EC2 2023: Time dependent behavior of materials

[mortenengen]

• [ ] Development of concrete strength and stiffness with time (B.4).
• [ ] Creep coefficient for concrete (B.5).
• [ ] Shrinkage strain of concrete (B.6).
• [ ] Relaxation of prestressing steel (B.9).

[mortenengen]

@aperezcaldentey will start working on this topic.