Is the D-5 an expansion admixture?

No, the D-5 is not an expansion admixture. The concrete shrinkage with it is significantly less than without the D-5 admixture. Therefore, there are almost no shrinkage cracks in concretes with the D-5. Expansion admixtures can lead to self-destruction of concrete. With the D-5 admixture such risks are completely excluded.