Concrete cures to it's full hardness in 28 days assuming proper
conditions (temp., proper watering, etc).

Are you sure they were letting it sit for a year just to cure? Or
were they still working on it?


On 22 Nov 2004 13:52:10 -0800, (Al Bundy) wrote:


One of the first expressways, the Davison in Detroit, was let to cure
for one year, and lasted 50 years.