Cement
What Is Cement?
Cement is a powdery substance made with calcined lime and clay. It is mixed with water to form mortar, and can also be mixed with sand, gravel and water to form concrete.
What Is Cement?
Who Invented Cement?
A man named Joseph Aspdin invented cement by burning finely ground chalk and clay in a kiln, until the carbon dioxide was removed.
Who Invented Cement?
When Was It Invented?
Cement was invented in 1824 in Portland, England.
When Was It Invented?
What Is Cement
Used For?
Cement is a main ingredient of concrete, which is used to make sidewalks, buildings, and foundation for houses. It is also used to make mortar, a paste that helps bind certain things together, such as stones and bricks. This caught on and became popular, because it made building/fixing things a whole lot easier.
Pros of Cement
-Has helped to make building homes alot easier
- Is a main ingredient in concrete
- Used to build pillars/decks which help keep houses and buildings stable
- Is also an ingredient in mortar, which makes fixing and binding things a lot easier
Pros of Cement
Cons of Cement
-Cement dust contains high levels of Crystalliane Silica, which is toxic
- Concrete causes damage to the most fertile layer of the earth, the topsoil
- Contact with wet cement can do serious damage to skin
Is Cement Good or Bad?
I think cement is a good thing, because it has helped making building a lot easier, which means the buildings are safer and less likely to fall down/burn down, where as if they were made of wood, they could catch fire or rot or wear down a lot easier.