JP2005090183A - Construction method for asphalt pavement - Google Patents
Construction method for asphalt pavement Download PDFInfo
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- JP2005090183A JP2005090183A JP2003328724A JP2003328724A JP2005090183A JP 2005090183 A JP2005090183 A JP 2005090183A JP 2003328724 A JP2003328724 A JP 2003328724A JP 2003328724 A JP2003328724 A JP 2003328724A JP 2005090183 A JP2005090183 A JP 2005090183A
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Abstract
Description
本発明は、アスファルト舗装に関し、防水ウレタン層を有するコンクリート床版もしくは鋼床版との接着に好適なアスファルト舗装の施工方法に関するものである。 The present invention relates to an asphalt pavement, and more particularly to an asphalt pavement construction method suitable for bonding to a concrete floor slab having a waterproof urethane layer or a steel floor slab.
従来、道路工事のアスファルト舗装において、床版にプライマーを塗布、該プライマーの硬化乾燥後ウレタン又はウレアからなる防水材を塗工し、該面にウレタンプライマー、さらにエポキシ樹脂を塗布し、次いで該表面にアスファルトと骨材とからなる合材を敷設し転圧する方法、床版にプライマーを塗布、該プライマーの硬化乾燥後ウレタン又はウレアからなる防水材を塗工し、該面にゴム溶剤系接着剤又エチレン酢酸ビニル共重合体のペレットを敷設し、次いで該表面に合材を敷設し転圧する方法、床版面に防水性能を有するホットメルト接着剤を施工し、次いで該表面に合材を敷設し転圧する方法等がある。 Conventionally, in asphalt pavement for road construction, a primer is applied to the floor slab, and after the primer is cured and dried, a waterproof material made of urethane or urea is applied, and a urethane primer and an epoxy resin are applied to the surface, and then the surface A method of laying and rolling a composite material comprising asphalt and aggregate on the surface, applying a primer to the floor slab, applying a waterproof material made of urethane or urea after curing and drying the primer, and a rubber solvent adhesive on the surface Also, a method of laying pellets of ethylene vinyl acetate copolymer, then laying the composite material on the surface and rolling it, applying a hot melt adhesive having waterproof performance on the floor slab surface, and then laying the composite material on the surface There is a method of rolling.
しかし、防水層とアスファルトとの接着が十分に満足できるものではなく、防水性能及び接着性能ともに優れる床版防水工法の開発が要求されている。特に降雨後の吸水状態の床版への接着性は不十分であり、また、ウレタン、ウレア、ウレタンウレアからなる防水材は、アスファルトと骨材からなる合材層との接着が困難であり、床版防水用には不適とされている。 However, the adhesion between the waterproof layer and the asphalt is not fully satisfactory, and development of a floor slab waterproofing method that is excellent in both waterproof performance and adhesive performance is required. In particular, the adhesion to water-absorbed floor slabs after rain is insufficient, and the waterproof material made of urethane, urea, urethane urea is difficult to bond with the composite layer made of asphalt and aggregate, It is not suitable for floor slab waterproofing.
そこで、本発明では上記従来技術に伴う問題点を解決しようとするものであって、吸水状態の床版及び防水層と合材との接着が改良された優れたアスファルト舗装工法を提供することにある。 Therefore, the present invention is intended to solve the problems associated with the above prior art, and to provide an excellent asphalt pavement method in which adhesion between a water-absorbed floor slab and a waterproof layer and a composite is improved. is there.
本発明によれば、前記目的を達成するため、床版にプライマーを塗布、該プライマーの硬化乾燥後ウレタン又はウレアからなる防水材を塗工後、ポリオレフィン系樹脂を基材とし、貫通する空隙を有するシートを敷設し、次いで該表面に合材を敷設し転圧することを特徴とするものである。 According to the present invention, in order to achieve the above-mentioned object, a primer is applied to a floor slab, and after the primer is cured and dried, a waterproof material made of urethane or urea is applied, and then a polyolefin resin is used as a base material, and a void passing therethrough is formed. A sheet having the above structure is laid, and then a composite material is laid on the surface and rolled.
本発明において、該シートの厚みは、好ましくは０．７〜１．２ｍｍ、それより薄い場合は接着力に劣り、厚い場合は完全にシートが融けず、接着力に劣る。樹脂層と空隙の表面積の比は、４０〜７０：６０〜３０、空隙の比が６０より大きい場合は樹脂量が少なく接着力に劣り、空隙の比が３０より少ない場合は吸水状態の床版及び防水層から水が蒸発しにくい。 In the present invention, the thickness of the sheet is preferably 0.7 to 1.2 mm, and if it is thinner than that, the adhesive strength is inferior. If it is thick, the sheet does not melt completely and the adhesive strength is inferior. The ratio of the surface area of the resin layer to the void is 40 to 70:60 to 30, and when the void ratio is greater than 60, the resin amount is small and the adhesive strength is poor, and when the void ratio is less than 30, the floor slab is in a water absorption state. And water hardly evaporates from the waterproof layer.
本発明の方法によれば、防水ウレタン層の上に貫通する空隙を有するポリオレフィン樹脂製の接着剤シートを敷設することにより、吸水状態の床版及び防水層から水が蒸発しやすい。 According to the method of the present invention, water is easily evaporated from a floor slab and a waterproof layer in a water-absorbing state by laying an adhesive sheet made of polyolefin resin having a gap penetrating on the waterproof urethane layer.
また、基材がポリオレフィンのため、アスファルトの熱で融けて接着効果を示し、他の接着剤や溶剤が不要である。 In addition, since the base material is polyolefin, it melts with the heat of asphalt and exhibits an adhesive effect, and other adhesives and solvents are unnecessary.
本発明に係るアスファルト舗装工法は、床版、防水材、合材（アスファルト舗装材）からなる複合構造体の施工方法において、床版に硬化性プライマーを塗布し、該硬化性プライマーを半硬化の状態まで固化した後、硬化性ウレタン、硬化性ウレア、硬化性ウレタンウレアから選ばれる少なくとも１種の防水材を０．３〜４（ｋｇ／ｍ２）塗布し、該防水材を半硬化状態とした後、ポリオレフィン樹脂製の接着剤シートを敷設し、次いで該表面に舗装用熱アスファルトコンクリートを敷設し、転圧する工法である。 The asphalt pavement method according to the present invention is a method for constructing a composite structure comprising a floor slab, a waterproof material, and a composite material (asphalt pavement material). A curable primer is applied to the floor slab, and the curable primer is semi-cured. After solidifying to a state, 0.3 to 4 (kg / m 2) of at least one waterproof material selected from curable urethane, curable urea, and curable urethane urea was applied to make the waterproof material semi-cured. Thereafter, an adhesive sheet made of a polyolefin resin is laid, and then heat asphalt concrete for pavement is laid on the surface, followed by rolling.
このような本発明の床版防水工法に用いられる、吸水状態の床版表面であっても強固に接着剤としては、ポリオレフィン樹脂製シート、エチレン−酢酸ビニル共重合体ケン化物及び／又は該カルボキシル変性物等が挙げられるが、床版への接着性及び作業性の点で、ポリオレフィン樹脂製シートが望ましい。 Even if it is the surface of the floor slab in a water-absorbing state used in the floor slab waterproofing method of the present invention, as a strong adhesive, a polyolefin resin sheet, an ethylene-vinyl acetate copolymer saponified product and / or the carboxyl Examples include modified products, but a polyolefin resin sheet is desirable in terms of adhesion to the floor slab and workability.
貫通する空隙を有するポリオレフィン樹脂製シートの製造方法は、従来公知の方法が適用でき、例えば、溶融した樹脂を版胴面に付着させ、ドクターブレードと呼ばれる鋼鉄の薄い刃により過剰樹脂を掻き取り、版のセルのみに樹脂の定量塗布を行い、成形する方法がある。 A conventionally known method can be applied to the method for producing the polyolefin resin sheet having voids penetrating through, for example, the molten resin is attached to the plate cylinder surface, and the excess resin is scraped off by a thin blade of steel called a doctor blade. There is a method in which a resin is quantitatively applied only to a plate cell and molded.
前記ポリオレフィン樹脂製シートとしては、例えば、ポリエチレン、エチレン−酢酸ビニル共重合体、エチレンエチルアクリレート、ポリプロピレン、ポリテトラフルオロエチレン、エチレン−プロピレン共重合体、ポリ−４−メチル−１−ペンテン、ポリビニルクロライド、ポリビニリデンクロライド、ポリビニリデンフルオライド、テトラフルオロエチレン、エチレン共重合体等からなるシートを挙げられるが、接着性の点からエチレン−酢酸ビニル共重合体及びエチレンエチルアクリレートが好ましく、ＤＳＣ融点は１００℃以下が好ましく、ＭＦＲは、３．０ｇ／１０分以上が好ましい。この範囲以外であると、接着性に劣ることになる。 Examples of the polyolefin resin sheet include polyethylene, ethylene-vinyl acetate copolymer, ethylene ethyl acrylate, polypropylene, polytetrafluoroethylene, ethylene-propylene copolymer, poly-4-methyl-1-pentene, and polyvinyl chloride. , Polyvinylidene chloride, polyvinylidene fluoride, tetrafluoroethylene, ethylene copolymer, and the like, but from the viewpoint of adhesion, ethylene-vinyl acetate copolymer and ethylene ethyl acrylate are preferable, and DSC melting point is 100. ° C or less is preferable, and MFR is preferably 3.0 g / 10 min or more. If it is outside this range, the adhesiveness is poor.
ＪＩＳマーク入りコンクリート板（市販品、ＪＩＳＡ−５３０４）の表面に湿気硬化型ウレタン樹脂プライマーを塗布し、３０分後、防水材（リムスプレーＲ−２０００）を２．２（ｋｇ／ｍ２）、プロブラーガンで吹き付けた。３０分後、エチレン−酢酸ビニル共重合体からなるシート（ＤＳＣ融点６６℃、ＭＦＲ：３０ｇ／１０分、厚み１．０ｍｍ、シートと空隙の表面積の比率 ６０：４０）を敷設し、予め１８５℃で混合した合材を厚さ５ｃｍになるように敷設、転圧してしたところ、コンクリート板と合材との接着は十分な強度を有していた。 Apply a moisture-curing urethane resin primer to the surface of a concrete plate with a JIS mark (commercially available, JISA-5304), and after 30 minutes, apply waterproofing material (rim spray R-2000) to 2.2 (kg / m2), professional I sprayed it with a blur gun. After 30 minutes, a sheet made of an ethylene-vinyl acetate copolymer (DSC melting point 66 ° C., MFR: 30 g / 10 minutes, thickness 1.0 mm, sheet to void surface area ratio 60:40) was laid, and 185 ° C. in advance. When the composite material mixed in (1) was laid and rolled to a thickness of 5 cm, the adhesion between the concrete plate and the composite material had sufficient strength.
実施例１の接着剤をエチレン−酢酸ビニル共重合体からなるシートの代わりに、アスファルト１００重量部に対しエチレン−酢酸ビニル共重合体ケン化物及び／又は該カルボキシル変性物５３重量部を添加した接着剤を使用して、合材を敷設、転圧したところ、接着強度は実施例１より劣っていた。 Adhesive of Example 1 in which 53 parts by weight of ethylene-vinyl acetate copolymer saponified product and / or carboxyl modified product was added to 100 parts by weight of asphalt instead of the sheet made of ethylene-vinyl acetate copolymer When the compound material was laid and rolled using the agent, the adhesive strength was inferior to that of Example 1.
実施例１において、エチレン酢酸ビニル共重合体よるなるシートの替わりにエチレンエチルアクリレート（ＤＳＣ融点８７℃、ＭＦＲ：２５ｇ／１０分、厚み０．８ｍｍ、シートと空隙の表面積の比率 ６０：４０）を使用した結果、実施例１と同様に接着性に優れていた。 In Example 1, instead of a sheet made of an ethylene vinyl acetate copolymer, ethylene ethyl acrylate (DSC melting point 87 ° C., MFR: 25 g / 10 min, thickness 0.8 mm, ratio of sheet to void surface area 60:40) was used. As a result of use, the adhesiveness was excellent as in Example 1.
実施例１において、貫通する空隙を有しないエチレン酢酸ビニル共重合体よるなるシートを使用した結果、接着性に優れていたが、下面に水蒸気が溜まり、膨れが生じた。 In Example 1, as a result of using a sheet made of an ethylene-vinyl acetate copolymer having no through-holes, the adhesiveness was excellent, but water vapor was accumulated on the lower surface, resulting in swelling.
本発明は、アスファルト舗装に関し、防水ウレタン層を有するコンクリート床版もしくは鋼床版との接着に好適なアスファルト舗装の施工である。 The present invention relates to asphalt pavement, and is an asphalt pavement suitable for bonding to a concrete slab or a steel slab having a waterproof urethane layer.
１ コンクリート床板
２ 防水ウレタン層
３ 接着剤シート
４ アスファルト
1
Claims (1)
Before laying an upper layer made of asphalt concrete or goose asphalt, an adhesive sheet made of polyolefin resin having a through-hole is preliminarily received, and an upper layer made of a concrete floor plate or a steel floor plate having a waterproof urethane layer is received. Laying on the support layer, and then laying heated asphalt concrete or goose asphalt on the adhesive sheet, and melting the adhesive sheet by heating, the upper layer and the support layer are integrated. Asphalt pavement construction method characterized by
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| JP2003328724A JP2005090183A (en) | 2003-09-19 | 2003-09-19 | Construction method for asphalt pavement |
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| JP2003328724A JP2005090183A (en) | 2003-09-19 | 2003-09-19 | Construction method for asphalt pavement |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088211A (en) * | 2014-06-25 | 2014-10-08 | 中国水利水电第十三工程局有限公司 | Flexible asphalt concrete pavement construction method |
| CN104328730A (en) * | 2014-09-26 | 2015-02-04 | 杭州江润科技有限公司 | Construction method for transforming cement concrete pavement with embedded reinforced asphalt layer |
| CN104652269A (en) * | 2015-02-11 | 2015-05-27 | 上海市政工程设计研究总院（集团）有限公司 | Bridge deck pavement structure for orthotropic steel bridge |
| CN104975563A (en) * | 2014-04-11 | 2015-10-14 | 中铁工程设计咨询集团有限公司 | Bridge deck pavement structure and method for steel bridge deck slab |
| CN105113351A (en) * | 2015-08-06 | 2015-12-02 | 中国水利水电第六工程局有限公司 | Concrete pavement structure in alpine region and construction method thereof |
-
2003
- 2003-09-19 JP JP2003328724A patent/JP2005090183A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975563A (en) * | 2014-04-11 | 2015-10-14 | 中铁工程设计咨询集团有限公司 | Bridge deck pavement structure and method for steel bridge deck slab |
| CN104088211A (en) * | 2014-06-25 | 2014-10-08 | 中国水利水电第十三工程局有限公司 | Flexible asphalt concrete pavement construction method |
| CN104328730A (en) * | 2014-09-26 | 2015-02-04 | 杭州江润科技有限公司 | Construction method for transforming cement concrete pavement with embedded reinforced asphalt layer |
| CN104328730B (en) * | 2014-09-26 | 2016-06-08 | 杭州江润科技有限公司 | The construction method of embedded reinforcement bitumen layer transformation cement concrete pavement |
| CN104652269A (en) * | 2015-02-11 | 2015-05-27 | 上海市政工程设计研究总院（集团）有限公司 | Bridge deck pavement structure for orthotropic steel bridge |
| CN105113351A (en) * | 2015-08-06 | 2015-12-02 | 中国水利水电第六工程局有限公司 | Concrete pavement structure in alpine region and construction method thereof |
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