CERTAIN workshop Kapitanivka CDV - Transport Research Centre (Czech Republic) Division of Infrastructure and Environment Dr. Josef Stryk Ass. Prof. Karel Pospisil Non-destructive testing of pavement conditions

CERTAIN workshop Kapitanivka Content Introduction NDT technique in NMS Harmonisation measurements bearing capacity longitudinal evenness skid resistance Other projects New developments Conclusions

CERTAIN workshop Kapitanivka Introduction Project SPENS: Sustainable Pavements for European New Member States WP2: Road assessment and monitoring (KTI, Hungary, L. Gaspar) Task 2.2: Non-destructive testing of pavement condition (Arsenal research, Austria, R. Spielhofer) Deliverable 11: Guidelines of a complex methodology for non-destructive pavement measuring techniques harmonization test in Vienna

CERTAIN workshop Kapitanivka NDT technique in NMS surface assessment /riding comfort, safety: evenness (IRI, rut depth, cross profile) skid resistance (SRI, LFC, SFC) macrotexture (MPD) surface defects (%, index) structure assessment: bearing capacity (deflection, SCI, residual life) cracking (%, index) environmental assessment (SPENS WP5): noise (SPB, CPX method) air pollution (concentration of PM)

CERTAIN workshop Kapitanivka Harmonisation measurements Vienna - May 5th to May 8th 2008: bearing capacity - 7 FWDs (deflection) according to Protocol C of COST 336 “ In situ FWD Harmonisation Procedure ” no need of reference device longitudinal evenness - 6 devices (IRI) according to the FILTER harmonisation test reference device VTI Primal skid resistance - 9 devices (SRI) – 8x LFC, 1x SFC According to draft EN13036-X “Surface Characteristics of road and airfield pavements; Test Method – Part X; Assessment of the skid resistance of a road pavement surface by the use of dynamic measurement systems” no reference device, using the grand average of all devices

CERTAIN workshop Kapitanivka FWD KUAB FWD Dynatest FWD Carl Bro bearing capacity CompanyDevice NameCountry TU Vienna, Institute for Road Construction and Maintenance FWD DynatestAustria IMOS BrnoFWD Carl BroCzech Republic TPA HungaryFWD DynatestHungary Hungarian Roads Management Company FWD KUABHungary IBDiMFWD DynatestPoland DDCFWD DynatestSIovenia Slovak Road AdministrationFWD KUABSlovakia

CERTAIN workshop Kapitanivka bearing capacity - reproducibility and short time repeatability - 5 test stations with asphalt / cement concrete pavement - reference deflection bowls - calculated according to Protocol C of COST analysis by CDV

CERTAIN workshop Kapitanivka differences between the two types of FWD: KUAB and Dynatest. KUAB FWDs tend to produce higher values of stiffness on asphalt pavements. For the central deflections, the differences go up to 10 %. bearing capacity

CERTAIN workshop Kapitanivka longitudinal evenness CompanyDevice NameCountry Arsenal researchRoadSTARAustria Mereni PVVTRT deviceCzech Republic Colas Hungaria Ltd.RST Portable SystemHungary RamböllRST RST22Sweeden ZAGZAG VPSlovenia Slovak Road Administration Profilograph GESlovakia

CERTAIN workshop Kapitanivka VTI Primal longitudinal evenness - 6 surfaces with IRI values ranging from ~1.0 mm/m (very good) up to 10 mm/m (very poor) - speed 30, 60, (90) km/h - good correspondence for the wavelength interval 0,5 - 5 m but poorer correspondence at higher wavelengths - analysis by VTI

CERTAIN workshop Kapitanivka skid resistance CompanyDevice NameCountry Arsenal researchRoadSTARAustria TU Vienna, Institute for Road Constr. and Maintenance GripTester Austria Mereni PVVTRT deviceCzech Republic CONSULTEST s.r.o.GripTesterCzech Republic Colas Hungaria Ltd.ASFT friction testerHungary Pon Equipement ASTWONorway IBDiMSRT-3Poland ZAGSCRIMTEXSIovenia Slovak Road Adm.Skiddometer BV 11Slovakia

CERTAIN workshop Kapitanivka skid resistance - 4 devices measured in the right wheel track, 2 in the left and 3 in the middle - 6 surfaces with skid resistance ranging from very low to very high - speeds 30, 60 and 90 km/h at least 3times at each speed - SRI values (speed independent friction index) - repeatability and reproducibility according to ISO analysis by KTI

CERTAIN workshop Kapitanivka Other projects skid resistance: PIARC experiment, 1992 (IFI) PIARC HERMES project, 2006 (EFI) FEHRL bearing capacity: COST 336: Falling weight deflectometer, 1999 (FWDs) FEHRL longitudinal evenness: EVEN project, 1998 (IRI) PIARC FILTER project, 2002 (IRI) FEHRL road indicators: COST 354: Performance indicators for road pavements, 2008 FEHRL

CERTAIN workshop Kapitanivka New developments Traffic speed deflectograph (Greenwood Engineering A/S & DRI TRL)

CERTAIN workshop Kapitanivka Conclusions Non-destructive testing of pavement conditions is very important for optimal planning of maintenance and repair of pavements Ii is basic element of PMS The regular realization of harmonization tests improve effectiveness of applications of these NDT methods FEHRL initiates harmonization tests in Europe

CERTAIN workshop Kapitanivka Thank you for your attention. CDV - Transport Research Centre (Czech Republic) Division of Infrastructure and Environment Dr. Josef Stryk Ass. Prof. Karel Pospisil