Hydrated cement is not new cement, it becomes more like aggrigate with less strength, and is over hydrated. The reason concrete is poured at the correct slump is to assure the hydration rate is optimal for complete cure, but no more. Over hydrated sloppy concrete is weak, and must be torn out. Ask the people that are forced out of their buildings in Florida, or many projects in developing nations that fall down during, or years after construction. it is lso porous to water beyond correct slump concrete and will freeze into dust in freeze thaw cycles. Jim
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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