JPH05285914A - Production of elastic interlocking block - Google Patents

Abstract

PURPOSE:To produce an elastic interlocking block enhanced in the bonding strength between an elastic surface layer material and a base layer with high productivity. CONSTITUTION:An elastic interlocking block equipped with a base layer composed of cured matter of mortar or concrete 6 and the elastic surface layer material 8 integrated with the base layer is produced. Uncured mortar or concrete 6 is poured in the molding space 5 of a form 2 to be compacted and an adhesive 7 is applied to the rear of the elastic surface layer material 8 to be brought into contact with the compacted uncured mortar or concrete 6 and, subsequently, the mortar or concrete 6 is cured not only to form the base layer but also to cure the adhesive to bond the elastic surface layer material 8 and the base layer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an elastic interlocking block.

[0002]

2. Description of the Related Art A technique is known in which an elastic surface layer material is fixed to the surface of a base layer made of a cured product of concrete or mortar to make up the surface of the base layer. This is known as an elastic interlocking block and can be used to build pavements, plazas, medians, wharfs, etc. with good appearance. The method of manufacturing such an elastic interlocking block includes the following. (1) Powder rubber and urethane binder are mixed, and the mixture is put into a molding frame and compressed to cure. However, in this method, since it is necessary to keep the mixture in the molding space of the mold until the urethane-based binder is cured, it is naturally impossible to move the mold for a long time. For this reason, a large number of molds are required when the blocks are produced, the operating rate of the molds is low, and a large space is required to install the molds. Therefore, this method is not suitable for mass production.

(2) A concrete base material is molded and an elastic surface layer material is adhered to the concrete base material. However, in this method, the green concrete is cured and cured, and then the adhesive is cured. Then, both the curing of the green concrete and the curing of the adhesive take a considerable amount of time. For this reason,
Since it requires a lot of working time and space, the manufacturing cost is high. (3) Providing irregularities on the back surface side of the elastic surface material, pouring fresh concrete into the form, placing the back surface side of the elastic surface material on the fresh concrete, and hardening the fresh concrete. The elastic surface layer material is fixed by the anchor effect of the unevenness. However, in this method, since the elastic surface material and the concrete are physically bonded, since the thermal expansion coefficients of the two are different, the elastic surface material easily peels off when used outdoors, making it difficult to use for a long period of time. .. (4) Powder rubber, urethane-based binder, etc. are mixed, the mixture is compression-molded with a molding die, and fresh concrete is poured onto the mixture to mold it. However, with this method, it is very difficult to level the surface of the mixture in the molding die. Moreover, the mold cannot be moved for a long time until the urethane-based binder is cured after the compression molding. Therefore, it has the same problem as described in (1).

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of manufacturing an elastic interlocking block which has high productivity and can increase the adhesive force between the elastic surface layer material and the base layer.

[0005]

The present invention is a method for producing an elastic interlocking block comprising a base layer made of a cured product of mortar or concrete, and an elastic surface layer material integrated with the base layer, The uncured mortar or concrete is filled in the molding space of the mold, and the mortar or concrete is fastened, an adhesive is attached to the back surface of the elastic surface layer material, and the fastened uncured mortar or concrete is fastened. A method for manufacturing an elastic interlocking block, which comprises contacting an adhesive and then curing mortar or concrete to form the base layer and curing the adhesive to adhere the elastic surface material and the base layer Is.

[0006]

1 to 3 are schematic sectional views for explaining an embodiment of the present invention. The mold 2 is installed on the molding table 1. The mold 2 has a plurality of molding spaces 5 formed therein. The planar shape of the molding space 5 can be, for example, a square, a rectangle, a rhombus, a parallelogram, a regular triangle, a regular hexagon, or the like.

Then, each molding space 5 is filled with uncured mortar or concrete 6. Punches 3 are installed above each molding space 5, and each punch 3 is attached to a shaft 4. Each punch 3 is lowered as shown in FIG. 1, is housed in each molding space 5, and mortar or concrete 6 is pressurized. Then, the uncured mortar or concrete 6 is fastened with a vibrator or the like. The mortar or concrete 6 itself used here has a very low slump value, which is currently used in the manufacture of interlocking blocks.

Next, each punch 3 is raised. on the other hand,
The adhesive 7 is applied to the back surface of the elastic surface material 8 shown in FIG. 2, each elastic surface material is housed in the molding space 5, and the uncured adhesive 7 is brought into contact with the uncured mortar or concrete 6. In this way, the elastic surface layer material 8, the uncured adhesive 7,
Laminate uncured mortar or concrete 6.

As the material of the elastic surface layer material 8, rubber industry,
Any elastic body commonly used in the plastics industry can be used. For example, as the main polymer, PV
C, CPE, butyl rubber, RB, isoprene rubber, polyurethane, and mixtures thereof can be used. Examples of the method for molding the elastic surface layer material 8 include die molding and calender molding, and vulcanization is performed as necessary. A molded product obtained by molding vulcanized rubber powder such as tire powder in a binder can also be used. Further, although the elastic surface layer material 8 itself is shown as a single structure in the drawing, it may be separated into a surface decorative layer and a back surface layer. In this case, the surface decorative layer has a spiral pattern, a striped pattern,
A sea-island pattern may be provided.

The adhesive 7 is particularly preferably an epoxy adhesive or a urethane adhesive. These are mainly two-component, but one-component urethane-based adhesives can be used. The viscosity of the adhesive is preferably 1000 cps or more, and one having thixotropy is preferable.

Next, as shown in FIG. 3, the mold 2 is raised and each molded product is removed from the mold. Then, each molded body is placed on the curing table 9, transferred to another place, and the mortar or concrete 6 is cured and cured, and the adhesive 7
Cure.

As described above, the present inventor laminates the raw mortar or raw concrete 6 and the elastic surface layer material 8 with the adhesive 7 interposed therebetween, and cures and cures the mortar or concrete 6 and the adhesive 7 It has been found that by curing by reaction, both curing proceed sufficiently, and a good quality elastic interlocking block can be manufactured. Thereby, after curing the mortar or concrete, the elastic surface layer material is adhered to the cured product, and compared with the conventional method of reacting and curing the adhesive, the time required for manufacturing the elastic interlocking block is significantly shortened, The time and effort of the work are reduced, and the manufacturing cost is significantly reduced.

Surprisingly, when the hardening of the adhesive 7 and the hardening of the mortar or concrete 6 are simultaneously advanced,
It was found that the adhesive force between the base layer and the elastic surface layer material 8 was rather improved. The reason for this is not clear, but the reactive groups of the molecules of the adhesive 7 react with components such as fresh concrete,
It is thought that this is because of the anchor effect of the adhesive.

Also, in this example, after the mortar or concrete 6 is completely fastened, the molded body is released from the mold. And
The urethane type binder or the like is not compression molded in the mold. Therefore, since the mold is not blocked for a long time due to the compression molding of the elastic material, the operation rate of the mold is improved and the productivity of the elastic interlocking block is increased.

Further specific examples will be described. Mortar with a low slump value was kneaded, charged into the molding space 5 of the mold 2 and fastened as described above. Then, an elastic interlocking block was manufactured according to the method shown in FIGS. However, as the elastic surface material 8,
A vulcanized rubber tile was used, and the surface of this vulcanized rubber tile was provided with an uneven pattern for preventing slippage. A two-component epoxy adhesive was used as the adhesive. The mortar was cured for 2 days. With respect to the block thus obtained, the adhesive strength between the elastic surface layer material 8 and the mortar base layer was measured and found to be 5.0 kg / inch (180 ° peel strength).

On the other hand, a block was manufactured using the same raw mortar, adhesive and elastic surface layer material as described above. First, raw mortar was poured into the molding space of the mold to be molded, cured and cured to obtain a mortar base layer. Then, the above adhesive was applied to the back surface of the elastic surface material 8, the elastic surface material 8 was attached to the mortar base layer, and the adhesive was cured. When the adhesive strength between the elastic surface layer material 8 and the mortar base layer was measured for this elastic interlocking block, it was 4.2 kg / inch (180 ° peel strength).

[0017]

As described above, according to the present invention, since the mortar or concrete is hardened to form the base layer and the adhesive is hardened to bond the elastic surface material and the base layer, Compared with the method, the time required to manufacture the elastic interlocking block is significantly shortened, the labor required for the work is reduced, and the manufacturing cost is significantly reduced. Moreover, the adhesive strength between the elastic surface layer material and the base layer is increased as compared with the conventional one.

After the mortar or concrete is fastened, the mortar or concrete can be demolded from the mold and cured. After this mold release, the next mortar or concrete can be poured into the molding space of the mold. Therefore, unlike the conventional method in which the elastic polymer material is compression-molded, the mold is not blocked for a long time, so that the operation rate of the mold is improved and the productivity of the elastic interlocking block is increased.

[Brief description of drawings]

FIG. 1 is a sectional view schematically showing a state in which each molding space 5 of a mold 2 is filled with mortar or concrete 6.

FIG. 2 is a cross-sectional view schematically showing a state in which an elastic surface layer material 8 is laminated on uncured mortar or concrete 6 that has been fastened.

FIG. 3 is a sectional view schematically showing a state where the mortar or concrete 6 and the elastic surface layer material 8 are removed from the mold 2.

[Explanation of symbols]

 2 Formwork 5 Molding space 6 Unhardened mortar or concrete 7 Adhesive 8 Elastic surface layer material 9 Curing stand

Claims (2)

[Claims] 1. A method for producing an elastic interlocking block comprising a base layer made of a cured product of mortar or concrete and an elastic surface layer material integrated with the base layer, the method comprising: uncuring the molding space of a mold. Of mortar or concrete is filled, the mortar or concrete is fastened, an adhesive is attached to the back surface of the elastic surface material, the uncured mortar or concrete that is fastened is contacted with the adhesive, and then the mortar Alternatively, a method of manufacturing an elastic interlocking block, in which concrete is hardened to form the base layer and the adhesive is hardened to bond the elastic surface layer material and the base layer together. 2. The method for manufacturing an elastic interlocking block according to claim 1, wherein the adhesive is an epoxy adhesive or a urethane adhesive.