JPH0571221U - Structural members for civil engineering and construction - Google Patents

Abstract

(57) [Summary] [Structure] A structural member 1 for civil engineering and construction, comprising a layer of hardened cement material 3 containing expanded particles 4 laminated on at least one side of a foamed resin block 2, the hardened material layer 3 of cement. Is a structural member 1 for civil engineering and construction, wherein an upper surface 3 a of a cement composition containing expanded particles 4 when cured is laminated as a laminated surface with the foamed resin block 2. [Effect] Since the hardened cement material layer 3 containing the expanded particles 4 is integrated with the foamed resin block 2 in advance, it is possible to construct the floor portion and the wall portion of the structure such as the platform by the foamed resin block stacking method very easily. it can. Further, since the hardened cement material layer 3 containing the foamed particles 4 is laminated by using the upper surface 3a at the time of hardening as a laminated surface with the foamed resin block 2, the foamed particle 4 should float on the surface of the hardened cement material layer 3. It is excellent in aesthetics.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is a structural member for a railway station platform and other civil engineering / construction. More specifically, the surface layer of the structure can be constructed very easily, or need not be constructed. , Structural materials for civil engineering and construction, which have excellent aesthetics.

[0002]

[Prior Art]

 Conventionally, in the construction or renovation work of structures such as roads and platforms for railway stations, under the heavy traffic of people and vehicles, a narrow space in a limited area was secured, and the existing facilities were destroyed. They were constructing a new structure mainly for concrete while embanking and building rebar.

Therefore, in the construction under such a situation, it is not possible to use a large-sized transportation machine or the like, and therefore, transportation of earth and sand or crushed concrete at the repaired portion, or a concrete hardening formwork or the like. There is no choice but to rely on human power for the material transportation work. In addition, the conventional construction method using concrete requires several days to obtain concrete of the required strength, so the construction period will be longer, and the traffic control and safety of people and vehicles during that period will be lengthened. I had to give full consideration to it.

Therefore, in order to shorten the construction period, some of the present inventors have proposed a method of stacking and constructing foamed resin blocks instead of embankment or concrete driving (Japanese Patent Application No. 2-74607). Proposed.

[0005]

[Problems to be solved by the device]

 However, even when the foamed resin blocks are stacked and constructed, the foamed resin blocks are exposed on the top and side surfaces of the stacked structure, which is the surface layer of the structure, so it is necessary to further coat the surface layer material. In order to transport heavy goods and to move people frequently on the upper surface part, a floor layer made of hardened cement and a surface material layer such as asphalt are formed on it, and on the side part. In order to increase the strength of trains against heat and foreign materials such as gravel, it was necessary to install wall members such as concrete boards and sheet piles, which was troublesome.

Therefore, some of the present inventors have found a structural member in which a foamed resin block and a cement hardened material layer are integrated (Japanese Patent Application No. 3-25100). However, in order to improve the lightness and heat insulation properties of the hardened cement layer in this structural member, a cement composition in which expanded particles such as polystyrene are mixed with cement is used, and a foamed resin block placed in a mold is used. When the structural member is prepared by pouring and curing it on the top, the cement hardens while the foamed particles in the cement composition float, leaving a large number of foamed particles on the surface of the hardened cement layer, resulting in an appearance. However, there was a problem that the foamed particles on the surface were detached and unevenness was generated on the surface.

The present invention solves the above-mentioned conventional problems in the foamed resin block stacking method described above, and can construct the surface layer of the structure very easily, or does not need to be constructed, and Its purpose is to provide a structural material for civil engineering and construction, which has a smooth surface and is excellent in appearance.

[0008]

[Means for Solving the Problems]

 As a result of earnest studies, the present inventors have succeeded in achieving the above object by adopting the following configuration. That is, the structural member for civil engineering and construction of the present invention is a structural member in which a hardened cement material layer containing expanded particles is laminated on at least one surface of a foamed resin block, and the hardened cement material layer is formed of expanded particles. It is characterized in that an upper surface of the contained cement composition at the time of curing is laminated as a laminated surface with the foamed resin block.

Hereinafter, the present invention will be described in more detail with reference to the drawings. In one embodiment, as shown in FIG. 1, the civil engineering / construction structural member 1 of the present invention is one in which a foamed resin block 2-containing cement hardened material layer 3 is provided on at least one surface of a foamed resin block 2. Here, the block may be a block that can be stacked substantially without gaps by arranging or stacking a large number of blocks or by further combining another foam of the same shape or a different shape on or in the middle. It may have any shape. The simplest shape of the block is a cube, a rectangular parallelepiped, or the like. Further, the two opposite surfaces may be inclined in parallel, or may have a phase-shift structure.

The foamed resin block 2 constituting the civil engineering / construction structural member 1 of the present invention can be formed of various foamed resins, examples of which include polystyrene, polyethylene, polypropylene, polyurethane, and poly. Examples include foamed resins such as vinyl chloride. The foamed resin block 2 usually has a density of 0.01 to 0.05 g / cm ³ . The size is not particularly limited, but for example, 100 to 200 cm in length, 50 to 100 cm in width, and 50 to 100 cm in thickness are preferable.

It is preferable that the foam of the foamed resin block 2 as described above has cells that are independent of the water resistance and strength. The hardened cement material layer 3 containing expanded particles 4 constituting the civil engineering / construction structural member 1 of the present invention is formed from the hardened material of various cement compositions such as concrete and mortar, and the expanded particles 4. Examples of the hydraulic cement include ordinary Portland cement, moderate heat Portland cement, early-strength Portland cement, low-sulfate Portland cement, white Portland cement and other Portland cement, hydraulic lime, Roman cement, natural cement. , Alumina cement, blast furnace cement, silica cement, expanded cement, colored cement, etc. Of these, it is preferable to use Portland cement, hydraulic lime, natural cement, blast furnace cement, expanded cement, and colored cement.

The foamed particles 4 are typically foamed particles of a resin such as polystyrene, polyvinyl chloride, or polypropylene having a density of 0.008 to 0.1 g / cm ³ and a particle size of 2 to 15 mm. is there. It may be an expanded particle of an inorganic material such as shirasu balloon. The mixing ratio of the foamed particles is usually 0.2 to 30 parts by weight with respect to 100 parts by weight of cement. Further, various aggregates, reinforcing materials, weight-reducing materials, water glass and the like can be added to the cement composition. The thickness of the hardened cement layer 3 containing the foamed particles 4 is usually 2 to 15 cm.

In the civil engineering / construction structural member 1 of the present invention, a hardened cement material layer 3 is laminated with a hardened upper surface 3 a of a cement composition containing expanded particles as a laminated surface with a foamed resin block 2. Preferably, the foamed resin block 2 formed by foaming is put in a mold, and the uncured expanded particle-containing cement composition is poured from above the mold, and after the composition is uncured, after covering with a lid. However, it is preferable that the cement composition is expanded and the foamed particle-containing cement composition is positioned under the foamed resin block 2 and cured to be cured to form the foamed particle 4-containing cement cured material layer 3. A foamed resin block 2 is covered on a casting composition containing a cured foamed particle-containing cement composition having a desired thickness, and then cured and cured to form a cemented hardened product layer 3 containing foamed particles 4. Product May be manufactured.

Further, the foamed resin block 2 and the cement hardened material layer 3 are separately manufactured, and the upper surface 3 a of the cement hardened material layer 3 at the time of hardening is used as a laminated surface with the foamed resin block 2 and two adhesives are used. Can be integrated. If the cement hardened material layer 3 containing the foamed particles 4 is integrated with the foamed resin block 2 by an inverse taper type joining means as shown in, for example, FIG. 1, the hardened material layer 3 is peeled off. This is preferable because it does not happen. Such a structure can be easily obtained by previously forming a concave portion having an inverse taper when the foamed resin block 2 is molded, and cementing cement into the concave portion and curing the same.

Further, when the cement hardened material layer 3 containing the expanded particles 4 is provided at the corner of the structure when the structure is constructed by using the structural member 1 of the present invention, the cement resin layer 3 is formed on the upper surface of the foamed resin block 2. It may be provided on two surfaces of one side surface. Further, the cement hardened material layer 3 containing the foamed particles 4 may be provided on the upper surface of the foamed resin block 2 and on three surfaces of two continuous side surfaces for the corners of the upper part of the structure.

As shown in FIG. 2, when constructing a civil engineering / construction structure, for example, a platform 10 for a railway station, using the structural member 1 of the present invention, after shaving sand or embankment On the foundation 6 which is laid with sand or gravel and crushed and hardened from above, the conventional foamed resin block 7 having no cement hardened material layer and the book on the upper surface and the side surface are provided. The invented structural member 1 is laid out so that the hardened cement material layer 3 is located on the surface to form a stacked structure, and the floor member 8 is formed on the upper surface of the structure by asphalt, concrete, tiles, or the like. .. In addition, 5 is a rail.

[0017]

[Effect of the device]

 The structural member for civil engineering / construction of the present invention has a block shape, and thus is lightweight and convenient to carry. In addition, since the layer of hardened cement material containing expanded particles is previously integrated with the foamed resin block, when constructing a structure, such as a railway station platform, by the foamed resin block stacking method, the top and side surfaces of the stacked structure are Since the floor layer which has been required to be reconstructed by the conventional construction method has already been formed in the section, the floor and wall of the platform can be formed by simple construction.

Further, since the hardened cement material layer containing expanded particles is laminated with the upper surface at the time of hardening as a laminated surface with the foamed resin block, the expanded particles float on the surface of the hardened cement material layer. It is a structural member for civil engineering and construction that has an excellent aesthetics.

[Brief description of drawings]

FIG. 1 is a perspective view of a structural member for civil engineering and construction showing an embodiment of the present invention.

FIG. 2 is a sectional view showing an embodiment of a platform constructed by using the structural member for civil engineering / construction of the present invention.

[Explanation of symbols]

 1 Structural members for civil engineering / construction 2 Foamed resin block 3 Cement hardened material layer containing foamed particles 3a Upper surface 4 Foamed particles

Claims (1)

[Scope of utility model registration request] 1. A structural member for civil engineering and construction, comprising a hardened cement material layer containing expanded particles on at least one surface of a foamed resin block, the hardened cement material layer comprising:
A structural member for civil engineering and construction, wherein an upper surface of a cement composition containing expanded particles when cured is laminated as a laminated surface with the foamed resin block.