22.5. Properties of Polymer-Modified Concrete

Try these first

1. 1.

   What does PMC stand for?

   Hint

   What kind of concrete incorporates polymers?

2. 2.

   Name one property that PMC improves over standard concrete.

   Hint

   Think about adhesion to surfaces.

3. 3.

   What key property of PMC significantly improves in comparison to traditional concrete?

   • Compressive Strength
   • Flexural Strength
   • Water Permeability

   Hint

   Think about how concrete behaves under stress.

4. 4.

   True or False: PMC has lower water permeability than standard concrete.

   • True
   • False

   Hint

   Consider the role of polymers in blocking water pathways.

5. 5.

   Calculate the expected reduction in water permeability when using PMC compared to normal concrete, assuming the normal concrete permeability is 10^-5 cm/sec and PMC is 10^-7 cm/sec.

   Hint

   Use the formula for comparing permeability rates.

6. 6.

   Discuss how the properties of PMC could influence the design of a bridge in a freeze-thaw climate.

   Hint

   Consider how environmental factors affect construction material selection.