JPH04297640A - Slope forming method for drainage channel or the like - Google Patents

Abstract

PURPOSE:To enable a fixed slope to be formed easily and exactly in a drainage channel even by unskilful workers, when a concrete structural-body is provided with the drainage channel. CONSTITUTION:Moldings 11 having slopes of traingle or trapezoid cross-section matched with channel width are previously formed. Bed disposal is evenly performed on a floor surface 4 for setting a channel 6. After that, the channel 6 for forming the floor surface 4 is coated with water-proof material 8, and the moldings 11 having the slopes are fitted on it. Then, joints or the like between the connecting sections of the moldings 11 having the slopes, walls 2, a weir bodys 5, and the like are coated with the water-proof material 8. Accordingly, at positons for requiring the slopes as in the drainage channel, the slopes can be arranged easily and exactly in a short time even by unskilful workers.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is applicable to underground structures, rooftop drainage ditches, and other narrow places with hard floors such as concrete, where a certain slope is required for drainage. Concerning construction methods for creating slopes.

0002

BACKGROUND OF THE INVENTION In recent years, many buildings have been constructed mainly of concrete, and it has become common for buildings to be high-rise, and to have basements, underground garages, etc. For this reason, the treatment method for water leakage, condensation water, rainwater, etc., which was not a problem in conventional low-rise wooden houses without basements, has become a problem. It has become necessary to construct drainage ditches for water treatment.

[0003] Conventionally, when constructing drainage ditches, etc., the slope for drainage has often depended on the intuition of the craftsman doing the construction; therefore, some constructors fear that water will accumulate, and for safety reasons, they do not create slopes that are higher than necessary. It is a common occurrence that the slope is not constant, and in some places it is even reversed, so that the water is not completely drained and is constantly accumulating. This problem is becoming more and more important, especially in recent years, where there is a shortage of manpower and it is conceivable that completely inexperienced people may become the builder.

[0004] In recent years, land prices in urban areas have soared, buildings have become taller, basements have increased the number of floors, and the floor area has increased, and it has become common for private residences to have underground garages and basements.

As shown in FIG. 7, the outside of the reinforced concrete wall (hereinafter referred to as the wall) 2 that forms the basement 1 is in direct contact with the soil 3, so slight cracks may occur in the wall 2. If there is a defect in the mortar filling of concrete joints or wood concrete holes, water in the soil 3 will flow into the room through cracks, etc., and the amount of water will increase especially during rain.

[0006] Also, the wall 2, like the soil 3 on the outside, has approximately the same temperature throughout the year, so when the temperature inside the basement 1 rises, the wall 2 contacts the wall 2 and becomes below the dew point, causing the wall to Dew condenses on the surface of the body 2 and flows down to the floor 4.

Conventionally, these waters are stored on the floor 4 adjacent to the wall 2.
A weir 5 is provided along the wall 2 and a drainage ditch 6 is formed to collect and treat water entering the basement 1.

The generated water is guided to a drain pipe 9 through a waterproof layer 8 having a water gradient, collected in a water storage tank 10 at the bottom, and drained to the ground by mechanical drainage such as a pump.

Further, an inner wall 7 is formed on the upper part of the weir 5 by a moisture permeable material such as a concrete block.
The moisture passing through the basement 1 is prevented from condensing on the wall 2 and on the surface of the inner wall 7 to improve the livability of the basement 1. Applications other than those mentioned above include floors such as dirt floors. As an example of this, the floor surface of a bathroom washroom is designed with a slope to drain water to the outside to improve drainage.

By the way, in order to create the drainage groove 6 and guide the generated water to the drainage pipe, a waterproof layer with a water gradient is created. This waterproofing layer is generally made of sand mortar or sand mortar mixed with a synthetic polymer emulsion, and the water gradient (1/100 to 5/100) is used to collect water into the drainage pipe. is needed. Therefore, it is necessary to bring in and take out mortar materials, kneading machines, containers, etc. Additionally, creating water gradients requires advanced technology and skilled workers.

[0011] The reality is that such work is carried out in the harsh environment of a basement. The water gradient on the floor of the bathroom and washing area was created using sand mortar in the same way as above.
The water is discharged to the drain.

0012

[Problems to be Solved by the Invention] The present invention provides a method for imparting a constant slope to the bottom of a ditch, such as a drainage ditch, where a constant slope is required at a narrow width even by a person inexperienced in constructing drainage ditches. The purpose is to develop construction methods.

[0013]

[Means for Solving the Problems] The present invention is a method of constructing a slope for drainage ditches, etc., which comprises attaching a molded body having a slope to a floor surface. In addition, when constructing a groove on a flat floor surface, a weir body is provided on at least one side, and a molded body with a slope is pasted so as to be in contact with this weir body, and drainage water that is waterproofed between it and the weir body. This is a slope construction method for utility ditches.

[0014] In the present invention, the molded body has a shape as shown in FIGS. 1, 2, and 3.

[0015] The material is not only water resistant, but
It must have alkali resistance against alkalis from concrete, be lightweight, inexpensive, and have appropriate elasticity. Suitable materials include thermoplastic plastics and thermosetting plastics. Examples of thermoplastic plastics include polyethylene, polypropylene, vinyl chloride, and polystyrene-based polymers; thermosetting plastics include polyurethane, unsaturated polyester, and phenolic resin; and other synthetic rubbers include elastomers such as ABS and AS. In addition, as inorganic materials, asphalt, roofing materials, and elastic mortar compositions (Japanese Patent Laid-Open No. 63-551
No. 43, JP-A No. 64-5935), etc. are suitable.

[0016] Figure 1 (11), Figure 2 (12), Figure 3 (13)
) and the molded bodies shown in FIG. 4 (14) are 1/100 to 5/
It is molded with a slope of 100 degrees, and its shape can be precisely adjusted by extrusion molding, press molding, or placing it in a mold and using methods such as photocuring, thermosetting, and foam molding. The length of the molded body is preferably 3000 mm or less in consideration of handling properties. It is most efficient to manufacture the width according to the width of the groove, but if the material is foam or soft resin, it can be cut on site, so the width is determined based on cost and ease of handling.

When the length to be constructed is longer than the length of the molded body, a molded body 14 having a shape as shown in FIG. 4 may be connected upstream of the molded body 11 of FIG. 1 following the molded body 11 of FIG.

[0018] In particular, if heavy objects are not placed at the bottom of the ditch, such as in a double-walled drainage ditch in a basement, this molded product may be made of foamed polyethylene, foamed polystyrene, foamed polyurethane,
The use of closed cell foams such as expanded phenolic resins is preferred.

Depending on the material, these molded bodies may have low adhesion to waterproof materials, but in that case, appropriate pretreatment such as primer treatment with an appropriate synthetic polymer emulsion or application of polymer cement mortar is necessary. It is preferable to keep it.

[0020] The adhesive used for pasting this molded article needs to be an adhesive (hereinafter referred to as a waterproof material) with excellent adhesive strength and waterproof performance. Typical waterproofing materials include epoxy resin and polymer cement mortar, but when the floor is wet, it is preferable to use polymer cement mortar.

Polymer cement mortar is mortar mixed with a synthetic polymer emulsion.
This polymer emulsion can be combined with many emulsions such as acrylic, vinyl acetate, SBR, ethylene-vinyl acetate, styrene-acrylic, or epoxy resin, but in this case, it is water resistant, waterproof, Polymer cement mortar containing an epoxy resin-based polymer emulsion is particularly preferable in view of adhesion, alkali resistance, etc., and for example, a commercially available mortar is Shouzette (manufactured by Showa Denko K.K.).

An example of the construction method of the present invention will be explained with reference to the drawings. FIG. 5 is a sectional view of the basement 1. Wall 2 is soil 3
A water storage tank 10 for draining condensed water and the like is provided below the concrete floor 4.

To create a drainage ditch, the concrete floor surface 4 is first thoroughly prepared. That is, the base is thoroughly cleaned, efflores, laitance, etc. are removed, and any jumpers, joints, cuts, cracks, etc. are first removed using the usual method and made flat with resin mortar. Next, although the order may be reversed, a molded body with a slope is pasted, and a separately produced weir body 5 made of rectangular lightweight concrete whose surface is covered with plastic is placed at a constant distance from the wall 2. Glue and fix.

After this adhesion is completed, the sloped molded body is pasted in the groove with polymer cement mortar so that a water slope is formed on the side of the drain pipe 9, and the connection parts, walls, and The joints with the weir body are also waterproofed by applying waterproofing material. In the case of Shouzette, the coating amount of the waterproofing material is about 1 to 2 kg/m2, which is sufficient for both adhesion and waterproofing, if the coated surface has been sufficiently prepared.

[0025]

[Function] It is clear that creating a certain slope in drainage ditches, etc. installed in structures such as concrete requires an extremely high level of skill compared to constructing on a flat surface. In the present invention, even an unskilled person can easily and in a short time create a groove with an accurate slope by pasting a molded body having a predetermined slope on the floor surface.

[0026]

[Example] An example will be shown in which the sloped molded body of the present invention is applied to an underground pit construction method. The molded body with a gradient is made of polystyrene beads for foaming (product name: Styrofoam; manufactured by Dow Chemical Co., Ltd.) in the shape shown in Fig. 1 (length 2000 mm, width 1
45mm, height 32mm, however, the other side is 2mm) and Figure 4
shape (length and width are the same, height 62mm (however, the other one is 3mm)
2 mm) was created. Elastic mortar (trade name: SELETAC; manufactured by Showa Denko K.K.) was applied to the molded body having a gradient at a thickness of 2 kg/m2, and the molded body was cured indoors for one week. Also, weir body (lightweight mortar molded body covered with 2mm thick vinyl chloride, length 1000mm,
A rectangular parallelepiped with a height of 70 mm and a width of 50 mm) was separately prepared and subjected to the same pretreatment. The area where the drainage ditch will be installed is marked out, the floor is thoroughly prepared and the floor is made flat, and Shouzette is applied to this floor at a thickness of 1.5 kg/m2.
The molded body having a slope was adhered, and then the weir body was closely adhered to the molded body using a shovette. Next, the drainage ditch was completed by applying shosette to the wall surfaces that would form the ditch, the connections between the wall and the plastic body, the weir body and the molded body, and the weir bodies together to make them waterproof.

[0027]

[Effects of the Invention] As explained above, if the method of the present invention is applied to a place where a certain slope is required, there is no need for a skilled engineer to create a certain slope. This means that even an unskilled person can do this. In addition, since the molded body precisely manufactured with a constant slope is simply pasted on, the slope is accurate and constant. Therefore, it is an excellent construction method because it does not take an unnecessarily high safety factor, so the minimum thickness of the floor is sufficient to create the slope, and the construction can be completed in a short time.

[Brief explanation of drawings]

FIG. 1 is a molded body with a gradient used in the present invention.

FIG. 2 is a molded body with a gradient used in the present invention.

FIG. 3 is a molded body with a gradient used in the present invention.

FIG. 4 is a molded body having another gradient used in the present invention.

FIG. 5 is a sectional view of a basement constructed using the method of the present invention.

FIG. 6 is a sectional view taken along line AA in FIG. 5;

FIG. 7 is a sectional view of a basement constructed using a conventional method.

[Explanation of symbols]

1 Basement 2 Wall 3　Soil 4. Floor 5 Cough 6 Drainage ditch 7 Double wall 8 Waterproof layer 9 Drain pipe 10 Water tank 11 Molded body with slope 12 Molded body with slope 13 Molded body with slope 14 Molded body with slope

Claims (4)

[Claims] 1. A method for constructing a slope for a drainage ditch, etc., which comprises attaching a molded body having a slope to a floor surface. 2. The drainage ditch, etc. according to claim 1, wherein a weir body is provided on at least one side, a molded body having a slope is attached to the floor surface in contact with the weir body, and a waterproof treatment is applied between the weir body and the weir body. slope construction method. 3. The slope construction method for drainage ditches, etc. according to claim 1 or 2, wherein the molded body is made of an elastic mortar composition. 4. The slope construction method for drainage ditches, etc. according to claim 1 or 2, wherein the molded body is made of plastic.