CZ27589U1 - Panel to maximize acoustic attenuation, particularly for linings of building structures - Google Patents

Abstract

Panel for maximize acoustic damping, particularly for linings of building structures comprises rubber granulate, in particular crush down rubber from recycled tires and contains the composite mixture formed by mechanical crushed rubber contents of 5 to 10 % by weight of the textile cord and a polyurethane binder.

Description

Technical field

The technical solution relates to boards for maximizing acoustic attenuation, especially for cladding of building structures and acoustic measures of buildings of transport infrastructure.

BACKGROUND OF THE INVENTION

Acoustically absorptive boards are commonly used in the construction industry as protection against the spread of noise emissions to the surroundings, especially to people's residential areas. Acoustic panels are a part of structural elements and acoustic measures of buildings. Their designs are carried out by the designer of building structures based on noise studies of the expected effects of the noise source and according to hygienic requirements for its damping.

Nowadays gabion walls with static function in civil engineering are often used. Their use is described and standardized in various domestic and international regulations. The use of gabion walls as noise protection, with enhanced sound absorption function, is described, for example, in EP 1612332 (A1) (Steinkorb zur Erstellung einer Schallshutzwand) and US 4643271 (Sound Barrier). The disadvantage of gabion structures themselves is that it is more difficult to determine their acoustic attenuation and their acoustic attenuation itself is dependent on the selected gabion fill material.

Utility model CZ 9285 (U1) (Tire recycled absorption mat for noise control measures) is also known. This utility model describes the use of a crushed textile cord obtained from recycled second-hand tires, which is bonded by means of a binder to the shape of a plate, optionally the base plate may be provided with a layer of rubber granulate. The boards thus obtained do not reach the values of sound absorption DL _a according to ČSN EN 1793-1 and airborne sound insulation DL _b according to ČSN EN 1793-2. Moreover, these plates do not have sufficient rigidity.

The essence of the technical solution

The above-mentioned disadvantages are largely eliminated by the acoustic attenuation board, especially for building cladding comprising rubber granulate, in particular crushed rubber from recycled tires, according to this technical solution. It is based on the fact that the plate consists of a composite mixture of mechanically cold crushed rubber with a grain size of 2 to 10 mm with an intermittent grain curve containing 5 to 10% by weight of textile cord and 5 to 10% by weight of polyurethane binder. 500 to 800 kg / m ³ .

The surface plate may be flat with appreciable pore structure of granules, wherein the attenuation characteristics of sound absorption _and Ye DL 5-6 db at slab thickness minutes. 100 mm, or may be a front surface plate provided with grooves, with the active surface equal to two to five times the base gauge plate, the attenuation characteristics _and sound absorption of DL is 8 to 13 db. The groove depth is preferably at most 2: 5 in relation to the thickness of the plate body.

The crushed rubber preferably contains a color fraction and the board surface is preferably coated with a flame retardant.

The plate may be provided with elements for attaching to the face side of the gabion within the wireframe of the gabion structure and / or other elements for attaching to the face side of the soundproofing support structure.

The board body preferably has a length of 1000 mm, a width of 500 mm and a thickness in the range of 100 to 160 mm, preferably 120 mm, and the board body is preferably provided with reinforcement.

The rubber granulate is obtained by crushing rubber from discarded old tires and its color is in the basic version gray-gray to black. The board design can be customized according to the requirements of different ba

U1 Variations by selecting the colors of this color fraction. The board surface may further be coated with a flame retardant. This adjustment does not affect the sound absorption of the board.

The plate may have a flat surface with an apparent porous granulate structure. Its surface shows no major unevenness and is therefore easy to maintain if necessary. The disadvantage of this solution is the lower attenuation characteristics of the sound absorption compared to the plate, whose face is provided with grooves with an active surface equal to two to five times the basic size of the plate. These plates have higher attenuation characteristics of sound absorption but reduced rigidity compared to previous plates.

The board is self-supporting with a structured sound-absorbing surface. It is designed for exterior use as part of acoustic measures in combination with supporting elements. The board is generally provided with 2-4 mounting holes for attachment to the building structure. The board is installed on the front of the building structure, the task of which is to reduce noise emissions by absorbing them. The board can be attached by means of elements which enable it to be replaced or even permanently by means of an adhesive substance.

In another embodiment, the plate may be provided with elements for attachment to the face side of the gabion within the wireframe of the gabion structure. In this case, the plate is placed inside the gabion and the risk of damage is greatly reduced.

In a further embodiment, the plate may be provided with elements for attachment to the visible side of the sound insulation structure.

The dimensions of noise barriers are derived from the required dimensions of the entire noise barriers, they are variable in production. For the purpose of manipulation, boards with the basic dimensions of 1000 x 500 mm are most often used. The thickness of the board is variable depending on the required material absorption parameters and shape adjustments, most often from 100 to 160 mm, most preferably 120 mm.

Clarification of the figures in the drawings

The acoustic attenuation plate according to the present invention will be explained in more detail with reference to the drawings, in which: Fig. 1 shows an exemplary acoustic plate in a perspective view, Fig. 2 shows a plan view and Fig. 3 shows a plan view; side view.

Examples of technical solutions

Example 1

An exemplary plate consists of a plate body 1, the face of which is provided with shaped grooves 2. The plate is provided with elements 3 formed through through mounting holes at a 45 ° angle for attachment to the gabion frame reinforcements. The plate is reinforced in the production of reinforcements 4 from two profiles 0 8 x 950 mm and provided with grips 5 for easier handling. The board is placed in the vertical face of the gabion inside the basket under the net.

Example 2

In a further exemplary embodiment, a 1000 x 500 mm and 120 mm thick board is used in the gabion face from the outside as an additional lining of an already standing gabion structure. The plate is provided with 4 holes for hanging other elements and additionally attached to the wire structure of the gabion with 2 clips. Two boards are used for the front face of the gabion 1000 x 1000 mm.

Example 3

In yet another embodiment, the slab is used on the exterior face of the building structure as an additional lining. The plate is additionally fixed to the surface of the supporting structure 4 by detachable anchors.

-2GB 27589 U1

Example 4

In another example, the slab is used in the face of the building structure from the outside as a built-in view. The board is permanently connected to the supporting structure during its production.

Industrial applicability

The board according to this technical solution finds its application especially in cladding of building constructions, mainly from gabions.

PROTECTION REQUIREMENTS

Claims (10)

A board for maximizing acoustic attenuation, in particular for cladding of building structures, comprising a rubber granulate, in particular crushed rubber from recycled tires, characterized in that it consists of a composite mixture of mechanically cold crushed rubber with a grain size of 2 to 10 mm 5 to 10% by weight of a textile cord and 5 to 10% by weight of a polyurethane binder, the bulk density of the composite mixture being 500 to 800 kg / m ³ . 2. A sheet according to claim 1, characterized in that its surface is equal to the apparent pore structure of granules, wherein the attenuation characteristics of sound absorption DL _and is 5-6 db at slab thickness minutes. 100 mm. 3. A sheet according to claim 1, characterized in that its front surface is provided with grooves (2) with an active surface equal to two to five times the base gauge plate, the attenuation characteristics _and sound absorption of DL is 8 to 13 db. Board according to claim 3, characterized in that the depth of the grooves (2) is at most 2: 5 in relation to the thickness of the board body (1). A board according to any one of claims 1 to 4, characterized in that the shredded rubber comprises a colored fraction. A board according to any one of claims 1 to 5, characterized in that the board surface is coated with a flame retardant. A board according to any one of claims 1 to 6, characterized in that it is provided with elements (3) for attachment to the face side of the gabion within the wireframe of the gabion structure. A board according to any one of the claims 1 to 6, characterized in that it is provided with further elements for attaching to the visible side of the soundproofing support structure. A board according to any one of claims 1 to 8, characterized in that the body (1) has a length of 1000 mm, a width of 500 mm and a thickness in the range of 100 to 160 mm, preferably 120 mm. Plate according to any one of claims 1 to 9, characterized in that the plate body (1) is provided with reinforcement (4).