What are the different types of shrinkage in concrete?

Concrete shrinkage types include: (1) Plastic shrinkage - before hardening, due to rapid surface moisture loss, causes surface cracks, (2) Drying shrinkage - after hardening, due to moisture loss, continues for years, (3) Autogenous shrinkage - self-desiccation in low w/c concrete, significant in HSC, (4) Carbonation shrinkage - due to carbonation reaction. Total shrinkage can be 300-800 microstrain. Control measures include proper curing, shrinkage-reducing admixtures, adequate reinforcement, joints, and aggregate selection.