JP3598256B2 - Sticking type concrete piece fall prevention sheet - Google Patents
Sticking type concrete piece fall prevention sheet Download PDFInfo
- Publication number
- JP3598256B2 JP3598256B2 JP2000081980A JP2000081980A JP3598256B2 JP 3598256 B2 JP3598256 B2 JP 3598256B2 JP 2000081980 A JP2000081980 A JP 2000081980A JP 2000081980 A JP2000081980 A JP 2000081980A JP 3598256 B2 JP3598256 B2 JP 3598256B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- fall prevention
- translucent
- concrete piece
- prevention sheet
- 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
- 230000002265 prevention Effects 0.000 title claims 2
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- 239000011152 fibreglass Substances 0.000 claims 1
- 239000003365 glass fiber Substances 0.000 description 11
- 239000004745 nonwoven fabric Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 229920001567 vinyl ester resin Polymers 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 235000005811 Viola adunca Nutrition 0.000 description 2
- 240000009038 Viola odorata Species 0.000 description 2
- 235000013487 Viola odorata Nutrition 0.000 description 2
- 235000002254 Viola papilionacea Nutrition 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Images
Landscapes
- Lining And Supports For Tunnels (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Nonwoven Fabrics (AREA)
Description
【０００１】
【発明の属する技術分野】
この発明は、トンネル、道路橋等のコンクリート構造物のコールドジョイント部や僅かなクラック発生部などのように、コンクリート片の突発的な落下が生じる可能性のある部分に張付けて、コンクリート片の突発的な落下による事故を未然に防止するための補助的なシートに関するものである。
【０００２】
【従来の技術】
この種のシートとしては、熱硬化性や紫外線硬化性の樹脂を付着（含浸、塗布、コーティングを含む）したガラス繊維強化布等からなる不透明なシートが知られている。
【０００３】
しかしこの公知のシートは、樹脂の硬化に時間がかかるため、張付け作業の能率が低いとともに、張付け状態においては、不透明な点から、張付け部が隠された状態になるため、コンクリート片の落下に繋がるクラックなどの発生の有無やその進行の状況を直接目で確認できず、従って点検精度を高めるために長時間を必要とするという不都合がある。
【０００４】
【発明が解決しようとする課題】
この発明は、上記のような不都合に鑑み、張付け作業の能率が高いとともに、張付け部の状況を直接目目視可能で、高い精度の点検を短時間で行うことができるシートを提供することを課題としている。
【０００５】
この発明に係るシートは、半透明の不織布、半透明のガラス繊維マット及びネットを積層するとともに透明又は半透明の可視光線硬化性樹脂を付着した半透明性（半透明型）のシートからなる。
【０００６】
不織布、ガラス繊維マット及びネットの積層は、一般には、強度のバランス上から、ネットを中央に配置し、その上下に順次ガラス繊維マットと不織布を積層する５層構造や、このような５層構造の上下にさらにガラス繊維マットを積層する７層構造などの形態にすることができる。
【０００７】
不織布、ガラス繊維マットとしては、周知の半透明のものを用いることができる一方、ネットとしては、強度の点から、ワイヤラスのような一般網や溶接網（ワイヤメッシュ）などの金網が好適であるものの、プラスチック等のその他の材料からなる網も用いることができる。なお網目の大きさは、シートの半透明性を損なわない大きさであればよく、例えば方形の場合には一辺が２〜１０ｃｍなどの慣用的な大きさを用いることができる。
【０００８】
また可視光線硬化性樹脂としては、一般には、可視光重合開始剤を含む透明な又は半透明のビニルエステル樹脂、例えば青紫色の光線（３８０〜４８０ｎｍ）による硬化性を有するビニルエステル樹脂が好適である。
【０００９】
この発明のシートのコンクリート構造物に対する張付けは、別体の可視光源（蛍光灯などの可視光線照射灯）とシート押圧ローラとの組合せのほか、可視光源に対向させてシート押圧用の可視光線透過性エア膨張体を配置した可視光源、シート押圧体一体型のエア式張付け装置などを用いて行うことができる。
【００１０】
【発明の実施の形態】
図１は、この発明に係るシートの一実施形態を略示したもので、金網製のネット１３の上下に半透明のガラス繊維マット１２を積層し、さらにその上下に半透明の不織布１１を積層し、この５層の積層状態で全体に透明な可視光線硬化性樹脂（図示せず）を含浸して形成した構造からなる。
【００１１】
このシートは、可視光線不透過性のアルミホイール製等の包装袋に密封し、張付け作業時に開封して使用する。
【００１２】
【実施例】
東洋紡績製の幅０．５ｍ、厚さ０．１４ｍｍの半透明の不織布（商品名エクーレ）と、日東紡績製の幅０．５ｍ、厚さが０．８ｍｍの半透明のガラス繊維マット（商品名チョップドストランドマット）及び理研電線製の幅０．５ｍで、網目が５ｃｍ×５ｃｍのステンレス鋼線（直径０．２ｍｍ）からなる溶接網を、前二者は各二つのロール、後者は一つのロールのそれぞれから繰出して、溶接網の上下にガラス繊維マットと不織布を積層した状態で、昭和高分子製の透明な青紫色光線硬化性のビニルエステル樹脂（商品名リポキシ）液中を通過させることにより、該樹脂を含浸したシートを形成し、このシートを順次１ｍの定尺長さに切断することによって、図１に対応した幅が０．５ｍ、厚さが約２ｍｍで，長さが１ｍの半透明性のシートを多数枚作製し、それぞれをアルミホイール製の包装袋で密封包装した。
【００１３】
これらの各シートを可視光源が蛍光灯で、かつエア膨張体が半袋状の弾性シートからなる可視光源、シート押圧体一体型のエア式張付け装置を用いて、コンクリート構造物のコールドジョイント部に押圧しながら可視光線を照射したところ、シートは約２０〜２５分の樹脂の硬化で緊密に張付けることができた（張付けたシートの周縁部は、予めシートの周縁対応部に設けたアンカーボルト穴に対するアンカーボルトの装着を介して固定した）。
【００１４】
またシートを張付けたコンクリート構造物のコールドジョイント部の状態は、シートを通して目で明確に確認することができた。
【００１５】
この発明のシートは、このほか、種々の形態で実施することができるもので、図示や上述した形態に限定されるものではない。
【００１６】
【発明の効果】
この発明のシートによれば、可視光線により短時間で硬化可能な可視光線硬化性樹脂を付着するので、張付け作業を高能率で行うことができるとともに、半透明性であるため、張付けたコールドジョイント部などの状況を直接目で確認することができ、従って精度の高い点検を短時間で行うことができるという実用上有用な効果が奏される。
【００１７】
さらにこのシートは、ガラス繊維マットとともにネットを積層しているため、従来のシートよりも強度が格段に高く、より長期にわたってコンクリート片の落下防止作用を奏する。
【図面の簡単な説明】
【図１】この発明に係るシートの一実施形態の略示的な拡大部分断面図である。
【符号の説明】
１１ 不織布
１２ ガラス繊維マット
１３ ネット[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method of attaching a concrete piece to a suddenly falling portion, such as a cold joint portion or a slight crack occurrence portion of a concrete structure such as a tunnel or a road bridge. The present invention relates to an auxiliary seat for preventing an accident due to a temporary drop.
[0002]
[Prior art]
As this type of sheet, an opaque sheet made of glass fiber reinforced cloth or the like to which a thermosetting or ultraviolet curable resin is attached (including impregnation, application, and coating) is known.
[0003]
However, this known sheet takes a long time to cure the resin, so that the efficiency of the sticking operation is low. The occurrence of connected cracks or the like and the progress of the cracks cannot be directly checked with the naked eye, so that there is a disadvantage that a long time is required to increase the inspection accuracy.
[0004]
[Problems to be solved by the invention]
The present invention has been made in consideration of the above-described inconveniences, and has an object to provide a sheet that has a high efficiency of a sticking operation, can directly visually check a state of a sticking portion, and can perform a highly accurate inspection in a short time. And
[0005]
Sheet according to the present invention, it consists of a sheet of translucent nonwoven, translucent glass fiber mats and translucency adhering a transparent or translucent in the visible light curable resin with laminated net (transflective).
[0006]
The lamination of the nonwoven fabric, the glass fiber mat and the net generally has a five-layer structure in which the net is disposed at the center and the glass fiber mat and the nonwoven fabric are sequentially laminated on the upper and lower sides in order to balance the strength. And a seven-layer structure in which glass fiber mats are further laminated above and below.
[0007]
Nonwoven, a glass fiber mat, while it is possible to use a well-known semi-transparent, as the net, in terms of strength, wire mesh are suitable, such as general network or welding network (wire mesh), such as wire lath However, nets made of other materials such as plastics can also be used. Note the size of the mesh may be any size that does not impair the translucency of the sheet, for example, one side in the case of the square is can be used conventional size, such as 2 to 10 cm.
[0008]
As the visible light curable resin, generally, a transparent or translucent vinyl ester resin containing a visible light polymerization initiator, for example, a vinyl ester resin having curability by a blue-violet light (380 to 480 nm) is preferable. is there.
[0009]
The sheet of the present invention can be attached to a concrete structure by a combination of a separate visible light source (a visible light irradiating lamp such as a fluorescent lamp) and a sheet pressing roller. This can be performed using a visible light source provided with a porous air inflatable body, an air-type sticking device integrated with a sheet pressing body, or the like.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 schematically shows an embodiment of a sheet according to the present invention, in which a translucent glass fiber mat 12 is laminated above and below a
[0011]
This sheet is sealed in a packaging bag made of an aluminum wheel or the like that is opaque to visible light, and is opened and used at the time of attaching work.
[0012]
【Example】
A translucent non-woven fabric (trade name Ecule) manufactured by Toyobo and having a width of 0.5 m and a thickness of 0.14 mm, and a translucent glass fiber mat having a width of 0.5 m and a thickness of 0.8 mm manufactured by Nitto Boseki ( Welding mesh consisting of stainless steel wire (diameter 0.2 mm) with a width of 0.5 m and a mesh of 5 cm x 5 cm made by Riken Electric Wire (trade name: chopped strand mat), two rolls each for the former and two for the latter Unreeled from each roll and passed through a transparent blue-violet light-curable vinyl ester resin (trade name: lipoxy) made by Showa Polymer with the glass fiber mat and non-woven fabric laminated above and below the welding net. By forming a sheet impregnated with the resin , the sheet is sequentially cut into a fixed length of 1 m , and the width corresponding to FIG. 1 is 0.5 m , the thickness is about 2 mm, and the length is about 2 mm. translucency of the Sea of Saga 1m A number of sheets were prepared, and each was hermetically sealed in an aluminum wheel packaging bag.
[0013]
Using a visible light source whose fluorescent light source is a fluorescent light source and an air inflatable body made of a semi-bag-shaped elastic sheet, and a sheet pressing body integrated type air-sealing device, these sheets are attached to the cold joint of the concrete structure. When the sheet was irradiated with visible light while being pressed, the sheet could be tightly adhered by curing the resin for about 20 to 25 minutes (the peripheral part of the adhered sheet was an anchor bolt previously provided at the peripheral part corresponding to the sheet). Fixed through the mounting of anchor bolts into the holes).
[0014]
Further, the state of the cold joint of the concrete structure to which the sheet was attached could be clearly confirmed through the sheet.
[0015]
The sheet of the present invention can be embodied in various forms, and is not limited to the figures and the above-described forms.
[0016]
【The invention's effect】
According to the sheet of the present invention, the visible light curable resin that can be cured in a short time by visible light is attached, so that the attaching work can be performed with high efficiency, and since it is translucent, the cold joint that is attached is used. It is possible to directly check the status of the parts and the like with the naked eye, so that a highly useful inspection can be performed in a short time, which is a practically useful effect.
[0017]
Further, since this sheet is laminated with a net together with a glass fiber mat , the strength is remarkably higher than that of a conventional sheet, and the sheet has an effect of preventing concrete pieces from falling for a longer period of time.
[Brief description of the drawings]
FIG. 1 is a schematic enlarged partial sectional view of an embodiment of a seat according to the present invention.
[Explanation of symbols]
11 Nonwoven fabric 12
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000081980A JP3598256B2 (en) | 2000-03-23 | 2000-03-23 | Sticking type concrete piece fall prevention sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000081980A JP3598256B2 (en) | 2000-03-23 | 2000-03-23 | Sticking type concrete piece fall prevention sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001271596A JP2001271596A (en) | 2001-10-05 |
| JP3598256B2 true JP3598256B2 (en) | 2004-12-08 |
Family
ID=18598836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000081980A Expired - Lifetime JP3598256B2 (en) | 2000-03-23 | 2000-03-23 | Sticking type concrete piece fall prevention sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3598256B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3903307B2 (en) * | 2002-03-19 | 2007-04-11 | 清水建設株式会社 | Concrete peeling prevention sheet and its application method |
-
2000
- 2000-03-23 JP JP2000081980A patent/JP3598256B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001271596A (en) | 2001-10-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0748279B1 (en) | Reinforcement panel having a cellulose surface material adhered thereto, a method for reinforcing a wood structure and the resulting reinforced structure | |
| ATE361832T1 (en) | MEMBRANE AND METHOD FOR PRODUCING THE SAME | |
| CA2702327A1 (en) | Armor panel system | |
| JP2005506217A5 (en) | ||
| JP3598256B2 (en) | Sticking type concrete piece fall prevention sheet | |
| GB1600867A (en) | Safety glass | |
| JPH09503037A (en) | Road signs and support sheets | |
| JP5265268B2 (en) | Steel structure reinforcement structure and steel structure reinforcement method | |
| US20020071932A1 (en) | Carbon fiber reinforcement material | |
| CA2473350A1 (en) | Lightweight structure especially for an aircraft and method for making such a structure | |
| JP3776384B2 (en) | Repair and reinforcement methods for concrete structures | |
| US9884438B2 (en) | Impact resistant door facing, method of forming impact resistant door facing, and door formed therewith | |
| KR102096360B1 (en) | Asphalt Pavement Reinforcement and Method for Fabricating the same | |
| JP2003269091A (en) | Concrete exfoliation prevention sheet and method for attaching the same | |
| JPH10306596A (en) | Repair and reinforcement methods for existing concrete structures | |
| JPH09296615A (en) | Repair and reinforcement methods for structures | |
| JP4429494B2 (en) | Lining sheet for repairing concrete structures | |
| JP5042457B2 (en) | Cement-based structure reinforcing multilayer sheet and method for reinforcing cement-based structure using the sheet | |
| JP2004211290A (en) | Structural reinforcement method by continuous tension bonding of continuous reinforcing fiber sheet | |
| JP2004143847A (en) | Repair and reinforcement method for long wooden members | |
| CN2606147Y (en) | Prefabricated exterior wall construction | |
| JP2019206896A5 (en) | ||
| JP3608826B2 (en) | Strut by elastic support and manufacturing method thereof | |
| JP3844847B2 (en) | Release sheet | |
| JP2010090543A (en) | Nonwoven fabric sheet for preventing exfoliation of concrete |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20040607 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040611 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040809 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20040902 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20040913 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 Ref document number: 3598256 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080917 Year of fee payment: 4 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090917 Year of fee payment: 5 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100917 Year of fee payment: 6 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110917 Year of fee payment: 7 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110917 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120917 Year of fee payment: 8 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120917 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130917 Year of fee payment: 9 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |