Engineering

New concrete possibilities from waste materials

The use of recycled concrete and glass aggregates in concrete production has emerged as a highly promising means of increasing the recycling rate of waste materials—but durability issues have plagued some combinations of ...

Engineering

Concrete versus asphalt for Nigeria's roads: which is better?

Nigeria's new works minister, David Umahi, is pushing for the use of rigid pavement in road construction, as against the flexible pavement predominantly in use. This, as the minister noted, is due to the precarious state ...

Engineering

Photocatalytic concrete for clean air in underground tunnels

The air quality in underground road tunnels tends to be worse than in other road environments due to the poor air circulation. To address this issue, researchers at the Korea Institute of Civil Engineering and Building Technology ...

Engineering

New technology to reduce potholes

Researchers have developed new "intelligent compaction" technology, which integrates into a road roller and can assess in real-time the quality of road base compaction. Improved road construction can reduce potholes and maintenance ...

Energy & Green Tech

How Canada's oilsands can help build better roads

The future seems bleak for Canada's oilsands. But given the world's ongoing need for smooth, safe roads, there is hope for the industry. Asphalt binder made from oilsands bitumen is the ideal glue to hold the world's 40 million ...

Engineering

Knitting roads: Digitalized road construction uses no concrete

A robotic arm lays out a string in a mandala-like pattern on a bed of gravel. What appears to be a contemporary art performance is basic research that explores new ways in road construction. On the one hand, robot-assisted ...

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