IT202000018247A1 - PROCEDURE FOR THE CREATION OF PRODUCTS IN VIBRO-COMPRESSED CONCRETE INCLUDING GLASS AGGREGATES AND THE PRODUCT OBTAINED - Google Patents

Description

TITLE

PROCEDURE FOR THE REALIZATION OF ARTIFACTS IN

VIBRO-COMPRESSED CONCRETE INCLUDING

GLASS AGGREGATES AND PRODUCT OBTAINED

DESCRIPTION

This patent? pertaining to vibro-compressed concrete products and in particular it concerns a new process for the production of vibro-compressed concrete products with glass aggregates of various granulometry and product obtained from the process.

The manufactured articles object of the present patent include blocks for making pavements and/or road curbs

? the use of concrete blocks to create floors, in particular of external surfaces, both public and private, such as roads, driveways, courtyards, sidewalks, car parks, etc. is known.

Known concrete blocks are commercially available in various shapes and sizes. ? the use of solid blocks comprising a substantially parallelepiped-shaped central body with a generically rectangular plan is widespread.

Known blocks are usually made of concrete, optionally mixed with colored pigments, in order to obtain different shades of colour, such as, for example, pink, yellow, etc., in addition to grey.

For the construction of the blocks, the concrete? vibrated by special machines, called vibrofinishing machines or vibropresses, which vibrate and press the concrete in order to compact it adequately and give the final product the desired shape.

Other products in vibro-compressed concrete are curbs or road banks, i.e. construction elements made of concrete, commonly used to delimit an area, for example to delimit the sidewalk from the road, a flower bed, a traffic island or other.

The road curbs can be substantially linear, curved or particularly shaped, and comprise a substantially parallelepiped, straight or curved body, with a flat lower base for resting on the ground, a flat upper wall suitable for walking on, end walls and side walls.

The concrete used to make these and other vibro-compressed concrete products? obtained from a mixture consisting of cement, water and coarse and fine inert material. The composition of the mixture determines the mechanical characteristics, the compactness and the speed? of concrete drying.

The object of this patent is a new process for making multilayer vibrocompressed concrete products with at least the upper layer comprising glass aggregates of different granulometry obtained from scraps of fine crushed flat window glass, hereinafter simply referred to as glass aggregate.

Main task of the present invention ? to improve visibility? of the road bed or curb at night, favor the reflection of light by reducing the temperature of the road bed, while substantially maintaining the same mechanical performance.

One of the advantages of the present invention ? that of reusing glass waste/recovery material

These and other direct and complementary aims are achieved by the new process for manufacturing vibro-compressed concrete products with glass aggregates and the product obtained from the process.

The procedure for the construction of vibro-compressed concrete products with glass aggregates includes the following phases:

- creation of a mixture comprising: cement, coarse inert material, fine inert material, water,

- casting of said mixture having a "damp earth" consistency inside at least one mould, to form at least one layer or lower part of the article;

- vibrocompression of said mixture inside said at least one mold and extraction of the product obtained;

- creation of at least a second upper layer comprising a mixture of sand, cement, glass aggregates,

- vibrocompression of said second mixture.

Said waste/reclaimed glass aggregate ? ground with particle size preferably between 0.1 and 5 mm.

The recovery material preferably used? of the type? post-consumer? 100% recycled as defined by point 7.8.1.1 c, UNI EN ISO14021."

The method comprises, in addition to said step of casting a mixture of cement, sand, stone, a further step of casting a second mixture with aggregates of glass, sand and cement, inside said same at least one mould, to form a second upper layer or part of said article.

The procedure can also include the addition, in said second mixture with glass aggregates, of one or more? additives and/or colorants, for example fluidifiers or accelerators normally used in the production of mixtures for concrete.

The new vibrocompressed concrete product with glass aggregates object of this patent comprises a modular body obtained by vibrocompression and the drying and consolidation of a mixture containing: cement, water, coarse inert material (gravel), fine inert material (sand), and at least one top layer comprising cement, sand, glass aggregates. coming from sheet glass waste, for example windows, glass walls, etc.

Said upper layer preferably has a ratio of between 5% and 20% with respect to the lower layer.

Said artifact obtained from the procedure pu? be a screed for floors, for example of the self-locking type, a tile for coverings in general, a curb, etc.

The body of the new artifact ? then stratified, comprising at least two layers or parts, where at least a first (lower) part comprises a mixture of gravel, sand, cement while the second upper layer comprises aggregates of glass, sand, cement and ? the one intended to remain visible, i.e. exposed to external agents (trampling, light, etc.). Figure 1 shows, by way of non-limiting example, the new manufactured article M with the upper layer S comprising glass aggregates.

Are these the methods? schematics sufficient for the skilled person to implement the invention, consequently, in concrete application there may be variations without prejudice to the substance of the innovative concept. Therefore, with reference to the above description and attached drawing, the following claims are expressed.

Claims (8)

1. Process for the construction of vibrocompressed concrete products including the phases of: - ? creation of a mixture comprising: cement, coarse inert material, fine inert material, water; - ? casting of said mixture inside at least one mould, to form at least one layer or part of the article; - ? vibrocompression of said mixture inside said at least one mould; - ? creation of at least one second upper layer, - ? vibrocompression of said at least second layer, characterized in that said at least second upper layer ? a mixture, comprising sand, cement, glass aggregates coming from the shredding of waste/recovered material 2. Process, according to claim 1, characterized in that the mixture of the upper layer comprises glass aggregates obtained from waste having a size between 0.1 and 5 mm. 3. Process, according to claims 1, 2, characterized in that it also comprises the addition, in said second mixture, of one or more? additives and/or colorants. 4. Process, according to the preceding claims, characterized in that said glass aggregates are of the ?post-consumer? type? 100% recycled as defined by point 7.8.1.1 c, UNI EN ISO14021." 5. Manufactured in vibro-compressed concrete, comprising a first lower layer comprising cement, water, coarse inert material or pebbles, fine inert material or sand and a second upper layer containing cement, sand and glass aggregates coming from the shredding of waste/recovery material of sheets or pieces of glass in general. 6. Vibro-compressed concrete article according to claim 5, characterized in that it is a screed for floors, for example of the self-locking type, or a tile for coverings in general or a curb. 7. Vibro-compressed concrete article as per claims 5, 6 characterized in that it is stratified, comprising two or more? layers. 8. Manufactured in vibro-compressed concrete as per the preceding claims, characterized in that said second layer which contains glass aggregates? the one intended to remain visible, i.e. exposed to external agents and in contact with the wheels of vehicles or with people's shoes.