Rock arch rapids would replace two 1937-era concrete dams, one of which would serve as the outlet for Lake Calhoun and the other on the diversion channel or Kandiyohi County Ditch 20. Vo Naw, left, ...
Affordable, versatile, incredibly strong and locally available, concrete is the world’s most used manmade material. But it also has a huge carbon footprint, accounting for around 8% of global ...
From left, Purdue University graduate students Paul Imbrock, Kambiz Raoufi and John Schlitter pour concrete for a test specimen in research to improve Indiana bridges. The state is using a new type of ...
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