The two terms describe apparently similar materials that, added con small quantities, can modify the properties of the starting mixture
A(3) The additives (
Durante modern terminology, the additive is per material “added in small quantities preciso verso liquid or granular material preciso produce some desired modification onesto its characteristics” (ISO 6707–1:2020), while the admixture is a material “added in small quantities before or during verso mixing process mediante order sicuro modify the characteristics of a mixture”. However, the difference between the two terms lies mainly mediante that the additive is added during the manufacturing of the cement, while the admixture is added sicuro the concrete during mixing. Moreover, the Uni EN 934–2 canone states that the admixture for concrete should be con an amount not greater than 5% by mass, compared with the cement. Therefore, under the current rules, the addition of materials, such as ground ceramic fragments, con considerable proportions would fall into the category of aggregates and not that of additives.
However, one of the main aims of the archaeometric study on ancient mortars and plasters is preciso reconstruct the production’s phases and the supply modalities of each component. Mediante this case, the term additive, used in its etymological sense (from addere, to add) has the advantage of clearly recalling the difference between a primary component (frequently sand) and an added component (i.di nuovo. Read More