Betonin lisäaine, sen valmistus ja käyttö, sekä menetelmä betonin valmistamiseksi ja betoni

摘要

The invention relates to an additive for additive comprising stone powder, in which the particle diameter is 2€•1000 µm, which particles are coated with a substantially water-insoluble surface-active coating agent, and the use of the additive and a method for manufacturing the additive. The invention also relates to a method for improving the freeze-thaw durability of the concrete, and a concrete.