Compositions: coating or plastic – Coating or plastic compositions – Alkali metal silicate containing
Patent
1989-06-13
1991-06-11
Morris, Theodore
Compositions: coating or plastic
Coating or plastic compositions
Alkali metal silicate containing
106624, 106627, 106628, C04B 1204, C04B 2208, C04B 1428
Patent
active
050229257
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to building materials on a cement-free base and more particularly to a composition for preparing artificial stone materials.
2. Description of the Related Art
Known in the art is a composition for preparing construction stone materials (SU, A, 808470), having the following formulation (mass %):
The material prepared from such a composition has a high ultimate compressive strength, 63.0 MPa, but features an enhanced brittleness, since it has a low ultimate bending strength, 7.0 MPa. For this reason this material has a limited application.
A composition is known for preparing construction artificial stone materials (SU, A, 464560), having the following formulation (mass %):
Liquid glass, having a constant sodium silicate component/water ratio, fails to ensure high strength characteristics of the materials prepared from such a composition (ultimate compressive strength, 42.0 MPa; ultimate bending strength, 10.0 MPa; the frost resistance of the material does not exceed 100 cycles). Such a composition is poorly adaptable to the method of semi-dry pressing, since liquid glass, because of its viscosity, is difficult to mix with dry components and is liable to segregation upon prolonged storage.
A composition is known for preparing a heat insulating material (SU, A, 863575), comprising the following components (mass %):
The material prepared from this composition is characterized by a low heat conductivity (.lambda.=0.06 W/m.multidot.K) due to the average density of up to 200 kg/m.sup.3, but it has low ultimate compressive strength, 0.41 MPa, and ultimate bending strength, 0.08 MPa, which limits its application as a building heat insulating material. The coefficient of water resistance is smaller than 0.5, so that the material cannot be used in a medium with an elevated humidity.
Also known is a composition for preparing refractory stone materials (SU, A, 763280), comprising the following components (mass %):
The material prepared from this composition by sintering at a temperature of up to 750.degree. C. with an average density of 1800 kg/cm.sup.3 is characterized by the ultimate compressive strength of 21 MPa and ultimate bending strength of 2 MPa, which become appreciably reduced at a temperature above 800.degree. C., so that the application of this material, for instance, as heat-resistant blocks or high-temperature insulation for industrial units and equipment, is limited, insofar as the service temperature of these items exceeds 1000.degree. C.
The main object of the invention is to provide such a composition for preparing artificial stone materials by appropriate qualitative and quantitative selection of the components, which would ensure enhanced compressive and bending strength characteristics of said materials under different service temperature conditions, as well as a low heat conductivity thereof.
SUMMARY OF THE INVENTION
Said object is accomplished by the provision of a composition for preparing artificial stone materials, comprising a silicate component and limestone, which, according to the invention, additionally comprises an aqueous solution of an acid with pH 1-4, and as the silicate component it comprises liquid glass with the following ratio of the components (mass %):
Such a composition, depending on the ratio of the components, ensures the preparation of a wide range of high-strength construction materials with improved frost-resistance and water-resistance characteristics. The use of soluble glass and such an aqueous acid solution in the composition provides a possibility for preparing materials by using the techniques of semidry pressing, casting, vibrocompacting, and extrusion for shaping thereof. With a decrease of the amount of soluble glass and an increase of the amount of limestone in the composition, the resulting construction material is characterized by the following parameters:
An increase of the content of liquid glass and a decrease of the content of limestone in the composition make it possi
REFERENCES:
patent: 774003 (1904-11-01), Stowell
patent: 1552270 (1925-09-01), Burke
patent: 1582117 (1926-04-01), Blomberg
patent: 1742794 (1930-01-01), Stoley et al.
patent: 2744036 (1952-05-01), Pease et al.
patent: 3256105 (1966-06-01), Alford et al.
patent: 3498807 (1970-03-01), Gresham
patent: 3874887 (1975-04-01), Dalmatov et al.
patent: 3970462 (1976-07-01), Stillman
patent: 4410365 (1983-10-01), Glukhovsky et al.
patent: 4814013 (1989-03-01), Guzeau et al.
Golovchenko Igor V.
Kuraev Oleg V.
Makhnovsky Leonid P.
Scherbina Tatyana V.
Surguchev Viktor G.
Brunsman David M.
Morris Theodore
LandOfFree
Composition for preparing artificial stone materials does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composition for preparing artificial stone materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composition for preparing artificial stone materials will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-780873