Question

What are the typical ranges of drying shrinkage and creep strains in concrete; what is their significance?

Answer 1

These ranges are time dependent but some consideration are their

Range of drying shrinkage in concrete - 0.0002 to. 0.0004

Range of creep strains in concrete - 2 to 6

Significance

Drying shrinkage is cause by -

1. Compressive stresses in the micro-structure

2. Balancing changes in the capillary tension

3. Surface tension on pore

4. The disjoining pressure in hindered adsorbed water layers.

Concrete creep strain can be define as deformation of structure under sustained load. Factor such as

1- long term pressure or

2- stress on concrete can make it shape change.

*Deformation generally takes place within the path of the force is being implemented. Like a concrete column getting more compressed. Creep is recall factored in when concrete structures are designed while in influence on Aggregates, they undergoes very little creep. It is without a doubt the paste that is chargeable for the creep.Load eliminated Load carried out Elastic recuperation strain - Creep stress I Creep healing Elastic pressure everlasting deformation Time.

Here below figure is their for more understanding.