Concrete.
Concrete
• The word concrete comes from the latin word “concretus”. Which
means compact.
• Now a days concrete is most common and necessary things in our life.
• It’s a composite material composed of course aggregate bonded
together with a fluid cement which hardens over time. Its an artificial
stone made of sand, stone, water & cement.
History
• The history of cementing materials together goes back to the time
when prehistoric man prepare his cave to build shelter.
• He used mud and clay to fill the gap between stone. To keep out the
wind and cold.
• Later the Assyrians