The grades are designated by the nominal penetration range at 25 DC.ĥ.2.3 Consistency at elevated service temperaturesĬonsistency at elevated service temperature for polymer modified bitumens shall comply with the requirements for softening point as indicated in Table 1. NOTE 2 In order to assist in using the tables, an example has been provided in Annex A.ĥ.2.2 ConsIstency at Intermediate service temperaturesĬonsistency at intermediate service temperature for polymer modified bitumens shall comply with the requirements for penetration at 25 ☌ in Table I. The appropriate class for each technical requirement or application is selected in turn and the selection of classes should be made from past experience of successful use, on a regional basis, in order to avoid unworkable combinations. It is useful for each country to publish in a national guidance document for each applicadon, their requirements for polymer modified bitumens from Table 1, Table 2 and Table 3. NOTE 1 Each country w11 then have a particular selection of specifications, which, if regulated, are covered in Tables I and 2 and which, if commonly used by industry, are covered Mi Table 3. EN 14023-2010 pdf download.Bitumen and bituminous binders – Specification framework for polymer modified bitumens.