Question

What are the similarities between Modern cement and ancient cement.

Answer 1

1.	Basic Ingredients	Both modern and ancient cement are made from materials rich in calcium and silica. Modern Portland cement is made by heating limestone (calcium carbonate) with clay or shale (sources of silica, alumina, and iron) in a brick field at about 1450°C.
2.	Hydration Process	The hardening process of both modern and ancient cement involves hydration, where the cement reacts with water to form a hard, stone-like material.
3.	Durability	Both modern and ancient cement are valued for their durability.