Concrete is made of a combination of cement, an aggregate such as gravel, and water. If that mixture dries too quickly, then cracks can form within it as it cures. Now, however, scientists have ...

Fly ash generated by coal-fired power stations is an environmental headache, creating groundwater and air pollution from vast landfills and ash dams. Some of the waste product can be repurposed into ...

As Duke Energy ships coal ash across the Piedmont to dump it in a former clay mine, Charlotte’s largest concrete company is negotiating to buy ash in Asia. Ash, the focus of a statewide cleanup that ...

A new large-scale trial by RMIT University and Bristile Roofing has turned two of Australia’s toughest waste streams into ...

Concrete production is one of the largest sources of carbon dioxide emissions in the world, after transportation and energy. To make the ubiquitous building material more environmentally friendly, the ...

The Charlotte region’s bounty of Duke Energy coal ash leaves Henry Batten, president of the city’s largest ready-mix concrete company, with the richest of ironies. Concrete Supply Co., whose product ...

Engineers have developed a composite binder made primarily of fly ash, a byproduct of coal-fired power plants, that can replace Portland cement in concrete. Rice University engineers have developed a ...

The construction industry, a major contributor to greenhouse gas emissions, is under increasing pressure to adopt sustainable practices. One promising avenue lies in the utilization of agricultural ...

More than 1.2 billion tonnes of coal ash were produced by coal-fired power plants in 2022. In Australia, it accounts for nearly a fifth of all waste and will remain abundant for decades to come, even ...

Imagine concrete buildings filled with volcanic ash—ash that's embedded into the walls making them stronger and more environmentally friendly. That's what a team of international scientists sees in ...