JP2019138018A - Molded joint member and water cutoff method using same - Google Patents
Molded joint member and water cutoff method using same Download PDFInfo
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- JP2019138018A JP2019138018A JP2018020694A JP2018020694A JP2019138018A JP 2019138018 A JP2019138018 A JP 2019138018A JP 2018020694 A JP2018020694 A JP 2018020694A JP 2018020694 A JP2018020694 A JP 2018020694A JP 2019138018 A JP2019138018 A JP 2019138018A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
Description
本発明は、舗装路面等のジョイント部や目地から水の浸入を防止する成型目地材に関するものである。 The present invention relates to a molded joint material that prevents water from entering through joints and joints such as a paved road surface.
舗装道路では、路盤の上にアスファルト等の舗装体が敷設されることが多い。道路表面の舗装の継ぎ目（ジョイント部）や舗装端部から舗装体の下へ雨水等が浸入すると、路盤が軟弱化し道路の耐久性が低下してしまう。そのため、舗装継ぎ目に乳剤を塗布して止水することや、成型目地材を設置して止水することが行われており、止水部材としての成型目地材についてこれまでに種々の提案がなされている。 On paved roads, paving bodies such as asphalt are often laid on the roadbed. If rainwater or the like enters under the pavement from the joint (joint part) or the pavement edge of the road surface, the roadbed becomes soft and the durability of the road decreases. For this reason, it has been practiced to apply an emulsion to the pavement seam to stop the water, or to install a molding joint material to stop the water, and various proposals have been made regarding the molding joint material as a water-stopping member. ing.
例えば、特許文献１では、路面の舗装体から剥離し難く、作業に加熱が不要で、夏期の温度上昇に耐え、施工が簡易な目地材として、合成ゴムと充填剤と粘着付与剤とを混練した粘着物質で、軟化点が150℃以上で凝集破壊強度よりも界面剥離強度が大きい物質をテープ状に伸延した目地防水テープが開示されている。 For example, in Patent Document 1, synthetic rubber, a filler, and a tackifier are kneaded as a joint material that is difficult to peel off from a pavement on a road surface, does not require heating for work, can withstand temperature rise in summer, and is easy to construct. There is disclosed a joint waterproof tape in which a material having a softening point of 150 ° C. or higher and having a higher interfacial peel strength than a cohesive failure strength is extended into a tape shape.
また、特許文献２では、舗装のジョイント部や、縁石、舗装止め、橋梁端部構造物などの立ち上がり部に安定して密着し、ジョイント部や舗装端部からの雨水の浸入を効果的に防止することができる成型目地材として、想定される折曲げ線に沿った折曲げ用凹みを片面又は両面に有し、テープ状に成型した成型目地材が開示されている。 Moreover, in patent document 2, it adheres stably to the rising parts, such as a pavement joint part, a curb stone, a pavement stopper, and a bridge end structure, and effectively prevents rainwater from entering from the joint part and the pavement edge part. As a molded joint material that can be formed, a molded joint material having a dent for folding along an assumed folding line on one side or both sides and molded into a tape shape is disclosed.
成型目地材を使用した舗装道路が供用されると、車両の走行量や降雨水量などの天候条件にも依るが、経年により目地の幅は広がり、ジョイント部等における目開きは避けられない。上記特許文献１の成型目地防水テープも上記特許文献２の成型目地材も一定の防水効果は得られるものの、ジョイント部等の目開きが生じてしまうと、その防水効果が失われてしまうという問題がある。 When paved roads using molded joint materials are used, the joint width will be unavoidable due to the widening of joints depending on the weather conditions such as the amount of travel and the amount of rain water. Although both the molded joint waterproof tape of Patent Document 1 and the molded joint material of Patent Document 2 have a certain waterproof effect, if the joint portion or the like is opened, the waterproof effect is lost. There is.
この他、従来の成型目地材としては、合成ゴムや瀝青材を用いた成型目地材もあるが、経年により剥離、やせ、切断などが生じ、耐久性と止水性に問題がある。 In addition, as a conventional molding joint material, there is a molding joint material using a synthetic rubber or a bitumen material, but peeling, thinning, cutting, etc. occur due to aging, and there is a problem in durability and water stoppage.
そこで、本発明は、このような問題に鑑みなされたものであり、耐久性および止水性に優れ、舗装道路等のジョイント部や舗装端部における目開きにも有効な成型目地材を提供することを目的とする。 Then, this invention is made | formed in view of such a problem, and is providing the molding joint material which is excellent in durability and water-stopping, and is effective also in the opening part in joint parts and pavement edge parts, such as a paved road. With the goal.
上記の課題を解決するため、本発明に係る成型目地材は、合成ゴムと水膨張性樹脂とを混練した粘着物質で構成されることを特徴とする。 In order to solve the above-described problems, the molding joint material according to the present invention is characterized in that it is composed of an adhesive substance obtained by kneading synthetic rubber and a water-expandable resin.
ここで、前記合成ゴムはブチルゴム又はクロロプレンゴムであり、50-85wt%の濃度範囲で含まれ、前記水膨張性樹脂は、1-20wt%の濃度範囲で含まれているのが好ましい。 Here, the synthetic rubber is butyl rubber or chloroprene rubber, and is preferably contained in a concentration range of 50-85 wt%, and the water-swellable resin is preferably contained in a concentration range of 1-20 wt%.
これにより、ブチルゴム又はクロロプレンゴムと水膨張性樹脂とを成分として有しているので、舗装道路等のジョイント部や舗装端部における目開きが発生しても、雨水等に反応して膨張し目地を塞ぎ、舗装体の下層への水の浸入を防ぐことが可能な成型目地材が実現される。 As a result, since it has butyl rubber or chloroprene rubber and water-expandable resin as components, even if joints such as paved roads and pavement edges open, it expands in response to rainwater etc. Thus, a molded joint material that can prevent water from entering the lower layer of the pavement is realized.
さらに、長さ方向および幅方向の膨張を抑制する芯材を備えているのが好ましく、前記芯材は、ガラス製の基材であるのがより好ましい。 Furthermore, it is preferable to provide a core material that suppresses expansion in the length direction and the width direction, and the core material is more preferably a glass base material.
これにより、芯材が成型目地材の長さ方向と幅方向に対する膨張を抑制し、止水効果をもたらす厚さ方向への膨張のみを許容するので、より止水効果の高い成型目地材が実現される。 As a result, the core material suppresses expansion in the length direction and width direction of the molded joint material, and only allows expansion in the thickness direction, which provides a water stop effect, thus realizing a molded joint material with a higher water stop effect. Is done.
また、本発明は、上記の成型目地材を、舗装の継ぎ目、舗装端部または橋梁舗装端部の目地に設置することを特徴とする止水方法としてもよい。 Moreover, this invention is good also as a water stop method characterized by installing said molding joint material in the joint of a pavement joint, a pavement edge part, or a bridge pavement edge part.
以上のように、本発明に係る成型目地材によれば、舗装道路等のジョイント部や舗装端部における目開きに対して優れた耐久性と止水性を発揮することができる。 As described above, according to the molded joint material according to the present invention, it is possible to exhibit excellent durability and water stoppage with respect to the opening at the joint portion and the paved end portion of the paved road or the like.
以下、本発明に係る成型目地材について説明する。 Hereinafter, the molded joint material according to the present invention will be described.
本実施形態に係る成型目地材は、舗装道路の継ぎ目であるジョイント部や舗装道路の端部、橋梁舗装端部などの目地に設置される目地材であり、長尺のテープ状に成型され、保存時はロール状に巻いた状態となっている。そして、使用時には、ロールを解き、離型紙を剥がし目地に沿って貼り合わせることで、目地を塞ぎ、浸水を防ぐものである。 The molded joint material according to the present embodiment is a joint material that is installed at joints such as a joint portion of a paved road, an end portion of the paved road, and a bridge paved end portion, and is molded into a long tape shape, When stored, it is rolled up. At the time of use, the roll is unwound, the release paper is peeled off and bonded along the joint, thereby closing the joint and preventing flooding.
成型目地材は、合成ゴムと水膨張性樹脂とを混練した粘着物質で構成されている。主剤となる合成ゴムは、ブチルゴム又はクロロプレンゴム（ＣＲゴム）であり、50-85wt%の濃度範囲で含まれており、ＣＲゴムの場合は特に50-60 wt%の濃度範囲で含まれているのが好ましい。また、水膨張性樹脂は、例えば親水性ポリウレタン樹脂又はポリアクリル酸ナトリウム樹脂であり、1-20wt%の濃度範囲で含まれている。これに加えて、配合される充填剤として炭酸カルシウム、粘着剤として石油系樹脂、粘着性液体として油、その他カーボンブラックをそれぞれ0-10wt%の濃度範囲で含むものである。これらを混練した粘着物質を厚さ10ｍｍ程度、幅30ｍｍ程度、長さ5ｍ程度のテープ状に成型して、離型紙を貼り合わせて成型目地材が製造される。 The molding joint material is composed of an adhesive substance obtained by kneading synthetic rubber and a water-expandable resin. Synthetic rubber as the main agent is butyl rubber or chloroprene rubber (CR rubber), which is included in the concentration range of 50-85 wt%, especially in the case of CR rubber, in the concentration range of 50-60 wt%. Is preferred. The water-swellable resin is, for example, a hydrophilic polyurethane resin or a sodium polyacrylate resin, and is contained in a concentration range of 1-20 wt%. In addition to this, calcium carbonate as a filler to be blended, petroleum-based resin as an adhesive, oil as an adhesive liquid, and other carbon black in a concentration range of 0 to 10 wt%, respectively. The adhesive material obtained by kneading these is molded into a tape shape having a thickness of about 10 mm, a width of about 30 mm, and a length of about 5 m, and a release paper is bonded to produce a molded joint material.
このように構成された成型目地材は、水膨張性を有する合成ゴムを成分として有しており、経年により継ぎ目箇所に目開きが発生しても、水膨張性を有しているため雨水等に反応して膨張し目地を塞ぐので、舗装体の下層への水の浸入を防ぐことができる。 The molded joint material configured in this way has a synthetic rubber having water expandability as a component, and even if an opening occurs at a joint portion due to aging, it has water expandability. In response to swell, the joints are blocked, so that it is possible to prevent water from entering the lower layer of the pavement.
また、成型目地材は、水膨張性を有する合成ゴムをより気中近くで使用するために、芯材にガラス製の基材を備えている。芯材にガラス製の基材を用いることで、長さ方向と幅方向に対する膨張性が抑制され、止水効果をもたらす厚さ方向に対する膨張性のみを許容しているため、より止水効果を高めることができる。 Further, the molded joint material includes a glass base material in the core material in order to use a synthetic rubber having water expandability nearer in the air. By using a glass base material for the core material, the expandability in the length direction and the width direction is suppressed, and only the expandability in the thickness direction that brings about a water stop effect is allowed. Can be increased.
図１は、成型目地材の設置例を示す図である。 FIG. 1 is a diagram illustrating an installation example of a molded joint material.
成型目地材１は、例えば、舗装道路の路盤２の上に形成される舗装体に設置される。図１では、舗装体を構成する基層３と路面表層４のうち、路面表層４の目地に成型目地材１が設置される例を示している。また、図２に示すように、舗装体を構成する基層３と路面表層４のうち、基層３の目地に成型目地材１が設置されるとしてもよい。 The molded joint material 1 is installed on a pavement formed on a roadbed 2 of a paved road, for example. FIG. 1 shows an example in which the molded joint material 1 is installed on the joint of the road surface layer 4 among the base layer 3 and the road surface layer 4 constituting the pavement. Moreover, as shown in FIG. 2, the molding joint material 1 may be installed in the joint of the base layer 3 among the base layer 3 and the road surface layer 4 which comprise a pavement.
成型目地材１は、橋梁舗装端部に設置するとしてもよい。図３に示すように、橋梁端部８において、コンクリート床版５の上に形成されるレベリング層６の目地と、レベリング層６の上に形成される表層７の目地とに成型目地材１を設置することで、当該部分が経年により目開きが発生しても止水性を損なわないようにすることができる。 The molded joint material 1 may be installed at the end portion of the bridge pavement. As shown in FIG. 3, the molded joint material 1 is applied to the joints of the leveling layer 6 formed on the concrete floor slab 5 and the joints of the surface layer 7 formed on the leveling layer 6 at the bridge end 8. By installing, even if the opening of the part occurs due to aging, the water stoppage can be prevented from being impaired.
このように構成された成型目地材は、合成ゴムと水膨張性樹脂とを混練した粘着物質で構成されているので、経年により継ぎ目箇所に目開きが発生しても膨張して目地を塞ぐので、舗装体の下へ水が浸入することを防ぐことができる。 The molded joint material configured in this way is composed of an adhesive substance that is a mixture of synthetic rubber and water-expandable resin, so even if an opening occurs at the joint due to aging, the joint joint material expands and closes the joint. It is possible to prevent water from entering under the pavement.
以下の表に本発明に係る成型目地材の試験結果を示す。 The following table shows the test results of the molded joint material according to the present invention.
表１の試験結果は、施工対象となるジョイント部の目開きを模して密粒度アスファルトで形成した対象物に、本発明の実施例の製品と、比較例として従来品との２種類の防水シートを敷設し、そのシートの吸水膨張性が防水性に効果があるか見極めるために、24h水浸させた後、加圧透水試験を行って評価をしたものである。 The test results in Table 1 show that two types of waterproofing, the product of the example of the present invention and the conventional product as a comparative example, are made on the object formed by dense grain asphalt imitating the opening of the joint part to be constructed. In order to determine whether a sheet is laid and the water-absorbing and expansibility of the sheet is effective for waterproofing, the sheet was immersed in water for 24 hours and then evaluated by performing a pressurized water permeability test.
水浸前は、実施例と比較例の双方とも水の通りがあり、一定水量が流下する秒数で確認したところ、実施例/比較例=68.96/45.20≒1.5と、若干ながら実施例の水の通りが悪かった程度で双方に大きな差は認められなかった。 Before water immersion, both the example and the comparative example had water passing through, and when the number of seconds during which a constant amount of water flowed was confirmed, the example / comparative example = 68.96 / 45.20 ≒ 1.5. There was no significant difference between the two to the extent that the street was bad.
一方、水浸後は、24h水浸させることにより、透水係数が6.33×10-5/3.60×10-3≒1/57と、実施例と比較例との差が大きく開き、実施例の値は極めて小さな値を示した。 On the other hand, after the water immersion, the water permeability is 6.33 × 10 -5 /3.60×10 -3 ≒ 1/57 by soaking in water for 24 hours. Showed very small values.
この試験結果より、実施例は比較例に比べて、目開きに対する止水に有用であることが証明されたといえる。 From this test result, it can be said that the example was proved to be more useful for water stoppage against the opening than the comparative example.
表２に示すのは、芯材にガラスの基材を用いて拘束性を調査した結果である。ガラス基材の拘束材を入れた成型目地材と、ガラス基材の拘束材を入れていない拘束材とを１ケ月水漬させた後の変化を比較したものである。 Table 2 shows the results of investigating restraint using a glass substrate as the core material. This is a comparison of changes after immersion of a molding joint material containing a glass substrate restraint material and a restraint material not containing a glass substrate restraint material for one month.
拘束材を入れた成型目地材の方は、長さ方向および幅方向の膨張が拘束され、厚さ方向にのみ膨張（t=10mm→14mm）している。一方、拘束材の入っていない成型目地材の方は、厚さ方向の膨張（t=10mm→12mm）が少なく、長さ方向および幅方向への膨張があるため正面視形状が蛇行状に変化している。 The molding joint material containing the constraining material is constrained in expansion in the length direction and width direction, and expands only in the thickness direction (t = 10 mm → 14 mm). On the other hand, the molding joint material without constraint material has less expansion in the thickness direction (t = 10mm → 12mm), and the expansion in the length direction and width direction changes the shape of the front view to meandering doing.
この試験結果より、芯材にガラスの基材を用いることで厚さ方向への膨張性が高まり、止水効果の向上が図られることがわかる。 From this test result, it can be seen that by using a glass substrate as the core material, the expandability in the thickness direction is increased, and the water stop effect is improved.
以上、本発明に係る成型目地材について、実施形態に基づいて説明したが本発明はこれに限定されるものではなく、本発明の目的を達成でき、かつ発明の要旨を逸脱しない範囲内で種々設計変更が可能であり、それらも全て本発明の範囲内に包含されるものである。 The molding joint material according to the present invention has been described above based on the embodiment. However, the present invention is not limited to this embodiment, and various objects can be achieved without departing from the spirit of the invention. Design changes are possible and all fall within the scope of the present invention.
例えば、上記実施の形態では、芯材としてガラス基材を用いているが、ＣＲゴムやステンレスを拘束材として用いてもよい。 For example, in the above embodiment, a glass base material is used as the core material, but CR rubber or stainless steel may be used as the restraining material.
本発明は、舗装路面や橋梁等のジョイント部や端部の目地から水の浸入を防止する成型目地材として有用である。 INDUSTRIAL APPLICABILITY The present invention is useful as a molded joint material that prevents water from entering from joints and end joints such as paved road surfaces and bridges.
１ 成型目地材
２ 路盤
３ 基層
４ 路面表層
５ コンクリート床版
６ レベリング層
７ 表層
８ 橋梁端部
DESCRIPTION OF SYMBOLS 1 Molding joint material 2 Roadbed 3 Base layer 4 Road surface layer 5 Concrete floor slab 6 Leveling layer 7 Surface layer 8 Bridge edge
Claims (5)
ことを特徴とする成型目地材。 A molded joint material comprising an adhesive substance obtained by kneading synthetic rubber and a water-swellable resin.
前記水膨張性樹脂は、1-20wt%の濃度範囲で含まれている
ことを特徴とする請求項１記載の成型目地材。 The synthetic rubber is butyl rubber or chloroprene rubber and is contained in a concentration range of 50-85 wt%,
The molded joint material according to claim 1, wherein the water-swellable resin is contained in a concentration range of 1 to 20 wt%.
ことを特徴とする請求項１または２記載の成型目地材。 Furthermore, the core material which suppresses expansion | swelling of a length direction and the width direction is provided. The molding joint material of Claim 1 or 2 characterized by the above-mentioned.
ことを特徴とする請求項３記載の成型目地材。 The molding joint material according to claim 3, wherein the core material is a glass base material.
舗装の継ぎ目、舗装端部または橋梁舗装端部の目地に設置する
ことを特徴とする止水方法。 The molding joint material according to any one of claims 1 to 4,
A water stop method, characterized by being installed at joints of pavement joints, pavement edges or bridge pavement edges.
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Cited By (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023020326A (en) * | 2021-07-30 | 2023-02-09 | アオイテクノサービス株式会社 | Construction method for tie-in part between concrete pavement and asphalt pavement, and elastic strip for tie-in part used for the same |
| JP7502750B2 (en) | 2021-07-30 | 2024-06-19 | アオイテクノサービス株式会社 | Method of construction of joint between concrete pavement and asphalt pavement and elastic strip for use in said joint |
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