12.2. Rheometers

Try these first

1. 1.

   Define rheology.

   Hint

   Think about the flow behavior of materials.

2. 2.

   What is yield stress?

   Hint

   It's a specific kind of stress related to starting flow.

3. 3.

   What is the primary focus of rheology?

   • Effect of temperature on materials
   • Behavior of materials under stress
   • Flow and deformation of materials

   Hint

   Focus on what materials do when moving.

4. 4.

   Yield stress refers to:

   Hint

   Think about how force affects the start of motion.

5. 5.

   Consider a scenario where the yield stress of an SCC mix is too high. What are the potential implications for construction?

   Hint

   Think about how this affects pouring and stability.

6. 6.

   How would modifications to plastic viscosity impact the performance of SCC in a congested rebar environment?

   Hint

   Visualize how viscosity changes could interact with congestion.