JP3088177B2 - Sound control steel plate structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a noise control steel plate structure capable of reducing as much as possible the metal noise generated when going up and down outdoor stairs and the like.

[0002]

2. Description of the Related Art Conventionally, various buildings have been constructed along their outer walls.
An outdoor staircase is used for emergency situations such as a fire.

[0003] These outdoor stairs are usually formed from a number of steel plate steps in consideration of safety and aesthetics from the viewpoint of strength. In each step, a rubber sheet, a synthetic resin sheet, or a mortar board is attached to the surface of the step to prevent corrosion or suppress noise.

[0004]

However, such a steel plate step still has the following problems to be solved.

That is, when a rubber sheet or a synthetic resin sheet is adhered to the surface of a steel plate step, the surface of the step becomes extremely slippery, leading to a fall accident, which is dangerous. In addition, rainwater invades between the step surface and the rubber sheet or the like, which causes an accident of peeling the rubber sheet or the like.

In the case of a mortar board, the slipperiness of the surface of the step can be eliminated, but the adhesion of the steel plate of the mortar board is extremely difficult, and the mortar board is easily cracked and peeled off from the steel plate. Was.

Further, from such a viewpoint, a step in which only a rust-preventive paint is applied to the surface of a steel sheet is widely used, but there is a problem in that shoe noises when ascending and descending resound outside.

[0008] It is an object of the present invention to provide a sound damping steel plate structure that can solve the above-mentioned problems.

[0009]

According to the present invention, there is provided a composite polymer emulsion comprising, on a steel sheet surface, a main material mainly composed of silicon oxide, calcium oxide and iron oxide, and at least an acrylic ester copolymer as a main component. And a sound-absorbing layer made of polymer cement produced by admixing the above.

[0010] The present invention also relates to a method wherein a main material mainly composed of silicon oxide, calcium oxide and iron oxide is provided between two steel sheets.
The present invention relates to a sound-damping steel sheet structure characterized by interposing a sound-absorbing layer made of a polymer cement formed by mixing at least a composite polymer emulsion containing an acrylate copolymer as a main component.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the embodiments shown in the accompanying drawings.

FIGS. 1 to 3 show a case where the sound-damping steel sheet structure according to the present invention is applied to a step B of an outdoor stair A attached to an outer wall of a building or the like.

As shown in FIG. 1, a number of long rectangular plate-shaped steps B are attached at regular intervals in the vertical direction between both side plates C, C of the outdoor staircase A.

Then, as shown in FIG.
Consists of a steel plate 10 forming the body of step B and a sound absorbing layer 11 formed over the entire surface of one side of the steel plate 10.

According to the present invention, as described above, the above-described sound absorbing layer 11 is substantially composed of a main material mainly composed of silicon oxide, calcium oxide and iron oxide, and at least an acrylic ester copolymer as a major component. It is characterized by being formed from a polymer cement produced by admixing a composite polymer emulsion as follows. Specific components and compounding ratios of the polymer cement are shown below.

In this embodiment, the polymer cement is
A mixture produced by mixing a composite polymer emulsion P having the following composition and a base material M is used.

(Composite Polymer Emulsion P) (Example 1) (Example 2) The component weight ratio of the white cement was as follows.

[0018] In addition, mortar obtained by mixing sand and cement can be used in place of the main agent M described above.

Then, the composite polymer emulsion P was put in a stirring vessel, and stirred with a hand mixer while gradually adding the base material M, thereby producing a polymer cement.

The compounding ratio of the polymer cement is desirably 3 to 5 parts by weight of the main agent M based on 1 part by weight of the composite polymer emulsion P. In this embodiment,
1: 4.

The polymer cement thus produced was applied to one surface of the steel sheet 10 by spraying or ironing to form Step B shown in FIG.

In addition, the spraying operation is most efficient for the application operation of the polymer cement, but in this embodiment, the ironing operation is performed with a small loss.

The following experiment was conducted to examine the soundproofing effect of Step B, which embodies the sound-damping steel plate structure according to the present invention.

That is, the steel plate 10 is 3.2 mm thick and 90 mm long.
Step B (invention 1) formed from a rectangular rectangular steel plate having a width of 30 cm and a width of 30 cm, and then applying a polymer cement with a thickness of 2 mm to one side surface of the steel plate 10 to form a sound absorbing layer 11; Step B (Invention 2) in which polymer cement is applied to both sides of the steel sheet 10 with a thickness of 2 mm to form a sound absorbing layer 11 and Step B in which no polymer cement is applied to any of the steel sheets 10 (Conventional product) And made.

After that, when step B was hit with shoes,
In the case of conventional products, even at a distance of 20 m from step B,
I could hear a high metal sound like 'Cancan'.

On the other hand, in the case of the invention 1, when step B was hit with shoes under the same conditions, a 20-m distance from the step B resulted in a low-pitched sound, and in the case of the invention 2, the step B At a distance of 20 meters from, no sound was heard.

As described above, it has been found that the step B to which the sound-insulating steel sheet structure according to the present invention is applied has a remarkable sound absorbing effect or a soundproofing effect as compared with the conventional step.

Further, since the polymer cement has a strong adhesive force, the sound absorbing layer 11 is strongly bonded to the steel plate 10 and does not peel off integrally with the steel plate 10. Moreover, since it has sufficient waterproofness, weather resistance, and rust prevention performance, it is possible to prevent the occurrence of cracks and cracks for many months.

FIG. 3 shows another embodiment in which the noise control steel plate structure according to the present invention is applied to step B of an outdoor staircase.

As shown in the figure, the step B is characterized in that a sound absorbing layer 11 made of polymer cement is interposed between a pair of steel plates 10, 10 in a sandwich shape.

According to such a configuration, as in the above-described embodiment, the sound absorbing layer 11 allows the conventional steps to be performed.
A remarkable sound absorbing effect or soundproofing effect can be exhibited.

Although the above embodiment has been described with reference to the case where the sound damping steel plate structure is applied to the steps of the outdoor stairs, the present invention is not limited to the steps of the outdoor stairs. Needless to say, it can be effectively applied to civil engineering and building structures.

[0033]

As described above, in the sound-insulating steel sheet structure according to the present invention, at least the acrylic ester copolymer is formed on the surface of the steel sheet with a main material mainly composed of silicon oxide, calcium oxide and iron oxide. A sound absorbing layer made of a polymer cement formed by mixing a composite polymer emulsion as a main component is formed. In addition, such a sound-insulating steel sheet structure is characterized in that, between two steel sheets, a composite polymer emulsion mainly containing at least an acrylate ester copolymer is used as a main material mainly containing silicon oxide, calcium oxide, and iron oxide. It is also formed by interposing a sound absorbing layer made of a polymer cement produced by mixing.

With such a configuration, the sound damping steel plate structure can exhibit a remarkable sound absorbing effect or soundproofing effect with respect to the conventional steel plate structure.

Further, since the polymer cement has a strong adhesive force, the sound absorbing layer is strongly integrated with the steel plate and does not peel off. Moreover, since it has sufficient waterproofness, weather resistance, and rust prevention performance, it is possible to prevent the occurrence of cracks and cracks for many months.

[Brief description of the drawings]

FIG. 1 is a perspective view of an outdoor stair to which a sound damping steel plate structure according to the present invention is applied.

FIG. 2 is a cross-sectional view of steps of the outdoor stairs.

FIG. 3 is a cross-sectional view of a step of the outdoor staircase according to another embodiment.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) E04B 1/82-1/90 B32B 15/08 C23D 5/00 C04B 26/06

Claims (2)

(57) [Claims] 1. A polymer cement formed by mixing a composite polymer emulsion mainly composed of at least an acrylate ester copolymer with a main material mainly composed of silicon oxide, calcium oxide and iron oxide on the surface of a steel sheet. A sound-absorbing steel plate structure comprising a sound absorbing layer made of: 2. A composite polymer emulsion composed mainly of silicon oxide, calcium oxide and iron oxide mixed with a composite polymer emulsion composed mainly of at least an acrylate copolymer between two steel sheets. A sound-absorbing steel sheet structure characterized by having a sound absorbing layer made of polymer cement interposed therebetween.