concrete

Building from old buildings: demolition waste is being turned into new concrete

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Concrete can perform just as well if three-quarters of its content has been recycled, a team has found. Concrete is made from granular materials such as sand and crushed stone – known as aggregates – bound together by a cement paste. Cement has a high carbon footprint due to the chemistry of its production and … Read more

Buildings, tunnels and bridges could soon repair themselves

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Stone and concrete structures with the ability to heal themselves in a similar way to living organisms when damaged could help to make buildings safer and last longer. Over time the weather, vibration, ground movements and general wear and tear can take their toll on the masonry and concrete used in buildings. But keeping buildings in … Read more