9.2. Elastic Properties

Try these first

1. 1.

   What does the Modulus of Elasticity tell us about concrete?

   Hint

   Think about how much the concrete will deform.

2. 2.

   Define Poisson’s Ratio in your own words.

   Hint

   Focus on how concrete behaves in two directions when stress is applied.

3. 3.

   What does the Modulus of Elasticity measure?

   • A. Stiffness of concrete
   • B. Tensile strength of concrete
   • C. Compressibility of concrete

   Hint

   Consider what E refers to, related to deformation under load.

4. 4.

   True or False: A higher Poisson’s Ratio means that lateral strain is significantly less than axial strain.

   Hint

   Think about the relationship between the two strains.

5. 5.

   Given a concrete with a compressive strength of 30 MPa, calculate the Modulus of Elasticity. Discuss how this affects structural design.

   Hint

   Use the modulus formula and remember the significance of stiffness in design.

6. 6.

   Discuss the implications of having a Poisson's ratio upper limit of 0.25 for a specific type of high-strength concrete.

   Hint

   Think about high strength influencing deformation.