There’s plenty of irony in the possibility that fly ash, a by-product of coal combustion, now may be classified as a hazardous waste by the U.S. Environmental Protection Agency. It has been successfully recycled for years in what previously had been considered an environmental triumph. Punishing the sound environmental use of fly ash, especially as a substitute for cement in concrete, is the wrong direction. Exempting fly ash from Resource Conservation and Recovery Act provisions has allowed coal-combustion products (CCPs) to develop into a growing business. The use of fly ash in concrete is considered environmentally responsible because it replaces
The growing need to collect, store and analyze the huge volumes of data collected from infrastructure project stakeholders is generating a new growth area for construction-sector firms, IT vendors and professionals.