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Questions and Answers
How long has cement been around?
How long has cement been around?
- Around 1 million years
- At least 12 million years (correct)
- Around 5000 years
- Less than 100 years
Who first put cement to use?
Who first put cement to use?
- Dinosaurs
- Plants
- Humans (correct)
- Aliens
What is the general definition of cement?
What is the general definition of cement?
- A material with no specific properties
- A material used for building pyramids
- A material developed in the last century
- Any material with adhesive properties (correct)
What did the Assyrians and Babylonians use to make cement?
What did the Assyrians and Babylonians use to make cement?
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What did the Egyptians use to build the pyramids?
What did the Egyptians use to build the pyramids?
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Study Notes
History of Cement
- Cement has been around for thousands of years, with its earliest use dating back to ancient civilizations.
Ancient Use of Cement
- The earliest known use of cement was by the ancient Greeks, who used a mixture of lime and volcanic ash to create a binding agent.
Definition of Cement
- Cement is a fine powder that is made from limestone, clay, and other minerals, and is mixed with water to create a paste that binds together aggregates like sand and gravel.
Ancient Mesopotamian Cement
- The Assyrians and Babylonians used a mixture of lime and clay to create a type of cement.
Ancient Egyptian Construction
- The Egyptians used a mixture of gypsum and lime to build the pyramids, with gypsum being the primary binding agent.
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