LCPC accelerated pavement testing

LCPCLCPC--Nantes machines «Nantes machines «FABACFABAC » »

LCPCLCPC--NantesNantes carrousselcarroussel (Format (Format projectproject, New , New testingtesting))

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 22/19/19A. ChabotA. Chabot

Cracking in Pavement Cracking in Pavement 2 2 FabacFabac MachinesMachines --> > Asphalt andAsphalt and/or /or concrete concrete pavementspavements

Dimension length:9.80 m

width:2.50m

heigth:3.30m

Weight: 15 Tons

Power : 45 kw

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 33/19/19A. ChabotA. Chabot

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 44/19/19A. ChabotA. Chabot

Chaussée

Vérinpneuma-tique

Chassis fixe

Parallélogramme déformable support deséquipements mobiles

Moteurélectriquefixe

Barbotin

Chaîne d'entraînement

2 m longueur de chausséecirculée

4 trains de roulement (jumelages ou roues simples)montés sur les 2 chaînes

Loadingconditions :• standard twinned wheels 32,5

kN/wheel• or single wheel :42 kN/wheel,• speed : 3.6 km/h• no lateral wandering• length of road trafficked = 2 meters

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 55/19/19A. ChabotA. Chabot

Area for Score fest -maximum length 20 meter, width 3 meters

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 66/19/19A. ChabotA. Chabot

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 77/19/19A. ChabotA. Chabot

9,5 cm GB3

8 cm BC5

PF3

Sergio Pérez PhD Sergio Pérez PhD (2003(2003--2006)2006)

Pouteau Pouteau PhD PhD (2000(2000--2004)2004)

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 88/19/19A. ChabotA. Chabot

LCPCLCPC--Nantes Nantes carrousselcarroussel

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 99/19/19A. ChabotA. Chabot

Format Project: Full Full OptimisedOptimised Road MaintenanceRoad Maintenance

t Belgian Road Reearch Centre (BRRC) Bt Laboratorio Nacional de Engenharia Civil (LNEC) Pt COLAS SA Ft Autopistas Delmare Nostrum SA (AUMAR) Et United State Federal Highway Administration, Turner-Fairbank Highway Research Cebter (FHWA) US t Laboratoire Central des Ponts et Chaussées (LCPC) Ft Universitaet Karlsruhe (Unikarl-ISE) Dt Transport Research Laboraory (TRL) UKt Laboratory of Trafic Facilities , Federal Institute of Technology (LAVOC) CHt Road Directorate, Danish Road Institute (DRI) DKt Zavod za gradbenistvo Slovenije-Slovenian National Building Civil Engineering Institute (ZAG) SIt Technical Research Centre of Finland (VTT) FINt Swedish National Road and Transport Research Institute (VTI) St Institut fur Strassenbau Strassenerhaltung, Technical Univ Vienna (ISTU) ATt Asfalttiliittoo Ry (Finnish Asphalt Association) FINt Centro de Estudios y Experimentation de Obras Publicas (CEDEX) ESt Kozlekedestudomanyi Intezet Rt (KTI Rt) HU

17 PartnersCountry

start date:01-01-02 duration: 36 months Date of issue: 31-12-04

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 1010/19/19A. ChabotA. Chabot

Format Project WP3 – experiment with Lcpc’s ALTGeneral lay-out

3 test sites. The 3rd one is isolated from external water table and equiped with a pumping station

Ring C used for FORMAT experience(sept.–dec. 2003)

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 1111/19/19A. ChabotA. Chabot

3 m

10,41 m

Adjustable watertable by pumping

External radius 23 m

Internal radius 12.4 m

Format Project WP3 – experiment with Lcpc’s ALT : water table control system of ring C

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 1212/19/19A. ChabotA. Chabot

Sector122.50m

Sector222.50m

Sector322.50m

Sector422.50m

Sector530m

5 cm 5 cm 8 cm 8 cm 6 cm20 cm 20cm 20cm 20cm

15cm20cm 30cm

20cm

8 cm

Format Project WP3 – experiment with Lcpc’s ALTRD stage 1 before application of maintenance treatment

BC bituminous concrete BiC binder course

UGA untreated graded aggregates Soil(65 to 100 Mpa according water level)

Theoretical live duration (millions loading)0.18 0.30 0.75 1.25 1.50

(reference)

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 1313/19/19A. ChabotA. Chabot

Format Project WP3 Format Project WP3 –– experiment with Lcpcexperiment with Lcpc’’ss ALTALTTime Time scheduleschedule

4 flexible structure + 1 bituminous reference structure.Low bearing capacity (high water table level)

2 overlay techniques over the the bituminous reference structure n°5.High bearing capacity (low water table level)

4 flexible structures + 1 bituminous reference structure n°5.High bearing capacity (low water table level)

1.5x106

standard loadsMay 2003 to Sept. 2003

Road Directorate experiment stage1

1.0x106

standard loadsOctober 2003 to Dec. 2003

FORMATexperiment

1.5x106

standard loadsJanuary 2004 to May 2004

RoadDirectorate experiment stage2

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 1414/19/19A. ChabotA. Chabot

Format Project WP3 – experiment with Lcpc’s ALTmaintenance treatment tested on sector 5

10m 10m

Conventional bituminous overlay

4 cm thick

Very thin bituminous overlay 2.5 cm

incorporating geogrid

Suggested alternative (?)

Very thin bituminous overlay

without geogrid

10m

15m 15m

Conventional bituminous overlay 4 cm thick

Very thin bituminous overlay 2.5 cm thick incorporating geogrid

Cracked bituminous layer (1.5x106 standard loads)

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 1515/19/19A. ChabotA. Chabot

Format Project WP3 – experiment with Lcpc’s ALTInnovative maintenane treatment VTAC + Geogrid

Geogrid CIDEX 50/20 manufacturedby « 6D solution » France

Glas fiber grid 40mm x 30mm 283g/m2

non woven polyester fibre 17g/m2

CIDEX 50/20 :

Ultimate strength : 50 kN/ m

Ultimate strain : less than 4%

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 1616/19/19A. ChabotA. Chabot

Application of Geogrid over the bituminous tack-coat, before the bituminous overlay placing

Format Project WP3 – experiment with Lcpc’s ALTInnovative maintenane treatment VTAC + Geogrid

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 1717/19/19A. ChabotA. Chabot

1- Before the maintenance roadwork :- Cartograhy of crackings (pictures)- Evaluation of severity of cracking (cores)- Evaluation of structural capacity of pavement (benkelman and fwd)

2- During the maintenance roadwork :- Laboratory tests on formulation- Pictures …

3- After the overlays application:- Evaluation of structural capacity of pavement with overlays (benkelman and fwd)

4- During the test :evolution of : - Cartography of cracking (pictures)- Rutting- Roughness, Sand patch, Penduleum (skid resistance) - Drainability - Temperatures and raining- Ravelling, noise (?)

5- After the test:- Cores on cracks , trenches

Format Project WP3 – experiment with Lcpc’s ALTStructure survey

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 1818/19/19A. ChabotA. Chabot

ResultsResults

2005 Report2005 Report

RILEM TCRILEM TC--CAPCAP-- TG1TG1–– 9 9 JanuaryJanuary 2005, TRB, Washington DC 2005, TRB, Washington DC 1919/19/19A. ChabotA. Chabot

ForFor the Rilemthe Rilem TCTC--CAP, CAP, it can be usedit can be used::

--FabacFabac data (data (availableavailable in 2005) in 2005)

-- CarrousselCarroussel Format Format project project data in (data in (availableavailable

in a 2005 report)in a 2005 report)

--> New > New projectproject for 2006 : carrousel for 2006 : carrousel experience experience

withwith 182182-- PEB PEB Rilem bituminous material Rilem bituminous material (0(0--6)6)

ConclusionsConclusions