5.4.12. Alkali-Silica Reactivity (ASR) Test

Try these first

1. 1.

   What does ASR stand for?

   Hint

   Think about the chemical compounds involved.

2. 2.

   What is the main purpose of ASR testing?

   Hint

   Consider the impacts of aggregate reactivity.

3. 3.

   What chemical compounds initiate the alkali-silica reaction?

   • Calcium oxide
   • Sodium and potassium oxides
   • Aluminum oxide

   Hint

   Think about the components present in cement.

4. 4.

   The ASR test method is stated by which standard?

   • True
   • False

   Hint

   Consider the value of standardized testing methods.

5. 5.

   A concrete structure shows signs of cracking after five years. Describe the steps to investigate if ASR is the cause.

   Hint

   Focus first on the aggregates and then the testing.

6. 6.

   Propose a new construction project using potentially reactive aggregates. What precautionary measures would you implement?

   Hint

   Think about the materials and practices that can counter the issue.