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What else can I help you with?
How long must concrete dry before it rains on it?
First of all, concrete does not "dry" to become hard. It cures, which is a chemical interaction between its water and its portland cement. Usually, a couple of hours is plenty of time for concrete to 'set' enough to not be damaged by rain. The best and strongest concrete never dries out for the first 28 days from pouring it.
How long for bagged concrete to cure?
Concrete never fully cures, but a non-quicksetting concrete should be firm on the surface in about 4-8 hours, and usable for foot traffic or post setting in 36 hours.
One should never cut or weld directly against?
You should not weld on concrete, as it can explode if heated
How can you permanently retard fresh concrete?
Regular sugar will cause the concrete to never set.
How big can a floating concrete slab be?
no matter how big the concrete slab is, it will never float
Can white cement be used for filling cracks in cement wals etc?
I've never heard the term 'white cement', but there are many good cement crack fillers available. I have used 'Stone Mason Liquid Crack Filler' and DAP Liquid Cement Crack Filler and been satisfied with both. You should look in the cement and concrete aisle in Home Depot. -
Is concrete a homogeneous?
Within the concrete, there is cement, aggregate, and water. Cement is simply a glue that holds the rock or other aggregate together. Water activates the cement. Even cement itself isn’t a homogenous mixture, which means concrete could never be homogenous.
How long must concrete dry before it rains on it?
First of all, concrete does not "dry" to become hard. It cures, which is a chemical interaction between its water and its portland cement. Usually, a couple of hours is plenty of time for concrete to 'set' enough to not be damaged by rain. The best and strongest concrete never dries out for the first 28 days from pouring it.
How long for bagged concrete to cure?
Concrete never fully cures, but a non-quicksetting concrete should be firm on the surface in about 4-8 hours, and usable for foot traffic or post setting in 36 hours.
One should never cut or weld directly against?
You should not weld on concrete, as it can explode if heated
How can you permanently retard fresh concrete?
Regular sugar will cause the concrete to never set.
How big can a floating concrete slab be?
no matter how big the concrete slab is, it will never float
What are the treatments for intake of cement from humans through esophagus?
never heard.
Did the Russian gov resolve the Chernobyl accident by covering Chernobyl with cement?
No Covering it with cement will Never work, because the cement can only absorb a certain amount of radiation before it starts leaking through, and this will always happen because there is no way to completely contain it. If you imagine a piece of foam and you run it under a tap, what happens here is it absorbs water, but it can only absorb so much before it starts to leak out. Radiation works in a similar way. Materials like concrete and cement can only absorb so much radiation before it starts to leak through.
Does it expand and contract Even after concrete is dry?
No. Concrete never gets any bigger than the day it is poured.
Is mixing cement and water a irreversible change?
Mixing cement and water is a reversible change because the two substances can be separated by allowing the water to evaporate, leaving the solid cement behind. This process does not alter the chemical composition of either the cement or the water.
What materials were used to build the lighthouse?
Wood lighthouses were common before the 19th century because wood was readily available. It was phased out as a primary material due to the susceptibility to fire. Masonry towers were made from rubble stone, cut stone, brick and concrete. Sometimes lighthouses are made with Rubble stone, cut stone, brick, and concrete.
