CZ9518U1 - Concrete mixture for the production of noise-absorbing components - Google Patents

Description

Concrete mixture for the production of acoustic, sound absorbing components

Technical field

The technical solution relates to a concrete mixture for the production of acoustic, sound absorbing parts and fittings.

BACKGROUND OF THE INVENTION

Until now, perforated, brick or concrete fittings have been used for the production of sound-absorbing, sound-absorbing parts, from which the parts were assembled in the factories or the walls on the construction sites were lined.

The disadvantage of this solution is the fact that the appearance and sound absorption of structures is disturbed by joints and the sound absorption level reaches lower values.

The essence of the technical solution

The above-mentioned disadvantages are largely eliminated by the concrete mixture according to the invention, which comprises, in addition to cement, water, the usual additives for improving the workability and waterproofness of the concrete and, if appropriate, dyes, a light artificial or light natural aggregate aggregate or a mixture of lightweight aggregate and conventional natural aggregate.

The advantage of the concrete mixture according to the technical solution lies mainly in the fact that it is possible to produce parts with straight or profiled face from the mixture by means of vibrating or molding technology. The surface of these panels achieves sound absorption greater than 8 dB and walls of panels achieve sound insulation greater than 30 dB. The appearance of the products is uniform, slightly grainy.

Examples of technical solution

Example 1

The concrete mixture for the production of sound-absorbing sound absorbing components is prepared in such a way that per 100 parts by volume of the mixture there are 70 parts by weight of lightweight artificial aggregate of expanded clay of fractions 0 - 1 mm, 1 - 2 mm and 2 - 4 mm or 4-8 mm. 30 parts by volume of cement, which consists of 350 kg of cement per m ^{3 of} concrete mixture, water and the usual concrete additives, resp. 12 kg of dye per 1 m ^{3 of} concrete mixture.

Example 2

The concrete mixture for the production of acoustic sound absorbing components is prepared in such a way that per 100 parts by volume of the mixture there are 70 parts by volume of light artificial aggregate from expanded glass of fractions 0 - 1 mm, 1 - 2 mm and 2 - 4 mm, or 4-8 mm. 30 parts by volume of a mixture consisting of cement, water and conventional concrete additives or dyes in the amounts given in Example 1.

Example 3

The concrete mixture for the production of sound-absorbing sound absorbing components is prepared in such a way that per 100 parts of the mixture there are 70 parts of light artificial aggregate from sintered fly ash of fractions 0 - 1 mm, 1 - 2 mm and 2 - 4 mm or 4-8 mm. 30 parts by volume of a mixture consisting of cement, water and conventional concrete additives or dyes in the amounts given in Example 1.

-1 CZ 9518 Ul

Example 4

The concrete mixture for the production of sound-absorbing sound absorbing parts is prepared in such a way that per 100 parts of the mixture there are 70 parts by volume of light natural aggregate of foamed lava fractions of 0-1 mm, 1-2 mm and 2-4 mm respectively 4-8 mm and 30 parts by volume of a mixture consisting of cement, water and conventional concrete additives or dyes in the amounts given in Example 1.

Example 5

The concrete mixture for the production of acoustic sound absorbing elements is prepared in such a way that per 100 parts by volume of the mixture there are 75 parts by weight of light artificial aggregate of expanded clay of fractions 0-1 mm, 1-2 mm and 2-4 mm or 4-8 mm and ordinary natural aggregates of fractions 0-1 mm, 1 - 2 mm and 2 - 4 mm, or 4-8 mm, and 25 parts by volume of the mixture consisting of cement, water and the usual additives for concrete or coloring matter. The cement dose is

300 kg per 1 m ^{3 of} concrete mixture, the amount of additives and dyes is 12 kg per 1 m ^{3 of} concrete mixture. Example 6

The concrete mixture for the production of acoustic sound absorbing components is prepared so that per 100 parts by volume of the mixture there are 70 parts by weight of light natural aggregate of foamed lava fractions of 0 - 1 mm, 1-2 mm and 2 - 4 mm, or 4-8 mm and ordinary natural aggregates of fractions 0 - 1 mm, 1 - 2 mm and 2 - 4 mm, or 4-8 mm and 30 parts by volume of the mixture consisting of cement, water and the usual additives for concrete or coloring agents in the quantities given in the example

1. The amount of lightweight aggregate in the mixture is 45 parts by volume of 100 parts by volume of the mixture.

Example 7

The concrete mixture for the production of sound-absorbing sound absorbing components is prepared so that per 100 parts of the mixture there are 70 parts of a mixture of light artificial aggregate of expanded clay and light natural aggregate of foamed lava fractions 0 -1 mm, 1-2 mm and 2-4 mm, or 4-8 mm, and ordinary natural aggregates of 0 - 1 mm, 1 - 2 mm and 2-4 mm, or 4-8 mm and 30 parts by volume of a mixture consisting of cement, water and the usual concrete additives, The amount of the mixture of light artificial aggregate and light natural aggregate in the concrete mixture is 45 parts by volume of 100 parts by volume of the mixture, the proportion of light artificial aggregate being 25 parts by volume of 100 parts by volume of the mixture.

Industrial applicability of technical solution

The concrete mixture for the production of acoustic, acoustic components according to the technical solution is usable for the production of acoustic and acoustic components for the construction of curtains for protection against road and road noise and for the construction of architecturally favorable noise protection structures and for improving acoustic properties of external and indoor used and occupied spaces.

Claims (1)

PROTECTION REQUIREMENTS A concrete composition for the production of sound-absorbing sound-absorbing components, comprising 40 aggregates, cement, water and, where appropriate, customary additives for concrete and dyes, characterized in that 100 parts by volume of the mixture contain 50 to 70 parts by volume of aggregate selected from groups consisting of light artificial aggregates of a bulk density up to -2GB 9518 Ul 1200 kg / m ³ and grain density up to 2000 kg / m ³ and / or light natural aggregate with a bulk density of 1200 kg / m ³ and grain density up to 2000 kg / m ³ and / or conventional natural aggregate, 15 to 30 parts by volume of a mixture of cement, water and, where appropriate, concrete and / or coloring agents, with a void content of 5 to 30%, the particle size of the aggregate being between 1 and 5 mm, the amount of cement is at least 180 kg per m ^{3 of} concrete mixture and the amount of conventional concrete additives and / or dyes is up to 17.5 kg per m ^{3 of} concrete mixture.