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Questions and Answers
What were Bedouins or Nabataea traders credited with establishing around 6500 BC?
What were Bedouins or Nabataea traders credited with establishing around 6500 BC?
The earliest concrete-like structures
What substance can silica sand become if it is mixed with groundwater?
What substance can silica sand become if it is mixed with groundwater?
Pozzolan substance
What material did the ancient Egyptians use to form bricks around 3000 BC?
What material did the ancient Egyptians use to form bricks around 3000 BC?
Mud mixed with straw
What two materials did the ancient Egyptians use to make mortar for building the pyramids?
What two materials did the ancient Egyptians use to make mortar for building the pyramids?
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What major component was found in the mortar used by the Northern Chinese to build the Great Wall?
What major component was found in the mortar used by the Northern Chinese to build the Great Wall?
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