Fiber Sheet Adhesion construction method［Outline］
In order to prevent projection by the corrosion and a fracture of PC steel materials In
PC bridge superstructure, it is a reinforcement construction method which uses
together the composite fiber sheet of an aramid and nylon with a band steel plate or(length and width aramid sheet), and sticks it on a horizontal beam end and afloor-slab upper surface part with adhesives.
［The background of development］
PC steel stick projected by the corrosion fracture of PC bridge top Takumi's horizontal
bundle steel materials, or perpendicular bundle steel materials, and the accident whichlacks the concrete of a fixing part with the energy occurred in recent years. The fiber
sheet adhesion construction method was developed in order to prevent theseaccidents.
［Feature］① By using together the aramid nylon fiber sheet and band steel plate of hightoughness, absorb the projection energy of PC steel stick and prevent the piece
exfoliation of concrete with the prevention from a projection.
② Even when projection of PC steel stick arises, Should be able to check the changing
situation of concrete for appearance with viewing or an infrared irradiation
machine.
③ Since work only pastes up a fiber sheet and a hoop iron board by resin, it is easy toconstruct.
④ It can construct only manually and does not need a heavy industrial machine.
⑤ Since it is a sheet type, It can respond to the complicated shape of a structure
flexibly, and can perform processing and cutting easily on the spot.
⑥ Since

It is lightweight,

there is no weight burdentosuperstructure

andsubstructure.
［Application］
PC bridge superstructure which used PC steel stick for the steel materials forhorizontal bundles （Horizontal beam end）
PC bridge superstructure which used PC steel stick for the steel materials for
perpendicular bundles （Floor-slab upper surface part）

Coating material
Aramid nylon f iber sheet

HK-top E primer
HK-top putty
HK-top M150B

Aramid nylon f iber sheet
Length and widthBand steel plate
PC steel bar

horizontal beam ends

※PC steel bar

Floor-slab upper surface part

Please note handling enough about all documents concerning the fiber sheetadhesion construction method so that information on the character of the industrial
method should not leak.

［Construction procedure］
The construction procedure of the fiber sheet adhesion construction method forhorizontal beam ends is shown. The construction procedure for floor-slab uppersurface parts is also almost the same.
Foundations scraping

Investigation work of PC
steel stick bar

Check a steel stick position by viewing and RC radar.

Sectional restoration
work

Band steel plate and fiber
sheet distribution drawing

Setting band steel plate

According to the plate hole of a hoop iron board, It carry out a drill holewith an electric drill.
Primer: HK-E1200
Band-steel-plate adhe sion m aterial: HK-EPA
Attach a band steel plate to a predetermined position, driving in ananchor .
Primer: HK-E1200

Fiber sheet mountingwork

Level-difference correction material: HK -EPA
Impregnant resin material: HK-E3200
Fiber sheet: Aramid nylon sheet

Edge seal work

End seal m aterial: HK-EPA

The base coating for primer: HK-t op E primer
Edge seal work

The second coating: HK -top putty
The final coating: HK-top M150B

Setting band steel plate for finish（horizontal beam end）F iber sheet mounting work
（horizontal beam end）

F iber sheet mounting work
（floor-slab upper surface part）【Reference】
Inc. HORK Osaka head office9-55, Kikugaoka-cho, Hirakata-shi, Osaka 573-0091, Japan
Phone：81-72-861-5555 Fax：81-72-861-5522
E-mail： osaka@hork.co.jp
Tokyo branch
Mitsubishi Electric Setagaya building 1F, 3-10-3, Ikejiri, Setagaya-ku, Tokyo 154-0001, Japan
Phone：81-3-5433-0550 Fax：81-3-5433-0551
E-mail： tokyo@hor k.co.jp