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Concrete is made of a mixture of cement, aggregate (small stones), fine aggregate (sand), water and other chemical additives. When mixed the wet concrete will remain so for
Most people assume that set concrete has no water in it, this is not so, as the water content helps bond the aggregates and cement, this process is known as Hydration. Concrete with no water in it would crumble to dust.
Adding more water to the mix will make a concrete that is easier to work, while less water will produce a stronger, more durable concrete.
After initial setting of the concrete, a slow amount of water loss is expected due to the concrete drying, it can take anything up to a year for water to stop evaporating slowly out of the concrete. So for this reason the answer to your question is yes, dry, set concrete will weigh less than wet concrete, but for anything up to a year it will keep getting lighter, due to waterloss.
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Is wet concrete stronger than dry concrete?
no
Can you lay wet concrete on dry concrete?
This may be possible if you prep the dry concrete with a latex bonding agent.
Can you apply wet concrete to dry concrete?
Yes, you can. You should clean the dry concrete with water and a brush first, and you should use a bonding agent (available pretty much anywhere you buy concrete) for optimal adhesion. You may also wish to add reinforcement such as rebar.
Is unset concrete heaver than set concrete?
No, not relly. You might get a bit of water evaporation but generaly 1 cubic meter of concrete is about 2.2 tons, wet or dry. Regards Colin
What is heavier a concrete block or a brick?
Concrete block.
