JPH0546586Y2 - - Google Patents
Info
- Publication number
- JPH0546586Y2 JPH0546586Y2 JP1987198086U JP19808687U JPH0546586Y2 JP H0546586 Y2 JPH0546586 Y2 JP H0546586Y2 JP 1987198086 U JP1987198086 U JP 1987198086U JP 19808687 U JP19808687 U JP 19808687U JP H0546586 Y2 JPH0546586 Y2 JP H0546586Y2
- Authority
- JP
- Japan
- Prior art keywords
- cap
- joint material
- concrete
- joint
- recesses
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 78
- 239000006260 foam Substances 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims 1
- 229920005989 resin Polymers 0.000 description 11
- 239000011347 resin Substances 0.000 description 11
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 5
- 239000005060 rubber Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Floor Finish (AREA)
- Road Paving Structures (AREA)
- Bridges Or Land Bridges (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は伸縮目地材に係り、特にビル屋根や道
路面等に敷設されるコンクリート層中に介設して
コンクリートの外気温の変化による膨張収縮作用
に追随させ、コンクリート面に亀裂が生じること
を防止すると共にコンクリート面の外観上の体裁
を向上させるために使用される伸縮目地材に関す
る。[Detailed description of the invention] [Field of industrial application] The present invention relates to expansion joint material, and in particular, it is installed in a concrete layer laid on building roofs, road surfaces, etc. to prevent the concrete from expanding due to changes in outside temperature. This invention relates to an expansion joint material that is used to follow shrinkage and prevent cracks from forming on concrete surfaces, as well as to improve the appearance of concrete surfaces.
コンクリートを広い面積にわたり施工した場
合、コンクリートは外気温の変化による膨張収縮
してコンクリート面に亀裂が生じる。そのため、
コンクリート面の亀裂防止を図ると共にコンクリ
ート面の外観上の体裁の向上を図るためにコンク
リート施工面に枡目状に目地材を配置させ、各枡
目毎にコンクリートを打設している。
When concrete is constructed over a wide area, the concrete expands and contracts due to changes in outside temperature, causing cracks on the concrete surface. Therefore,
In order to prevent cracks on the concrete surface and improve the appearance of the concrete surface, joint material is placed in a square pattern on the concrete surface, and concrete is poured in each square.
この場合、目地材は支持脚を用いて高さを調整
しながらモルタルで基盤面上に固定するものと、
目地材本体が、例えば台形状に形成されて支持脚
を用いることなく底部に用意した粘着材ないしは
接着材によつて基盤面上に固定するものがある。 In this case, the joint material is fixed on the base surface with mortar while adjusting the height using support legs.
In some joint materials, the main body of the joint material is formed into a trapezoidal shape, for example, and is fixed onto the base surface using an adhesive or an adhesive provided at the bottom without using support legs.
従来のコンクリート打設面に配置される目地材
は、第４図及び第５図に示すように硬質塩化ビニ
ル樹脂からなる第１キヤツプ７１，８１と軟質塩
化ビニル樹脂からなる第２キヤツプ７２，８２と
を押し出し成形により両者を接合した状態で成形
し、これらを発泡体からなる目地材本体の上部に
被冠させ、コンクリート打設面の所定の位置に配
置していた。 As shown in FIGS. 4 and 5, the conventional joint material placed on a concrete pouring surface has first caps 71, 81 made of hard vinyl chloride resin and second caps 72, 82 made of soft vinyl chloride resin. The joint materials were formed by extrusion molding in a state in which they were joined together, and these were placed on top of a joint material body made of foam and placed at a predetermined position on the concrete pouring surface.
しかしながら、上記した従来の目地材では、硬
質塩化ビニル樹脂と軟質塩化ビニル樹脂との間に
おける両者の収縮や使用時の径時変化等により互
いの伸び等が異なるために目地材に反りが生じる
ことが多い。特に長期にわたり、目地材を使用し
た場合、目地材表面の軟質塩化ビニル樹脂から可
塑剤が表面に移行（マイグレイシヨン）して、第
２キヤツプ７２，８２が収縮し、キヤツプが次第
に反りを生じるようになる。
However, in the conventional joint materials described above, the joint material may warp due to differences in elongation between the hard vinyl chloride resin and the soft vinyl chloride resin due to shrinkage and changes over time during use. There are many. In particular, when a joint material is used for a long period of time, the plasticizer migrates from the soft vinyl chloride resin on the surface of the joint material to the surface, causing the second caps 72 and 82 to contract, causing the caps to gradually warp. It becomes like this.
目地材をコンクリート打設面に配置する前に目
地材に反りが生じていると、この反りをなくすた
めの加工等の困難な作業を要するばかりでなく、
反りが十分に解消されないと、コンクリート打設
面のレベル調整が不完全なものとなる。また、目
地材をコンクリート打設面に配置してコンクリー
ト打設後に目地材に反りが生じた場合、目地材の
部分が突出するため補修作業を要し、かつ目地材
の部分に空隙を生じ、漏水の要因となる。 If the joint material is warped before it is placed on the concrete surface, not only will it require difficult work such as processing to eliminate the warp, but
If the warpage is not sufficiently eliminated, level adjustment of the concrete pouring surface will be incomplete. In addition, if the joint material is placed on the concrete pouring surface and the joint material warps after the concrete is poured, the joint material portion will protrude, requiring repair work, and voids will be created in the joint material portion. This can cause water leakage.
本考案の目的は、上記した従来技術の問題を解
消し、目地材の反り等の原因をなくして目地材施
工を容易なものとすると共に漏水を未然に防止で
き、かつキヤツプの交換、補修を簡便化した伸縮
目地材を提供することにある。 The purpose of this invention is to solve the above-mentioned problems of the conventional technology, to make joint construction easier by eliminating causes such as warping of joint material, to prevent water leakage, and to make replacement and repair of caps easier. The purpose of the present invention is to provide a simplified expansion joint material.
上記した目的は、発泡体からなる目地材本体に
被冠されるキヤツプを備え、コンクリート打設面
に設置される伸縮目地材において、前記キヤツプ
が前記目地材本体の上部に被冠される第１キヤツ
プと、この第１キヤツプに被冠される第２キヤツ
プとからなり、第１キヤツプは硬質性材料で形成
され、第２キヤツプは弾性変形可能な材料で形成
されると共に第１キヤツプと第２キヤツプは互い
に係合可能に形成され、かつ第２キヤツプは第１
キヤツプに対して脱着自在に配設されており、第
１キヤツプの脚部間を連接する第１キヤツプの表
面部は複数の凹部を有するジヤバラ状に形成され
ると共に、これらの各凹部内の上面開口端部は凹
部から開口端部に向けて狭くなるテーパー状に形
成され、前記脚部の上端側には段差部が形成され
ており、第２キヤツプの側面内側は前記段差部に
対応した形状に形成されると共に側面外側は平面
状に形成され、第２キヤツプの下面側には第１キ
ヤツプの各凹部にそれぞれ嵌挿される断面矢印形
状の係合部が形成されている伸縮目地材によつて
達成される。
The above-mentioned object is an expandable joint material that is installed on a concrete pouring surface and includes a cap that is covered with a joint material body made of a foam. It consists of a cap and a second cap that is covered with the first cap, the first cap is made of a hard material, the second cap is made of an elastically deformable material, and the first cap and the second cap are made of a hard material. The caps are configured to be engageable with each other, and the second cap is engaged with the first cap.
The first cap is detachably attached to the cap, and the surface of the first cap that connects the legs of the first cap is formed into a rosette shape with a plurality of recesses. The opening end is formed in a tapered shape that narrows from the concave portion toward the opening end, and a stepped portion is formed on the upper end side of the leg, and the inner side surface of the second cap has a shape corresponding to the stepped portion. The outer side of the second cap is formed into a planar shape, and the lower surface of the second cap is formed with an expansion joint material having an arrow-shaped cross section that is fitted into each recess of the first cap. It will be achieved.
〔作用〕
第１キヤツプと第２キヤツプはそれぞれ異なる
材料にて個別に成形される。第１キヤツプは発泡
体からなる目地材本体に被冠され、第２キヤツプ
は第１キヤツプに係合状態で被冠される。[Operation] The first cap and the second cap are individually molded from different materials. The first cap is capped onto the joint material body made of foam, and the second cap is capped in engagement with the first cap.
第２キヤツプは第１キヤツプに対して係合した
状態で被冠されているから、両者の間の伸び率等
が異なつても一方のキヤツプが他方のキヤツプを
拘束しないので反り等の現象が生じない。反りが
防止されることによつて目地材に空隙が生じない
ので漏水を未然に防止できる。 Since the second cap is capped while being engaged with the first cap, even if the elongation rates between the two caps are different, one cap does not restrain the other cap, so phenomena such as warping may occur. do not have. By preventing warping, no voids are created in the joint material, so water leakage can be prevented.
第２キヤツプに損傷が生じた場合、第２キヤツ
プを第１キヤツプからその弾性変形作用を利用し
て容易に取り外し、かつ新しいキヤツプと交換さ
れる。 If damage occurs to the second cap, it can be easily removed from the first cap by virtue of its elastic deformation and replaced with a new cap.
目地材は外気温の変化により長手方向に伸長し
たり、収縮する。このため、目地材の長手方向端
部同志を突き合わせた部分では３〜５年程度経過
すると〓間が生じやすい。この場合、第２キヤツ
プを第１キヤツプに対して目地材の長手方向に移
動させ、前記〓間の上面を第２キヤツプで覆うこ
とによつて漏水を防止し、かつ外観を損なうこと
を防止できる。 The joint material expands or contracts in the longitudinal direction due to changes in outside temperature. For this reason, gaps tend to occur in the portions where the longitudinal ends of the joint materials butt each other after about 3 to 5 years have passed. In this case, by moving the second cap in the longitudinal direction of the joint material with respect to the first cap and covering the upper surface of the gap with the second cap, water leakage can be prevented and the appearance can be prevented from being damaged. .
以下、本考案の実施例を図面に基づいて説明す
る。
Hereinafter, embodiments of the present invention will be described based on the drawings.
第１図は本考案の伸縮目地材の第１実施例を示
す断面図であり、伸縮目地材の長手方向に直交す
る面における断面を示している。 FIG. 1 is a sectional view showing a first embodiment of the expansion joint material of the present invention, and shows a cross section in a plane perpendicular to the longitudinal direction of the expansion joint material.
この伸縮目地材は、発泡体で形成された目地材
本体１と、この目地材本体１の上部に被冠された
第１キヤツプ２と、この第１キヤツプ２に被冠さ
れる第２キヤツプ３とから構成される。 This expandable joint material includes a joint material main body 1 made of foam, a first cap 2 covered on the top of the joint material main body 1, and a second cap 3 covered with the first cap 2. It consists of
目地材本体１は、発泡ポリエチレンからなり、
放射線架橋発泡体、化学架橋発泡体等からなり、
独立気泡を多く有し、発泡倍率としては、約15〜
40程度のものが有効である。 The joint material main body 1 is made of foamed polyethylene,
Consists of radiation crosslinked foam, chemically crosslinked foam, etc.
It has many closed cells and has a foaming ratio of approximately 15~
Something around 40 is effective.
第１キヤツプ２は、硬質塩化ビニル樹脂からな
り、第１図及び第２図に示すように脚部２１，２
２と表面部２３が連接した構造となつている。脚
部２１，２２の最下端部には、その長手方向に沿
つて断面矢印形状の係止部２１ａ，２２ａを備
え、脚部２１，２２の中段部外側面側には上方に
突設された突起部２１ｂ，２２ｂが長手方向に沿
つて成形されている。また、表面部２３と脚部２
１，２２の連接部分は、図に示すように脚部２
１，２２の外周面間の距離よりもやや短い巾に形
成されて長手方向に沿つた段差部２１ｃ，２２ｃ
を構成している。 The first cap 2 is made of hard vinyl chloride resin, and has legs 21 and 2 as shown in FIGS.
2 and the surface portion 23 are connected to each other. The lowermost ends of the legs 21, 22 are provided with locking portions 21a, 22a having an arrow-shaped cross section along the longitudinal direction, and the outer surfaces of the middle portions of the legs 21, 22 are provided with locking portions 21a, 22a that protrude upward. Projections 21b and 22b are formed along the longitudinal direction. In addition, the surface portion 23 and the leg portion 2
The connecting portion of 1 and 22 is connected to the leg 2 as shown in the figure.
Step portions 21c and 22c are formed to have a width slightly shorter than the distance between the outer circumferential surfaces of Nos. 1 and 22 and extend along the longitudinal direction.
It consists of
表面部２３は、断面コ字状の凹部２３ａ，２３
ｂを有する、所謂ジヤバラ状に形成され、これら
の凹部２３ａ，２３ｂの上面開口部はそれぞれ凹
部２３ａ，２３ｂの内部断面巾よりも短くなるよ
うに形成されている。 The surface portion 23 has recesses 23a, 23 each having a U-shaped cross section.
The upper surface openings of these recesses 23a and 23b are each formed to be shorter than the internal cross-sectional width of the recesses 23a and 23b.
また、凹部２３ａ，２３ｂは、その凹部から開
口端部に向けて狭くなるテーパー状に形成されて
いる。 Further, the recesses 23a and 23b are formed in a tapered shape that becomes narrower from the recess toward the opening end.
第２キヤツプ３は、エチレン−プロピレン−タ
ーボリマー（エチレンとプロピレンとの共重合体
であり、加硫を容易にするために第３成分とし
て、例えばジエン類を含む。以下、単にEPTゴ
ムという）製であつて、第１図及び第３図に示す
ように側面部３１，３２と表面部３３が連接され
た構造となつている。側面部３１，３２の断面構
造は、第１キヤツプ２における段差部２１ｃ，２
２ｃに対応した構造となつており、また、表面部
３３の底面側には第１キヤツプ２における凹部２
３ａ，２３ｂの上面開口部に対応した間隔で離間
した断面矢印形状の係止部３３ａ，３３ｂが形成
されている。 The second cap 3 is made of ethylene-propylene-turbo-limer (a copolymer of ethylene and propylene, which includes, for example, a diene as a third component to facilitate vulcanization. Hereinafter simply referred to as EPT rubber). As shown in FIGS. 1 and 3, it has a structure in which side parts 31, 32 and a surface part 33 are connected. The cross-sectional structure of the side parts 31 and 32 is similar to the stepped parts 21c and 2 in the first cap 2.
2c, and a recess 2 in the first cap 2 is provided on the bottom side of the surface portion 33.
Locking portions 33a and 33b having an arrow-shaped cross section are formed spaced apart from each other at intervals corresponding to the upper surface openings of the locking portions 3a and 23b.
これらの係止部３３ａ，３３ｂは、第３図に詳
細に示すようにその最下端部に長手方向に沿つて
延設された断面矢印形状の係止端を備えており、
これらの係止端における巾（図中、l1で示す）
は、凹部２３ａ，２３ｂの上面開口部の開口巾
（図中、l2で示す）よりも僅かに長くなつている。 As shown in detail in FIG. 3, these locking portions 33a and 33b are provided with a locking end having an arrow-shaped cross section extending along the longitudinal direction at the lowermost end thereof,
Width at these locking ends (indicated by l 1 in the diagram)
is slightly longer than the opening width (indicated by l 2 in the figure) of the upper surface openings of the recesses 23a and 23b.
次に上記のように構成される伸縮目地材の作用
効果について説明する。 Next, the effects of the expansion joint material configured as described above will be explained.
発泡体からなる目地材本体１に対して第１図に
示すように第１キヤツプ２が被冠される。このと
き、第１キヤツプ２の脚部２１，２２の最下端部
に形成された係止部２１ａ，２２ａによつて第１
キヤツプ２は、目地材本体１に確実に係止した状
態で嵌合される。次に第１キヤツプ２の段差部２
１ｃ，２２ｃに第２キヤツプ３の側面部３１，３
２が係合し、かつ第２キヤツプ３の係止部３３
ａ，３３ｂが第１キヤツプ２の凹部２３ａ，２３
ｂに嵌入した状態で第１キヤツプ２に第２キヤツ
プ３が被冠される。このとき、EPTゴムからな
る第２キヤツプ３は弾性変形に富む特性を有する
ので、上記した嵌入作業は容易である。 As shown in FIG. 1, a first cap 2 is placed on a joint main body 1 made of foam. At this time, the first
The cap 2 is fitted onto the joint main body 1 in a securely locked state. Next, step part 2 of first cap 2
Side parts 31, 3 of the second cap 3 are attached to 1c, 22c.
2 engages, and the locking portion 33 of the second cap 3
a, 33b are recesses 23a, 23 of the first cap 2
The second cap 3 is placed on the first cap 2 while the second cap 3 is inserted into the second cap 3. At this time, since the second cap 3 made of EPT rubber has a characteristic of being highly elastically deformable, the above-mentioned fitting operation is easy.
また第２図及び第３図に示すようにl1＞l2の関
係にあるので、第２キヤツプ３は第１キヤツプ２
に確実に係止させることができる。 Furthermore, as shown in FIGS. 2 and 3, since the relationship l 1 > l 2 exists, the second cap 3 is smaller than the first cap 2.
can be securely locked.
そして、上記した伸縮目地材は、第１図に示す
状態でその目地材本体の底部側には支持脚を用い
て高さを調整しながら、モルタルで基盤面上に固
定する手段、目地材本体を台形状に形成して基盤
面上に固定する手段等の任意の手段により基盤面
上に枡目状に配置固定される。 The expansion joint material described above has a means for fixing it on the base surface with mortar while adjusting the height using support legs on the bottom side of the joint material body in the state shown in Fig. 1. They are arranged and fixed in a square pattern on the base surface by any means such as means for forming them into a trapezoidal shape and fixing them on the base surface.
上記のような目地材の固定の際、第１キヤツプ
２と第２キヤツプ３は、それぞれ別個に押し出し
成形により形成されているので、従来の目地材の
ように反り、湾曲等の現象が生じない。また、基
盤面上に目地材を固定してコンクリートを打設す
るまでにコンクリート打設面積にもよるが、数時
間〜数日程度を要する。この場合、目地材は太陽
光に曝される。硬質塩化ビニル樹脂製の第１キヤ
ツプ２とEPTゴム製の第２キヤツプ３とはそれ
ぞれ熱膨張等の特性が異なるが、両キヤツプは互
いに係合した状態であり、固定されていないため
に一方の引つ張り等の応力による反り、湾曲が生
じることがない。 When fixing the joint material as described above, since the first cap 2 and the second cap 3 are formed by extrusion molding separately, phenomena such as warping and curving do not occur as with conventional joint materials. . Furthermore, it takes several hours to several days to fix the joint material on the base surface and place the concrete, depending on the area where the concrete is to be placed. In this case, the joint material is exposed to sunlight. The first cap 2 made of hard vinyl chloride resin and the second cap 3 made of EPT rubber have different characteristics such as thermal expansion, but since both caps are engaged with each other and are not fixed, one No warping or curving due to stress such as tension.
次に目地材によつて構成された各枡目部分にコ
ンクリートが打設される。コンクリートの固化後
は、コンクリートの膨張圧縮に対しては、目地材
本体１の発泡体としての特性と共に第１キヤツプ
２の表面部の凹部２３ａ，２３ｂを有するジヤバ
ラ部分により追随でき、しかも第２キヤツプ３は
弾性変形に富むため、コンクリートの膨張圧縮に
容易に追随できる。 Next, concrete is poured into each square section formed by the joint material. After the concrete hardens, expansion and compression of the concrete can be followed by the characteristics of the joint body 1 as a foam and by the bellows portion having the recesses 23a and 23b on the surface of the first cap 2. 3 has high elastic deformation, so it can easily follow the expansion and compression of concrete.
次に長期の使用後、仮に第２キヤツプ３が摩
耗、または亀裂等により損傷が生じた場合、第１
キヤツプ２から第２キヤツプ３を取り外し、新し
いキヤツプと交換することができる。このとき、
第２キヤツプ３の弾性変形により第１キヤツプ２
からの取り外し及び第１キヤツプ２への取り付け
は、いずれも簡単な作業で行うことができる。こ
の第２キヤツプ３を第１キヤツプ２から取り外す
際、第１キヤツプ２は突出部２１ａ，２２ａによ
りコンクリート面に係止されるので、第２キヤツ
プ３のみを容易に取り外すことができる。 Next, if the second cap 3 becomes damaged due to wear or cracks after long-term use, the first cap
The second cap 3 can be removed from the cap 2 and replaced with a new cap. At this time,
Due to the elastic deformation of the second cap 3, the first cap 2
Removal from the cap and attachment to the first cap 2 can both be performed with simple operations. When the second cap 3 is removed from the first cap 2, the first cap 2 is locked to the concrete surface by the protrusions 21a and 22a, so only the second cap 3 can be easily removed.
この際、第１キヤツプ２の表面部２３に形成さ
れた凹部２３ａ，２３ｂからの開口端部に向けて
狭くなるテーパー状に形成されているため、第２
キヤツプ３の係止部３３ａ，３３ｂは凹部２３
ａ，２３ｂから容易に離脱する。 At this time, since the concave portions 23a and 23b formed in the surface portion 23 of the first cap 2 are formed in a tapered shape that becomes narrower toward the opening end, the second cap 2
The locking parts 33a and 33b of the cap 3 are located in the recess 23.
It easily separates from a and 23b.
また、目地施工の場合、目地材の配列（例え
ば、枡目状）した後、コンクリートの打設を行う
が、コンクリート打設までに目地材に太陽が当た
ると、目地材が長手方向にも膨張し、コンクリー
ト打設後、目地材が収縮しやすい。また、夏期に
目地施工した目地材は冬期には収縮しやすくな
る。この結果、目地材の長手方向端部同志の突き
合わせ部分（接合部）において、長さ単位２ｍ当
たりで30mm〜60mm程度の〓間が生じやすい。 In addition, in the case of joint construction, concrete is placed after the joint materials are arranged (for example, in a grid pattern), but if the sun hits the joint materials before concrete is poured, the joint material expands in the longitudinal direction. However, the joint material tends to shrink after concrete is poured. Additionally, joint material applied during the summer tends to shrink during the winter. As a result, a gap of about 30 mm to 60 mm is likely to occur per 2 m of length at the abutting portions (junctions) of the longitudinal ends of the joint material.
この場合、第２キヤツプ３を第１キヤツプ２に
係合した状態で第２キヤツプ３のみを目地材の長
手方向に沿つて所定の距離移動させることにより
目地材の端部同志の突き合わせ部に生じた〓間を
第２キヤツプ３で覆うこともできる。 In this case, by moving only the second cap 3 a predetermined distance along the longitudinal direction of the joint material while the second cap 3 is engaged with the first cap 2, it is possible to create a joint between the ends of the joint material. It is also possible to cover the space with a second cap 3.
本考案において、第１キヤツプはコンクリート
の膨張圧縮に対して追随可能であり、かつ目地材
としての形状を維持できる程度の硬質材料からな
るものであればよい。また、第２キヤツプは弾性
変形可能な材料からなるものであればよい。 In the present invention, the first cap may be made of a hard material that can follow the expansion and compression of concrete and maintain its shape as a joint material. Further, the second cap may be made of an elastically deformable material.
したがつて、上記した実施例では、特に第１キ
ヤツプの材料として硬質塩化ビニル樹脂を例示し
たが、ポリプロピレンその他の硬質の樹脂を適用
することができる。また、第２キヤツプの材料と
してEPTゴムを例示したが、この他に軟質塩化
ビニル樹脂、ABS樹脂、天然ゴム、EPT以外の
合成ゴム等を使用することができ、また塩化ビニ
ル樹脂に弾性を付与するために任意のゴム材料を
ブレンドしたものでもよい。第２キヤツプは目地
材が使用される環境等により要求される特性、例
えば耐候性、耐摩耗性、外気温に対する膨張収縮
率等の各特性に応じて任意の材料を選定可能であ
る。 Therefore, in the embodiments described above, hard vinyl chloride resin was particularly used as the material for the first cap, but other hard resins such as polypropylene may also be used. In addition, although EPT rubber is shown as an example of the material for the second cap, other materials such as soft vinyl chloride resin, ABS resin, natural rubber, and synthetic rubber other than EPT can also be used, and elasticity can be imparted to the vinyl chloride resin. It may also be a blend of any rubber material. Any material can be selected for the second cap depending on the characteristics required by the environment in which the joint material is used, such as weather resistance, abrasion resistance, and expansion/contraction rate with respect to outside temperature.
以上のように本考案によれば、第１キヤツプと
第２キヤツプとを同時に押し出し成形等の手段に
より両者を接合したものでなく、両者を別個に成
形した後に係合しているので、反り等の現象がな
く、目地材の高さを均一にでき、コンクリート打
設時のレベル調整が容易となると共に反りによる
目地材の空隙がなくなり漏水を防止できる。ま
た、第２キヤツプが損傷した場合にも第２キヤツ
プのみを第１キヤツプから取り外し、かつ取り付
けることができ、目地材の交換、補修が容易であ
る。さらに目地材端部同志の突き合わせ部に〓間
が生じた場合、第２キヤツプを第１キヤツプに対
して所定の距離移動させ第２キヤツプにより前記
〓間を覆うことによつて漏水を防止でき、外観を
損なうことを防止できる。
As described above, according to the present invention, the first cap and the second cap are not joined together by means such as extrusion molding at the same time, but are molded separately and then engaged, so that warpage, etc. There is no such phenomenon, the height of the joint material can be made uniform, level adjustment during concrete placement is easy, and voids in the joint material due to warping are eliminated, preventing water leakage. Furthermore, even if the second cap is damaged, only the second cap can be removed from the first cap and attached, making it easy to replace and repair the joint material. Furthermore, if a gap occurs between the butt ends of the joint material, water leakage can be prevented by moving the second cap a predetermined distance with respect to the first cap and covering the gap with the second cap, It is possible to prevent damage to the appearance.
第１図は本考案の伸縮目地材の第１実施例を示
す断面図、第２図は第１図における第１キヤツプ
の斜視図、第３図は第１図における第２キヤツプ
の斜視図、第４図は従来の目地材の一例を示す断
面図、第５図は従来の目地材の他の例を示す断面
図である。
１……目地材本体、２……第１キヤツプ、３…
…第２キヤツプ、２１，２２……脚部、２１ａ，
２２ａ……係止部、２１ｂ，２２ｂ……突起部、
２１ｃ，２２ｃ……段差部、２３ａ，２３ｂ……
凹部、３３ａ，３３ｂ……係止部。
Fig. 1 is a sectional view showing a first embodiment of the expansion joint material of the present invention, Fig. 2 is a perspective view of the first cap in Fig. 1, Fig. 3 is a perspective view of the second cap in Fig. 1, FIG. 4 is a sectional view showing an example of a conventional joint material, and FIG. 5 is a sectional view showing another example of a conventional joint material. 1... Joint material main body, 2... First cap, 3...
...Second cap, 21, 22...Legs, 21a,
22a...Locking part, 21b, 22b...Protrusion part,
21c, 22c... step portion, 23a, 23b...
Recessed portion, 33a, 33b...Locking portion.
Claims (1)
プを備え、コンクリート打設面に設置される伸縮
目地材において、前記キヤツプが前記目地材本体
の上部に被冠される第１キヤツプと、この第１キ
ヤツプに被冠される第２キヤツプとからなり、第
１キヤツプは硬質性材料で形成され、第２キヤツ
プは弾性変形可能な材料で形成されると共に第１
キヤツプと第２キヤツプは互いに係合可能に形成
され、かつ第２キヤツプは第１キヤツプに対して
脱着自在に配設されており、第１キヤツプの脚部
間を連接する第１キヤツプの表面部は複数の凹部
を有するジヤバラ状に形成されると共に、これら
の各凹部内の上面開口端部は凹部から開口端部に
向けて狭くなるテーパー状に形成され、前記脚部
の上端側には段差部が形成されており、第２キヤ
ツプの側面内側は前記段差部に対応した形状に形
成されると共に側面外側は平面状に形成され、第
２キヤツプの下面側には第１キヤツプの各凹部に
それぞれ嵌挿される断面矢印形状の係合部が形成
されていることを特徴とする伸縮目地材。 An expandable joint material that is installed on a concrete casting surface and includes a cap that is covered with a joint material body made of a foam; a first cap that is covered with the upper part of the joint material body; The first cap is made of a hard material, the second cap is made of an elastically deformable material, and the first cap is made of a hard material.
The cap and the second cap are formed to be able to engage with each other, and the second cap is detachably disposed with respect to the first cap, and the surface portion of the first cap that connects the legs of the first cap is formed in a bellows shape having a plurality of recesses, and the upper opening end of each of these recesses is formed in a tapered shape that becomes narrower from the recess toward the opening end, and a step is formed on the upper end side of the leg. The inner side surface of the second cap is formed in a shape corresponding to the stepped portion, and the outer side surface is formed into a flat shape, and the lower surface side of the second cap is formed in a shape corresponding to the stepped portion. An expansion joint material characterized in that engaging portions each having an arrow-shaped cross section are formed to be fitted into each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987198086U JPH0546586Y2 (en) | 1987-12-26 | 1987-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987198086U JPH0546586Y2 (en) | 1987-12-26 | 1987-12-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01102332U JPH01102332U (en) | 1989-07-11 |
| JPH0546586Y2 true JPH0546586Y2 (en) | 1993-12-07 |
Family
ID=31488611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987198086U Expired - Lifetime JPH0546586Y2 (en) | 1987-12-26 | 1987-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0546586Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5326846U (en) * | 1976-08-11 | 1978-03-07 |
-
1987
- 1987-12-26 JP JP1987198086U patent/JPH0546586Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5326846U (en) * | 1976-08-11 | 1978-03-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01102332U (en) | 1989-07-11 |
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