The Santo Antônio Dam is a hydroelectric dam built on the Madeira River in the state of Rondônia, Brazil. It is powered by 50 turbines, with a total capacity of 3,580 MW.

For this major dam project, Dextra supplied its Rolltec rebar coupler solution to contractors Odebrecht & Andrade Gutierrez.

Rolltec is the most popular rebar splicing solution in Brazil, providing a competitive alternative to lap splices. The rebar preparation is supported by a unique, lightweight machine operated by a single worker. The Rolltec machine is relatively easy to transport and convenient to install, even in remote locations such as dam construction sites.

At the Santo Antônio Dam, rebar couplers were used to reconnect bent rebar. To achieve this, a straight bar is first threaded (A/B/C thread length) and then bent according to project requirements.

If needed, a coupler can be temporarily set up on the rebar to protect the thread.

For more technical information about coupler applications on bent bars, please contact us.