2.1.4. Accelerators

Try these first

1. 1.

   What is the primary purpose of accelerators in concrete?

   Hint

   Think about conditions that require fast-setting concrete.

2. 2.

   Name one common accelerator used in concrete.

   Hint

   It's a common salt that helps with acceleration.

3. 3.

   What is the primary role of accelerators in concrete?

   • Slow down hydration
   • Speed up setting and strength gain
   • Increase water content

   Hint

   Consider the conditions that require rapid concrete setting.

4. 4.

   True or False: Calcium chloride can cause corrosion in reinforced concrete.

   • True
   • False

   Hint

   Think about how metals react with certain chemicals.

5. 5.

   A construction company needs to pour a concrete slab in winter but has concerns about delayed curing. They are considering using calcium chloride. What factors should they discuss before deciding?

   Hint

   Evaluate the benefits versus potential hazards.

6. 6.

   If using accelerators generally enhances early strength, explain how and why you might not use them in a project focused on long-term strength?

   Hint

   Think about the balance between early and long-term performance.