Post on 25-Mar-2018
transcript
THE CONCEPT OF PERPETUAL
ASPHALT PAVEMENTS The Next Level in The Theory of Evolution of
Flexible Pavements
Aleksander ZBOROWSKI, Karolina PEŁCZYŃSKA,
Agata GRAJEWSKA, Igor RUTTMAR
28. – 29. listopadu 2017, České Budějovice
Motto: Asfaltové vozovky – bezpečná cesta k prosperitě
ARE YOU READY TO HEAR THE TRUTH?
ALL WE THOUGHT
ABOUT MAKING A ROAD
PAVEMENT WAS WRONG
WE HAVE TO EVOLVE
OUR THINKING
WE NEED TO FORGET
WHAT WE KNEW
NOW
DISCLAIMER Contrary to media reports, authors did not invent the perpetual
pavements
REINVENTING THE WHEEL?
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DEVELOPMENT OF THE FIRST ROAD STRUCTURE
TECHNOLOGIES
Modern roads
XX A.D. IV-II B.C.
Roman roads MacAdam
XVIII-XIX A.D.
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EVOLUTION OF MODERN ROADS
Nf = 15M 115kN ESAL Nf = 16,5M 115kN ESAL Nf = 54M 115kN ESAL
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PAVEMENT WITH THICK AND STIFF ASPHALT BASE LAYER
IS THIS REALLY THE BEST SOLUTION?
Source: Internet
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HOW DOES THE FLEXIBLE ASPHALT PAVEMENT WORK?
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HOW TO MAKE ROADS MORE DURABLE? FATIGUE FAILURE CRITERION, MEPDG (NCHRP 1-37A)
VMA
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TWO WAYS TO OBTAIN LONG-LIFE ASPHALT PAVEMENT
e1
Increase of the asphalt layers thicknnes
e2
Str
ain
ε (
log
)
Fatigue life N (log)
e1
e2
e1 e2
Higher quality materials in the asphalt base
e1
Str
ain
ε (
log
)
Fatigue life N (log)
e2
„endurance limit”
„endurance limit”
TRADITIONAL ASPHALT PAVEMENT CRITICAL STRAIN AT BOTTOM – FATIGUE FAILURE
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HEAVY VEHICLE SIMULATOR HVS IN POLAND 2008 R.
A
B
C D
A
B
C D
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SPENS PROGRAM, 2008
SMA 8
EME 16
20/30
SMA 8
AC 16 W
35/50
Composite
Pavement
AC 16 W
35/50
SMA 8
AC WMS 16
20/30
AC AF +
additives
0
10
20
30
40
50
D A C B
Fa
tig
ue d
am
ag
e [%
]
0
10
20
30
40
50
D A C B
Fa
tig
ue
da
ma
ge [%
]
EME Type Standard
Pavement
Composite
Pavement Perpetual
Pavement
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FIRST TRIAL OF PERPETUAL PAVEMENT, PRUSZKÓW 2013
Pruszków, woj. Mazowieckie, 2013r.
BBTM 8A
EME 16
PMB 25/55-60
AC 5 AF
rubber modified
Perpetual Pavement
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FATIGUE RESISTANCE 4PB-PR METHOD (10 °C, 10 HZ)
100
1000
100000 1000000 10000000
Str
ain
[m
m/m
]
Number of cycles
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0
2 000
4 000
6 000
8 000
10 000
12 000
14 000
16 000
18 000
0 500000 1000000 1500000 2000000 2500000
Stiffn
ess 4
PB
-PR
, M
Pa
Number of cycles
AC WMS PMB 25/55-60 AC WMS PMB 25/55-60 WM AC WMS PMB POLYGUM 45/80-70
FATIGUE RESISTANCE 4PB-PR METHOD (10 °C, 10 HZ)
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FIRST PERPETUAL PAVEMENT WITH ANTI-FATIGUE LAYER,
2013 - 2015
Client:
Contractor:
Engineer:
WARSAW
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FIRST PERPETUAL ASPHALT PAVEMENT IN POLAND
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TRIAL SECTION OF ANTI-FATIGUE LAYER, 2014
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FIRST PERPETUAL ASPHALT PAVEMENT IN POLAND
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Wearing course SMA 8 Rubber Asphalt Binder, 3cm
Binder course AC WMS 16 PMB 25/55-60, 17 cm
Subgrade
Anti-fatigue course AC AF 16 PMB 45/80-80, 6cm
Mechanically stabilized granular base course, 20cm
Antifrost / drainage layer, 37 cm
E2 180 MPa - 26 cm
E2 50 MPa
E2 120 MPa
CROSS SECTION OF ASPHALT PAVEMENT FOR SECTION
“TRASA NOWOHUCKA”, 2017
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Wearing course SMA 8 Rubber Asphalt Binder, 3cm
Binder course AC WMS 16 PMB 25/55-60, 12 cm
Subgrade
Anti-fatigue course AC AF 16 PMB 45/80-80, 7cm
CTB C3/4, 22cm
Mechanically stabilized granular base course, 15cm
Drainage layer, 15cm
E2 180 MPa - 22 cm
E2 120 MPa
CROSS SECTION OF ASPHALT PAVEMENT FOR
USTRONIE MORSKIE – KOSZALIN
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EVOLUTION TOWARDS THE FUTURE
Aleksander ZBOROWSKI
Karolina PEŁCZYŃSKA
aleksander.zborowski@tpaqi.com
karolina.pelczynska@tpaqi.com