8.2. Shrinkage Test Setup

Try these first

1. 1.

   What is the purpose of using sealed specimens in shrinkage testing?

   Hint

   Think about why we would want to keep moisture in.

2. 2.

   Which standard outlines the method for measuring concrete shrinkage?

   Hint

   This standard is essential for concrete testing procedures.

3. 3.

   What measurement method does ASTM C157 specify for concrete?

   • Compression Testing
   • Length Change Measurement
   • Flexural Testing

   Hint

   Focus on the primary purpose of the ASTM C157.

4. 4.

   True or False: Sealed specimens prevent moisture loss during shrinkage measurements.

   • True
   • False

   Hint

   Think about what 'sealed' means.

5. 5.

   Design an experiment comparing drying shrinkage and autogenous shrinkage using both sealed and unsealed specimens. Include your hypotheses, methods, and expected results.

   Hint

   Remember to consider moisture loss as a primary factor influencing shrinkage.

6. 6.

   Discuss how differing environmental conditions might impact the results of your shrinkage tests. Consider both high and low humidity.

   Hint

   Think about how moisture in the air affects concrete.