As a result of the actions undertaken during Stages 1-4, the present mix is distinguished by a very high proportion of coarse particles (the strong skeleton) and the maximum discontinuity of gradation allowed by the gradation curves of SMA 0/11 according to ZW-SMA-2001. The share of the coarse aggregate fraction was fixed all the time at the level of 75% (m/m). Keeping in mind the impact of the size of coarse aggregate fraction on the content of voids and binder, specimens can be prepared and then tested to check their characteristics, and finally some final refinements to the fraction in question can be made.
But there is still a question, is it a good SMA mixture? Let us compare our newly designed very coarse SMA to the German recommendation and the 30-20-10 rule.
