OVM External Prestressing Systems

OVM External Prestressing Systems

• Conform to the following international recommendations and Chinese national standards:

fib33 Durability of Post-tensioning Tendons

ASTRA 12 010

EAD 160004-0310 Post-tensioning Kits for Prestressing of Structures

fib75 Polymer-Duct Systems for Internal Boned Post-tensiong

PTI M50.3-19 Specification for Multistrand and Grouted Post-tensioning

FDOT 2022 Florida Department of Transportation FDOT Standard Specifications for Road and Bridge Construction

• Durable, with excellent anti-corrosive and anti-gatigue properties. The damping device can be equipped to reduce the tendon vibration.
• Easy to inspect and maintain, and is replaceable.
• The individual strand deviator can reduce the stress concentration at deviating area

Basic Components of OVM External Prestressing Systems

The basic components of external prestressing system include:

• External cables, ducts and grouting materials
• Anchorage system
• Deviating device
• Anti-corrosion system
• Damping device