JPH08311824A - Soundproof wall - Google Patents

Abstract

PURPOSE: To improve the soundproof property and reduce the manufacturing cost by mixing pearlite and cement with an admixture on the surface of a kiln substrate board at a specific percentage content of the admixture against cement. CONSTITUTION: A kiln substrate board 12 having a projection 14 on the upper end side, a recess 15 couplable with the projection 14 on the lower end side, and wall sections 16 near the upper end and the lower end of the surface is formed. The percentage content of an admixture made of chloroprene rubber against cement is set to 2.6wt.% or below, and pearlite and cement are mixed with the admixture to prepare the raw material of a sound absorbing material 13. The raw material of the sound absorbing material 13 is filled between the wall sections 16 of the substrate board 12 and hardened, and the substrate board 12 and the sound absorbing material 13 are integrated to form a soundproof wall 11. The manufacturing cost can be reduced as compared with the conventional soundproof wall provided with a sound absorbing material such as glass wool in a frame formed with a metal plate, and the deterioration due to wind, rain, and solar radiation can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, highways,
The present invention relates to a soundproof wall used as a place where noise such as railways occurs or as a wall of a building such as a house.

[0002]

2. Description of the Related Art Conventionally, a soundproof wall has been used for a place where noise is generated on a highway, a railroad or the like or a wall of a building such as a house. As this soundproof wall, as shown in FIG. 5, a sound absorbing material 2 made of glass wool, rock wool or the like is arranged in a frame body 1 formed of a metal plate,
It is known that the frame member 1 is provided with a plate member 3 made of a metal plate having slits or holes formed on the side surface thereof.

[0003]

By the way, although this kind of soundproof wall is often used outdoors, in the soundproof wall, the frame body 1 made of a metal plate is corroded, or The sound-absorbing material 2 made of glass wool or rock wool that is arranged changes its quality by absorbing moisture, absorbing water, or receiving sunlight.
There is a problem that the sound absorbing property deteriorates and the sound absorbing property significantly decreases. In addition, since this soundproof wall has a large number of parts and has a complicated structure and shape, there is a problem that the manufacturing work thereof requires a great deal of labor and a manufacturing cost increases. Further, when an aluminum plate material is used as the metal plate forming the frame body 1, there is a problem that the cost is further increased. Further, since the glass wool and rock wool used as the sound absorbing material 2 disposed inside may be scattered, it was not suitable for indoor use.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a soundproof wall having high soundproofing properties and reduced manufacturing cost.

[0005]

In order to achieve the above object, the soundproof wall according to claim 1 is a soundproof wall installed around a noise source or the like, and is a ceramic industry formed by extrusion molding in advance. A sound absorbing material formed by mixing pearlite and cement with an admixture is integrally provided on the surface of the base plate. A soundproof wall according to a second aspect is the soundproof wall according to the first aspect, characterized in that a mixing ratio of the admixture to the cement is 2.6% by weight or less. A soundproof wall according to a third aspect is the soundproof wall according to the first or second aspect, wherein chloroprene rubber is used as the admixture.

A soundproof wall according to a fourth aspect is the soundproof wall according to any one of the first to third aspects, characterized in that a dovetail groove is formed in advance on the surface of the ceramic base plate. . The soundproof wall according to claim 5 is the soundproof wall according to any one of claims 1 to 4, wherein the surface of the ceramic base plate is preliminarily coated with a base agent containing the admixture. It has a feature. A soundproof wall according to a sixth aspect is the soundproof wall according to any one of the first to fifth aspects, characterized in that an outer peripheral surface of the sound absorbing material is coated with a paint.

[0007]

According to the soundproof wall of the present invention, since the sound absorbing material formed by mixing the aggregate made of cement and the pearlite is used, the structure is simplified and the manufacturing work is simplified. Is planned. Further, since the ceramic base plate used as the wall body is integrally provided with the sound absorbing material, the installation work can be facilitated. According to the soundproof wall of the second aspect, since the amount of the expensive admixture used is small, the cost can be reduced. According to the soundproof wall of the third aspect, the cement and the pearlite are integrally molded by the chloroprene rubber in a well mixed state.

According to the soundproof wall of the fourth aspect, the dovetail groove formed on the surface of the ceramic base plate ensures reliable integration with the sound absorbing material. According to the soundproof wall of claim 5,
Since the base material applied to the ceramic-based base plate contains the admixture, the sound absorbing material can be more reliably integrated with the base plate. According to the soundproof wall of the sixth aspect, the deterioration of the sound absorbing material is reduced by the coating material applied to the outer peripheral surface of the sound absorbing material.

[0009]

Embodiments of the soundproof wall of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 11 is a soundproof wall.
This soundproof wall is composed of a ceramic base plate 12 and a sound absorbing material 13 integrally provided on the surface of the base plate 12, and the side surface provided with the sound absorbing material 13 is connected to the noise source side. It will be installed towards. The base plate 12 has a convex portion 14 formed on the upper end side and the convex portion 14 on the lower end side.
A recessed portion 15 that can be fitted to is formed. Then, the base plate 1 of the soundproof wall 11 installed on the upper side of the base plate 1 of the soundproof wall 11 installed on the lower side to the convex portion 14 formed on the upper end side of the base plate 12 of the soundproof wall 11.
The soundproof walls 11 are vertically joined by fitting the recesses 15 formed on the lower end side of the two.

On the surface of the base plate 12, wall portions 16 are formed near the upper end and near the lower end, respectively, and the sound absorbing material 13 is integrated between the wall portions 16 so as to be integrated. There is. The sound absorbing material 13 is formed by mixing pearlite and cement with an admixture, and the pearlite is a physically and chemically stable material made of a hard and lightweight material obtained by crushing obsidian. As the admixture, chloroprene rubber having excellent weather resistance, chemical resistance, impact resistance, water absorption resistance, water permeability resistance, and good adhesive strength is used. The base plate 12 has a plurality of through holes 17 formed at intervals in the width direction over the longitudinal direction, thereby achieving weight reduction and material cost reduction.

When manufacturing the soundproof wall 11 having the above structure,
First, a base material containing silica, perlite and cement containing chloroprene rubber is uniformly applied to the surface of the base plate 12 formed by extrusion molding as shown in FIG. Next, to the base plate 12, an appropriate amount of an admixture composed of pearlite, cement and chloroprene rubber,
The material of the sound absorbing material 13 mixed so that the admixture is spread over the whole is poured as shown in FIG. 3 to cure the sound absorbing material 13.
After curing, the outer peripheral surface of the sound absorbing material 13 is painted to cover the outer peripheral surface of the sound absorbing material 13 to complete the soundproof wall 11. In addition, sound absorbing material 1
When placing 3, the molds are installed on both ends of the soundproof wall 11.

[Experimental Example] Here, five sound-absorbing materials 13 having different mixing ratios of cement and an admixture were made on a trial basis, the bending strength of each was measured, and the surface condition was observed. The results are shown in Table 1.

[0013]

[Table 1]

(Experimental Results) Sample 1 It has a very good bending strength and a very good surface condition. Sample 2 The bending strength was lowered and the surface condition was not good. Sample 3 Prototype No. Like the sound absorbing material of No. 2, good bending strength cannot be obtained, and the surface condition is not good. Sample 4 Sufficient bending strength and good surface condition. Sample No. 5 has a larger bending strength and is a prototype No. Similar to 4, the surface condition is good.

As can be seen from the above experimental results, the sound absorbing materials 13 of Sample 1, Sample 4 and Sample 5 have sufficient bending strength and good surface condition, and all of them can be used as products. It was confirmed. In particular, it was confirmed that Sample 1 has a larger bending strength and a better surface condition than the others, but it uses a large amount of an expensive admixture, which causes a problem of increased manufacturing cost. Therefore, it was confirmed that the samples 4 and 5 having a sufficient bending strength and a good surface state at low cost are optimal as the sound absorbing material 13. That is, it is desirable to mold the sound absorbing material 13 with the mixing ratio of the admixture to cement being 2.6% by weight or less.

As described above, according to the soundproof wall 11 of this embodiment, the lightweight sound absorbing material 13 which is made by mixing pearlite and cement with the admixture and has excellent sound absorbing property and durability is used in the ceramic system. Since it is integrally molded with the base plate 12, compared with the conventional soundproof wall in which the sound absorbing material 2 such as glass wool or rock wool is provided in the frame body 1 formed of the metal plate, the labor required for the manufacturing work is significantly increased. In addition, it is possible to reduce the deterioration due to wind and rain, solar radiation, etc., and to improve the handleability on site. Further, since it does not scatter unlike glass wool or rock wool, it can be used satisfactorily indoors.
Further, by coating the outer peripheral surface of the sound absorbing material 13, the deterioration of the sound absorbing material 13 can be further reduced. Moreover, since the base material containing the admixture is applied to the surface of the base plate 12, the sound absorbing material 13 and the base plate 12 can be molded in a surely integrated state. And from the above experimental results, the mixing ratio of the admixture to cement,
By using the sound absorbing material 13 in an amount of 2.6% by weight or less, it is possible to obtain the soundproof wall 11 provided with the sound absorbing material 13 having a sufficient bending strength and a good surface condition at an extremely low cost.

In the above embodiment, the wall portions 16 projecting toward the front side near the upper end and near the lower end of the base plate 12, respectively.
Was formed, and the sound absorbing material 13 was placed between these wall portions 16, but a form was installed around the base plate 12 without the wall portion 16,
The sound absorbing material 13 may be cast in the mold to be integrated with the base plate 12. Further, as shown in FIG. 4, by forming a plurality of dovetail grooves 21 on the surface of the base plate 12,
Further reliable integration of the sound absorbing material 13 and the base plate 12 can be achieved.

[0018]

As described above, according to the soundproof wall of the present invention, the following effects can be obtained. According to the soundproof wall of claim 1, since the lightweight sound absorbing material in which pearlite and cement are mixed by the admixture is used and which has excellent sound absorbing property and durability, the sound absorbing wall is formed in the frame formed by the metal plate. Compared with conventional sound barriers that have glass wool, rock wool, etc. as sound absorbing materials, the labor required for manufacturing work can be significantly reduced and the manufacturing cost can be reduced, and the deterioration due to wind and rain or solar radiation can be reduced. It is possible to improve the handling property in the. Further, since it does not scatter unlike glass wool or rock wool, it can be used satisfactorily indoors. Further, the ceramic base plate integrally provided with the sound-absorbing material can also secure the reliable strength, and the base plate can further improve the sound insulation. According to the soundproof wall of the second aspect, it is possible to provide a soundproof wall provided with a sound absorbing material having a sufficient bending strength and a good surface condition at an extremely low cost. According to the soundproof wall of claim 3,
With the chloroprene rubber used as the admixture, pearlite and cement can be reliably molded into an integrated state.

According to the soundproof wall of the fourth aspect, since the sound absorbing material bites into the dovetail groove of the base plate, it can be surely integrated with the base plate. According to the soundproof wall of the fifth aspect, since the surface of the base material containing the admixture is applied to the base plate, it is possible to surely integrate the base plate and the sound absorbing material. According to the soundproof wall of the sixth aspect, the deterioration of the sound absorbing material can be reduced by the paint on the outer peripheral surface of the sound absorbing material.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of vertically joined soundproof walls for explaining the structure and structure of the soundproof wall according to an embodiment of the present invention.

FIG. 2 is a perspective view of the base plate for explaining the shape of the base plate and the procedure for manufacturing the sound barrier constituting the soundproof wall according to the embodiment of the present invention.

FIG. 3 is a perspective view of the soundproof wall for explaining the procedure for manufacturing the soundproof wall according to the embodiment of the present invention.

FIG. 4 is a cross-sectional view of a soundproof wall for explaining the structure and structure of the soundproof wall according to another embodiment of the present invention.

FIG. 5 is a cross-sectional view of a conventional soundproof wall for explaining the configuration and structure of the conventional soundproof wall.

[Explanation of symbols]

 11 Soundproof Wall 12 Ceramic-Based Base Plate 13 Sound Absorbing Material 21 Dovetail

Claims (6)

[Claims] 1. A soundproof wall installed around a noise generating source or the like, which is a sound absorbing wall formed by mixing pearlite and cement with an admixture on the surface of a ceramics base plate formed by extrusion molding in advance. A soundproof wall characterized by being provided integrally with materials. 2. The mixing ratio of the admixture to the cement is 2.6% by weight or less.
Soundproof wall as described. 3. The soundproof wall according to claim 1, wherein chloroprene rubber is used as the admixture. 4. The soundproof wall according to claim 1, wherein a dovetail groove is formed in advance on the surface of the ceramic base plate. 5. The soundproof wall according to claim 1, wherein a surface of the ceramic base plate is coated with a base agent containing the admixture in advance. 6. The soundproof wall according to claim 1, wherein an outer peripheral surface of the sound absorbing material is coated with a paint.