Features

Highways authorities around the world are testing every component of a pavement in a bid to improve durability. Kristina Smith looks at two very different examples, one from the UK and one from the US

The second ERF LAB event* in Brussels examined the ‘Impact of new mobility on road infrastructure and equipment’, writes Christophe Nicodème, director-general of the ERF

IRF Global Credential central to Senegal mission

This past month of July America and much of the world celebrated the 50th anniversary of man setting foot on the moon. There were speeches, replays of the Saturn V launch and lunar landing videos, interviews with astronauts, and much more as we relived the excitement, danger, and suspense of sending human beings 384,000km into space to land on an uninhabited moon and return. Most Americans over the age of five in 1969 can tell you where they were when the Eagle landed on July 20, 1969, and the world watch

Changsha, the capital of Hunan province, is capitalising on its well-established equipment and componentry manufacturing base as China’s global Belt and Road Initiative gathers momentum.

Cross-linking agents can vastly improve the stability and performance of polymer-modified bitumen (PMB), according to additive specialist Iterchimica. Modified bitumen can become unstable when it is stored inside a tank because the polymer rises to the top, meaning that the rheological behaviour of the bitumen varies through the tank. Cross-linking agents modify bitumen through a chemical action that stabilises the bitumen inside the tank to create a homogenous PMB and hence, a homogeneous asphalt concr

Asphalt plant producer Ciber discusses asphalt mix properties The basic quality criterion of an asphalt mix is its adhesiveness; the adhesion capacity among materials. This adhesive capacity of the asphalt mix can be measured in the laboratory through qualitative or quantitative tests. The result of this analysis should be used as a reference for the improvement of the mix. In the laboratory this can be achieved using additives while at the plant it can be achieved using differing mixer technology an

A huge surplus of waste tyres and a strengthening commitment towards sustainability from local authorities has prompted asphalt supplier Tarmac to invest in technology to add crumb rubber to its mixes "Local authorities want to be green, sustainable and environmentally friendly,” said Tarmac’s technical director Brian Kent. “I get the sense that these issues are more important to them now. I do think we are going to get some traction.” Around 40 million tyres are worn out every year in the UK. Though