1Yvong HUNG, 2Gilles Gauthier, 3Sabine Largeaud, 4Bernard EckmannYvong.hung@total.com1Research Division, TOTAL Marketing & Services; 2Business line, TOTAL Marketing & Services; 3Research Division, EUROVIA; 4Technical Division, EUROVIA

LOW TEMPERATURE CHARACTERIZATION OF BITUMINOUS BIND ERS“A GEING SENSITIVENESS OF BINDER AND ASPHALT MIXTURE TEST METHODS”

� Huge investigation and time consuming� Materials quantities� Experiment field availability

� Effective binder performances “ranking”� Realistic ageing impact on binders� Distinguish long lifespan binder VS insidious ones

Which one of the binder test methods would be as“ageing sensitive” as TSRST asphalt mixture?

The truth according to the “Ageing vector criteria”� p < 1: binder test method underestimes TSRST « ageing sensitiveness »� p > 1: binder test method overstimes TSRST « ageing sensitiveness »� p = 1: binder test method suit TSRST « ageing sensitiveness »

How to asses durable materials for long-lastingpavement?

ABCD understimates (bitumen, physical blend PmB) TSRST ageingsenstiveness…

But catches real changes for X-PmB

S. Dreessen and al, « DURABILITY STUDY: FIELD AGING OF CONVENTIONAL AND POLYMER MODIFIED BINDERS Washington, TRB 2010

S. Dreesen and al, « Durability study: Field experience of long-term evolution of SBS polymer modified binder”, Istanbul, E&E2012

�Time and labour cost-effective� Reliable test methods with respect to ageing� Catch binder performance with respect to ageing

Figure 1: Field follow-up of cracking amplitude after 4, 7, 10… and 19 years

Laboratory ageing procedures and test methods investigation

Figure 3: binder pathway assessment

Results & Discussion

Ageing impact: Fraass trend ≠ TSRST (control)

N.D N.D

Conclusion & Prospect

m-value criterion, suit carefully and uniformely TSRST ageing sensitiveness

Fraass overestimates (X-PmB) or understimates(bitumen) TSRST ageing sensitiveness

S criterion, BBR understimates (but withuniformity) TSRST ageing sensitiveness

VS

Figure 2: Laboratory TSRST test method for asphalt mixture

Figure 3: binder pathway assessment

Figure 2 asphalt mixture pathway assessment

Figure 3: Laboratory test methods for bitiminousbinders, (a): BBR, (b) Fraass, (c) ABCD

(a) (b)

(c)VS

Ageing impact: BBR trend ≈ TSRST test method (control)

Ageing impact: ABCD trend ≠ TSRST (control)

� Improve reliability and accuracy of this assessment

� Enlarge investigation and database with extended binders to validate this method