What is the primary reason concrete has a significant environmental impact?
TED: A concrete idea to reduce carbon emissions | Karen Scrivener

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Biology, Arts, Architecture, Engineering
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11th Grade - University
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It is used in large volumes globally.
It is the most used material on Earth.
It is more energy-intensive than steel.
It has high CO2 emissions per ton.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main source of CO2 emissions in the production of Portland cement?
Heating limestone and clay to high temperatures.
The breakdown of limestone into calcium oxide and CO2.
The use of fossil fuels in the production process.
Transportation of raw materials.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is LC3 primarily composed of?
Limestone, calcined clay, and cement.
Iron, steel, and bricks.
Recycled concrete and glass.
Sand, gravel, and water.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is Portland cement so widely used globally?
It has the highest strength among all building materials.
It is made from abundant materials and can be produced almost anywhere.
It is the cheapest material available.
It requires the least amount of energy to produce.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the potential annual CO2 reduction if LC3 is widely adopted?
100 million tons
200 million tons
300 million tons
400 million tons
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