Advice to specifiers - Concrete Mix Design, Quality Control and Specification - page 5

and therefore not representative of drying of standard concrete elements
exposed to drying in most environments. Higher strength concrete with
higher cementitious contents tends to exhibit lower shrinkage in these
tests. However, such mixes may have greater movement due to higher peak
temperatures and more autogenous shrinkage, which are not measured in
the test.
We would recommend using models such as CIRIA C660 to help
determine if shrinkage is a problem and specify a shrinkage limit or a
shrinkage-reducing admixture when necessary. Curing by water ponding
or the use of saturated lightweight aggregate are good ways to limit or even
eliminate autogenous shrinkage.