If it doesn't shrink (setting polymers, cooling wax) it will probably expand, such as various plasters and cements. In both cases, some have lower shrinkage (heavily reinforced fiberglass) or expansion, such as:
Gypsum Cements Hydrostone, Hydrocal and Ultracal 30 ceramicartsdaily.org/wp-content/uploads/2015/06/KnowYourPlaster.pdf
or "non-shrink" grouts, some of which are quite good.