Mention some similarities and differences between modern cement and ancient cement.

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Solution

The similarity between modern cement and ancient cement is that limestone is the primary ingredient of both.

The difference between modern cement and ancient cement is that modern cement contains clay, gypsum, and silica as well in addition to limestone. Ancient cement was an agglomerate of limestone and volcanic ash.

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Similar questions

Which kind of cement was used in construction during ancient times?

Statements

Some bricks are rocks.

Some rocks are sands.

No sand is cement.

Conclusions

I.Some bricks are cements.

II.Some bricks are sands.

III.Some sands are rocks.

IV.No rock is cement.

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