Warm-mix asphalt is hot. Asphalt industry officials believe warm mix, porous asphalt pavement and reclaimed asphalt pavement (RAP) will come to dominate paving in the next few years because the products offer lower costs and higher environmental benefits than traditional hot mixes. Photo: Pat Monroe Photo: Aileen Cho / ENR Attendance was up at World of Asphalt 2009, fueled by warm-mix applications. Related Links: World of Asphalt 2009: Warm All Over “The warm-mix revolution is starting to spread,” said Matthew Corrigan, asphalt pavement engineer with the Federal Highway Administration, addressing attendees of the Asphalt Pavement Conference on March 9 in
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.