JPS6058321B2 - elastic pavement - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elastic pavement body that is optimal as a safety pavement for athletic facilities and the like.

Conventionally, elastic pavement using an elastic polymer has been produced by pasting a sheet of elastic polymer onto a base, or by applying a liquid polymer elastic material onto a base and solidifying it. There are two types of on-site construction methods.

According to the former construction method, it is possible to obtain a relatively strong elastic pavement, but seams are created between the sheets, which not only deteriorates the appearance but also makes it easy to break at the seams. Furthermore, according to the latter construction method, the toughness is often inferior until it is completely dry due to rainfall before and after construction.

In view of the above circumstances, the present invention has sufficient toughness and appropriate elasticity, and is also capable of eliminating the risk of breakage by forming the entire structure on-site and eliminating seams. The purpose is to provide an elastic pavement body that can be used with a base such as smooth concrete, mortar, asphalt pavement, or wooden floor,
A strong nonwoven fabric layer of synthetic fibers with a large porosity attached to the base with adhesive is impregnated with a polymeric elastomer latex compound or a liquid polymeric material that becomes an elastic material after curing at the construction site and solidified. An elastic pavement body characterized in that it is formed from a dried elastic layer.

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the figures.

The nonwoven fabric layer 1 of the elastic pavement body according to the present invention is formed of a nonwoven fabric pasted with an adhesive onto a base 2 such as concrete, mortar, asphalt pavement, or a wooden floor.

It is desirable that the upper surface 2a of the base is sufficiently smooth to provide a smooth finished surface of the elastic pavement. The above-mentioned pasting adhesive may be any commonly used adhesive, but a rubber-based solvent adhesive is most suitable in consideration of water resistance after installation. The nonwoven fabric used in the present invention is a polymeric elastomer latex compound or a liquid polymeric material 3 that becomes an elastic material after curing (hereinafter, these two are collectively referred to as polymeric elastomer).
It is strong so that it does not sag when impregnated with the material, and has good permeability so that the polymer elastic body 3 is impregnated throughout.
In particular, when a latex compound is used for impregnation, it is desirable that it has good water resistance. Therefore, as a nonwoven fabric, the average fiber thickness is 3 deniers or more, the apparent specific gravity is 0.03~0.05gr/Cc, and the thickness is 2~0.
A non-woven fabric made of synthetic fibers such as polyester or nylon with a grain size of about 5 is desirable. An elastic layer 4 forming an elastic pavement body together with the base 2 includes a polymeric elastic material 3 on the nonwoven fabric layer 1.
It is formed by impregnating, solidifying, and drying.

The polymeric elastomer 3 may be a polymeric elastomer latex compound such as natural rubber, styrene-butadiene rubber, chloroprene rubber, acrylonitrile-butadiene rubber, polyacrylate, or a modified latex compound thereof, or a polymeric elastomer latex compound such as polyurethane. A liquid polymeric material is used that hardens to become an elastic body. These polymeric elastomers 3 are used as a compound containing fillers, plasticizers, stabilizers, crosslinking agents, colorants, viscosity modifiers, etc., as required. In particular, when used as a latex type, water resistance immediately after construction can be improved by adding a gelling agent or a gelling aid to the composition so that it gels and solidifies immediately after impregnation. Note that the method of impregnating the nonwoven fabric layer 1 with the polymer elastic body 3 is not specified, but common methods include using a metal trowel, rubber rake, and spraying. The elastic layer 4 may be formed by impregnating the adhesion surface so as to sufficiently penetrate the adhesive surface, solidifying and drying the adhesive. The elastic pavement body according to the present invention is obtained by impregnating the nonwoven fabric layer 1 with the polymer elastic body 3, solidifying it, and drying it as described above. Although the elastic layer 4 alone can withstand use, if necessary, a polymer elastomer latex compound or a liquid polymer material that becomes an elastic body after curing may be further applied to the surface of the elastic layer 4 to form a surface layer. 5 may be formed to make the surface smoother.

In the elastic pavement according to the present invention, a nonwoven fabric layer made of strong and high-porosity synthetic fibers adhered to a base is impregnated with a polymeric elastomer latex compound or a liquid polymeric material that becomes an elastic material after curing. Since it has an elastic layer formed by solidifying and drying, it has both toughness and elasticity, and is comfortable to step on and safe even if it falls.

That is, in the elastic layer of the present invention, the nonwoven fabric layer and the polymer elastic body are not simply laminated, but the nonwoven fabric is integrated into the completely solidified polymer elastic body.
Therefore, the nonwoven fabric serves as a reinforcing material for the elastic polymer, improving the strength of the elastic layer and making it easier to apply the liquid elastic polymer to a constant thickness.・Also, since the polymer elastic body and nonwoven fabric are integrated, there is no risk of delamination. Furthermore, since the entire surface can be paved in one piece, there are no seams, which is desirable and there is no risk of damage. Therefore, it is ideal as a safety pavement for sports facilities such as tennis courts, volleyball courts, and gymnasium floors, rooftops of kindergartens and elementary schools, and athletic facilities such as schoolyards. Examples of the present invention will be shown below.

Example 1 A cloprene rubber-based solvent glue was applied to a smooth asphalt pavement with an average fiber size of 5 deniers and an apparent specific gravity of approximately 0.
．． A nonwoven fabric made of polyester fibers having a thickness of approximately 2.5 m and having a thickness of 04gr/Ccl was attached.

A mixture consisting of a latex compound blended in the ratio shown in Table 1 and a gelling agent in an amount that will gel in about 3 to 1 hour was applied to the above nonwoven fabric attached to an asphalt pavement. Impregnate using a metal trowel at a ratio of 2.3k9, smooth the surface as much as possible, solidify and dry it to about 2.3k9. Created a thick elastic layer. On top of this, a mixture of the latex mixture shown in Table 1 with cold water sand and colored pigments was applied with a rubber rake to make the surface smooth, and then a mixture of the latex mixture of Table 1 with added colored pigments was applied with a rubber rake. was applied several times to form a surface layer with a thickness of about 1]m on the elastic layer, resulting in an elastic pavement with a total thickness of about 3T1n. This elastic pavement is
With a surface hardness (JIS) of approximately 60, it is non-slip, comfortable to step on, has moderate elasticity, and is less dangerous in the event of falls, making it ideal as a safety pavement for tennis courts, other sports facilities, and playgrounds. . Example 2 Non-tar urethane for waterproofing (Watite U.N.A.)
1 part by weight of the main agent and 2 parts by weight of the curing agent were uniformly mixed.

This mixture was applied to the same nonwoven fabric as in Example 1, which was pasted onto a substrate in the same manner as in Example 1, and was sufficiently impregnated with 3K9 per 1 d using a metal trowel, and after smoothing the surface, it was cured. About 2 thick? An elastic layer was formed. After this elastic layer is sufficiently hardened and cured, a mixture of the mixture shown in Table 1 with colored pigments and cold water sand is applied using a rubber rake to smooth the surface, and then a mixture of color pigments and cold water sand is added to the mixture of Table 1 to make the surface smooth. The mixture was coated several times to form an elastic pavement with a smooth surface and a total thickness of approximately 3T1n. This elastic pavement has a surface hardness (JIS) of approximately 6.
0, it does not slip, is comfortable to step on, has appropriate elasticity, and has little risk of falling, making it ideal as a safety pavement for tennis courts, other sports facilities, and playgrounds.

[Brief explanation of the drawing]

FIGS. 1 and 2 are conceptual cross-sectional views showing an embodiment of the elastic pavement body according to the present invention. 1...Nonwoven fabric layer, 2...Base, 3...
...Elastic polymer, 4...Elastic layer, 5...
····surface.

Claims (1)

[Scope of Claims] 1. A base and an apparent specific gravity 0.03 to 0.03 attached to the base.
A non-woven fabric layer of strong synthetic fibers of 0.05 gr/cc and an average fiber thickness of 3 denier or more is impregnated and solidified at the construction site with a polymeric elastomer latex compound or a liquid polymeric material that becomes an elastic material after curing. An elastic pavement body characterized by being formed from a dried elastic layer. 2. The elastic pavement according to claim 1, further comprising a surface layer made of a polymeric elastomer latex compound or a liquid polymeric material that becomes an elastic material after curing, on the elastic layer.