Assertion: mortar's additive | /r/AtLocation | the mix
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Frost proofers, accelerators and colour additives can be included in the mix as required.
text: Often, additives (such as pozzolans or superplasticizers) are included in the mixture to improve the physical properties of the wet mix or the finished material.