It comes ahead of the start of a three day test event - doubling as the Ibero-American Championships - which is due to begin tomorrow.

The venue, also known as the Estádio Olímpico João Havelange, is set to host the "blue riband" event of the Games, with blue being the operative word considering the colour of the track.

This could be a good omen for athletics' biggest star Usain Bolt as he chases an unprecedented "triple triple" of 100, 200 and 4x100 metres relay victories, as he set the current 100 and 200m world records on a blue track at the 2009 World Championships in Berlin.

It will provide a "dramatic backdrop to the athletics events of the Rio 2016 Olympic and Paralympic Games", a statement claimed.

It was given a seal of approval by a delegation including Paes, Rio 2016 President Carlos Nuzman and executive sports director Agberto Guimarães.

"Athletics forms the foundations of the Olympic movement," said Guimarães, a three-time Olympic middle distance runner.

"Anyone who comes to the Olympic Stadium for the test event will get a good idea of how the athletics events will look during Rio 2016."

The new synthetic track has been designed and installed by Italian company Mondo with Rio's "hot and humid conditions" in mind. 

This includes the use of nano-technology to make molecular modifications to the formula of the track. 

Its completion comes as a boost to organisers as they continue to battle a myriad of concerns - with the velodrome now the only venue with significant outstanding construction work.

A total of 60,000 seats will be available during the Games following the installation of temporary seating at both ends, behind where the goals are positioned when the stadium is in football mode as home of leading club Botafogo.

Other parts of the venue have also been renovated; the elevators and bathrooms have been modernised and new electricity, sound and lighting systems have been installed.

Before the Games, a giant electronic screen will be mounted.

Measuring 30m x 9m, it will use LEDs to display results and replay key moments for the crowd.

A total of 3,500 free tickets will be distributed for the test event, which will assess organisers' ability to manage large crowds safely and efficiently while at the same time running a major sporting event.

A test event for Paralympic athletics will then be held at the Olympic Stadium next week from May 18 to 21.

The Olympic Stadium will also host eight women's and men's football matches in the group stages of the Rio 2016 tournaments.