29.3. Temperature stresses

Try these first

1. 1.

   What causes temperature stresses in rigid pavements?

   Hint

   Think about the daily and seasonal effects.

2. 2.

   What is warping stress?

   Hint

   Consider daily temperature variations.

3. 3.

   What is the primary cause of temperature stresses in cement pavements?

   • Friction
   • Temperature Variation
   • Subgrade Reaction

   Hint

   Think about what affects material expansion and contraction.

4. 4.

   True or False: Warping stresses are created by seasonal temperature variations.

   • True
   • False

   Hint

   Recall the difference between daily and seasonal changes.

5. 5.

   Given a slab of thickness 20 cm with a modulus of elasticity of 300,000 kg/cm², calculate the warping stress induced by a temperature gradient of 15°C. Assume relevant coefficients.

   Hint

   Remember to break down the equation into parts for lesser complexity.

6. 6.

   Analyze how seasonal temperature changes affect frictional stresses in a concrete pavement using the unit weight and coefficient provided in the frictional stress formula.

   Hint

   Focus on the formula and ensure units match for accurate calculations.