or more of these parameters to be specified as a rejuvenation parameter, whether in terms of minimum values to be attained or whether a minimum improvement must be achieved. Application trial section The onus is on the applicant to organise a trial section conforming to the applicable requirements as shown in Table 4. Table 4: Application trial site requirements (O'Connell, 2017) Property Requirement Surface condition Good condition, with no major fatigue distress. Asphalt mix paving, preferably medium continuous mix using Substrate unmodified binder Sufficient to accommodate the recommended spray rate, in applicant’s Texture depth order to prevent run-off and tackiness Average daily truck traffic 80 ≥ Age years ≥ 3 Testing and performance of trial section The evaluation procedure of the trial section is indicated in Tables 5 and the property requirements are listed in Table 6. Table 5: Performance sampling and testing (O' Connell, 2017) Time period Sampling Process / Testing Visual condition Prior to application Skid resistance 1 x 100 mm core GC analysis Application Leave 10 m2 untreated – Visual condition After drying 1 x 100 mm core GC analysis 20 24 hours - Skid resistance – - Visual condition 30 days 1 x 100 mm core GC analysis - Visual condition 11 x 150 mm cores in treated GC analysis 3 months area, Cantabro 11 x 150 mm cores in untreated @ 28°C G*.Sinδ area δ - Visual condition 6 months 1 x 100 mm core GC analysis Visual condition 2 x 100 mm cores: Treated and 12 months untreated areas GC analysis
or more of these parameters to be specified as a rejuvenation parameter, whether in terms of minimum values to be attained or whether a minimum improvement must be achieved. Application trial section The onus is on the applicant to organise a trial section conforming to the applicable requirements as shown in Table 4. Table 4: Application trial site requirements (O'Connell, 2017) Property Requirement Surface condition Good condition, with no major fatigue distress. Substrate Asphalt mix paving, preferably medium continuous mix using unmodified binder Texture depth Sufficient to accommodate the applicant’s recommended spray rate, in order to prevent run-off and tackiness Average daily truck traffic ≥ 80 Age ≥ 3 years Testing and performance of trial section The evaluation procedure of the trial section is indicated in Tables 5 and the property requirements are listed in Table 6. Table 5: Performance sampling and testing (O' Connell, 2017) Time period Sampling Process / Testing Prior to application Visual condition Skid resistance 1 x 100 mm core GC analysis Application – Leave 10 m2 untreated After drying Visual condition 1 x 100 mm core GC analysis 20 – 24 hours - Skid resistance 30 days - Visual condition 1 x 100 mm core GC analysis 3 months - Visual condition 11 x 150 mm cores in treated area, 11 x 150 mm cores in untreated area GC analysis Cantabro G*.Sinδ @ 28°C δ 6 months - Visual condition 1 x 100 mm core GC analysis 12 months 2 x 100 mm cores: Treated and untreated areas Visual condition GC analysis
2a_oconnell_the-evaluation-of-asphalt-mix-surface-rejuvenators-in-sa.docx