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  • Denver's New International Airport

    Scheduled to open in December 1993, Denver's new $2.7-billion International Airport will be the nation's second largest public works project.

     
  • Isolation and Expansion Joints in Concrete Pavements

    The purpose of isolation and expansion joints is to prevent damage from differential movements.

     
  • Foundation Repair

    A small percentage of foundations fail or become distressed, and the deficiency usually puts much more than the foundation at risk.

     
  • Concrete Boom Trucks

    Dependability is one of the hallmarks of modern boom trucks. They work hard and run long. Breakdowns are rare. In addition, they place concrete quickly and efficiently. Some pumps are capable of delivering more than 200 cubic yards of concrete per hour. Versatility is another attribute of today's...

     
  • U.S. Tour of European Concrete Highways

    During the summer of 1992, a group of 21 U.S. highway and pavement experts including contractors, engineers, and representatives of government and trade organizations observed the condition and construction of highways in western Europe. Called the U.S. Tour of European Concrete Highways (U.S...

     
  • Students Paddle It Out in Concrete Canoe Competition

    In June 1993, students gathered in Sacramento, Calif., to find out who had the best-designed and fastest concrete canoe. They represented 20 universities that had claimed regional championships and been invited to take part in the Sixth Annual American Society of Engineers National Concrete Canoe...

     

PROBLEM CLINIC

  • Old Reinforcing Bar Systems

    Where can we find information on systems for reinforcing building slabs built in the 1930s, and earlier?

     
  • Patching With Black Concrete

    We sometimes patch existing asphalt parking lots with concrete. On a couple projects, we sawcut the area to be patched, removed the bad material, and replaced it with air-entrained concrete. This seems to be economical. The one drawback is the patches are

     
  • Curing Lightweight-Concrete Test Cylinders

    For the first time in years we have a job calling for lightweight concrete, but we haven't kept up-to-date on specifications for testing. The aggregate supplier told us to air dry the test cylinders after a seven-day moist cure. Is this correct?