JP3231132B2 - Joint material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jointing material for a holding concrete when a waterproofing layer, a heat insulating layer and the like are provided on an upper surface of a slab such as a rooftop and a holding concrete is poured on the upper surface.

[0002]

2. Description of the Related Art After waterproofing or further providing a heat insulating layer on the upper surface of a slab such as a rooftop, a holding concrete is poured. At the time of this driving, as shown in FIG. 16, the joint material A is provided on the driving surface S, for example, in a grid pattern. As shown in FIG. 18, the conventional joint material A has a cap 1 placed on the upper end edge, and is inserted into the fixed base 2 on the waterproof layer or the heat insulating layer D and arranged. In the cross section P in FIG. 16, the length is appropriately cut off so that the fixed base 2 just abuts as shown in FIGS. 19 and 20, or only the upright wall 2a is cut off to a required length. (See the chain line 2a 'in FIG. 20).

[0003] Since the cutting operation of the fixed base 2 is troublesome and tends to be sloppy, the joint material A and the fixed base 2 do not exactly abut, and a gap is generated, and concrete enters between the joint material and the joint material. Inconveniences such as the floating of A occurred.

Under such circumstances, as shown in FIG. 21, a leg 11 is provided which projects laterally over the entire lower surface of the long joint body 10, and one end of the joint body 10 is connected to the leg 11 as shown in FIG.
A joint material A with a leg in which the projecting width w is protruded and the other end is shortened by the length w is devised.

[0005] Even if the joint material A is placed on the legs 11 of the joint material A that crosses the projecting portion of the joint body 10 even at the abutting portion, the end face of the joint material A fits to the side surface of the joint body 10, The disadvantages described above do not occur. Further, when the joints are connected in the length direction, the joints are fitted by placing the projecting portion of the joint body 10 on the leg 11 of the missing portion at the other end and abutting against each other (see FIG. 1).

However, when the end face of the joint material A is abutted against a flat surface (a surface without the legs 11) such as a wall surface, the projecting portion of the joint body 10 or the projecting portion of the legs 11 (the retreating portion of the joint body 10). ) Must be cut off, and as mentioned above, the cutting operation is cumbersome and tends to be sloppy. For this reason, the joint material A is not exactly abutted, and inconvenience such as the lifting of the joint material A occurs as described above.

An object of the present invention is to improve the workability of the abutting portion and the like while keeping the above points in mind.

[0008]

In order to solve the above-mentioned problems, the present invention relates to the above-mentioned joint material with legs provided with legs projecting laterally over the entire lower surface of the long joint body. On one end surface of the joint body, an auxiliary piece having the same cross-sectional shape as that of the joint body having a length protruding to the side of the leg protrudes in the joint body length direction so as to be separable through a cut groove. It is a structure that is continuously provided.

[0009] In this configuration, the leg end on the side where the auxiliary piece is not continuously provided may project by the above-mentioned projection width. Similarly, an auxiliary piece can be continuously provided on the other end face of the joint body. In this case, a piece protruding by the above-mentioned protruding width is detachably connected to at least one of the leg end faces via a cut groove. May be provided. Further, auxiliary pieces are provided on both end faces of the joint body without interposing a cut groove, and both end portions of the leg also have projecting pieces, and at least one of the projecting pieces can be separated through the cut groove. You can also.

[0010]

According to the present invention constructed as described above, in order to connect in the longitudinal direction, in the case where only the auxiliary piece protrudes, the auxiliary piece is cut off, and the joint body and both end faces of the leg are abutted. If the auxiliary piece and the leg protrusion protrude in opposite directions, the auxiliary piece is placed on the upper surface of the leg protrusion. At this time, since the length of the auxiliary piece is the same as the length of the projection of the leg, its end face abuts the end face of the joint body. If the auxiliary piece and the leg protruding piece are both on the joint body end face, the end faces of both pieces are abutted.

In the abutting portion, the one end face side having only the auxiliary piece is placed on the joint material leg on the side where the auxiliary piece abuts, and abuts the joint body. If there is a leg protruding piece, the piece is removed, and the auxiliary piece is made to protrude and hit similarly.

Since the auxiliary piece and the protruding piece are separated through the cut groove, the operation is smooth, and even if the operation is performed roughly, a flat cut surface to some extent can be obtained.
For this reason, there is no inconvenience such as concrete entering at the abutting portion and the joint material rising.

[0013]

FIG. 2 shows one embodiment of a joint material A according to the present invention. This embodiment relates to the joint material A according to the fourth aspect, and comprises a joint body 10 (cut groove in the figure). 12a) is provided on the lower surface of the joint body 10 at both end surfaces thereof.
2 and the protruding piece 15 is provided on the other end surface of the leg 11.

The joint material A is an integrally molded product of a resin foam such as polystyrene, polypropylene, polytarene, polyethylene, etc., and has dimensions L: 1000 mm and h: 53 m.
m, a: 20 mm, t: 12 mm, w: 25 mm, S: 32.
5 mm.

As shown, the joint body 10 is rectangular and long in cross section, and one end face of the joint body 10 and the leg 11 and the other end face of the auxiliary piece 12 and the end face of the protruding piece 15 have an uneven shape fitted to each other. . The concave and convex portions may have any shape as long as they fit together, but the concave portions are formed as dovetail grooves in order to prevent detachment in the longitudinal direction.

The auxiliary piece 12 and the protruding piece 15 are
1 protrudes by a width w, and has a kerf 12a, 1
1a with or without intermediary 1a.
The auxiliary piece 12 and the protruding piece 15 are separated through 2a and 11a.

A recess 13 having a pitch of 32.5 mm and a width of 12.5 m is formed on both side edges of the leg 11.
3 has a projection 11b of width 12.5 mm of the leg 11 as described later.
Are fitted. The recesses 13 on both side edges of the leg 11 are displaced by 12.5 mm in the length direction with respect to the counterpart edge. , A at the two end surfaces, the joined joint materials A, A are on the same axis.

A butyl tape for temporary fixing is adhered to an appropriate position on the back surface of the leg 11.

As shown in FIG. 16, in the embodiment A, as shown in FIG. 16, the joint body A and the legs 11 are appropriately cut to a required length, and the connecting portion Q, the cross portion P, In the part R, it is constructed as shown in FIG.

That is, the connecting portion Q separates the auxiliary piece 12 of one joint material A, and fits the other end surface of the other joint material A to one end surface thereof. The cross portion P has the auxiliary piece 12 on the one end surface side, and cuts and abuts the outer portion (projection piece 15) of the leg 11 on the other end surface side. At this time, the projecting amounts of both ends of the joint body 10 (the auxiliary pieces 1
2) is the width w of the leg 11, so that its end face exactly abuts the side surface of the joint material A crossing.
The key portion R is the same as one end of the cross portion P.

The embodiment shown in FIG. 5 is also based on claim 4, wherein the joint body 10 and both ends of the leg 11 have cut grooves 11a,
An auxiliary piece 12 and a protruding piece 15 are provided via 2a, respectively. The recesses 13 are not formed on the side surfaces of the legs 11, but shallow grooves 13a are formed on the bottom surfaces of the legs 11 at required intervals in the length direction over the entire length in the width direction, and the butyl tape is attached to the bottom surfaces other than the shallow grooves 13a. ing.

In this embodiment A, the end face of the projecting piece 15 is fitted with the convex portion 11b and the concave portion 11c,
It is connected in the length direction, and at the end,
5 is cut off through the cut groove 11a, and the same operation is performed as described above.

In the above two embodiments, the joint body 10 and the auxiliary piece 1
Although the end surface of the leg 2 or the leg 11 has a fitting structure of the concave portion 11b and the concave portion 11c, they may be omitted as shown in FIGS. At this time, the shallow groove 13a can be deleted as shown in FIG. As shown in FIG. 8, the other auxiliary piece 12 in FIGS.
a can be connected via a.

FIG. 9 shows the joint material A according to the first embodiment, FIG. 11 shows the joint material A according to the second embodiment, and FIG. 11 shows the joint material A according to the third embodiment. Each of those described in FIG. 10 and the like can be mentioned. Also in these, it is needless to say that the convex portion 11b, the concave portion 11c, the concave portion 13, and the shallow groove 13a may be formed.

Further, as the joint material according to claim 5,
In FIGS. 5 and 7, there may be mentioned those in which the cut groove 12a is not formed. At this time, at least one of the cut grooves 11a of both protruding pieces 15 may be provided.

In each of the above embodiments, the joint body 10 and the leg 11 are cut off at the joint material end.
As shown in (1), the connection may be made, for example, with a thickness of about 0.5 mm (reference e). If connected, there is an advantage that concrete does not enter at all from the gap and the joint material A does not rise.
Further, the depth of the cut grooves 11a and 12a is appropriately selected in consideration of cutability and strength. The depth may be increased by connecting as described above.

The cross-sectional shape of the leg 11 is not limited to a rectangular cross-section, but may be any as long as the joint body 10 can stand on its own.
For example, the cross section may be trapezoidal as shown in FIG. At this time, the lower surface of the auxiliary piece 12 is the inclined surface 1 along the trapezoidal inclined surface.
2b is recommended. In addition, the connecting portion between the protruding piece 15 and the leg 11 can be a thin joint as shown by a hatched portion in FIG.

Furthermore, when the cap 1 is put on,
4. As shown in FIG. 15, due to the thickness of the cap 1,
In the cross portion P, a gap t may occur between the joint bodies 10 or between the legs 11. This gap t is 1,
If it is about 2 mm, the joint material A does not rise, so that it can be tolerated. It is sufficient that either of the two strikes (FIG. 14 shows the leg 11 and FIG. 15 shows the joint body 10 (cap 1). ing). From this,
The lengths of the auxiliary piece 12 and the protruding piece 15 do not need to completely match the width w of the leg 11, and may be different within an allowable range in which no lifting occurs. Therefore, the “length of the width w of the leg 11” in the claims is a length within the allowable range.

The cross-sectional shape of the auxiliary piece 12 does not need to be exactly the same as that of the joint body 10 as in the embodiment of FIG. 1, and the longitudinal length becomes gradually shorter as in the embodiment of FIG. As shown in FIG. 17, any device that can perform the function of the auxiliary piece 12 such as connection, such as a device having a slit 14, may be used. For this reason, the “same cross-sectional shape” in the claims includes all those having substantially the same cross-sectional shape.

The legs 11 need not be provided continuously over the entire lower surface of the joint body 10, and may be partial, that is, discontinuous.

[0031]

The present invention is constructed as a unit as described above, and is used as a self-supporting joint material with the legs. In addition, since partial contact can be reliably performed, the workability is remarkably improved.

[Brief description of the drawings]

FIG. 1 is a perspective view for explaining construction of an embodiment.

FIG. 2 is a perspective view of the embodiment.

FIG. 3 is a perspective view of a main portion of one end surface of the embodiment, with a part cut away.

FIG. 4 is a perspective view of a main part of the other end surface of the embodiment.

FIG. 5 is a perspective view of another embodiment.

FIG. 6 is a perspective view of another embodiment.

FIG. 7 is a perspective view of another embodiment.

FIG. 8 is a perspective view of another embodiment.

FIG. 9 is a perspective view of another embodiment.

FIG. 10 is a perspective view of another embodiment.

FIG. 11 is a perspective view of another embodiment.

FIG. 12 is a perspective view of a main part of another embodiment.

FIG. 13A is a perspective view of a main part of another embodiment, and FIG. 13B is a cutaway view of the same.

FIG. 14 is a partial perspective view showing a construction state of another embodiment.

FIG. 15 is a front view showing a construction state of another embodiment.

FIG. 16 is an illustration of joint material construction

FIG. 17 is a plan view of a main part of another embodiment.

FIG. 18 is a sectional view of a conventional example.

FIG. 19 is a perspective view of a main part of a conventional example.

FIG. 20 is a perspective view of a main part of a conventional example.

FIG. 21 is a perspective view of a conventional example.

[Explanation of symbols]

 Reference Signs List 10 joint body 11 leg 11a kerf 11b convex part 11c concave part 12 auxiliary piece 12a kerf 13 concave part 13a shallow groove 14 slit 15 protruding piece P cross part A joint material

──────────────────────────────────────────────────続 き Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04F 15/14 E04D 11/00

Claims (5)

(57) [Claims] 1. Along the entire lower surface of the long joint body 10,
A joint material with legs provided with legs 11 protruding to the side thereof, wherein one end surface of the joint body 10 has the same cross-sectional shape as that of the joint body 10 having the length of the laterally protruding width w of the legs 11. Characterized in that the auxiliary pieces (12) protrude in the length direction of the joint body (10) so as to be separable through cut grooves (12a) and are continuously provided. 2. The joint material according to claim 1, wherein the leg end on the side where the auxiliary piece is not continuously provided has the protrusion width w.
Joint material characterized by being protruded only. 3. The joint material according to claim 1, wherein the auxiliary piece is also provided on the other end surface of the joint body.
a joint material protruding in the length direction of the joint body 10 so as to be separable via a or a cut groove 12a. 4. The joint material according to claim 3, wherein at least one of the end faces of the leg is projected by a projection width w.
A joint material characterized in that the protruding pieces 15 are continuously provided so as to be separable via the cut grooves 11a. 5. Over the entire lower surface of the long joint body 10,
A joint material with legs provided with legs 11 protruding laterally, and having the same cross-sectional shape as the joint body 10 having the length of the laterally protruding width w of the legs 11 on both end surfaces of the joint body 10. Auxiliary piece 1
2 are jointed so as to protrude in the length direction of the joint body 10,
The joint material is characterized in that both end portions are protruded by the protruding width w, and at least one of the both protruding pieces 15 is separable through a cut groove 11a.