JP2844080B2 - Sealing material for waterproofing and waterproofing of structures - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to various types of civil engineering constructions, such as sealing materials for preventing water leakage and stopping water.

(Prior Art) Conventionally, as shown in FIG. 13, this type of sealing material (a) is interposed in a waterproof or water-stop portion of a structure (b), and is distorted by an external pressure P to form a mating surface. It is configured to perform sealing with.

(Problems to be Solved by the Invention) In the conventional sealing material, since the sealing material is pressurized and distorted, deformation and thinning due to aging occur, which causes a problem in airtightness of the sealing material.

In addition, if the sealing surface and the space are not uniform, the sealing performance is poor and lacks stability, and the surface pressure cannot be constant,
The function as a sealing material cannot be maintained. (Refer to FIGS. 14 to 16) In particular, in the case of the externally pressurized seal, a seal in a space portion exceeding the thickness of the seal material on one line cannot be covered by a single seal material, and it is forcibly applied. When sealing is performed by inserting a large sealing material, the life of the sealing material is shortened due to fatigue and distortion of the material.

The present invention has been proposed in view of the problems of the prior art, and the object thereof is to deform in response to the shape of the mating surface even if the sealing surface is not uniform, and it is possible to seal, An object of the present invention is to provide a waterproof and water-stopping sealing material for a structure which does not cause deformation and thinning due to aging and can be used for construction under normal water.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the waterproof and water-stopping sealing material of the structure according to the present invention is formed by adhering to the outer periphery of an elastic hollow core material having a pressurized fluid injection part. (Function) Since the sealing material according to the present invention is configured as described above, the sealing material is disposed at a location in the structure where waterproofing or waterproofing is required, When a fluid is injected into the hollow portion of the elastic hollow core material through a pressurized fluid injection portion and the concentric material is expanded by applying pressure from the inside of the core material, the concentric material is layered on the outer periphery of the concentric material. Even if the sealing material does not have a uniform sealing surface, it deforms along the shape of the same surface and is closely adhered to the same surface, and the sealing material is not forcibly compressed and changes over time Does not cause deformed thinning.

Also, by increasing the volume of the sealing material by the pressurized fluid sealed in the core material, even if the size of the space of the sealing surface changes on one line, the volume of the sealing material responds, Sealing can be performed reliably.

(Example) Hereinafter, the present invention will be described with reference to an illustrated example.

(A) is a linear sealing material for waterproofing as well as waterproofing the structure,
An outer shell material (2) such as a butyl-based or silicon-based material having adhesiveness is layered on the outer periphery of an elastic hollow core material (1) made of rubber plastic, foamed plastic, or the like,
A pressurized fluid filling pipe (4) and an air removing pipe (5) are connected to the hollow part (3) of the core material (1).

In the figure, (6) and (7) are valves interposed in the pipes (4) and (5).

Since the illustrated embodiment is configured as described above,
The hollow double-structured linear composite sealing material (A) is disposed at the sealing portion of the structure (B), and the hollow of the elastic hollow core material (1) is inserted through the pressurized fluid injection pipe (4). When a pressurized fluid such as grout is injected into the portion (3), the hollow core material (1) is expanded by the internal pressure of the fluid, and the outer shell material (2) having adhesiveness is sealed with the sealing surface of the structure (B). And tightly seal the sealing surface.

In the sealing material (A) shown in the above embodiment, an outer shell material (2) having adhesiveness is layered on the outer periphery of an elastic hollow core material (1) having a hollow portion (3) into which a pressurized fluid is injected. Accordingly, even if the sealing surface (C) is not uniform, it is possible to deform and seal in response to the shape of the mating surface. At this time, the outer shell material (2) adheres to the sealing surface (C) due to its adhesiveness, so that the sealing material (A) is not forcibly compressed. Will not occur.

In addition, the elastic hollow core material (1) causes a volume expansion due to the grout sealed in the hollow portion (3), so that the space portion of the sealing surface is not uniform, and is formed in one linear shape. Even when the size t of the space changes,
The sealing material (A) is in close contact with the sealing surface, so that a stable sealing can be achieved as a whole, and a reliable waterproof and waterproof effect can be obtained.

Further, since the sealing material (A) enables sealing underwater, it is applied to construction under normal water level of civil engineering construction.

The sealing material (A) has a trapezoidal cross section as shown in FIG. 4, a circular cross section as shown in FIG. 5, and other arbitrary cross sectional shapes in addition to the square cross section as shown in FIGS. You.

FIG. 6 shows an embodiment in which joints between adjacent PC plates (8) and (8) are waterproofed by the sealing material (A).

FIG. 7 shows an embodiment in which the sealing material (A) is applied to the water stoppage of the H-shaped parent pile (9) of the Yamadome Pier, and the sealing material (A) is attached around the parent pile (9). After the concrete is cast on the pressure plate (10), a grout material is injected into the hollow portion of the hollow core material (1) of the sealing material (A) through a pressurized fluid injection pipe (4), and the parent pile ( 9) Sealing under the normal water level is performed.

FIG. 8 shows an embodiment in which the sealing material (A) is applied to the water stop around the deep well. The sealing material (A) is attached to the outer periphery of the well (11), and the concrete of the pressure plate (12) is formed. After the casting, a grout material is injected into the hollow portion of the hollow core material (1) of the sealing material (A) through the pressurized fluid sealing pipe (4) to prevent water permeation by groundwater pressure.

The pulp (4) is provided with a check valve for preventing backflow of grout.

 (13) in the figure is discarded concrete.

FIG. 9 shows an embodiment in which the sealing material (A) is applied to the water stoppage of the joint of the concrete skeleton in the underground construction, and the sealing material (A) is disposed on the jointing surface (14) of the skeleton. After casting concrete, hollow core material (1) of the sealing material (A)
A grout material is injected into the hollow portion of the container through a pressurized fluid filled pipe (4) to stop the groundwater leaching from the ground (15) in contact with the slab concrete.

10 to 12 show an embodiment in which the sealing material (A) is applied to the water leakage treatment after the concrete is poured from the underground mountain retaining wall, and the leakage of the underground mountain retaining wall (16) shown in FIG. 10 is shown. The part (17) is cut with a cutter (see FIG. 11), the sealing material (A) of the shaving part (18) is inserted, the grout material is pressed into the hollow core material, and the grout material is removed. Water leakage is prevented by the injection pressure.

(Effects of the Invention) The sealing material for preventing and preventing the structure according to the present invention is an elastic hollow core material in which a grout material is injected as described above, and an adhesive layer formed on the outer periphery of the elastic hollow core material. Since the grout material is injected into the elastic hollow core material, since the injected grout material is nonflammable, the injection work is smoothed and the pressing force of the hollow core material is reduced. Adjustment is easy, and the outer material layered on the outer periphery of the hollow core material has adhesiveness, so even if the sealing surface is uneven, it exhibits a stable sealing effect as a whole and changes over time of the sealing material Deformation due to thinning does not occur.

Further, according to the seal material of the present invention, it is possible to seal in water, and the present invention is applied to construction under normal water level of civil engineering construction.

Furthermore, according to the sealing material of the present invention, plastering work with waterproof mortar, which was conventionally required in caulking, is not required, and the operation is significantly simplified.

[Brief description of the drawings]

FIG. 1 is a partially longitudinal perspective view showing one embodiment of a waterproof and water-stopping sealing material of a structure according to the present invention, FIG. 2 is a longitudinal sectional view thereof, and FIG. FIGS. 4 and 5 are longitudinal sectional views showing other embodiments of the present invention, respectively. FIG. 6 is a longitudinal sectional view showing an example of use in which the sealing material is applied to joint waterproofing of a PC plate. FIG. 7 is a perspective view showing a use example in which the sealing material is applied to water stoppage of a parent pile of a mountain pier, FIG. 8 is a longitudinal sectional view showing an example of use in which the sealing material is applied to water stoppage in a deep well, Fig. 9 is a longitudinal sectional view showing an example of use in which the sealing material is applied to stop water at a joint portion of a concrete skeleton in an underground construction. Figs. FIG. 13 to FIG. 16 are explanatory sectional views showing processing steps, and are longitudinal sectional views showing a state of use of a conventional sealing material. (A) ... sealing material, (1) ... elastic hollow core material, (2) ... outer shell material, (3) ... hollow portion, (4) ... pressurized fluid injection pipe.

Claims (1)

(57) [Claims] 1. A waterproof structure for a structure, comprising: an elastic hollow core material into which a grout material has been injected; and an adhesive shell material layered on the outer periphery of the elastic hollow core material. Sealing material for water stoppage.