Brazil creates technology to cheapen construction
The Military Engineering Institute (IME), of Rio de Janeiro, in southeastern Brazil, developed a process that transforms clay into an input for concrete and tarmac. The coordinator of the study, Álvaro Vieira, stated that the product costs less than half of the price of gravel. Calcinated clay, as it is called, was created to simplify construction of highways in the Amazon region, where there is little availability of stone.
By Mark Ament
