Posted by 2cents on November 22, 2016 at 05:06:36 from (208.68.114.28):
In Reply to: Concrete Question posted by pburchett on November 21, 2016 at 11:08:15:
I would pour it . 50º to 55º are perfect for curing concrete. Pour as early as possible have them take the flyash out of the mix (they will charge you more for this) If using a 4000psi mix ,consider a 4500 mix , the use of chloride(you can get as little as a 1/4% up to 2% ) is a great accelerator but is corrosive, so keep that in mind if you are using rerod and wire for reinforcement. If the plant is offering hot water (at a cost) It is usually a good idea. Definitely cover your concrete if exposed to temps below 32º. keep in mind once concrete reaches 500psi set strength (about the hardness for you to walk on it to start finishing) it will go thru a freeze thaw cycle and continue to gain strength.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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