JP2019218859A - Exfoliation countermeasure construction method of mortar or concrete surface by resin spray - Google Patents
Exfoliation countermeasure construction method of mortar or concrete surface by resin spray Download PDFInfo
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- JP2019218859A JP2019218859A JP2019184219A JP2019184219A JP2019218859A JP 2019218859 A JP2019218859 A JP 2019218859A JP 2019184219 A JP2019184219 A JP 2019184219A JP 2019184219 A JP2019184219 A JP 2019184219A JP 2019218859 A JP2019218859 A JP 2019218859A
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- polyurea resin
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- 229920005989 resin Polymers 0.000 title claims abstract description 60
- 239000011347 resin Substances 0.000 title claims abstract description 60
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 36
- 238000010276 construction Methods 0.000 title claims abstract 4
- 239000007921 spray Substances 0.000 title abstract description 4
- 238000004299 exfoliation Methods 0.000 title abstract 5
- 229920002396 Polyurea Polymers 0.000 claims abstract description 45
- 241000283070 Equus zebra Species 0.000 claims abstract description 9
- 238000005507 spraying Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 14
- 230000002787 reinforcement Effects 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 230000005856 abnormality Effects 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000012795 verification Methods 0.000 abstract 1
- 238000004901 spalling Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 239000002987 primer (paints) Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000009751 slip forming Methods 0.000 description 2
- 241000283086 Equidae Species 0.000 description 1
- 206010048744 Fear of falling Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
本発明は、剥落が懸念されるトンネル覆工をはじめ、橋脚、橋桁等にも適用できるモルタル又はコンクリート面の剥落対策工法に関するものである。 The present invention relates to a method for preventing mortar or concrete from peeling, which can be applied to a bridge pier, a bridge girder, and the like, in addition to a tunnel lining where peeling is a concern.
従来、ひび割れ等の変状があるコンクリート製トンネル覆工に対して、繊維シート等を貼り付け、覆工コンクリートの補強および剥落対策を図る技術は既に開発されている（下記特許文献１参照）。 2. Description of the Related Art Conventionally, a technique for attaching a fiber sheet or the like to a concrete tunnel lining having a deformity such as cracks to reinforce the lining concrete and to prevent the lining concrete from falling has been developed (see Patent Document 1 below).
また、コンクリート構造物であるトンネル全面にプライマー塗装後ポリウレア樹脂を吹き付けて塗膜を形成させることは知られている（下記特許文献２参照）。 It is also known that a polyurea resin is sprayed onto the entire surface of a tunnel as a concrete structure after primer coating to form a coating film (see Patent Document 2 below).
しかしながら、従来のトンネル覆工の剥落対策工法では、繊維を織り込んだシート等をトンネル内面に、一定の面積で貼り付け、コンクリートの剥落塊を全体的に覆うことにより効果を得ていた。この剥落対策工法では、貼付けたシートが経年劣化により剥がれて落下したり、垂れ下がって架線に接触する恐れがある。アンカーで端部を固定した場合でも、アンカーの緩みによりアンカー自体が落下する恐れがあり、アンカーのメンテナンスに多大な労力が必要である。 However, in the conventional method for preventing the falling off of the tunnel lining, an effect is obtained by attaching a sheet or the like in which fibers are woven to the inner surface of the tunnel with a fixed area to entirely cover the flakes of concrete. In this method for preventing peeling, there is a risk that the affixed sheet may peel off due to aging and fall, or may hang down and come into contact with the overhead wire. Even when the end is fixed by the anchor, the anchor itself may fall due to the loosening of the anchor, and maintenance of the anchor requires a great deal of labor.
また、一般的な剥落対策工法では、覆工内面の変状範囲全面をシートで覆ってしまうため、対策後のコンクリート覆工の変状点検、変状進展の確認は不可能である。 In addition, in a general method for preventing spalling, the entire area of the deformed area on the inner surface of the lining is covered with a sheet, so that it is impossible to check the deformation of the concrete lining after the countermeasure and confirm the progress of the deformation.
また、ひび割れを覆ってしまうので、ひび割れ部から流れ出る漏水が剥落対策工法によってせき止められ、剥落対策工法やトンネル覆工全体に水圧が作用してしまう恐れがある。さらに、繊維シート等により過剰に引張補強を行った場合には、せん断破壊先行型の破壊モードとなってしまう。せん断破壊は、曲げ破壊と比べ、脆性的であるため、せん断破壊先行となることは望ましくない。なお、高強度、高剛性の薄い材料で内面だけに曲げ補強をしても、耐荷性能はあまり改善しないことも実験で確認されており、剥落対策工法は必ずしも高強度、高剛性の材料を使うべきであるとは言えない。 In addition, since the cracks are covered, water leaking from the cracks is blocked by the peeling prevention method, and there is a possibility that water pressure acts on the peeling prevention method and the entire tunnel lining. Furthermore, when the fiber sheet or the like excessively reinforces the tensile strength, the fracture mode is of a shear failure precedence type. Since shear fracture is more brittle than bending fracture, it is not desirable to precede shear fracture. Experiments have shown that even if the inner surface is bent and reinforced only with a high-strength, high-rigidity thin material, the load-carrying performance is not significantly improved, and the spalling prevention method always uses a high-strength, high-rigidity material. I can't say it should.
従来公知のポリウレア樹脂の塗膜をトンネル全面に形成させた場合、塗膜が垂れ下がったときには、架線に接触したりする不都合が生じる恐れがあった。 When a conventionally known coating film of a polyurea resin is formed on the entire surface of a tunnel, there is a possibility that when the coating film hangs down, it may be inconvenient to come into contact with an overhead wire.
本発明は、上記状況に鑑みて、剥落対策工の落下や垂れ下がりの心配がなく、剥落対策後のモルタル又はコンクリート面の変状点検、変状進展の確認が容易であり、しかも、剥落対策工の背面に滞水しない、樹脂吹付けによるモルタル又はコンクリート面の剥落対策工法を提供することを目的とする。 The present invention has been made in view of the above circumstances, and there is no fear of falling or sagging of the spalling countermeasure, and it is easy to check the deformation of the mortar or concrete surface after the spalling countermeasure and check the progress of the deformation. It is an object of the present invention to provide a method for preventing mortar or concrete from peeling off by spraying a resin so that water does not accumulate on the back surface of the mortar.
本発明は、上記目的を達成するために、
〔１〕樹脂吹付けによるモルタル又はコンクリート面の剥落対策工法であって、モルタル又はコンクリート面にプライマーを塗布し、ゼブラ配置でポリウレア樹脂を吹付け、前記ゼブラ配置は、ポリウレア樹脂の塗膜が、上下方向にのみ連続して形成された所定の間隔をおいて設けられている配置であることを特徴とする。
The present invention, in order to achieve the above object,
[1] A method for preventing mortar or concrete from peeling off by spraying a resin, in which a primer is applied to the mortar or concrete surface, and a polyurea resin is sprayed in a zebra arrangement. The arrangement is characterized in that the arrangement is provided at predetermined intervals continuously formed only in the vertical direction.
〔２〕上記〔１〕記載の樹脂吹付けによるモルタル又はコンクリート面の剥落対策工法において、前記モルタル又はコンクリート面はトンネル覆工内面であることを特徴とする。 [2] The method for preventing mortar or concrete from peeling off by spraying resin as described in [1] above, wherein the mortar or concrete surface is an inner surface of a tunnel lining.
本発明によれば、次のような効果を奏することができる。
（１）吹付けにより大面積のモルタル又はコンクリート面に容易にかつ素早く千鳥配置またはゼブラ配置のポリウレア樹脂の補強パターンを形成することができる。
（２）ポリウレア樹脂は素材自体が軽いため、１枚当たりの吹付け面積を適切に設定することで、落下による列車への影響をなくすことができる。
（３）千鳥配置として、最大長さを短くした場合、垂れ下がり架線へ接触する心配がない。
（４）経年劣化による剥がれの心配が不要なため、アンカーを必要とせず、メンテナンスコストの低い剥落対策工を提供することができる。
（５）補強後のモルタル又はコンクリート面のひび割れ等の変状や変形の進展を目視にて確認できるため、点検性能に優れ、補強背面に滞水しないことが大きな利点となる。
（６）本発明では、劣化により一部のポリウレアが剥がれてきても、その補修を容易に行うことができる。
According to the present invention, the following effects can be obtained.
(1) A reinforcing pattern of a polyurea resin in a staggered arrangement or a zebra arrangement can be easily and quickly formed on a large-area mortar or concrete surface by spraying.
(2) Since the polyurea resin itself is light in weight, it is possible to eliminate the effect on the train from falling by appropriately setting the spraying area per sheet.
(3) When the maximum length is shortened in the staggered arrangement, there is no fear of contact with the hanging overhead line.
(4) Since there is no need to worry about peeling due to aging, there is no need for an anchor, and it is possible to provide a peeling countermeasure with low maintenance cost.
(5) Since deformation and deformation such as cracks on the mortar or concrete surface after reinforcement can be visually confirmed, it is a great advantage that inspection performance is excellent and that water does not accumulate on the back surface of the reinforcement.
(6) In the present invention, even if some polyurea comes off due to deterioration, it can be easily repaired.
本発明の樹脂吹付けによるモルタル又はコンクリート面の剥落対策工法は、モルタル又はコンクリート面にプライマーを塗布し、千鳥配置又はゼブラ配置でポリウレア樹脂を吹付ける。 In the method of the present invention for preventing mortar or concrete from peeling off by spraying a resin, a primer is applied to the mortar or concrete surface, and a polyurea resin is sprayed in a staggered or zebra arrangement.
本発明において、千鳥配置とはポリウレア樹脂の塗膜が、横方向（水平方向）及び上下方向（鉛直方向）に所定の間隔において設けられており、この間隔は連続しており、相互に連結して網目状を構成しているが、ポリウレア樹脂の塗膜が形成する島の下端は、水平方向に隣り合う塗膜の島の下端とは上下方向の高さは同じではない配置状態をいう。したがって、千鳥配置では、ポリウレア樹脂の塗膜が形成する連続した間隔は、水平方向に一直線となることはない。ポリウレア樹脂の塗膜が形成する島の形状は、通常は四角形であるが、凸状曲線及び／又は凹状曲線で形成されるような不定形であってもよく、また円形もしくは楕円形のような形状をしていてもよい。島状態の好ましい形状は四角形である。 In the present invention, the staggered arrangement means that the coating film of the polyurea resin is provided at predetermined intervals in the horizontal direction (horizontal direction) and the vertical direction (vertical direction), and this interval is continuous and interconnected. However, the lower end of the island formed by the coating film of the polyurea resin is not arranged at the same height in the vertical direction as the lower end of the island of the coating film adjacent horizontally. Therefore, in the staggered arrangement, the continuous intervals between the coating films of the polyurea resin do not form a straight line in the horizontal direction. The shape of the island formed by the coating film of the polyurea resin is usually a square, but may be an irregular shape such as a convex curve and / or a concave curve, or may be a circle or an ellipse. It may have a shape. The preferred shape of the island state is a square.
また、本発明のゼブラ配置とは、上記ポリウレア樹脂の塗膜の間隔が一方向（図４の場合は上下方向）にのみ連続して形成されている状態をいう。この場合同間隔はポリウレア樹脂の塗膜との関係においては網目状を構成してはいない。いずれにしても、本発明ではポリウレア樹脂の塗膜は、連続した所定の間隔をおいて設けられていることが特徴である。 Further, the zebra arrangement of the present invention refers to a state in which the intervals between the coating films of the polyurea resin are continuously formed only in one direction (the vertical direction in FIG. 4). In this case, the same interval does not form a network in relation to the coating film of the polyurea resin. In any case, the present invention is characterized in that the coating film of the polyurea resin is provided at continuous predetermined intervals.
以下、本発明の実施の形態について詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail.
図１は本発明の実施例を示す樹脂吹付けによるモルタル又はコンクリート面の剥落対策工法の模式図である。 FIG. 1 is a schematic view showing a method for preventing mortar or concrete from peeling off by spraying a resin according to an embodiment of the present invention.
この図において、１はトンネル、２はトンネル覆工、３はモルタル又はコンクリート面、４はひび割れ、５は吹付けられた千鳥配置のポリウレア樹脂である。例えば、トンネル覆工の場合、土圧によるひび割れは基本的にトンネル延長方向に水平に伸びるが、本発明では、ポリウレア樹脂を千鳥配置としていることで、必ずひび割れがポリウレア樹脂５を通ることとなる。覆工の剥落は、目地や潜在的なひび割れ、外力的なひび割れ等が閉合して発生することが一般的であるため、これらのひび割れが千鳥配置のポリウレア樹脂を全て避けることは考えにくく、十分な剥落対策効果を有している（後述するゼブラ配置も同様である）。 In this figure, 1 is a tunnel, 2 is a tunnel lining, 3 is a mortar or concrete surface, 4 is a crack, and 5 is a sprayed staggered polyurea resin. For example, in the case of tunnel lining, cracks due to earth pressure basically extend horizontally in the tunnel extension direction. However, in the present invention, since the polyurea resin is arranged in a staggered manner, the crack always passes through the polyurea resin 5. . Since the peeling of the lining is generally caused by the closure of joints, potential cracks, external cracks, etc., it is difficult to imagine that these cracks avoid all of the polyurea resin in a staggered arrangement. It has an effect of preventing spalling (the same applies to the arrangement of zebras described later).
ポリウレア樹脂は剛性が小さく伸び性能が大きいため、標準設計厚さ (１．５ｍｍ) の吹付けを行った場合は過度の引張補強にはならず、大きな変形にも追随するため、変形を目視にて確認できる。 Since the polyurea resin has low rigidity and high elongation performance, spraying with the standard design thickness (1.5 mm) does not result in excessive tensile reinforcement and follows large deformations. Can be confirmed.
さらに、補強後のひび割れ等の変状の進展をポリウレア樹脂の離間において目視にて確認できるため点検性能に優れ、内面補強工の背面に滞水しないことが大きな利点と考えられる。 Further, since the progress of deformation such as cracks after reinforcement can be visually confirmed while the polyurea resin is separated, it is considered that a great advantage is that the inspection performance is excellent and that water does not accumulate on the back surface of the inner surface reinforcement.
図２は本発明の実施例を示す千鳥配置のポリウレア樹脂形成を示す図面代用写真、図３は本発明の実施例を示す千鳥配置のポリウレア樹脂形成後の図面代用写真である。 FIG. 2 is a photograph substituted for a drawing showing the formation of a polyurea resin in a staggered arrangement showing an embodiment of the present invention, and FIG. 3 is a photograph substituted for a drawing after the formation of a polyurea resin in a staggered arrangement showing an embodiment of the present invention.
図２において、１１はポリウレア樹脂の離間箇所形成のためのバッカー、１２はポリウレア樹脂の形成箇所である。 In FIG. 2, reference numeral 11 denotes a backer for forming a separated portion of the polyurea resin, and 12 denotes a portion where the polyurea resin is formed.
図３において、２１はトンネル覆工、２２は吹付けられた千鳥配置のポリウレア樹脂である。 In FIG. 3, reference numeral 21 denotes a tunnel lining, and 22 denotes a staggered polyurea resin sprayed.
欠損部（ポリウレア樹脂を吹付けない部分）には覆工と縁切りできるバッカー１１を設置してからポリウレア樹脂２２を吹付けることにより、容易に大面積のモルタル又はコンクリート面に対して素早く、図３のような千鳥の補強パターンを形成できる（後述するゼブラ配置も同様である）。なお、図示されてはいないが、ポリウレア樹脂の吹き付けの前に、モルタル又はコンクリート面にプライマーを塗布している。 By installing a backer 11 capable of lining and trimming the defective portion (portion where the polyurea resin is not sprayed) and then spraying the polyurea resin 22, it can be easily and quickly applied to a large-area mortar or concrete surface. Such a zigzag reinforcing pattern can be formed (the same applies to the zebra arrangement described later). Although not shown, a primer is applied to the mortar or concrete surface before spraying the polyurea resin.
ポリウレア樹脂の塗膜の間隔は、５ｍｍ〜１００ｍｍ程度であって、好ましくは１０ｍｍ〜５０ｍｍである。 The interval between the coating films of the polyurea resin is about 5 mm to 100 mm, and preferably 10 mm to 50 mm.
本発明では、千鳥配置の場合、ポリウレア樹脂１枚当たりのサイズは、幅が１００ｍｍ以下、好ましくは１００ｍｍ〜５０ｍｍ、長さが５００ｍｍ以下、好ましくは５００ｍｍ〜３００ｍｍ、厚さが１．５ｍｍ以下、好ましくは１．５ｍｍ〜１．３ｍｍであることが望ましい。即ち最大で幅１００ｍｍ×長さ５００ｍｍ×厚さ１．５ｍｍであることが望ましい。 In the present invention, in the case of the staggered arrangement, the size per polyurea resin is 100 mm or less in width, preferably 100 mm to 50 mm, and 500 mm or less in length, preferably 500 mm to 300 mm, and 1.5 mm or less in thickness. Is desirably 1.5 mm to 1.3 mm. That is, it is desirable that the maximum width is 100 mm × length 500 mm × thickness 1.5 mm.
また、ポリウレア樹脂の吹付量としては、１．５ｋｇ/ ｍ2 以下、好ましくは１．５〜１．３ｋｇ/ ｍ2 であることが望ましい。吹付量が１．５ｋｇ/ ｍ2 の場合、ポリウレア樹脂１枚当たりの重量は７５ｇとなるので、１枚当たりの重量は７５ｇ以下、好ましくは７５ｇ〜６５ｇ程度が好ましい。 As the spray amount of polyurea resin, 1.5 kg / m 2 or less, preferably a 1.5~1.3kg / m 2. When the spraying amount is 1.5 kg / m 2 , the weight per polyurea resin is 75 g, so the weight per polyurea resin is preferably 75 g or less, more preferably about 75 g to 65 g.
ポリウレア樹脂は素材自体が軽く、１枚あたりの吹付け面積を、例えば上記の値に適切に設定することにより、万が一落下しても列車に影響はない。さらに、千鳥配置として、最大長さを短くした場合には、垂れ下がり架線に接触することもない。経年劣化による剥がれの心配が不要なため、アンカーを必要とせずに、剥落対策工としてのメンテナンスコストが低くなるように構成することができる。 The material of the polyurea resin itself is light, and by appropriately setting the spraying area per sheet to, for example, the above value, even if it falls, the train will not be affected. Further, when the maximum length is shortened in a staggered arrangement, the staggered arrangement does not contact the hanging overhead line. Since there is no need to worry about peeling due to aging, an anchor is not required and the maintenance cost as a measure against peeling can be reduced.
図４は本発明の他の実施例を示す樹脂吹付けによるモルタル又はコンクリート面の剥落対策工法の模式図である。 FIG. 4 is a schematic view of a method of preventing mortar or concrete from peeling off by spraying a resin according to another embodiment of the present invention.
この図において、３１はトンネル、３２はトンネル覆工、３３はモルタル又はコンクリート面、３４はひび割れ、３５は吹付けられたゼブラ配置のポリウレア樹脂である。 In this figure, 31 is a tunnel, 32 is a tunnel lining, 33 is a mortar or concrete surface, 34 is a crack, and 35 is a sprayed zebra-arranged polyurea resin.
この実施例では千鳥配置に代えてゼブラ配置のポリウレア樹脂を配置する。 In this embodiment, a zebra-arranged polyurea resin is arranged in place of the staggered arrangement.
図１と同様に、トンネル延長方向に水平に伸びるひび割れが、必ずポリウレア樹脂を通ることとなり、十分な剥落対策効果を奏することができる。 As in FIG. 1, cracks extending horizontally in the tunnel extending direction always pass through the polyurea resin, and a sufficient effect of preventing spalling can be achieved.
上記実施例では、トンネル覆工を例とした実施例を示したが、本発明の樹脂吹付けによるモルタル又はコンクリート面の剥落対策工法は、橋脚、橋桁等、モルタル又はコンクリート面を有する他の構造物にも適用可能である。 In the above embodiment, an example in which a tunnel lining is taken as an example is shown. However, the method of the present invention for preventing mortar or concrete from peeling off by spraying with a resin may be applied to other structures having a mortar or concrete surface such as a pier or a bridge girder. Applicable to objects.
なお、本発明は上記実施例に限定されるものではなく、本発明の趣旨に基づき種々の変形が可能であり、これらを本発明の範囲から排除するものではない。 It should be noted that the present invention is not limited to the above embodiments, and various modifications are possible based on the gist of the present invention, and these are not excluded from the scope of the present invention.
本発明の樹脂吹付けによるモルタル又はコンクリート面の剥落対策工法は、アンカーを必要とせず、剥落対策後のモルタル又はコンクリート覆工の変状点検、変状進展の確認が容易であり、しかも、内面補強工の背面に滞水しない、樹脂吹付けによるモルタル又はコンクリート面の剥落対策工法として利用可能である。 The method for preventing mortar or concrete from spalling by spraying resin according to the present invention does not require an anchor, and it is easy to check the deformation of mortar or concrete lining after the countermeasure against spalling, and to check the progress of deformation, and furthermore, the inner surface. It can be used as a method to prevent mortar or concrete from coming off due to resin spraying, which does not accumulate on the back of the reinforcement.
１、３１ トンネル
２、２１、３２ トンネル覆工
３、３３ モルタル又はコンクリート面
４、３４ ひび割れ
５、２２ 千鳥配置のポリウレア樹脂
１１ バッカー
１２ ポリウレア樹脂の形成箇所
３５ ゼブラ配置のポリウレア樹脂
1, 31 Tunnel 2, 21, 32 Tunnel Lining 3, 33 Mortar or Concrete Surface 4, 34 Crack 5, 22, Staggered Polyurea Resin 11 Backer 12 Polyurea Resin Formed 35 Polyurea Resin in Zebra
Claims (2)
前記ゼブラ配置は、ポリウレア樹脂の塗膜が、上下方向にのみ連続して形成された所定の間隔をおいて設けられている配置であることを特徴とする樹脂吹付けによるモルタル又はコンクリート面の剥落対策工法。 Applying a primer to the mortar or concrete surface and spraying a polyurea resin in a zebra arrangement is a method of preventing mortar or concrete surface peeling by resin spraying,
The zebra arrangement is characterized in that the coating film of the polyurea resin is an arrangement in which the coating is provided at predetermined intervals formed continuously only in the vertical direction, and the mortar or concrete surface is peeled off by resin spraying. Countermeasure construction method.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004218352A (en) * | 2003-01-17 | 2004-08-05 | Kajima Corp | Repairing method for separation/falling place of concrete piece |
| JP2006274629A (en) * | 2005-03-29 | 2006-10-12 | Railway Technical Res Inst | Tunnel lining concrete inner surface reinforcing method and its structure |
| JP2012167512A (en) * | 2011-02-16 | 2012-09-06 | Toda Constr Co Ltd | Reinforcement material, reinforcement structure of construction, and reinforcement method of construction |
| US20130330467A1 (en) * | 2012-06-12 | 2013-12-12 | Abb Inc. | Method of applying a thin spray-on liner and robotic applicator therefor |
-
2019
- 2019-10-07 JP JP2019184219A patent/JP6853864B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004218352A (en) * | 2003-01-17 | 2004-08-05 | Kajima Corp | Repairing method for separation/falling place of concrete piece |
| JP2006274629A (en) * | 2005-03-29 | 2006-10-12 | Railway Technical Res Inst | Tunnel lining concrete inner surface reinforcing method and its structure |
| JP2012167512A (en) * | 2011-02-16 | 2012-09-06 | Toda Constr Co Ltd | Reinforcement material, reinforcement structure of construction, and reinforcement method of construction |
| US20130330467A1 (en) * | 2012-06-12 | 2013-12-12 | Abb Inc. | Method of applying a thin spray-on liner and robotic applicator therefor |
Non-Patent Citations (1)
| Title |
|---|
| 輿石正己: "構造物の機能保持技術（タフネスコート）によるトンネル覆工の剥落防止効果", 土木学会第70回年次学術講演会 講演概要集, JPN6019048409, 1 August 2015 (2015-08-01), pages 647 - 648, ISSN: 0004319075 * |
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