LT3437B - Building material and employing the same - Google Patents

Abstract

This invention can be used in construction.Ingredients of the building material and its proportion to the mix:Portland cement and alabaster, taken in a proportion of 1: (0,25-1,5), compound - 20-60%,Polyvinyl acetate dispersion - 15-25%,shredded straw - 8-20%,special additives - 0,2-2%.The building material can be used for the production of enclosed construction elements, designed for the country ranches.

Description

The invention can be used in the construction industry. Known building materials that use Portland cement as a binder - organic materials - for wood resistance (G. Marčiukaitis,

A. Naujokaitis. Composite construction products for residential use. - New building materials, structures and technologies, (Modern building materials, structures and techniques). V., 1993, pp. 369-376). Other building materials use inorganic and organic materials as Portland cement and latex, respectively, and filler for wood (A. Kaziliūnas, V. Kazlauskas, B. Valinčienė. Sheet materials from organic waste. Building materials and products). .-V. 1994, pp. 52-53).

Insufficient mechanical resistance of known building materials. A new building material is provided which, due to the new ingredients contained in it, its characteristics and its quantitative composition, has better technical characteristics than known building materials.

The building material consists of mineral binding! material - mixture of fast-setting Portland cement 400-500 grades and construction gypsum, taken in the ratio 1: (0.25-1.5), organic binder - polyvinyl acetate dispersion of optimum concentration and organic filler - straw crushed in special mill and crusher up to 0.5-5.0 mm. Ingredients by weight: mineral binder - 20-60%; organic binder - 15-25%; organic filler - 8-20%;

special accessories - 0.2-2.0%. Special additives include binding accelerators, antiseptics, flame retardants, plasticizatons and surfactants. With less than 20% mineral binder, the article has insufficient mechanical strength and, at more than 60%, the article acquires an excessive volume. With less than 15% organic binder, the article does not provide sufficient mechanical strength and greater than 25% increases the cost of the article significantly. At less than 8% organic fill, the article becomes overweight and at more than 20% the article becomes mechanically resistant.

With less than 0.2% of special additives, the article becomes susceptible to microorganisms and fire, and above 2%, it degrades the binding properties of the organic binding agent and coagulates it.

Method of obtaining building material:

1) straw is chopped in special mills and choppers;

2) preparing an optimum density dispersion of the organic binding agent, to which specific impurities are introduced;

(3) dry mixing of the solid components;

4) mixing the homogeneous dry mixture with the dispersion of the organic binder in a blender;

5) forming the resulting mixture into a semi-finished product;

6) the semi-finished product is cured in optimal temperature and humidity mode.

The building material can be used in the production of partitioning elements for single-storey residential and outbuildings in rural areas. When partitions are used for interior walls, they can be painted, plastered or wallpapered.

The main features of the invention are as follows:

- sufficiently high resistance, thermal resistance, fire resistance, sound absorption,

- low average density, thermal conductivity, sound transmission,

- the various uses and treatments,

- the elements may be filled with cross-sections and voids,

- the components are dosed accurately and mixed first dry, then wet,

- the semi-finished product is shaped and cured.

Claims (3)

DEFINITION OF INVENTION 1. Building material containing mineral and organic binders, organic fillers and special additives, characterized in that the mineral binder is used in the form of quick-setting Portland cement 400-500 grades and building gypsum in a ratio of 1: (0.25-1 , 5), mix, polyvinyl acetate dispersion of optimum concentration is used as organic binder, and straw is used as organic filler, crushed in special mill and crusher up to 0.1-5 mm, additionally weight ratio: 20-60% Portland cement and gypsum mixture , polyvinyl acetate dispersion - 15-25%, chopped straw - 8-20%, special additives -0.2-2%. Construction material according to claim 1, characterized in that construction gypsum derived from phosphogypsum can be used in its production. 3. The use of the building material referred to in points 1 or 2 for the production of partitioning elements for single-storey residential and outbuildings in rural areas with interior walls painted, plastered or wallpapered.