Weather for Lihue, HI. Overcast 69.6Â° Feels like 69.6Â° High: 79Â° Low: 72Â° Current conditions as of 04/21/17 5:40 AM HST. Humidity: 91% Visibility: 10.0 mi Dewpoint: 67Â° Barometer: 30.06 in Wind: SW Sunrise: 6:12 AM Sunset: 06:59 PM.
The American Concrete Institute recommends a maintained temperature of 70 degrees F for three days or 50 degrees F for five days to gain sufficient strength for a cold pour to perform up to specification.
Conventional concrete setting times are bit more subjective. Assuming that optimum temperatures are present during pouring and setting, you can *possibly* walk it in 24 hours, but gently. I like to wait 48 hours to be on the safe side. It will take 7 days to reach 2,500 lbs.he only stupid question is the one not asked. Not only can you get DIY advice at the Chatroom but a bit of Chinese philosophy as well. ****************************. The fast setting concrete answer is easy. You can walk it in 2 hours and set heavy objects in 4 hours.