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From the Portland Cement Association:
Bricklayer Joseph Aspdin of Leeds, England first made portland cement early in the 19th century by burning powdered limestone and clay in his kitchen stove. By this crude method he laid the foundation for an industry which annually processes literally mountains of limestone, clay, cement rock, and other materials into a powder so fine it will pass through a sieve capable of holding water. Cement is so fine that one pound of cement contains 150 billion grains.
So, I think you could say that cement is a rock (limestone) derivative.
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∙ 13y ago
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What is bulkage of cement?
when water is added to the cement,cement volume decreases due to removal of air from cement particles. this reduction in cement volume is the bulkage
What is cement cement price?
1200sq. ft og cement what cost?
What is de difference between ordinary portland cement and masonry cement?
Masonry cement is similar to OPC but has a plasticiser added to the cement powder. As a bag of masonry cement contains 75% cement powder and 25% plasticiser, a higher proportion of cement must be used.
How many types of cement are there?
Basically there are three types of cement namely,OPC - Ordinary Portland CementPPC - Portland Pozzolona CementSpecial CementsBasically we can divide cement in different types-Natural cementPozzolanic cement:Portland cementHigh alumina cementSuper sulphate cementSpecial cement
Why is foundation cement gray and sidewalk cement white?
The cement is grey due to the presence of iron oxide.The cement is white due to the absence of iron oxide.Generally white cement has more strength than grey cement and it is more expensive.
Which rock was used to build the roman Colosseum?
It wasn't rock, but cement. The Romans invented cement and used it on everything.
Which rock is used to make cement?
limestone is used to make cement
Is cement block a Sedimentary rock?
no, it's not a sedimentary rock
What Sedimentary rock is used in cement?
The sedimentary rock that is used in making cement is limestone. Cement, which is used in making concrete, is a mixture of marl and lime.
What rock is needed to make cement?
Limestone is refined to make portland cement.
How much sand rock and cement is needed to mix 1 yard of concrete?
19,000lbs of rock. 1340 sand. 338 cement.
Is rock and cement asphalt the same?
No. Rock is defined by being made up of minerals. Cement is used to made pavement by mixing rock and other materials. Asphalt is a semi solid material used in the production of oil and pavement. Asphalt and cement are commonly used together.
What do you call rock and cement when there mixed together?
cemock
What is road made of?
It is made of rock and cement.
Is cement block a rock?
it is a rock because it is made up of tiny rocks
Can you recycle the dead human?
can you recycle "dead cement" by crushing it in cement mixer with big rock as pulverizing devises.
What sedimentary rock is used to make cement?
Limestone is the sedimentary rock that is used to make cement. Some limestone is made of old coral reefs that have been buried by deposits.
