Posts Tagged 'infrastructure'

Drone Footage Of Tunnel Construction [video]

Change – NOT Improvement

infrastrAP reports –

LANSING, Mich. (AP) – Some Michigan counties have turned a few once-paved rural roads back to gravel to save money. More than 20 of the state’s 83 counties have reverted deteriorating paved roads to gravel in the last few years, according to the County Road Association of Michigan. The counties are struggling with their budgets because tax revenues have declined in the lingering recession. Montcalm County converted nearly 10 miles of primary road to gravel this spring. The county estimates it takes about $10,000 to grind up a mile of pavement and put down gravel. It takes more than $100,000 to repave a mile of road. Reverting to gravel has happened in a few other states but it is most typical in Michigan. At least 50 miles have been reverted in the state in the past three years.

Scientists Develop Self-healing Concrete

UPI reports –

U.S. scientists say they have developed a concrete material that can heal itself when it cracks with only water and carbon dioxide needed.

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