concrete pavement in germany construction, surface texture ... · 4.interlayers, base course and...
TRANSCRIPT
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Concrete Pavement in Germany Concrete Pavement in Germany ––Construction, Surface Texture, Construction, Surface Texture,
Interlayer, Drainage and Base Course Interlayer, Drainage and Base Course
by Stefan Hby Stefan Hööller ller
Federal Highway Research InstituteFederal Highway Research Institute(BASt / Germany)(BASt / Germany)
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1.Introduction
2. Concrete Pavement Construction
3. Concrete Pavement Surface Texture
4.Interlayers, Base Course and Drainage
5.Outlook
Content
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1.Introduction
2. Concrete Pavement Construction
3. Concrete Pavement Surface Texture
4.Interlayers, Base Course and Drainage
5.Outlook
Content
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Road Network and Traffic in GermanyM
otor
way
Net
wor
k [k
m]
Time 1950 - > 2010
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Ice Days [Days max. 0°C/Year]
Precipitation [mm/m²/Year]
Summer Days [Days min. + 25°C/Year
Climate in Germany
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Why Concrete Pavement?
and
- National Raw Material
- Light Surface (Traffic Safety)
- High Durability
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1.Introduction
2. Concrete Pavement Construction
3. Concrete Pavement Surface Texture
4.Interlayers, Base Course and Drainage
5.Outlook
Content
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Jointed Plain Concrete Pavement, (unreinforced slabs) JPCP
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Concrete Mixing Plant
Important:
- Continuous Delivery of Cement and Aggregates
- Adequate Mixing Capacity
- Adequate Transport Capacity
- Short Distance to Construction Site
- Experienced Operators
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Concrete Pavement -- Mix Design -
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Examples of Slip Form Paver
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Concrete Compaction by Poker Vibrator
Longitudinal
Concentration of Cement Paste and Fines=> Cracks?
Transversal
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Construction Site
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Concrete – Aluminium - Reaction
Fresh Concrete in Touch with Aluminium
=> Gas Decompression
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Transport of Aggregates and Concrete to the Construction Site
Aluminium: NoSteel: Yes
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Variable Lane Width
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Transportation of Slip Form Paver
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„Manual Paving“ for smaller Sites
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Positive:- Position of Dowels and Tie Bars fixed by wooden inlays
- no influence of Compaction Energy on Position of Dowels and Tie Bars
Negative:-Delievery of fresh Concrete limited
- Man Power intensive
Dowels and Tie Bars- Expansion Joints -
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- Contraction Joints / Baskets -Dowels and Tie Bars
Positive:- Position of Dowels and Tie Bars fixed by Baskets
- no influence of Compaction Energy onPosition of Dowels and Tie Bars
Negative:-Delievery of fresh Concrete limited
- Man Power intensive
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Positive:- Less Man Power
-Delievery of fresh Concrete not limited
Negative:-influence of Compaction Energy on Position of Dowels and Tie Bars
- Contraction Joints / Installation by Vibration Devices -Dowels and Tie Bars
Position always correct?
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- Dowel Dimension 25mm x 500mm
-Smooth Round Steel
- Plastic Coating 0,3 mm
-Tolerances:
Horizontal Shift : +/- 50 mm
Inclined Position: < 20 mm
Vertical Shift: +/- 20 mm
- Requirements -Dowels and Tie Bars
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Damages appear quickly
- Position extremly wrong -Dowels and Tie Bars
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Core Samples
Type of Measurement: destructive
effort: high
Quality of Result: high
- Measurement of Position -Dowels and Tie Bars
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Output of the Results
Measuring Device
Puls Induction Measurement
Type of Measurement: non destructive
effort: low
Quality of Result: medium
- Measurement of Position -Dowels and Tie Bars
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Joint Sealent
Acrylic-based mortarConcrete Pavement
Acrylic-based mortar
Plastic-covered Dowel
Hull
Cut A ‐A
- Retrofit of Dowels -Dowels and Tie Bars
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- Retrofit of Tie Bars -Dowels and Tie Bars
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- Saw Cutting -Joints (longitudinal and transversal)
after 4 – 12 hours
Bevel Cutting
complete Transversal Joint
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- Saw Cutting -Joints (longitudinal and transversal)
The right time?
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- Hot Bitumen Joint Sealing -Joints (longitudinal and transversal)
Construction Winter Summer
Primer Application
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- Plastic Profile Joint Sealing -Joints (longitudinal and transversal)
Installation at any Weather Condition
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„Package Cracking“ in the Early StageJoint 1 Joint 2 Joint 5Joint 4Joint 3 Joint 6
- Plastic Profile Joint Sealing -Joints (longitudinal and transversal)
Choose the right size!
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- Sealing of Expansion and Butt Joints -Joints (longitudinal and transversal)
Expansion Joint
Butt JointWooden Inlay
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Concrete Pavement
End Areas, to avoid horizontal Movements
Reinforced End Anchoir
Unreinforced „Double Concrete Slab“
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1.Introduction
2. Concrete Pavement Construction
3. Concrete Pavement Surface Texture
4.Interlayers, Base Course and Drainage
5.Outlook
Content
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Concrete Pavement
Surface Texture (1938)
1 cm
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Traffic in Germany / Europe
Traffic Volume 1960Traffic Volume 2010
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Traffic in Germany / Europe
„Average“ Car in 1950 „Average“ Car in 2010
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1 cm
Concrete Pavement
Surface Textures (1972)
-Soft Brush - transversal –
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Concrete Pavement
Surface Textures for (1978)
- Steel Brush - transversal -
1 cm
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Concrete Pavement
Surface Textures (1978)
- Hard Plastic Brush - longitudinal -
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Concrete Pavement
Surface Textures (1991)
- Slipform Paver + Super Smoother -
+ Burlap - longitudinal
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Concrete Pavement
Surface Textures- Analysis of the Tyre – Road - Noise -
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Microtexture Macrotexture Megatexture< 0,001 mm 0,5 mm 50 mm 500 mm
high-frequency low frequency
Adhesion
Noise
Negative: polished aggregates
Positive:Fine Structure and high skid resistance
Noise
Amplitude
Positive: roughness 0,4 - 0,8mm,kubic and sharp edge aggregates
Noise
Amplitude
Negative: uneven Surface
Positive: optimisation of construction
10 mm
Concrete Pavement
Surface Textures- Analysis of the Tyre – Road - Noise -
Wavelength
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Medium Macrotexture (Gaps) For Water Evacuation and Air Ventilation
Fine Microstructure No Mechanical Stimulation of the Tyre
2. Bewertung der Oberflächentextur
Concrete Pavement
Surface Textures- The Ideal -
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Concrete Pavement
Surface Textures for (2000)
-Different Textures in Combinations, -e.g.: Hard Plastic Brush + Tining - longitudinal -
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Concrete Pavement
Surface Textures 2002- Artificiale Turf -
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Skid Resistance Tester (SRT) Outflow Meter
Concrete Pavement
Surface Textures- Grip and Texture Measurement -
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Measurement of Skid Resistance
Sideway Force Measurement
-high-speed measuring system
- skewed test wheel (20°) linear
-continuous data recording
Typical measuring set-up
Concrete Pavement
Surface Textures- Grip and Texture Measurement -
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Sand Patch Method
Volume of Gaps
Concrete Pavement
Surface Textures- Grip and Texture Measurement -
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Microtextur0,5 mm 50 mm 500 mm
Macrotexture Megatexture
Optical Texture Analysis
Streiflicht -GroßesMessfeld
LaserProfilometer
0,001 mm
Laser Measurement Vehicle
Concrete Pavement
Surface Textures- Grip and Texture Measurement -
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+
Concrete Pavement
Surface Textures- Grip Requirements -
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Statistical Pass By (SPB), Currently only Indiviual Cars no Trucks
-
Concrete Pavement
Surface Textures- Noise Measurement -
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CPX Trailer Measurement, Currently only for Research
Concrete Pavement
Surface Textures- Noise Measurement -
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Concrete Pavement
Surface Textures- Noise Requirements -
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Cement PasteCement Paste and Sand
Cement Paste, Sand and Aggregates
Concrete Pavement
Surface Textures- Three Stages -
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Application of Retarder
Cover with Plastic Sheet
Concrete Pavement
Surface Textures- Exposed Aggregate -
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Application of Retarder and Curing Compound in Combination
Concrete Pavement
Surface Textures- Exposed Aggregate -
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Saw Cutting the Joints
Brushing the Mortar with Water / without Water
Concrete Pavement
Surface Textures- Exposed Aggregate -
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22 Peaks (25 cm²)Noise Level (SPB) 84,7 dB(A)inhomogen, noisy
52 Peaks (25cm²)Noise Level (SPB) 82,4 dB(A)homogen, silent
Concrete Pavement
Surface Textures- Exposed Aggregate -
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„Manual
for
Concrete Pavement
Surfaces Textures“
Version 2009
by FGSV, Köln
Concrete Pavement
Surface Textures
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1.Introduction
2. Concrete Pavement Construction
3. Concrete Pavement Surface Texture
4.Interlayers, Base Course and Drainage
5.Outlook
Content
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Concrete Pavement
Interlayer , Base Courses and Drainage
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Concrete Pavement on
Hydraulically Bound Base Course / Cement Treated Base Course
With
An Interlayer of Non-Woven Geotextile
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A2 bei Brandenburg
Before: Concrete Pavement directly on on hydraulically bond base course / cement treated base, Problems at the interface::
Finally: Erosion and Loss of Structural surpport
In the Beginning: Separation and Waterpumping
Concrete Pavement on
Hydraulically Bound Base Course / Cement Treated Base with an Interlayer of Non-Woven Geotextile
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Concrete Pavement on
Hydraulically Bound Base Course / Cement Treated Base Course
With
An Interlayer of Non-Woven Geotextile- History -
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Concrete Pavement
Nonwoven Geotextile
Hydraulically Bound Base Course /
Cement Treated Base
1. Separation
2. Elastic Bedding
3. Drainage
Concrete Pavement on
Hydraulically Bound Base Course / Cement Treated Base with an Interlayer of Non-Woven Geotextile
- 3 Functions of the Nonwoven Geotextile Interlayer -
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Cement Treated Base Course, mixed in place
Hydraulically Bound Base Course, mixed in plant
Concrete Pavement on
Hydraulically Bound Base Course / Cement Treated Base with an Interlayer of Non-Woven Geotextile
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Concrete Pavement on
Hydraulically Bound Base Course /
Cement Treated Base Course
- Requirements -
Grading Curve: only Hydraulically Bound Base Course
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Semi-mechanical Installation of Non-woven GeotextileConcrete Pavement Surface on
Non-woven Geotextile Interlayer
Turning Points Outside the installed Non-woven Geotextile
Installation of Non-Woven Geotextile
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by washers D=50mm
and nails
Fixing
Fixing of Non-Woven Geotextile
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Non-Woven Geotextile manufactured
with multicolor fibers:Completely
Alkali Resistant?
Additives During manufacturing:
100% Polyolefine?
- Production of Non-Woven Geotextile -
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for the Non-Woven Geotextile Product for the Installation of the Interlayer
- Requirements for Non-Woven Geotextile -
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Test Section 1: Route D in Kansas City, Missouri (2008) -Overlay technique –
(Overlay of a damaged concrete pavement with a concrete overlay)
Before: Asphalt interlayer Now: Geotextile interlayer
Trial applications in the USA
Concrete overlay
Asphalt interlayer
Existing concrete
Base
Concrete overlay
Geotextile Intrlyr.
Existing concrete
Base
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Test section 2: Interstate 40 in Warner, Oklahoma (2008)
-New construction (on cement-treated base) –
Concrete placement
Trial applications in the USA
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Adhesion to the Concrete Pavement
and the Base Course
Possibilities of using RC-Aggregates
Concrete Pavement
on hydraulically bond base course / cement treated basewith
an interlayer of Non-Woven Geotextile- Recycling -
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Concrete Pavement with
Crushed Gravel Base Course
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the idea the reality
Concrete Pavement on
Crushed Gravel Base Course - Research on the drainage behavior -
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Concrete Pavement on
Crushed Gravel Base Course - Research on the Drainage Behaviour -
„Double-Ring“ Infiltration
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Concrete Pavement on
Crushed Gravel Base Course
- Requirements -
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Concrete Pavement on
Crushed Gravel Base Course- Construction Site -
Grader Finisher
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Concrete Pavement on
Crushed Gravel Base Course- Traffic on Construction Site -
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Concrete Pavement on
Crushed Gravel Base Course- Recycling -
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Concrete Pavement on
Asphalt Base Course
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Concrete Pavement on
Asphalt Base Course-Construction Site –
Finisher Roller Compaction
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Concrete Pavement on
Asphalt Base Course-Requirements –
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1.Introduction
2. Concrete Pavement Construction
3. Concrete Pavement Surface Texture
4.Interlayers, Base Course and Drainage
5.Outlook
Content
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Modified Asphalt Paver
Air Void Content 23 % b. vol.
Concrete Pavement Innovations
-Poures Concrete –
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Concrete Pavement Innovations
-Diamond Grinding –
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abstreuen mitChromerzschlacke 1/3 mm
Concrete Pavement Innovations
- Epoxy Coating with Chrome-Ore Slag –