Question

modern cement and ancient cement​

Answer 1

Answer:

In general terms, the word cement refers to any kind of binder that tightly holds other materials together. Concrete, on the other hand, is a mixture of materials like sand, gravel, and small rocks combined with any type of cement and water. The concoction is then allowed to dry and harden

Explanation:

MARK ME AS THE BRAINLIEST AND GET 7 YEARS OF GOOD LUCK...........

Answer 2

Mordern cement is also known as Portland cement is the most commonly used cement for construction work.

It is made of raw material which consists of 60% lime (calcium oxide), 25% silica (silicon dioxide) and 5% alumina. The rest is iron oxide and gypsum (calcium sulphate).

Ancient cement is made by mixing volcanic ash in moist lime. It is a durable cement