized in that the binder comprises a mixed binder consisting of a portland cement M 400, plaster G 5, a diatomite, with a Portland cement: gypsum: diatomite ratio of 6: 1,5: 1, as a polystyrene filler - foamed polystyrene granules of 0.2-0.4 mm fraction, as foaming agent - synthetic foaming agent "Penostrom" and additionally as a blowing agent contains aluminum powder PAG-4-CL at the following ratio of components , Wt.%:

print version
Date of publication 01/18/2007

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