conventional

In 1997, Texas mixed discarded roofing shingles into two 1,000-foot Highway 31 test sections; years later, officials said their performance was comparable to conventional asphalt

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In 1997, Texas mixed discarded roofing shingles into two 1,000-foot Highway 31 test sections; years later, officials said their performance was comparable to conventional asphalt

Highway engineers in Texas have shown that discarded household roofing shingles can be recycled into durable road surfaces that perform as well as standard asphalt after years of heavy traffic. In 1997, the Texas Department of Transportation (TxDOT) built two 1,000-foot test sections along State Highway 31 in the Dallas District using hot mix asphalt … Read more

In 2024, England turned old fishing nets into a 16-metre footbridge; the 3.5-tonne structure needs smaller foundations and less maintenance than a conventional bridge

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In 2024, England turned old fishing nets into a 16-metre footbridge; the 3.5-tonne structure needs smaller foundations and less maintenance than a conventional bridge

The project used modular blocks, which mostly can be placed by hand, instead of traditional reinforced-concrete retaining walls. The blocks fit together like a Lego system, with little or no mortar needed. Old fishing nets seldom find a second life. But in Kent, England, the nets are being turned into something much more ambitious. The … Read more

In the 1990s, New York chose wetlands over conventional storm sewers on Staten Island; the Bluebelt strategy saved taxpayers $80 million in infrastructure costs

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In the 1990s, New York chose wetlands over conventional storm sewers on Staten Island; the Bluebelt strategy saved taxpayers $80 million in infrastructure costs

New York City The City of New York Mayor Michael R. Bloomberg Wetlands Strategy In the 1990s, New York chose wetlands over conventional storm sewers on Staten Island; the Bluebelt strategy saved taxpayers $80 million in infrastructure costs. Instead of laying miles of underground concrete pipes, the city preserved and restored natural streams, ponds, and … Read more