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.
In order to avoid harmful effect of hot weather concreting IS: 7861 (Pt.1) recommends that temperature of ingredients should be controlled so that the temperature of produced concrete is lower. Mixing water has the greatest effect on lowering of temperature of concrete. The use of chilled water/ flaked ice in mixing produces adequate reduction in concrete temperature. In order to control the temperature of concrete and to avoid adverse effect of hot weather, it is desirable to limit the maximum temperature of concrete as 350C to keep margin for increase in temperature during transit.