5.2. Types of AAR

Try these first

1. 1.

   What is AAR?

   Hint

   Think about what happens during this reaction.

2. 2.

   What is ASR commonly associated with?

   Hint

   Recall the types of materials involved.

3. 3.

   What does AAR stand for?

   • Alkali-Aggregate Reversal
   • Alkali-Aggregate Reaction
   • Aggregate-Alkali Reaction

   Hint

   Remember the full form of this acronym.

4. 4.

   True or False: Alkali-Carbonate Reaction is more common than Alkali-Silica Reaction.

   • True
   • False

   Hint

   Think about the prevalence of each type of reaction.

5. 5.

   Given a scenario where a bridge made with reactive aggregates shows signs of ASR after 3 years, propose a remedial plan and preventative measures that should have been undertaken during the design phase.

   Hint

   Consider the balance between addressing current issues and preventing future ones.

6. 6.

   Examine the role of temperature and moisture in amplifying the effects of AAR, particularly referring to case studies.

   Hint

   Think about environmental factors when evaluating AAR effects.