Christian-Doppler-Laboratory for Performance-based Optimization of Flexible Pavements, Vienna University of Technology, Austria 4PBT WORKSHOP

Transcription

1 Christian-Doppler-Laboratory for Performance-based Optimization of Flexible Pavements, Vienna University of Technology, Austria 4PBT WORKSHOP Repeatability and comparability of stiffness and fatigue testing procedures according to EN and EN Elisabeth Hauser Delft March 2007; Elisabeth HAUSER 1

2 OUTLINE TYPES OF TESTS Christian-Doppler-Laboratory Vienna University of Technology stiffness tests - 4PB-PR - DTC-PR Cooperating laboratories LAVOC, Switzerland and IBDIM, Poland stiffness tests - 4PB-PR IBDIM - IT-CY - 2PB-TR LACOV fatigue tests - 4PB-PR fatigue tests - 4PB-PR IBDIM Delft March 2007; Elisabeth HAUSER 2

3 TESTED ASPHALT MIXTURE BT 22HS LK S PmB 45/80-65 (RVS) or AC 22 binder PmB 45/80-65, F3, G4 (ÖNROM) stone: Hollitzer EBK (limestone) bitumen: 4,5 M-% (PmB) filler: Limestone void content: ~ 4 V-% grading curve acc. to RVS grading curve acc. to ÖNORM B passing [m-%] passing [m-%] grain size [mm] grain size [mm] Delft March 2007; Elisabeth HAUSER 3

4 MANUFACTURING OF THE ASPHALT MIXTURE Opposite rotation pug mill Segment roller compactor Delft March 2007; Elisabeth HAUSER 4

5 TESTING CONDITIONS 4PB-PR (CDL) DTC-PR (CDL) IT-CY (CDL) 2PB-TR (LAVOC) 4PB-PR (IBDIM) stiffness tests Temp. [ C] -10; 0; +10; ; 0; +10; ; +10; ; 0; +10; ; 0; +10; +20 frequencies [Hz] 0,1; 1; 2; 5; 8; 10; 15; 20; 30; 40 0,1; 1; 2; 5; 10; 15; 20; 30; μs ( 8 Hz) 0,1; 1; 2; 5; 8; 10; 15; 20; 30; 40 0,1; 1; 2; 5; 8; 10; 15; 20; 30; 40 nr. of tests specimen dimensions [mm] L = 500 B = 60 H = 60 L = 220 B = 60 H = 60 D = 100 H = 60 L = 250 B = 70 e = 25 b = 25 L = 380 B = 63 H = 50 fatigue tests temp. [ C] +10, , +20 frequency [Hz] 10 or or 30 amplitudes [μm/m] 220; 260; ; 260; 310 Delft March 2007; Elisabeth HAUSER 5

6 COLE-COLE DIAGRAM 4PB-PR (EN ) imaginary part E 2 [MPa] AC BT22HS-50/90S binder PmB 45/ real part E 1 [MPa] Delft March 2007; Elisabeth HAUSER 6

7 REPEATABILITY 4PB-PR (EN ) standard deviation [%] standard deviation [%] Standardabweichung [%] Standardabweichun g [%] PBB bei -10 C PBB bei +10 C Standardabweichung standard deviation [%] [%] standard deviation [%] Standardabweichun g [%] PBB bei 0 C PBB bei +20 C Delft March 2007; Elisabeth HAUSER 7

8 COLE-COLE DIAGRAM DTC-PR (EN ) imaginary part E 2 [MPa] AC 22 binder PmB 45/80-65 BT22HS-50/90S-H real part E 1 [MPa] Delft March 2007; Elisabeth HAUSER 8

9 REPEATABILITY DTC-PR (EN ) standard Standardabweichung deviation [%] standard Standardabweichung deviation [%] DTC-PR bei -10 C frequency [Hz] DTC-PR bei +10 C standard deviation [%] Standardabweichung [%] standard Standardabweichung deviation [%] DTC-PR bei 0 C DTC-PR bei +20 C frequency Frequenz [Hz] frequency [Hz] Delft March 2007; Elisabeth HAUSER frequency [Hz]

10 COLE-COLE imaginary part E 2 [MPa] AC BT22HS-50/90S-H binder PmB 45/80-65 (CDL-DTC-PR) (CDL-DT-PR) AC BT22HS-50/90S-H binder PmB 45/80-65 (CDL-4PB-PR) (4PB-PR) AC BT22HS-50/90S-H binder PmB 45/80-65 (L1-2PB-TR) (LAVOC-2PB-TR) AC BT22HS-50/90S-H binder PmB 45/80-65 (L2-4PB-PR) (IBDIM-DT-PR) real part E 1 [MPa] Delft March 2007; Elisabeth HAUSER 10

11 phi ϕ [ ] BLACK-DIAGRAM AC 22 BT22HS-50/90S-H binder PmB 45/80-65 (CDL-DTC-PR) (CDL-DT-PR) AC 22 BT22HS-50/90S-H binder PmB 45/80-65 (CDL-4PB-PR) (4PB-PR) AC 22 BT22HS-50/90S-H binder PmB 45/80-65 (L1-2PB-TR) (LAVOC-2PB-TR) AC 22 BT22HS-50/90S-H binder PmB 45/80-65 (L2-4PB-PR) (IBDIM-DT-PR) Stiffness modulus [MPa] Delft March 2007; Elisabeth HAUSER 11

12 MASTER CURVE Stiffness modulus [MPa] AC 22 BT22HS-50/90S-H binder PmB 45/80-65 (CDL-DTC-PR) (CDL-DT-PR) AC 22 BT22HS-50/90S-H binder PmB 45/80-65 (CDL-4PB-PR) (4PB-PR) AC 22 BT22HS-50/90S-H binder PmB 45/80-65 (L1-2PB-TR) (LAVOC-2PB-TR) AC 22 BT22HS-50/90S-H binder PmB 45/80-65 (L2-4PB-PR) (IBDIM-DT-PR) log α T f Delft March 2007; Elisabeth HAUSER 12

13 MASTER CURVE - SIGMOIDAL Stiffness modulus [MPa] BT22HS-50/90S-H AC binder PmB 45/80-65 (CDL-DTC-PR) (CDL-DT-PR) BT22HS-50/90S-H AC binder PmB 45/80-65 (CDL-4PB-PR) (4PB-PR) BT22HS-50/90S-H AC binder PmB 45/80-65 (L1-2PR-TR) (LAVOC-2PB-TR) BT22HS-50/90S-H AC binder PmB 45/80-65 (L2-4PB-PR) (IBDIM-DT-PR) log α T f Delft March 2007; Elisabeth HAUSER 13

14 4 Steifigkeitsversuche bei -10 C COMPARISON STIFFNESS TESTS 4 Steifigkeitsversuche bei 0 T = -10 T = 0 C standard Standardabweichung deviation [%] standard Standardabweichung deviation [%] standard Standardabweichung deviation [%] frequency [Hz] Steifigkeitsversuche bei +10 C standard Standardabweichung deviation [%] frequency [Hz] Steifigkeitsversuche bei +20 T = +10 T = +20 C frequency [Hz] frequency [Hz] Delft March 2007; Elisabeth HAUSER 14

15 MATERIAL SPEZIFICATION (EN ) mean value [MPa] stand. dev. [%] S min [EN ] DTY-PR (CDL) ,5 S min PB-PR (CDL) ,1 S min 3600 IT-CY (CDL) ,7 S min PB-TR (LAVOC) S min PB-PR (IBDIM) ,4 S min 3600 Delft March 2007; Elisabeth HAUSER 15

16 COMPARISON FATIGUE TESTS EN y = Ln(x) R 2 = ε 100 [μm/m] 100 y = Ln(x) R 2 = L2-4PBB (EN ) 10 CDL - 4PBB (EN ) 1.0E E E E+07 N zul [-] Delft March 2007; Elisabeth HAUSER 16

17 CONCLUSIONS results from stiffness test are comparable standard deviation < 15% 4 point bending beam equipment of CDL and IBDIM provide similar fatigue results Differences in resulting stiffness figures will influence rheological material modeling and derived model parameters Differences in resulting stiffness figures will affect CE certification testing technique and conditions to be declared Delft March 2007; Elisabeth HAUSER 17