4.2. For Shrinkage

Try these first

1. 1.

   What is plastic shrinkage?

   Hint

   Think about what happens right after you pour concrete.

2. 2.

   Name one factor that affects shrinkage.

   Hint

   Consider how the mix influences the setting properties.

3. 3.

   What type of shrinkage occurs soon after concrete placement due to evaporation?

   • A) Drying Shrinkage
   • B) Plastic Shrinkage
   • C) Autogenous Shrinkage

   Hint

   Think about moisture loss immediately after pouring.

4. 4.

   True or False: Higher water-cement ratios usually lead to increased drying shrinkage.

   • True
   • False

   Hint

   Consider how the mix ratio affects the overall structure.

5. 5.

   A civil engineer is faced with unexpected cracking in a road pavement due to shrinkage. Analyze the potential causes and suggest appropriate mitigation measures.

   Hint

   Think about how environmental factors and mix design affect the final product.

6. 6.

   Develop a comprehensive testing plan for assessing shrinkage in a new concrete mix designed for high durability. Include testing age, methodology, and expected outcomes.

   Hint

   Consider both laboratory settings and real field scenarios for testing.