Your challenges
are our inspiration


Jul 2017 : Reinforcing highway girders with post tensioning bar systems

Post Tensioning Bar systems are highly customizable and versatile solutions allowing for multiple applications in bridge/viaduct construction.

Dextra has recently supplied customized PT bar systems for the reinforcement of precast girder segments used on the Bang Pa In – Saraburi – Nakhon Ratchasima highway in the North-East of Bangkok.

The Post Tensioning Bar Systems, made of hot rolled deformed high-tensile bars (FT bars) Ø36mm, allow for the vertical reinforcement of the precast segments, with up to 14 sets per girder element.

Each bar will be jacked and put under the required tension from the top of each element while on the ground. After that the girder is lifted and installed in its final position.

Permanent corrosion protection will be achieved by filling a galvanized duct around the bar with grout.

More about Fully Threaded Bar Systems

About Dextra

Operating since 1983, Dextra Group is a manufacturing, freight forwarding and trading company specialized in supplying the construction and industrial sectors. We have activities in more than 55 countries through our network of affliates and partners.

The world leading manufacturer of rebar mechanical splices, we also engineer and produce innovative architectural and geotechnical solutions in high performance steel and FRP composite materials.

Learn more

Vision & Mission

To be a global leader in engineering, manufacturing and delivery of high value added quality products and services for the construction industry.

Learn more

Managing Team

From day one, Dextra has self-managed its growth as a private equity Group, still fully owned by its founders and managers.

Learn more


Dextra Group has developed through a long history, during which it encouraged those with an entrepreneurial spirit and constantly strived towards innovation and growth, leading to diversification. Our three main activities are manufacturing, trading and project forwarding, all within the construction and industrial sectors.

Learn more

Working at Dextra

Dextra Group, funded in 1983, is a 900-people strong organization operating within the construction, building material, industrial & forwarding sectors.

With multiple teams on all continents collaborating on a daily basis, Dextra makes a point to build a strong inclusive multicultural work environment mixing people of various nationality and promoting gender equality in the workplace.

Learn more

Don't have an account yet? Register Now!

Sign in to your account