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 - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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