JPH11256504A - Repair material and repair method for slab type track - Google Patents
Repair material and repair method for slab type trackInfo
- Publication number
- JPH11256504A JPH11256504A JP6488498A JP6488498A JPH11256504A JP H11256504 A JPH11256504 A JP H11256504A JP 6488498 A JP6488498 A JP 6488498A JP 6488498 A JP6488498 A JP 6488498A JP H11256504 A JPH11256504 A JP H11256504A
- Authority
- JP
- Japan
- Prior art keywords
- repair
- slab
- base material
- repairing
- repair material
- 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.)
- Granted
Links
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- Machines For Laying And Maintaining Railways (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、コンクリート製の
軌道スラブにレールを直結した構造のスラブ式軌道にお
いて、軌道スラブと路盤側構造物との間に緩衝材として
設けられた填充層を補修するための補修材料及び補修方
法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention repairs a filling layer provided as a cushioning material between a track slab and a roadbed-side structure in a slab track having a rail directly connected to a concrete track slab. For repair materials and repair methods.
【0002】[0002]
【従来の技術】バラスト道床上に列べられた枕木にレー
ルを締結した構造のバラスト式軌道に代わって、保守管
理の省力化を図るため、図1に示すように、路盤コンク
リート1上に列べられたコンクリート製の軌道スラブ2
にレール3を直結した構造のスラブ式軌道が採用されて
いる。2. Description of the Related Art As an alternative to a ballast-type track having a structure in which rails are fastened to sleepers laid on a ballast ballast, as shown in FIG. Tracked concrete track slab 2
A slab track having a structure in which a rail 3 is directly connected to the slab is adopted.
【0003】このスラブ式軌道では、レール3を弾性的
に支持可能なように、軌道スラブ2と路盤コンクリート
1との間に、セメントとアスファルト乳剤と細骨材とを
混合したCAモルタル(セメントアスファルトモルタ
ル)による填充層4が設けられている。また、軌道スラ
ブ2に作用する横荷重を支持するために路盤コンクリー
ト1に立設された円柱状の突起5と軌道スラブ2との間
にも前記と同様のCAモルタルによる填充層6が設けら
れている。In this slab track, CA mortar (cement asphalt) in which cement, asphalt emulsion and fine aggregate are mixed between the track slab 2 and the roadbed concrete 1 so that the rail 3 can be elastically supported. (Mortar). In addition, between the columnar projection 5 erected on the roadbed concrete 1 and the track slab 2 to support the lateral load acting on the track slab 2, the same filling layer 6 made of CA mortar as described above is provided. ing.
【0004】このCAモルタルによる填充層4・6は、
軌道スラブ2に作用するレール3の温度応力や列車の遠
心力等の外力によって劣化・疲労が進行するが、特に豪
雪地域では、露出部分からしみ込んだ水分が凍結・融解
を繰り返して劣化を早めるため、比較的短期間のうちに
補修が必要となる。[0004] The filling layers 4.6 by CA mortar are:
Deterioration / fatigue progresses due to external stresses such as the temperature stress of the rail 3 acting on the track slab 2 and the centrifugal force of trains. Repairs are required within a relatively short period of time.
【0005】このようなCAモルタル填充層4・6の補
修には、列車の運行がない夜間の短時間のうちに作業を
終了して早期に所要の強度を発現可能なように、迅速に
硬化可能な補修材料が用いられている。具体的には、ス
ラブ下部填充層4の補修では、軌道スラブ2の弾性支持
に必要なばね特性や圧縮強度等の要求を満足するものと
して二液型のウレタン樹脂が採用されており、他方、突
起周り填充層6の補修では、急速に硬化可能なように改
良された速硬性のCAモルタル、ポリエステル樹脂モル
タル、並びに前記と同様のウレタン樹脂が用いられてい
る。[0005] In repairing such CA mortar filling layers 4 and 6, rapid hardening is performed so that work can be completed within a short time at night when there is no train operation and the required strength can be developed early. Possible repair materials are used. Specifically, in the repair of the lower slab filling layer 4, a two-pack type urethane resin is employed to satisfy requirements such as spring characteristics and compressive strength required for elastic support of the track slab 2, In repairing the protrusion surrounding filling layer 6, a quick-setting CA mortar, a polyester resin mortar, and a urethane resin similar to those described above, which are improved so that they can be rapidly cured, are used.
【0006】[0006]
【発明が解決しようとする課題】ところで、前記のウレ
タン樹脂は未硬化時に流動性を示すことから、スラブ下
部填充層4の補修においては、ウレタン樹脂が流れ出さ
ないように側方に型枠を設置したり、あるいは不織布製
のチューブで注入したりする補修方法が採用されてい
る。ところが、前者の型枠を用いる方法では、型枠の設
置及び撤去作業が必要となり、作業が煩雑化して補修に
長時間を要することになる。後者の不織布製チューブを
用いる工法では、隅々まで補修材料がまわらずに空隙が
生じることがあり、安定した強度が得られ難い。特に、
冬場にはウレタン樹脂の粘性が増大することから、空隙
のない密実な補修層を得るため、注入にあたり十分に加
温する必要があり、作業に手間と時間を要する。However, since the urethane resin has fluidity when it is not cured, when the slab lower filling layer 4 is repaired, a mold is laterally formed so that the urethane resin does not flow out. A repair method of installing or injecting with a non-woven tube is adopted. However, in the former method using the formwork, the work of installing and removing the formwork is required, and the work is complicated, and the repair takes a long time. In the latter method using a nonwoven fabric tube, the repair material may not reach all corners and voids may be formed, and it is difficult to obtain stable strength. Especially,
In winter, the viscosity of the urethane resin increases, so that it is necessary to sufficiently heat the injection to obtain a solid repair layer without voids, which requires labor and time.
【0007】一方、突起周り填充層6の補修に用いられ
ている速硬性CAモルタルは、低温状態での硬化に長時
間を要するため、冬場の作業性が悪いといった不都合が
ある。また、ポリエステル樹脂モルタルは熱収縮による
ひび割れが発生し易く、硬質で柔軟性に乏しく補修材料
として最適とは言い難い。一方、ウレタン樹脂は高価で
ある上に、クラックへの浸透性が十分でなく、クラック
の発生が顕著な突起周り填充層6の補修には適していな
い。On the other hand, the quick-hardening CA mortar used for repairing the protrusion surrounding filling layer 6 requires a long time to cure in a low temperature state, and thus has a disadvantage that workability in winter is poor. Further, the polyester resin mortar is liable to crack due to heat shrinkage, is hard, has poor flexibility, and is not optimal as a repair material. On the other hand, the urethane resin is expensive and does not have sufficient permeability to cracks, and is not suitable for repairing the protrusion filling layer 6 where cracks are remarkable.
【0008】本発明は、このような従来技術の問題点を
解消するために案出されたものであり、その第1の目的
は、所要の物性を備え、かつ冬場でも迅速に硬化可能で
あり、さらに低コストで作業性に優れた補修材料を提供
することにある。また、本発明の第2の目的は、作業能
率が良く、短時間で施工ができ、かつ強度の安定した補
修層が得られる補修方法を提供することにある。The present invention has been devised in order to solve such problems of the prior art. The first object of the present invention is to provide required physical properties and to quickly cure even in winter. Another object of the present invention is to provide a repair material which is low in cost and excellent in workability. Further, a second object of the present invention is to provide a repairing method which has a good working efficiency, can be constructed in a short time, and can provide a repairing layer having a stable strength.
【0009】[0009]
【課題を解決するための手段】前記第1の目的を果たす
ために、本発明においては、軌道スラブと路盤側構造物
との間の填充層の補修に用いられる補修材料を、ラジカ
ル硬化性を有する合成樹脂を基材とし、これに高分子弾
性材の小片と無機骨材とを混合すると共に、前記基材の
硬化剤を添加してなるものとした。In order to achieve the first object, in the present invention, a repair material used for repairing a filling layer between a track slab and a roadbed-side structure has a radical curability. A synthetic resin having the same as a base material, a small piece of a polymer elastic material and an inorganic aggregate were mixed with the base material, and a curing agent for the base material was added thereto.
【0010】これによると、基材にラジカル重合によっ
て硬化する合成樹脂を採用したため、硬化剤としてラジ
カル重合開始剤を添加することにより、低温状態におい
ても迅速に硬化して短時間で所要の強度を発現可能であ
る。しかも、高分子弾性材の小片は補修層の弾性を、無
機骨材は補修層の圧縮強度をそれぞれ高めるように機能
し、これら高分子弾性材の小片並びに無機骨材の配合割
合を調整することにより、補修層の圧縮強度並びにばね
定数を軌道スラブの弾性支持に適合した所要の値に設定
することができる。さらに、基材樹脂の硬化時に発生す
る反応熱が高分子弾性材の小片や無機骨材に吸収される
ことで温度上昇が抑制されるため、硬化収縮によるクラ
ックの発生を防止することができる。According to this, since a synthetic resin which is cured by radical polymerization is used for the base material, by adding a radical polymerization initiator as a curing agent, it cures quickly even in a low temperature state and has a required strength in a short time. Can be expressed. In addition, the small pieces of the polymer elastic material function to increase the elasticity of the repair layer, and the inorganic aggregate functions to increase the compressive strength of the repair layer, and the mixing ratio of the small piece of the polymer elastic material and the inorganic aggregate is adjusted. Accordingly, the compressive strength and the spring constant of the repair layer can be set to required values suitable for the elastic support of the track slab. Further, since the reaction heat generated during the curing of the base resin is absorbed by the small pieces of the polymer elastic material and the inorganic aggregate, the temperature rise is suppressed, so that cracks due to curing shrinkage can be prevented.
【0011】これに加えて、前記基材となるラジカル硬
化性の合成樹脂がポリエステルアクリレートを主成分と
するものであると好ましい。これによると、所要の圧縮
強度並びにばね特性を確保するのに適しており、しかも
比較的安価で、かつ耐久性に優れている。前記ポリエス
テルアクリレートは、より具体的には、無溶剤型ビニル
エステル樹脂や変性MMA樹脂であると良い。無溶剤型
ビニルエステル樹脂は、スチレン等の溶剤に溶解されて
おらず、後に説明するようにシリカパウダー等により揺
変性(チキソトロピー)を与えることによりスラブ下部
填充層の補修に適したものとすることができる。他方、
変性MMA樹脂は、架橋剤となるモノマーの一部をメチ
ルメタクリレート(MMA)としたもので、粘性を比較
的低く調整することによりクラックへの浸透性に優れた
ものとすることができ、軌道スラブと突起との間の突起
周り填充層の補修に適している。In addition, it is preferable that the radical-curable synthetic resin serving as the base material is mainly composed of polyester acrylate. According to this, it is suitable for securing required compressive strength and spring characteristics, and is relatively inexpensive and excellent in durability. More specifically, the polyester acrylate is preferably a solventless vinyl ester resin or a modified MMA resin. Solvent-free vinyl ester resin is not dissolved in a solvent such as styrene, and should be suitable for repairing the lower slab filling layer by giving thixotropic properties (thixotropic) with silica powder or the like as described later. Can be. On the other hand,
The modified MMA resin is obtained by using methyl methacrylate (MMA) as a part of the monomer serving as a cross-linking agent. By adjusting the viscosity to be relatively low, it is possible to obtain a resin having excellent permeability to cracks. It is suitable for repairing a layer surrounding the protrusion between the protrusion and the protrusion.
【0012】さらに、前記の高分子弾性材の小片は古タ
イヤを切断してなるゴムチップであると好ましい。これ
によると、所要の圧縮強度並びにばね特性を確保するの
に適しており、しかも廃物利用によって安価に得ること
ができるため、大幅なコスト低減が可能となる。この他
の高分子弾性材としては、ウレタン樹脂、あるいはエチ
レン酢酸ビニル共重合樹脂(EVA樹脂)等の合成樹脂
からなるものでも良く、この場合、基材樹脂の溶剤に容
易に溶解しない物性を有するものが望ましい。Further, it is preferable that the small piece of the polymer elastic material is a rubber chip obtained by cutting an old tire. According to this, it is suitable for securing required compressive strength and spring characteristics, and can be obtained at low cost by using wastes, so that significant cost reduction is possible. The other polymer elastic material may be made of a synthetic resin such as a urethane resin or an ethylene-vinyl acetate copolymer resin (EVA resin). In this case, the polymer elastic material has properties that do not easily dissolve in the solvent of the base resin. Things are desirable.
【0013】また、前記の無機骨材は珪砂であると好ま
しい。無機骨材には、基材樹脂のラジカル硬化反応を阻
害しない物性を有するもので、粒径が概ね0.5mm〜
5mmのものが望ましく、これより大径であると基材樹
脂との混合攪拌操作や充填作業時の作業性が悪化する。
これらの条件を満足する無機骨材としては、コストや入
手の容易さから珪砂が最も適している。なお、この他の
無機骨材としては、ボーキサイト等の天然鉱産物、磁器
やセラミック等の焼成物、並びに高炉スラグ等が挙げら
れる。The inorganic aggregate is preferably silica sand. The inorganic aggregate has properties that do not inhibit the radical curing reaction of the base resin, and the particle size is approximately 0.5 mm to
A diameter of 5 mm is desirable. If the diameter is larger than this, the workability during the mixing and stirring operation with the base resin and the filling operation deteriorates.
As the inorganic aggregate satisfying these conditions, silica sand is most suitable from the viewpoint of cost and availability. Examples of other inorganic aggregates include natural mineral products such as bauxite, fired products such as porcelain and ceramics, and blast furnace slag.
【0014】特に、軌道スラブと路盤コンクリートとの
間のスラブ下部填充層の補修に使用する場合には、シリ
カパウダーが添加されていると好ましい。これによる
と、基材樹脂に揺変性(チキソトロピー)を付与するこ
とができ、形崩れし難く型枠を設けることなくこて作業
で充填可能なものとなり、スラブ下部填充層の補修にお
ける作業性を大幅に向上させることができる。しかも、
この基材樹脂の揺変性により無機骨材や高分子弾性材の
小片の沈降を防止する効果が得られる。なお、基材樹脂
に揺変性を付与するには、この他、いわゆる体質顔料系
の微粉末でも良いが、コストや入手の容易さ、並びに基
材樹脂のラジカル硬化反応を阻害しない点でシリカパウ
ダーが最適である。In particular, when used for repairing a slab lower filling layer between a track slab and a roadbed concrete, it is preferable that silica powder is added. According to this, thixotropy can be imparted to the base resin, which makes it difficult to lose shape and can be filled by trowel work without providing a formwork. It can be greatly improved. Moreover,
By the thixotropic property of the base resin, an effect of preventing the sedimentation of small pieces of the inorganic aggregate and the elastic polymer can be obtained. In order to impart thixotropic properties to the base resin, a so-called extender-based fine powder may be used. However, silica powder is not preferred because of its low cost, easy availability, and not inhibiting the radical curing reaction of the base resin. Is optimal.
【0015】また、前記第2の目的を果たすために、本
発明においては、軌道スラブと路盤側構造物との間の填
充層を補修するにあたり、填充層の劣化部分を削り取っ
た後、ラジカル硬化性を有する合成樹脂を基材とし、こ
れに骨材として高分子弾性材の小片と無機骨材とを混合
すると共に前記基材の硬化剤を添加して得られた補修材
料を充填するものとした。これによると、所要の圧縮強
度並びにばね特性を有する補修層を迅速に形成可能とな
り、効率良く補修作業を行うことができる。In order to achieve the second object, according to the present invention, in repairing a filling layer between a track slab and a roadbed-side structure, a degraded portion of the filling layer is scraped off and then cured by radical hardening. A synthetic resin having the property of being a base material, and mixing a small piece of a polymer elastic material and an inorganic aggregate as an aggregate with this, and filling a repair material obtained by adding a curing agent for the base material; did. According to this, the repair layer having the required compressive strength and spring characteristics can be quickly formed, and the repair work can be performed efficiently.
【0016】特に、バイブレータを用いて補修材料に振
動を加えながら充填すると好ましい。これによると、空
隙のない密実な補修層を手際良く形成することができ
る。In particular, it is preferable to fill the repair material while applying vibration to the repair material using a vibrator. According to this, a solid repair layer without voids can be formed skillfully.
【0017】[0017]
【発明の実施の形態】以下に、本発明の実施の形態を添
付の図面を参考にして詳細に説明する。Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
【0018】本発明による軌道スラブの補修材料は、前
記のように、ラジカル硬化性の合成樹脂を基材とし、こ
れに高分子弾性材の小片と無機骨材とを混合すると共に
基材の硬化剤を添加してなるものであり、これらの材料
を現場にて秤量の上、ハンドミキサー等で攪拌混合する
ことで調製することができる。なお、以下の記載におい
て特に断らない限り「部」は「重量部」を意味する。The repair material for the track slab according to the present invention is, as described above, made of a radical-curable synthetic resin as a base material, mixed with a small piece of a polymer elastic material and an inorganic aggregate, and cured of the base material. It can be prepared by weighing these materials on site and stirring and mixing them with a hand mixer or the like. In the following description, “parts” means “parts by weight” unless otherwise specified.
【0019】まず、図1に示した軌道スラブ2と路盤コ
ンクリート1との間のスラブ下部填充層4の補修に用い
られる補修材料においては、基材樹脂に無溶剤型ビニル
エステル樹脂を用いる。この基材樹脂には予めシリカパ
ウダーが添加され、粘度が350〜650ポイズに調製
されており、揺変性を有するゼリー状をなしている。こ
の基材樹脂の単体硬化時の力学特性は、引っ張り強さが
80〜160kg/cm2、伸び率が65〜125%、
引き裂き強さが40kg/cm2以上、ショアーD硬度
が44〜82となるものとする。なお、シリカパウダー
は現場での調合時に添加することも可能である。First, in a repair material used for repairing the slab lower filling layer 4 between the track slab 2 and the roadbed concrete 1 shown in FIG. 1, a solventless vinyl ester resin is used as a base resin. Silica powder is added to this base resin in advance, the viscosity is adjusted to 350 to 650 poise, and the base resin is in the form of a thixotropic jelly. The mechanical properties of the base resin at the time of curing alone include a tensile strength of 80 to 160 kg / cm 2 , an elongation of 65 to 125%,
The tear strength shall be 40 kg / cm 2 or more, and the Shore D hardness shall be 44 to 82. It should be noted that the silica powder can be added at the time of on-site preparation.
【0020】高分子弾性材の小片には古タイヤを5mm
程度の粒径に切断したゴムチップを使用する。このゴム
チップは特に化学的な処理は不要である。このゴムチッ
プは、合成樹脂100部に対して25乃至60部、望ま
しくは40部の割合で用いる。無機骨材には硅砂を使用
する。この硅砂は、合成樹脂100部に対して140乃
至260部、望ましくは200部の割合で用いる。5 mm old tires are used for small pieces of polymer elastic material.
Use rubber chips that have been cut to an approximate particle size. This rubber chip does not require any special chemical treatment. This rubber chip is used in a ratio of 25 to 60 parts, preferably 40 parts, per 100 parts of the synthetic resin. Silica sand is used for the inorganic aggregate. The silica sand is used in a ratio of 140 to 260 parts, preferably 200 parts, per 100 parts of the synthetic resin.
【0021】硬化剤には、粉状の過酸化ベンゾイル(B
PO)等の過酸化物を用いる。この硬化剤は、合成樹脂
100部に対して2〜6部の割合で添加され、添加量に
よって硬化時間を調整可能であるため、作業工程や温度
条件等に応じて適宜調整すれば良い。As a curing agent, powdery benzoyl peroxide (B
PO) or the like. The curing agent is added at a ratio of 2 to 6 parts with respect to 100 parts of the synthetic resin, and the curing time can be adjusted by the addition amount.
【0022】このようにしてなるスラブ下部填充層4の
補修材料は、未硬化状態で形崩れを起こし難く、こて作
業で効率良く充填作業を行うことができ、冬場でも1時
間程度で硬化可能である。一方、硬化時には20ton
f/cm±20%のばね定数を得ることができる。The repair material for the lower slab filling layer 4 thus formed is hardly deformed in an uncured state, can be efficiently filled by a trowel work, and can be cured in about one hour in winter. It is. On the other hand, at the time of curing
A spring constant of f / cm ± 20% can be obtained.
【0023】一方、軌道スラブ2と突起5との間の突起
周り填充層6での補修材料の基材樹脂には変性MMA樹
脂を用いる。この基材樹脂は、粘度が200〜700セ
ンチポイズに調製され、クラックへの浸透性が良好であ
る。また、単体硬化時の力学特性は、引っ張り強さが3
5〜65kg/cm2、伸び率が130〜250%、引
き裂き強さが10kg/cm2以上、ショアーD硬度が
36〜68となるものとする。On the other hand, a modified MMA resin is used as a base resin of a repair material in the filling layer 6 around the protrusion between the track slab 2 and the protrusion 5. This base resin is adjusted to have a viscosity of 200 to 700 centipoise and has good permeability to cracks. In addition, the mechanical properties at the time of curing of a simple substance are as follows.
5 to 65 kg / cm 2 , elongation percentage is 130 to 250%, tear strength is 10 kg / cm 2 or more, and Shore D hardness is 36 to 68.
【0024】ゴムチップ、硅砂並びに硬化剤は、前記ス
ラブ下部填充層4の場合と同一のものを使用する。ま
た、配合割合については、ゴムチップを前記と同様に合
成樹脂100部に対して25乃至60部、望ましくは4
0部の割合で用いるのに対して、硅砂は、合成樹脂10
0部に対して60乃至200部、望ましくは120部の
割合で用いる。The same rubber chips, silica sand and hardener as those used in the lower slab filling layer 4 are used. As for the compounding ratio, the rubber chip is 25 to 60 parts, preferably 4 parts, per 100 parts of the synthetic resin in the same manner as described above.
Silica sand is a synthetic resin 10
It is used in a proportion of 60 to 200 parts, preferably 120 parts, with respect to 0 parts.
【0025】このようにしてなる突起周り填充層6の補
修材料は、冬場でも30分程度で硬化可能であり、硬化
時には10tonf/cm±20%のばね定数を得るこ
とができる。The material for repairing the protrusion surrounding filling layer 6 can be cured in about 30 minutes even in winter, and a spring constant of 10 tonf / cm ± 20% can be obtained at the time of curing.
【0026】次に、図2に従ってスラブ下側填充層4の
補修手順について説明する。まず、図2(A)に示すよ
うに、填充層4の劣化部分を厚さ約50〜100mmに
渡って削り取る。このとき、回転式カッター21で粗削
りを行った後、皮すきを用いて劣化部分を丁寧に取り除
くようにすると良い。劣化部分の除去作業が終わると、
削り面に削りかすが残留しないように丁寧に清掃する。
また、削り部22が湿っていれば、適宜ガスバーナー等
を用いて乾燥させておく。そして、削り部22には汚れ
が付着しないように表面にテープを貼って養生する。隣
り合う軌道スラブ2相互の間隙部分にはバックアップ材
を詰め込んで養生する。Next, a procedure for repairing the lower slab filling layer 4 will be described with reference to FIG. First, as shown in FIG. 2 (A), the deteriorated portion of the filling layer 4 is scraped over a thickness of about 50 to 100 mm. At this time, it is preferable that after the rough cutting is performed by the rotary cutter 21, the deteriorated portion is carefully removed by using a skin. When the work of removing the deteriorated part is completed,
Clean carefully so that no shavings remain on the shaved surface.
If the shaving portion 22 is wet, it is dried using a gas burner or the like as appropriate. Then, a tape is stuck on the surface so as to prevent dirt from adhering to the shaved portion 22, and curing is performed. The gap between the adjacent track slabs 2 is filled with a backup material and cured.
【0027】次に、削り部22にプライマーを塗布した
上で補修材料の充填作業を始める。プライマーには補修
材料の合成樹脂と同一の合成樹脂が使用され、これに所
定割合の硬化剤を添加した上で刷毛やローラーを用いて
塗布する。Next, after applying the primer to the shaved portion 22, the work of filling the repair material is started. The same synthetic resin as the repair material is used for the primer, and a predetermined ratio of a hardening agent is added to the primer, and the primer is applied using a brush or a roller.
【0028】補修材料の充填作業では、まず、前記の要
領で調合された補修材料を適量、こてを用いて削り部2
2に配る。そして、図2(B)に示すように、補修材料
Aにあて木23を介してバイブレータ24で振動を加え
ながら押し込む。これで、補修材料Aが奥まで密実に充
填される。ついで、あて木23を取り去った上で、適宜
補修材料を加え、図2(C)に示すように、補修材料A
の表面が平滑になるように金ごてを用いて仕上げを行
う。In the work of filling the repair material, first, an appropriate amount of the repair material prepared in the above-described manner is used in a shaving portion 2 using a trowel.
Distribute to 2. Then, as shown in FIG. 2 (B), the material A is pressed into the repair material A while applying vibration with the vibrator 24 via the wood 23. Thus, the repair material A is densely and deeply filled. Then, after removing the addressing tree 23, a repair material is added as appropriate, and as shown in FIG.
Finishing is performed using a metal iron so that the surface becomes smooth.
【0029】図1に示した突起周り填充層6の補修も、
前記のスラブ下部填充層4の場合と概ね同様な手順で作
業が進められる。劣化部分の除去にはたがね等を用い、
劣化部分に水がしみ込んで凍結しているときは適宜ガス
バーナー等にて融解・乾燥させた上で作業を進める。隣
り合う軌道スラブ2相互の間隙部分は、こて作業が困難
であれば、バックアップ材を詰め込んで補修材料が広が
らないようにしておくと良い。充填作業が終了すると、
電球等の発熱体が内蔵された容器で上面側を覆って保温
することで硬化時間を短縮することができる。The repair of the filling layer 6 around the protrusions shown in FIG.
The work proceeds in substantially the same procedure as in the case of the slab lower filling layer 4 described above. Use a tip or the like to remove the deteriorated part,
If water has soaked into the deteriorated part and is frozen, thaw and dry with a gas burner or the like before proceeding. If ironing work is difficult in the gap between the adjacent track slabs 2, it is preferable to pack a backup material so that the repair material does not spread. When the filling operation is completed,
The curing time can be shortened by covering the upper surface side with a container having a built-in heating element such as a light bulb and keeping the temperature.
【0030】[0030]
【発明の効果】このように本発明による補修材料によれ
ば、基材にラジカル重合によって硬化する合成樹脂を採
用したため、冬場でも迅速に硬化して短時間で所要の強
度を発現可能となる。しかも、高分子弾性材の小片と無
機骨材との組み合わせにより、軌道スラブの弾性支持に
必要な圧縮強度並びにばね特性を確保することができ
る。さらに、これらの高分子弾性材の小片や無機骨材に
よりラジカル硬化反応時の温度上昇が抑制され、硬化収
縮によるクラックの発生を防止する効果が得られる。As described above, according to the repair material according to the present invention, since the synthetic resin which is cured by radical polymerization is used for the base material, it can be quickly cured even in winter and can exhibit the required strength in a short time. In addition, the combination of the small piece of the polymer elastic material and the inorganic aggregate can ensure the compressive strength and the spring characteristics required for the elastic support of the track slab. In addition, the small pieces of the polymer elastic material and the inorganic aggregate suppress the temperature rise during the radical curing reaction, and have an effect of preventing the occurrence of cracks due to curing shrinkage.
【0031】特に、前記のラジカル硬化性合成樹脂が例
えば前記無溶剤型ビニルエステル樹脂のようなポリエス
テルアクリレートを主成分とするものであると、所要の
圧縮強度並びにばね特性を確保可能である上に、コスト
を抑えると共に耐久性を高める上で効果的である。さら
に、高分子弾性材の小片に古タイヤを切断して得られる
ゴムチップを、無機骨材に珪砂をそれぞれ用いること
で、より一層のコスト低減が可能である。また、シリカ
パウダーを配合することにより形崩れし難くこて作業で
充填可能なものとすることができ、スラブ下部填充層の
補修における作業性を大幅に向上させることができる。In particular, when the radical-curable synthetic resin is mainly composed of a polyester acrylate such as the solvent-free vinyl ester resin, required compressive strength and spring characteristics can be secured. This is effective in reducing costs and increasing durability. Further, by using a rubber chip obtained by cutting an old tire into small pieces of a polymer elastic material and using silica sand as an inorganic aggregate, it is possible to further reduce costs. In addition, by blending silica powder, it is difficult to lose shape and can be filled by trowel work, so that workability in repairing the slab lower filling layer can be greatly improved.
【0032】また、本発明による補修方法によれば、所
要の圧縮強度並びにばね特性を有する補修層を迅速に形
成可能となり、効率の良い補修作業が可能となるため、
補修工事の工期を短縮すると共に工事費用を削減する上
で極めて顕著な効果がある。特に、バイブレータを用い
て補修材料に振動を加えながら充填するようにすると、
空隙のない密実で安定した強度を有する補修層を効率良
く形成する上で大きな効果が得られる。Further, according to the repairing method of the present invention, a repairing layer having required compressive strength and spring characteristics can be quickly formed, and efficient repairing work can be performed.
It has a remarkable effect in shortening the period of repair work and reducing construction costs. In particular, if the repair material is filled with vibration using a vibrator,
A large effect can be obtained in efficiently forming a repair layer having a solid and stable strength without voids.
【図1】スラブ式軌道を示す斜視図である。FIG. 1 is a perspective view showing a slab track.
【図2】A乃至Cからなり、本発明による補修方法に従
って軌道スラブと路盤コンクリートとの間のスラブ下部
填充層の補修作業状況を段階的に示す断面図である。FIG. 2 is a cross-sectional view showing steps A to C of repairing a slab underfill between a track slab and roadbed concrete in accordance with the repairing method according to the present invention.
1 路盤コンクリート 2 軌道スラブ 3 レール 4 スラブ下部填充層 5 突起 6 突起周り填充層 21 回転式カッター 22 削り部 23 あて木 24 バイブレータ A 補修材料 DESCRIPTION OF SYMBOLS 1 Roadbed concrete 2 Track slab 3 Rail 4 Slab lower filling 5 Projection 6 Protrusion surrounding filling 21 Rotary cutter 22 Shaving part 23 Dead wood 24 Vibrator A Repair material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小山内 政廣 東京都渋谷区代々木2丁目2番2号 東日 本旅客鉄道株式会社内 (72)発明者 伊藤 長市 東京都渋谷区代々木2丁目2番2号 東日 本旅客鉄道株式会社内 (72)発明者 岩松 健雄 東京都渋谷区代々木2丁目2番2号 東日 本旅客鉄道株式会社内 (72)発明者 佐藤 初男 東京都渋谷区代々木2丁目2番2号 東日 本旅客鉄道株式会社内 (72)発明者 倉橋 甫任 東京都千代田区神田錦町3丁目11番8号 武蔵野ビル 株式会社アレン内 (72)発明者 山本 史夫 東京都江東区新木場4丁目12番12号 神東 塗料株式会社内 (72)発明者 村田 吉隆 東京都江東区新木場4丁目12番12号 神東 塗料株式会社内 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masahiro Koyamauchi 2-2-2 Yoyogi, Shibuya-ku, Tokyo East Japan Railway Company (72) Inventor Nagato Ito 2-2-2 Yoyogi, Shibuya-ku, Tokyo No. 2 Inside Tohoku Japan Railway Company (72) Inventor Takeo Takeo 2-2-2 Yoyogi, Shibuya-ku, Tokyo Inside Tohoku Japan Railway Company (72) Inventor Hatsuo Sato 2 Yoyogi, Shibuya-ku, Tokyo (2-2) Inventor, Hiroto Kurahashi 3-11-8, Kanda Nishikicho, Chiyoda-ku, Tokyo Musashino Building Allen Co., Ltd. (72) Inventor, Fumio Yamamoto Koto-ku, Tokyo 4-12-12 Shinkiba Shinto Paint Co., Ltd. (72) Inventor Yoshitaka Murata 4-12-12 Shinkiba Koto-ku, Tokyo Shinto Paint Co., Ltd.
Claims (7)
充層の補修に用いられるスラブ式軌道の補修材料であっ
て、 ラジカル硬化性を有する合成樹脂を基材とし、これに高
分子弾性材の小片と無機骨材とを混合すると共に、前記
基材の硬化剤を添加してなることを特徴とする補修材
料。1. A repair material for a slab-type track used for repairing a filling layer between a track slab and a roadbed side structure, comprising a radical-curable synthetic resin as a base material, A repair material obtained by mixing a small piece of material with an inorganic aggregate and adding a curing agent for the base material.
ルアクリレートを主成分とすることを特徴とする請求項
1に記載の補修材料。2. The repair material according to claim 1, wherein the synthetic resin serving as the base material is mainly composed of polyester acrylate.
切断してなるゴムチップであることを特徴とする請求項
1若しくは請求項2に記載の補修材料。3. The repair material according to claim 1, wherein the small piece of the polymer elastic material is a rubber chip obtained by cutting an old tire.
とする請求項1乃至請求項3のいずれかに記載の補修材
料。4. The repair material according to claim 1, wherein the inorganic aggregate is silica sand.
のスラブ下部填充層の補修に使用するものであり、シリ
カパウダーを添加してなることを特徴とする請求項1乃
至請求項4のいずれかに記載の補修材料。5. The method according to claim 1, which is used for repairing a lower layer filling between the track slab and the roadbed concrete, wherein silica powder is added. Repair material as described.
充層を補修するスラブ式軌道の補修方法であって、 前記填充層の劣化部分を削り取った後、ラジカル硬化性
を有する合成樹脂を基材とし、これに高分子弾性材の小
片と無機骨材とを混合すると共に前記基材の硬化剤を添
加して得られた補修材料を充填することを特徴とする補
修方法。6. A slab-type track repairing method for repairing a filling layer between a track slab and a roadbed side structure, comprising: removing a deteriorated portion of the filling layer; A repair method characterized by comprising a base material, a small piece of a polymer elastic material and an inorganic aggregate, and a repair material obtained by adding a curing agent for the base material to the base material.
振動を加えながら充填することを特徴とする請求項6に
記載の補修方法。7. The repair method according to claim 6, wherein the repair material is filled while applying vibration to the material using a vibrator.
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JP06488498A JP3962150B2 (en) | 1998-03-16 | 1998-03-16 | Slab track repair material and repair method |
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---|---|---|---|
JP06488498A JP3962150B2 (en) | 1998-03-16 | 1998-03-16 | Slab track repair material and repair method |
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JPH11256504A true JPH11256504A (en) | 1999-09-21 |
JP3962150B2 JP3962150B2 (en) | 2007-08-22 |
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