JP3012837U - Decorative formwork material - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to increase the durability of the concrete structure by making the surface water of the concrete dense by discharging the excess water in the concrete by making it water permeable. Further, by providing air permeability, it is possible to provide a clean surface finish with less bubble avatars, cool reaction heat of concrete, and prevent cracking. [Structure] Innumerable wood fibers (1) arranged in the direction along the surface of the decorative form material are pressed together during molding together with a thermosetting resin as a binder, and between the wood fibers (1). , The resin portion (2) and a large number of air holes (3) are formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a decorative frame material having breathability and water permeability, which is used when constructing a retaining wall or the like provided on a steep slope in a residential land development site or a steep slope collapse prevention site.

[0002]

[Prior art]

 Most of the conventional decorative frame materials are made of Styrofoam, etc., and have no water permeability or air permeability.

[0003]

[Problems to be solved by the device]

 When concrete is struck using the above-mentioned conventional decorative form material, the water content of the decorative form material is not so high that excess water overflows into the concrete, and the constructed concrete has a rough surface layer structure and a concrete structure. There was a drawback that the durability of the whole thing was inferior. In addition, since the decorative form material has no air permeability, air bubbles can be formed on the surface of the concrete that has been placed, so that the surface of the concrete structure has a drawback that it does not look good and is finished. Furthermore, the reaction heat during hardening of the concrete could not be cooled, so cracks could occur in the concrete.

The present invention has been made to eliminate the above-mentioned drawbacks, and a large number of small air holes are provided in a decorative form material in a distributed manner so that the excess water in concrete can be obtained. The concrete surface layer structure can be made more dense by discharging air to the outside, and the durability of the concrete structure can be increased.By providing ventilation, a clean surface finish with few bubble avatars can be obtained. Further, it is an object of the present invention to provide a decorative form material that can cool the reaction heat of concrete due to the cooling effect of the water-retaining member due to the water retention and prevent cracking.

[0005]

Means for Solving the Problems The decorative form material of the present invention is a decorative form material, and the forming mold is made of wood fiber, plant fiber, chemical fiber, glass wool, non-woven fabric, or two types thereof. It is a decorative frame material in which a fluffy felt-like member in which a resin powder as a binder is mixed is sandwiched and molded in the above mixture, and a large number of air small holes are distributed.

The makeup frame material of the present invention is a makeup frame material, and the molding die is made of wood fiber, plant fiber, chemical fiber, glass wool, non-woven fabric, or two or more of these. A fluffy felt-like member in which a resin powder as a binder is mixed with a mixture, and a member having water retention property are overlapped and sandwiched and molded, and a base material in which a large number of air pores are distributed, and a concrete of the base material This is a decorative frame material in which the above-mentioned water-retaining member on the side opposite to the driving surface is integrally attached.

[0007]

[Action]

 In the decorative form material having the above structure, when concrete is struck, air bubbles in the concrete and excess water pass through the small air holes of the decorative form material and go out. In the case of a decorative form material in which a water-retaining member is attached to the surface opposite to the concrete casting surface, air bubbles and excess water pass through the small air holes of the base material, and the water-retaining member side Come out to. Then, the surplus water is retained in the member having the water retention property. This retained excess water cools the reaction heat of the concrete when it hardens.

[0008] As a result of the above, air bubbles and excess water in and on the concrete are eliminated, a clean finished surface with few bubble avatars is formed on the surface of the concrete to be built, and the surface layer structure of the cast concrete is By becoming dense, the durability of concrete structures is greatly improved. Furthermore, it is possible to prevent cracking caused by the reaction heat of concrete.

[0009]

【Example】

 A plurality of embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partially enlarged cross-sectional view of a first embodiment of a decorative form material that is thermoformed by sandwiching a fluffy felt-like member obtained by mixing wood fiber with a thermosetting resin powder as a binder into a thermoforming die. Is. A myriad of wood fibers (1) arranged in the direction along the surface of the decorative form material are pressed together with the thermosetting resin as a binder during molding, and the resin part is placed between the wood fibers (1). Minutes (2) and many small air holes (3) are formed.

An appropriate ratio is required for the size of the air small holes (3) and the ratio of the volume to the whole. In other words, the proportion of air pores (3) must be large enough for the decorative frame material to exhibit sufficient air permeability and water permeability, but the water permeability is too large to pass the cement portion. It is necessary that the proportion of the air small holes (3) does not become too large so that the rigidity of the decorative form material is not weakened. Therefore, it is necessary to appropriately set the molding pressure of the molding die during the thermoforming of the cosmetic mold material. The molding pressure of the present invention was set to about 20 kg / cm ² , but any of molding materials such as wood fiber, plant fiber, chemical fiber, glass wool, non-woven fabric, or a combination of two or more of these, or However, the molding pressure may change depending on the basis weight.

Although the wood fiber is used in the first embodiment, any of wood fiber, vegetable fiber, chemical fiber, glass wool, non-woven fabric, or a mixture of two or more of these may be used as the material. Although the thermosetting resin powder was used as the resin powder as the binder, a thermoplastic resin powder may be used instead. In that case, the cooling type is used.

FIG. 2 is a partially enlarged cross-sectional view showing a second embodiment, in which a fluffy felt-like member obtained by mixing wood fiber with a thermosetting resin powder as a binder is used as a member having water retention property. The figure shows a decorative mold material in which non-woven fabrics are stacked, sandwiched between thermoforming molds, and thermoformed. On the surface of the decorative frame material (4) opposite to the concrete pouring surface, a water-retaining non-woven fabric (5) is attached at the same time as molding. The compressed and solidified base material (6) mainly composed of wood fibers has the same structure as that of the first embodiment described above, and is provided with a large number of air holes distributed therein.

The material of the base material (6) of the second embodiment may be another material as in the first embodiment, and the resin powder as a binder may be the thermoplastic resin powder as in the first embodiment. Well, in this case, cooling molding is performed. Instead of the non-woven fabric (5) having water retention property, a material other than the non-woven fabric such as felt may be used.

As in the first and second embodiments, it is possible to dispose air small holes in a distributed manner so as to have water permeability and air permeability and to attach a member having water retention property to a decorative frame material. It can also be applied to other general formwork materials.

[0015]

[Effect of device]

 According to this invention, since the decorative form material has water permeability and air permeability, it is possible to reduce excess water and air bubbles in the placed concrete and on the surface, and to make the concrete surface layer structure dense and the concrete structure. Durability is improved. In addition, the air bubble avatar on the surface of the concrete structure can be significantly reduced and the surface can be finished cleanly. When a water-retaining member is attached to a decorative form material, the cooling effect of water retention can reduce the reaction heat during concrete hardening, and can prevent concrete from cracking. Play.

[Brief description of drawings]

FIG. 1 is a partially enlarged sectional view showing a first embodiment of the present invention.

FIG. 2 is a partially enlarged sectional view showing a second embodiment of the present invention.

[Explanation of symbols]

 1 Wood fiber 2 Resin part 3 Small air holes 4 Decorative frame material 5 Non-woven fabric with water retention 6 Base material

Claims (2)

[Scope of utility model registration request] 1. A decorative form material, wherein a resin powder as a binder is mixed with a molding die of wood fiber, plant fiber, chemical fiber, glass wool, non-woven fabric, or a mixture of two or more of these. A decorative frame material, characterized in that it is formed by sandwiching and forming a repellent felt-like member, and a large number of air holes are distributed. 2. A decorative form material, which comprises a molding die in which resin powder as a binder is mixed with wood fiber, plant fiber, chemical fiber, glass wool, non-woven fabric, or a mixture of two or more of these. A fluffy felt-like member and a member having water retention property are overlapped and sandwiched and molded, and a base material in which a large number of small air holes are distributed, and the water retention surface of the base material opposite to the concrete pouring surface A decorative frame material, which is formed by integrally adhering a flexible member.