6. LPC Bituminous Mixtures Design Guide, Sept 2007. - Aapaq.org

LPC Bituminous Mixtures Design Guide- Type testing of bituminous mixtures -The calculation is described in Annex A of each standard from EN 13108 series andin clause 2.1.6.When the feedstock contains mainly reclaimed asphalt with paving grade bitumen,reclaimed asphalt are categorized as P 15 , if the binder of each of the sample is atleast 10 1/10 mm and the mean penetration of all samples is at least 15 1/10 mm or itis categorized as S 70 if softening point of each of the samples is not greater than77°C and the mean softening point of all of the samples is not greater than 70°C. Forother reclaimed asphalt category Pdec or Sdec means the mean penetration or themean softening point of all samples.It would be beneficial to distinguish the reclaimed asphalts of various sources fromthose that have undergone a generally complete identification (either by testing or byhistory) with respect to binder content and homogeneity, as well as the residualproperties of the recovered binder and aggregate characteristics.It is acknowledged that reclaimed asphalts from the first category may be used at arate of 10% in mixes not destined for surface courses.Reclaimed asphalts belonging to other categories may be recycled as wearingcourse components and, depending on the specific circumstances, at higherrecycling rates.For both porous asphalts, PA, and very thin layer asphalt concretes, BBTM, however,the inclusion of reclaimed asphalts is not recommended. For thin asphalt concretesof the A or B type, as a default precaution reclaimed asphalts are not authorized.The French standard application guide includes a table about the reuse rate ofreclaimed asphalt versus the use and the degree of knowledge of the material, thistable is coming from the former French Standard XP P98-135 Reclaimed asphalt.The reclaimed asphalt characteristics to be identified for reuse purposes have beensummarized in Table 5 below:- 50 -