New product announcements: 04/21/2010 Air-powered Mixer: Works With Many Materials The CS Unitec Model 7 Air Mixer is intended for mixing paint, glue, epoxy, mortar, concrete, refractory cement and other materials in hazardous environments. The mixer is ATEX-approved for use in EX zones with hazardous atmospheres and is safe to be used around water. The mixer’s 1.5-hp motor has two speed settings: zero to 190 rpm and zero to 350 rpm. The device has the capacity to mix batches of material up to 110 lb. The mixer uses 49 cfm of air at 90 psi and weighs only 15 lb.
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.