transports québec laboratoire des chaussées type of … 8... · type of tires : impact on...
TRANSCRIPT
DLCDLC 1
Direction duDirection duLaboratoire des chausséesLaboratoire des chausséesQuébec
Transpor t s
Type of Tires :Type of Tires :Impact on PavementsImpact on PavementsRencontre Rencontre interprovincialeinterprovinciale - -
Charges et dimensions des véhiculesCharges et dimensions des véhicules3 Décembre 20033 Décembre 2003
Fritz Prophète, ing.
2
QuébecTranspor t s
ScopeScopeTesting ProgramTesting ProgramModel (Validation)Model (Validation)Failure criterionFailure criterionESAL for ESAL for different different tirestiresLoad limits Load limits : : RegulationRegulationConclusionsConclusionsFurtherFurther works recommandedworks recommanded
Presentation outlinePresentation outline
3
QuébecTranspor t s
ScopeScope
ProvideProvide technical technical informations informations concerningconcerningpavement pavement responseresponse withwith differentdifferent type of type oftires.tires.Propose an adaptation to the Propose an adaptation to the regulationregulationconcerning concerning axial axial loadingloading..
4
QuébecTranspor t s
Adapation to road network
ExperimentalProgramSERUL
2 testing périod• Spring: Mai 2002• Summer: July 2002
4 types of tires tested
Pavement response withdifferent load
Type of Tires : Impact on Pavements
Strutural pavement analysis
FWD testing• Spring: Mai 2002
• Summer: July 2002
Pavement response Modeling
Calculatedpavement response
Comparaison with experimental datas
Load limits
Report of experimental study
5
QuébecTranspor t s
100 mm Béton bitumineux
200 mm MG 20
450 mm Bois
480 mm MG 112
1370 mm Till silteux
270 mm Silt sableux
0
300 mm
780 mm
2150 mm
2600 mm
2870 mm
100 mm
300 m
600 m
900 m
1200 m
1500 m
1800 m
2100 m
2400 m
2700 m
Temperatureprobe
Pavement StructurePavement Structure
Silt (fine sand)
Granular Sub-Base
Granular Base
Bituminous layer
6
QuébecTranspor t s
MultiMulti--depth Deflectometerdepth Deflectometer
300 mm
800 mm
1100 mm
2500 mm#1
#2
#3
#4
7
QuébecTranspor t s
optical fibres
Vertical Vertical strain cellstrain cell
Chaus s e
BÉTON
PavementConcrete Epoxy/granular cell
Concrete base
11
QuébecTranspor t s
TemperatureTemperature distribution in distribution inpavement (pavement (springspring))
0
500
1000
1500
2000
2500
3000
0 2 4 6 8 10 12 14
Température (°C)
Prof
onde
ur (m
)
9 mai 2002 à 15h457 mai 2002 à 8h00
50
FROZEN LAYER Dep
th (m
)
12
QuébecTranspor t s
0
500
1000
1500
2000
2500
3000
0 5 10 15 20 25 30
Température (°C)
Prof
onde
ur (m
m)
8 juillet 9h35
10 juillet 8h00
12 juillet 9h15
12 juillet 16h30
15 juillet 9h00
16 juillet 13h45
50
TemperatureTemperature distribution in distribution inpavement (pavement (summersummer))
Dep
th (m
)
13
QuébecTranspor t s
Adapation to road network
ExperimentalProgramSERUL
2 testing périod• Spring: Mai 2002• Summer: July 2002
4 types of tires tested
Pavement response withdifferent load
Type of Tires : Impact on Pavements
Strutural pavement analysis
FWD testing• Spring: Mai 2002
• Summer: July 2002
Pavement response Modeling
Calculatedpavement response
Comparaison with experimental datas
Load limits
Report of experimental study
14
QuébecTranspor t s
FWD FWD deflectiondeflection
Plate
Loading system
Hydraulic system
Bargeophone
De f
lec t
ion
(µm
)
15
QuébecTranspor t s
R2 = 0,9861
1000
10000
0 10 20 30 40
Temperature (oC)
Mod
ulus
, E (M
Pa)
AsphaltAsphalt ModulusModulus ( (MPaMPa))vsvs
Temperature Temperature (°C)(°C)
16
QuébecTranspor t s
0
20
40
60
80
100
0 300 600 900 1200 1500 1800
distance (mm)
Mod
ule
de B
ouss
ines
q m
oyen
(MPa
)
0
100
200
300
400
500
0 300 600 900 1200 1500 1800
distance (mm)
Déf
lexi
on (µ
m)
PavementPavement response Modeling response Modeling
Printemps
0
20
40
60
80
100
0 300 600 900 1200 1500 1800
distance (mm)
Mod
ule
de B
ouss
ines
q m
oyen
(MPa
) SPRING
SUMMER
Bou
ssin
esq
Mod
ulus
(MPa
)
17
QuébecTranspor t s
BaseBaseSubSub base baseSubgrade
Issue : Calculated the tension strain (єt)
at the bottom ofthe bituminous layer
єt
LoadedLoaded pavement pavement responseresponse
22
QuébecTranspor t s
єt
Fondation etFondation etsous-fondationsous-fondationInfrastructure
LoadedLoaded pavement pavement responseresponse
Issue : Calculated the tension strain (єt)
at the bottom ofthe bituminous layer
24
QuébecTranspor t s
CalculedMesured
Comparaison ofComparaison ofcalculated deflection calculated deflection vsvs mesuredmesured
25
QuébecTranspor t s
FailureFailure criterioncriterion
FatigueFatigueNNtt = 10= 1066 ×× ( (εεtt / K) / K)-a-a ; K = 240 et a = 3.29 ; K = 240 et a = 3.29(Asphalte Institue)(Asphalte Institue)
26
QuébecTranspor t s
RuttingRutting in in subgradesubgrade or base or baseNNoo=1.077 =1.077 хх 10 101818 ( (εεvv))-4.483-4.483
(Chevron)(Chevron)
FailureFailure criterioncriterion
27
QuébecTranspor t s
FlowFlow ruttingruttinglog(log(εεpp / / εεrr ) = -3.74938 + 0.4262 log(N ) = -3.74938 + 0.4262 log(Noo) + 2.02755 log(T)) + 2.02755 log(T)(AASHTO 2002)(AASHTO 2002)
FailureFailure criterioncriterion
28
QuébecTranspor t s
ESALESAL
Ratio Ratio between between the pavement the pavement dammage dammage cause by acause by aspecific load and specific load and a a reference loadreference load..
ESALt =ESALt = Nr Nr / / Nt NtNormalizedNormalized ESAL ESAL withwith referencereference temperaturetemperature
ESALt = FCD × ECAStrESALt = FCD × ECAStr
29
QuébecTranspor t s
FatigueFatiguedammagedammagecorrectioncorrection
factorfactorFCDFCD
Summer
Spring
30
QuébecTranspor t s
ESALESAL(fatigue)(fatigue)
Summer
Spring
12R22.5
12R22.5
11R22.5
11R22.5
455/55R22.5
455/55R22.5
385/65R22.5
385/65R22.5 (ESA
L) (E
SAL)
LOAD (1/2 AXLE) kg
31
QuébecTranspor t s
ESALESAL((flow ruttingflow rutting))
Summer
(ESA
L)
mesured
12R22.5 11R22.5455/55R22.5 385/65R22.5
LOAD (1/2 AXLE) kg
32
QuébecTranspor t s
Combine Combine effecteffect of of twotwo types of types of failurefailureFatigue Fatigue andand flowflow ruttingrutting
SpringSpringSummerSummer
Fatigue Fatigue and and RuttingRutting in in subgrade subgrade or base or baseSpringSpringSummerSummer
Combine « ESAL »Combine « ESAL »
33
QuébecTranspor t s
Combine « ESAL »Combine « ESAL »((FatigueFatigue and flow rutting and flow rutting ))
11R22.5 = 1.40 ESAL12R22.5 = 1.5 ESAL385/65R22.5 = 2.30 ESAL455/55R22.5 = 2.20 ESAL
(ESA
L)
LOAD (1/2 AXLE) kg
FeFe = ESAL tire type X / ESAL 11R22.5
34
QuébecTranspor t s
SingleSingle10 000 kg10 000 kg
TandemTandem1.6 * 10 000 kg1.6 * 10 000 kg
TridemTridem2.13 * 10 000 kg2.13 * 10 000 kg
Load limitsLoad limits
35
QuébecTranspor t s
LoadLoad limitslimits((SummerSummer))
Exemple - Single axialExemple - Single axialPneu 11R22.5Pneu 11R22.5 PPlimitelimite = 10 000 kg ( = 10 000 kg (FeFe=1.00)=1.00)Pneu 12 R22.5Pneu 12 R22.5 PPlimitelimite = 10 000 kg ( = 10 000 kg (FeFe=1.00)=1.00)Pneu 385/65R22.5Pneu 385/65R22.5 PPlimitelimite= 8 400 kg (= 8 400 kg (FeFe=1.80)=1.80)Pneu 455/55R22.5Pneu 455/55R22.5 PPlimitelimite= 8 400 kg (= 8 400 kg (FeFe=1.80)=1.80)
36
QuébecTranspor t s
Exemple - Single axialExemple - Single axialPneu 11R22.5Pneu 11R22.5 PPlimitelimite = 8 000 kg ( = 8 000 kg (FeFe=1.00)=1.00)Pneu 12 R22.5Pneu 12 R22.5 PPlimitelimite = 8 000 kg ( = 8 000 kg (FeFe=1.00)=1.00)Pneu 385/65R22.5Pneu 385/65R22.5 PPlimitelimite= 6 700 kg (= 6 700 kg (FeFe=1.80)=1.80)Pneu 455/55R22.5Pneu 455/55R22.5 PPlimitelimite= 6 700 kg (= 6 700 kg (FeFe=1.80)=1.80)
LoadLoad limitslimits((SpringSpring))
37
QuébecTranspor t s
ConclusionConclusion
WithWith the the same load same load,, Wide Wide-base tire cause-base tire causemore pavementmore pavement dammage than dammage than a standard a standarddual tiresdual tiresFatigue of Fatigue of bituminousbituminous layer layer isis the the criticalcritical« « failurefailure criterioncriterion » »The The axle loadaxle load limitlimit must must bebe reducereduce by 16% by 16%for a for a widewide-base tire-base tire
38
QuébecTranspor t s
PerformPerform a road network a road network analysisanalysis;;EvaluationEvaluation of of FeFe factor factor for for differentsdifferentstypes of types of roadsroads..
Révision of the Révision of the load limits regulationload limits regulationaccordingaccording to the to the benefits benefits for the for thetransportationtransportation industry industry
FurtherFurther worksworks
39
QuébecTranspor t s
Further worksFurther works
CompleteComplete a data a data analysis from analysis from SERUL SERULexperimental studyexperimental study to to learn learn more about more aboutthe "tire-pavement" interface impactthe "tire-pavement" interface impact