Dozens of Brooklynites raged Wednesday over a city-run concrete recycling facility that has ... system by the spring to help keep the piles wet to keep them from flying. “We are taking all ...

In order to address that problem, the researchers started with wet concrete in which all the aggregate consisted of tire particles, then placed that concrete in special steel molds as it was setting.

The team has also shown that the printers can extrude thin steel wires along with the wet slurry, thus reinforcing those parts of the structure where concrete alone isn’t strong enough—and ...