JPH0243924Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a new joint material with great industrial applicability.

Conventionally, joint materials installed to prevent shrinkage cracks and water permeation in concrete structures such as concrete walls are used to form molds using wooden or plastic joint rods prior to concrete pouring. After the concrete is poured, the joint rods are removed and the voids created by removing the joint rods are caulked. Nowadays, concrete structures are widely used, and it is difficult to completely prevent shrinkage cracks and water permeation in concrete structures.In particular, prevention of shrinkage cracks and water permeation when concrete is poured between each floor has been a concern in this field.

This invention does not require any of the above-mentioned joint bars or caulking processes, and therefore not only speeds up work and reduces costs, but also shrinks concrete structures superior to conventional products. The purpose of the present invention is to provide a joint filling material that can prevent cracking and water permeation at an extremely low cost.

Next, the configuration of the present invention will be specifically explained with reference to the drawings showing one embodiment.

Reference numeral 1 denotes an outer member made of a soft synthetic polymer material having elasticity and having a U-shaped cross section with a groove 2 carved in the axial direction, and having a tapered fitting protrusion with an upwardly expanding diameter at the top. 3 shall be installed protrudingly. In this case, it is preferable to cover the fitting protrusion 3 with an elastic hard synthetic polymer coating 31 as shown in the figure.

Reference numeral 4 denotes a spring member made of a hard synthetic polymer material having elasticity, and the opening end of a fitting protrusion 41 having a U-shaped cross section that fits into the groove 2 of the outer member 1 extends in both directions. The wing portions 42, 42 are fixed to the palate of the outer member 1, and the wing portions 4
2, 42 free ends are sloped surfaces 43, 43 with outward diameter expansion, and the groove 5 in the axial direction formed on the inner circumferential surface of the fitting protrusion 41 having a U-shaped cross section has waterproof properties. It is assumed that a filling member 6 made of a soft synthetic polymer material is filled.

In the joint filling material of the present invention, the main body 7 shown in FIG. 1 is formed by integrally connecting the above-mentioned outer member 1 and the spring member 4 filled with the filling member 6. In the main body 7, If the opening side of the spring member 4 is pinched and compressed in diameter against the elastic force of the spring member 4, and deformed in an outwardly contracted shape as shown in FIG. 2, the direction of the arrow in FIG. Restoration elasticity will be given to.

Next, 8 is a lower mounting cap made of a hard synthetic polymer material, and is provided with a fitting groove 10 with a tapered cross section that expands in diameter toward the bottom surface that contacts the formwork 9. As mentioned above, it is constructed so that the opening side of the spring member 4 of the main body 7 having a compressed diameter, that is, the sloped surfaces 43, 43 of the wing parts 42, 42 can be fitted.

In this case, the tapered surface of the fitting groove 10 is formed on the wing portions 42 and 4 on both sides of the lower end of the spring member 4.
It is preferable to form the cap with a diameter slightly smaller than that of the tapered surface formed by the cap 2, as this makes the fitting between the main body 7 and the lower mounting cap 8 more airtight.

Further, the diameter of the opening side of the spring member 4 of the main body 7 is compressed in advance, and adhesive tape 11 is pasted as shown in FIGS. 2 and 3, thereby maintaining the reduced diameter state of the opening side of the spring member 4. If this is done, the fitting operation with the lower attachment cap 8 when using the joint material of the present invention will be simplified.

12 is an upper mounting cap made of a hard synthetic polymer material like the lower mounting cap 8, and as shown in FIG. , the main body 7 on the bottom of the horizontal plane
The fitting groove 13 of the tapered fitting protrusion 3 is carved.

In the joint material of the present invention, the upper mounting cap 8 is fixed to the vertical formwork 9 using a fixing tool 4 such as a needle, and the upper mounting groove 13 of the upper mounting cap 8 is inserted into the upper part of the main body 7. The fitting protrusion 3 of the main body 7 is fitted, and the compressed diameter opening side of the spring member 4 of the main body 7 is fitted to the lower mounting cap 8. The bottom and one side of 8 are the formwork 9 and upper mounting cap 12, respectively.
The configuration is as shown in FIG. 2, where it comes into contact with.

After that, the first
The next concrete pouring is carried out, thereby integrally joining the right side and bottom surface of the main body 7 and the poured concrete 15.

In this case, if the base portion of the anchor 16 protruding outward is fixed in advance to an appropriate position on the surface of the outer member 1 of the main body 7, the main body 7 at this stage
This is preferable because it allows a tight connection between the concrete and the poured concrete 15. In addition, the outer member 1
It is preferable to make the surface rough as shown in the figure 17, since this also allows a tight connection between the main body 7 and the poured concrete 15.

In the joint material of the present invention, the first
After pouring the next concrete, in the manner shown in FIG. 3, the upper mounting cap 12 is removed, the formwork 9 is moved upward, and the second concrete is poured above the main body 7. The upper surface of the main body 7 and the poured concrete 15 are integrally joined.

Incidentally, 18 in FIG. 3 is the concrete pouring joint surface.

When using the joint filling material of the present invention, after the above steps, the formwork 9 and the lower mounting cap 8 are removed, and if an adhesive tape 11 is attached, the adhesive tape 11 is removed. By removing it, it is possible to obtain a concrete structure equipped with the joint filler of the present invention in the manner shown in FIG.

As is clear from the above structure, the joint filling material of the present invention has the following effects.

(a) There is no need for the use of conventional joints or caulking, which speeds up the work;
This greatly contributes to cost reduction.

(b) As shown in FIG. 2, the outer member 1, the spring member 4, and the upper and lower mounting caps 12, 8
Since the members are wedged together in preparation for concrete pouring, there is no positional change between the members during concrete pouring, and the joint members can be placed accurately and reliably.

(c) As shown in FIG. 4, a spring member 4 and the spring member 4 and poured concrete 1
Since the restoring elasticity of both the outer members 1 which are compressed between the outer members 1 and 5 acts in the direction of the arrow, that is, toward the poured concrete 15 side, shrinkage cracks in concrete structures such as concrete walls can be absorbed very purposefully. The effects in that respect are extremely significant.

(d) The waterproof property of the filling member 6, combined with the shrinkage crack absorbing effect described above, can exhibit a remarkable waterproof effect.

(e) Due to its configuration, it can be manufactured extremely cheaply.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Fig. 1 is a cross-sectional view of the main body, Fig. 2 is a cross-sectional view showing the formwork in which the joint material of the present invention is placed and the first concrete is placed, and Fig. 3 is a cross-sectional view of the secondary concrete. FIG. 4 is a cross-sectional view showing the manner in which pouring was carried out.
It is a sectional view showing an aspect after completion of concrete pouring. In the drawings, 1 is an outer member, 2 is a groove portion, 3 is a fitting protrusion, 31 is a covering portion, 4 is a spring member, 41 is a fitting protrusion, 42 and 42 are wing portions, 43 and 43 are sloped surfaces, 5 is a groove, 6 is a filling member, 7 is a main body, 8 is a lower attachment cap, 10 is a fitting groove, 11 is an adhesive tape, 12 is an upper attachment cap, 13 is a fitting groove, and 16 is an anchor.

Claims (1)

[Claims for Utility Model Registration] 1. A product made of a soft synthetic polymer material having elasticity, with a groove 2 carved in the axial direction and a U-shaped cross section, and a fitting having a tapered cross section with an upwardly expanding diameter. an outer member 1 having a mating protrusion 3 protruding thereon; and a mating protrusion 4 having a U-shaped cross section and fitting into the groove 2 of the outer member 1, which is made of an elastic hard synthetic polymer material.
1 opening end is extended in both directions to form wing portions 42, 42 fixed to the palate of the outer member 1, and the free ends of the wing portions 42, 42 are respectively formed into sloped surfaces 43, 43 with outward diameter expansion; The spring member 4 has a groove 5 formed in the axial direction filled with a filling member 6 made of a waterproof soft synthetic polymer material.
The main body 7 is formed more integrally and has a compressed diameter on the opening side of the spring member 4 to impart restoring elasticity, and a fitting groove 10 into which the opening side of the spring member 4 having the compressed diameter can be fitted. A joint material consisting of a lower mounting cap 8 made of a hard synthetic polymer material and an upper mounting cap 12 in which the fitting groove 13 of the fitting protrusion 3 of the main body 7 is carved on the bottom of an L-shaped horizontal surface. . 2. The joint preparation material according to claim 1 of the utility model registration claim, in which the base portion of the anchor 16 protruding outward is fixed to a suitable position on the surface of the outer member 1. 3. The joint filler material according to claim 1, wherein the opening side of the spring member 4 is maintained in a reduced diameter state by the adhesive tape 11. 4. The seam preparation material according to claim 1, wherein the fitting protrusion 3 of the main body 7 is covered with an elastic hard synthetic polymer coating 31.