3.3. Concreting

Try these first

1. 1.

   What type of materials are typically used for making molds in precast construction?

   Hint

   Think about the different materials we use in construction.

2. 2.

   Why do we clean and oil the molds before use?

   Hint

   Consider the importance of ease for removing the concrete.

3. 3.

   What is the main purpose of cleaning and oiling molds before use?

   • To make them look new
   • To prevent concrete adhesion
   • To increase mold weight

   Hint

   Think about what makes removing concrete easier.

4. 4.

   True or False: High-Performance Concrete (HPC) is known for its inferior durability.

   • True
   • False

   Hint

   Recall the defining characteristics of HPC.

5. 5.

   Design a quality control checklist for the concreting process in precast construction. Include all critical factors from mould preparation to finishing.

   Hint

   Consider every step in the workflow and what checks ensure quality.

6. 6.

   Evaluate the effects of different curing methods on the durability of precast concrete. Provide examples from relevant literature or studies.

   Hint

   Examine how hydration affects concrete over time.