21.4.5. Thermal Properties

Try these first

1. 1.

   What is thermal conductivity?

   Hint

   Consider how heat moves through materials.

2. 2.

   Name one benefit of polypropylene fibers.

   Hint

   Think about how these fibers react to heat.

3. 3.

   What does thermal conductivity refer to in materials?

   • Ability to absorb heat
   • Ability to conduct heat
   • Ability to reflect heat

   Hint

   Think about materials that feel hot or cold.

4. 4.

   True or False: Polypropylene fibers enhance the fire resistance of FRC by melting and creating microchannels.

   • True
   • False

   Hint

   Consider what happens to polypropylene at high temperatures.

5. 5.

   Design a fiber-reinforced concrete mix for a fire-prone area, considering the types of fibers to use based on their thermal properties. What are trade-offs?

   Hint

   Consider the benefits of fiber types alongside concrete performance.

6. 6.

   Evaluate how temperature fluctuations can affect the durability of FRC in different environments. What approaches can mitigate cracking?

   Hint

   Think about both material and environmental factors.