JP2001164680A - Method of manufacturing thermal insulating concrete product and concrete product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stretch and bring an impervious foaming body 2 in contact with an outer face or inner and outer faces of a concrete product 4 integrally in one process when manufacturing the concrete product. SOLUTION: An impervious foaming body 2 is brought into contact with one or both of opposing faces 1', 1' of opposing forms 1, 1, and ready-mixed concrete is charged between an inner face 2' of the foaming body 2 on one side and the opposing face 1' of the form 1 on the other side or between the inner faces 2' and 2' of the foaming body 2 which come into contact with the opposing faces 1', 1' of both forms 1, 1 to prevent the foaming body 2 from floating up.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating concrete product constituting a wall surface, a bottom surface, and the like of a basement, an underground warehouse, and the like, and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, as a method of attaching a heat insulating material to a concrete product, a method of attaching the concrete after hardening or a method of spraying a foam have been generally used.

[0003] Concrete products manufactured by such a manufacturing method require an installation process and a spraying process after the manufacture of the product, which takes time and effort, and also requires a gap at a boundary surface between the heat insulating material and the concrete. A space is easily generated, which has been a factor of reducing the heat insulating effect.

[0004] Therefore, the low ground temperature on the outer surface of the heat insulating material is transmitted to the gaps and spaces, and the temperature of the concrete wall surface is reduced. As a result, there has been a problem that the water vapor in the room is cooled along the wall surface and dew condensation occurs.

[0005] Further, the gaps and spaces at the boundaries increase in area, increasing the wet surface and humidity in the basement or underground warehouse.

[0006]

SUMMARY OF THE INVENTION According to the present invention, when a concrete product is manufactured, a heat insulating material is integrated into the outer surface or the inner and outer surfaces of the concrete product by a single step at the same time as the ready-mixed concrete is put into the formwork to form a gap or space. It is an object of the present invention to obtain a heat-insulating concrete product having no room for the above and to suppress the floating of the assembled basement by the groundwater by the product.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an impermeable foam on one or both opposing surfaces of an opposing formwork, wherein the inner surface of one of the foams and the other face the other. A heat-insulating concrete product characterized by preventing floating of the foam and injecting ready-mixed concrete between the facing surface of the mold or between the inner surfaces of the foam in contact with the facing surfaces of both molds. The heat insulation according to the first invention, wherein the interface between the concrete hardened by the pressure due to the weight of the ready-mixed concrete and the deformation of the foam due to the heat of hydration of the ready-mixed concrete and the foam is inseparably attached. The method for producing a heat-insulating concrete product according to the first or second aspect of the present invention, wherein a small engaging groove or a small engaging recess in the horizontal direction is provided in advance on the inner surface of the water-impermeable foam. The outer surface or the inner and outer surfaces of a concrete product are covered with a water-impermeable foam, and the concrete mortar / cement or the like is pressed into the irregular surface of the foam irregularly in an irregular manner to integrate the boundary surface. The heat-insulating concrete product according to the fourth aspect of the present invention, wherein a small horizontal engaging groove or a small engaging groove is provided in advance on the inner surface of the water-impermeable foam of the heat-insulating concrete product. A unit block or an end plate block,
The heat insulating concrete product according to the fourth or fifth aspect of the present invention, wherein an outwardly facing step surface is formed on the outer wall surface. The above-mentioned step can connect a levitating wire facing the foundation concrete to the outwardly facing step surface of the basement assembled by the block. Sixth
The heat-insulating concrete product according to the sixth aspect of the present invention, in which a building foundation concrete can be engaged and cast on the outward step surface of the basement assembled by the block. The heat insulating concrete product according to the eighth aspect of the present invention is capable of engaging and casting.

[0008]

DETAILED DESCRIPTION OF THE INVENTION An opposing steel form 1 on a base 7 is shown.
1 are erected with bolts 8 and a floating prevention plate 9 is protruded in the opposite direction at the upper end of one mold 1 in FIGS. 1 (a) and 2 (b) and at the upper end of both molds 1 and 1 in FIG. I do.

In FIGS. 1 (a) and 1 (b), a plurality of needle-like projections are provided on the facing surface 1 'of one mold 1 and in FIG. 10 and the water-impermeable foam 2 is provided on one of the opposing surfaces 1 ′ or both opposing surfaces 1 ′ and 1 ′.
From the lower surface of the surfacing prevention plate 9 to the upper surface of the base plate 7, and the needle-like projections 10
The foam 2 is prevented from floating on the facing surface 1 'or 1', 1 'by being inserted into the outer surface 2 ".

In this state, the space between the inner surface 2 'of one foam 2 and the opposing surface 1' of the other mold 1 or the opposing surfaces 1 ', 1' of both molds 1, 1 Ready-mixed concrete is charged or poured into the space between the inner surfaces 2 ', 2' of the foams 2, 2 which are in close contact.

Since the poured or poured ready-mixed concrete has a large fluidity, its own weight is subjected to a component force not only in a direction perpendicular to the upper surface of the base plate 7 but also in a direction perpendicular to the facing surface 1 'or the inner surface 2'. Then, the water-impermeable foam 2 is compressed in the horizontal direction, the cement mortar enters irregularly into the inner surface 2 'of the foam 2 irregularly (for example, FIG. 2 (b)), and The heat of hydration reaction (55-80 ° C.) causes the foam 2 to expand. The uneven penetration stress on the uneven inner surface 2 ′ is eliminated by the reaction heat, the approach pressure and the uneven deformation are stabilized, the uneven boundary surface 3 is joined, and the innumerable small aggregates 5 ′ in the mortar 5 are formed. Since the state where the cement 6 and the cement 6 have entered the inner surface 2 ′ is maintained, the boundary 3 is not separated, and the hardened concrete and the foam are integrated at the boundary 3.

After hardening, the bolts 8 are removed, and the molds 1, 1 are separated from the base plate 7 and removed from the mold. Thus, FIGS.
As shown in FIG. 6, a heat-insulating inverted gate-shaped unit block (concrete product 4) or a heat-insulating end plate block 4a of an assembled basement comprising a bottom plate 4 'and both side walls 4 ", 4" can be formed by one shot. . An outward stepped surface 4b is formed at the same level on the upper surface of the outer wall surface of the inverted gate unit block 4 and the end plate block 4a, and the outer wall thickness on the stepped surface 4b is reduced. And a plurality of the unit blocks 4 are juxtaposed on I-beams 12, 12 partially embedded in the foundation concrete 11, and both ends of the juxtaposed unit blocks 4 are end plate blocks 4.
a to close the basement 4c,
The bottom plate 4 ′ of the unit block 4 supported by the beams 12, 12 partially removes the foam 2 on the lower surface thereof, and
Are directly supported by the I-beams 12 and 12, and an upper stop anchor bolt 13 ′ or an anchor hole of an upper end stop wire 13 ′ of an anti-floating wire 13 of an underground warehouse or a basement 4 c is provided on an outward step surface 4 b of the block 4 or 4 a. Is connected to an anchor bolt 13 ″ provided on the foundation concrete 11 (FIG. 8).

Further, as shown in FIG. 11 (a), the building foundation concrete 14 can be engaged and cast on the outward step surface 4b of the basement 4c to stop the floating of the basement 4c, as shown in FIG. As shown in FIG.
5 by engaging and casting the basement 4 due to its weight.
The floating of c can be stopped. The levitation of the basement 4c is caused by the rise of the groundwater level 16 and its buoyancy. The buoyancy can be suppressed by the wire 13, the building foundation concrete 14 and / or the heavy concrete 15.

The water-impermeable foam 2 is a closed-cell foam synthetic resin, for example, a styrofoam plate is used, or an inorganic water-permeable heat-insulating foam such as a calcium carbonate foam heat insulating plate is provided on the inner surface 2 '. The water-impermeable Styrofoam plate can be adhered to be used as a composite heat insulating material, or a rubber or synthetic resin elastic film can be adhered to the outer surface (mold side) of the inorganic water-permeable foam, and this can be impermeable to water. It can be used as a foam. In this case, a small hemispherical tip is used instead of the needle-like projection 10.

When the bottom plate 4 'shown in FIG. 6 is manufactured, the steel mold 1 for the lower surface is supported on the base plate 7, and the bottom plate 4' is placed above the bottom.
The upper surface steel mold 1 is held, and the water-impermeable foam 2 is interposed between the upper and lower steel molds 1, 1 which are horizontally opposed to each other. Ready-mixed concrete may be charged or poured into the space between the lower surface of the mold 1.

The foam 2 on the steel frame 1 for the lower surface is formed by the total weight of the concrete on the side walls 4 ", 4" and the bottom plate 4 '. The height t of the upper surface of both ends of the foam 2 of the bottom plate 4 'in contact with 2a is the thickness (height t') of the foam 2 in contact with the lower surface of the bottom plate 4 '.
taller than. That is, the thickness (height t ') of the lower surface of the bottom plate 4' is reduced due to the compression by the total weight.

As shown in FIGS. 7 (a), (b), (c) and (d), the inner surface 2 'of the water-impermeable foam 2 is previously provided with a horizontal engaging small groove or a small engaging concave portion 2b. Is formed, and the ready-mixed concrete is allowed to enter the small concave groove or small concave portion 2b to improve the attachment or engagement force between the inner surface 2 'of the foam 2 and the concrete. The small engagement recess 2b may be a plurality of small-diameter arc-shaped recesses arranged in an orderly manner.

Accordingly, the integral side walls 4 ", 4" and the bottom plate 4 '.
Buried in the ground, a low underground temperature in contact with the outer surface 2 ″ of the foam 2 and both side walls 4 ″,
When there is a difference between 4 "and the room temperature inside the bottom plate 4 ', the room temperature is conducted between the side walls 4" and 4 "and the bottom plate 4' concrete. Because of the interposition, the underground temperature is not interrupted by the foam 2 and is not likely to be conducted to the concrete.

The unit block 4 and the end plate block 4a
If the underground warehouse or basement 4c due to the combination of
Building foundation concrete 14 and heavy concrete 15
Is suppressed.

In FIG. 7 (b) (d), reference numeral 10 'denotes a needle-like projection 1.
In FIG. 8, reference numeral 17 denotes a pillow concrete for the I-beam 12; FIG. 11 (a) and FIG. 11 (b), reference numeral 18 denotes a reinforcing steel for the foundation concrete 11 or the building foundation concrete 14;
Is a foundation stone supporting the foundation concrete 11 and the pillow concrete 17, 20 in FIG. 10 is a turnbuckle for fastening the wire 13, and 21 in FIG.
5 is a steel reinforcing bar, 22 is a fixing bolt between the steel reinforcing bar 21 and the outward step surface 4b, 23 is a reinforcing bar of the heavy concrete 15, and 24 in FIG. 8 is a building.

[0021]

The present invention is based on the above-mentioned method and the product thereof. Insulation material made of a water-impermeable foam can be spread tightly on the outer surface of a concrete product without gaps or voids. When the temperature is low, there is no risk of dew condensation on the inner wall, and the water-impermeable foam can be quickly manufactured on the outer surface or the inner and outer surfaces of the concrete product by one-shot bonding. The basement in which the concrete product is assembled is safe because floating by groundwater is suppressed.

[Brief description of the drawings]

FIG. 1A is a front view of a platform and an opposing formwork of the present invention. (B) The figure is a vertical cross-sectional front view of a state in which ready-mixed concrete has been put into the inner surface of the water-impermeable foam and the opposite surface of the other formwork.

FIG. 2A is a longitudinal sectional front view showing a state in which a bolt is removed and an opposing form is removed. (B) The figure is an example of an enlarged vertical section of the boundary surface.

FIG. 3 is a vertical cross-sectional front view of a state where ready-mixed concrete has been put into the opposing surface of the opposing formwork.

FIG. 4 is a plan view of a basement for assembling concrete products.

FIG. 5 is a front view of FIG. 4;

FIG. 6 is a longitudinal sectional view taken along the line AA of FIG. 4;

FIG. 7A is a longitudinal sectional view showing a state in which an engaging recess is formed on the inner surface of the water-impermeable foam, and the inner surface is engaged with ready-mixed concrete. (B) is a front view taken along line BB of (a). FIG. 3C is an enlarged vertical sectional view taken along line CC of FIG. (D) is a plan view taken along line (b) in FIG.

FIG. 8 is a vertical sectional view of a building and an assembled basement.

FIG. 9 is an end view of the basement, foundation concrete, and suspension wire.

FIG. 10 is a side view of FIG. 9;

FIG. 11 (a) is a longitudinal sectional view of a basement concrete of a basement in a state in which the basement is prevented from rising. (B) The figure is a detailed vertical sectional view of the lower part of the basement and the foundation concrete.

FIG. 12 is an enlarged step view of a state in which heavy concrete is engaged and cast on the outward step surface.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Formwork 1 'Opposite surface 2 Impermeable foam 2' Inner surface 2 "Outer surface 3 Boundary surface 4 Concrete product (reverse gate unit block) 4a End plate block 4b Outward step surface 4c Basement room 5 Mortar 6 Cement 11 Basic concrete 13 Anti-floating wire 14 Building foundation concrete 15 Heavy concrete

Claims (9)

[Claims] An impermeable foam is in contact with one or both of the opposing surfaces of the opposing molds, and between the inner surface of one of the foams and the opposing surface of the other mold or both. A method of manufacturing a heat-insulating concrete product, comprising charging ready-mixed concrete while preventing floating of the foam between the inner surfaces of the foam which are in contact with the opposing surface. 2. The interface between the concrete hardened by the pressure due to the weight of the ready-mixed concrete and the deformation of the foam due to the heat of hydration of the ready-mixed concrete and the foam is brought into inseparable contact. Method of manufacturing insulated concrete products. 3. The method for producing a heat-insulating concrete product according to claim 1, wherein a small engaging groove or a small engaging recess in the horizontal direction is provided in advance on the inner surface of the water-impermeable foam. 4. An outer surface or an inner and outer surface of a hardened or solidified concrete product is coated with a water-impermeable foam, and the mortar / cement or the like of the concrete is pressed irregularly into an uneven shape at a boundary surface of the foam. A heat-insulating concrete product, wherein the boundary surface is integrated. 5. The heat-insulating concrete product according to claim 4, wherein a small horizontal engaging groove or a small concave engaging portion is provided in advance on the inner surface of the water-impermeable foam. 6. The heat-insulating concrete product according to claim 4, wherein the concrete product is an inverted gate-shaped unit block or an end plate block, and an outwardly facing step surface is formed on an outer wall surface. 7. The heat-insulating concrete product according to claim 6, wherein an anti-floating wire directed to the foundation concrete can be connected to the outward step surface of the basement assembled by the block. 8. The heat-insulating concrete product according to claim 6, wherein a building foundation concrete can be engaged and cast on the outward step surface of the basement assembled by the block. 9. The heat-insulating concrete product according to claim 8, wherein heavy concrete can be engaged and cast in place of said building foundation concrete.