Twelve concrete mixers are arranged in a circle in the center of a large rectangular space. They form an “erosion machine” designed to accelerate the decay of Vienna. The mixing drums are filled with architectural debris taken from various buildings across the city. The rotation of the mixers transforms these man-made angular bricks into round, organic forms. Over a long period of time and through continuous impact, the bricks are turned into pebbles and ultimately become powder. Inside the exhibition space this process is tangible through noise, clouds of dust, and vibration.
Source:http://juliusvonbismarck.com/bank/index.php?/projects/clockwork/