Avanzado control de calidad en compactación
de asfaltoWinfried Schramm
Director de Aplicación
• Asphalt compaction and challenges
• Automatic optimisation of compaction (IC)
• Continuous Compaction Control (CCC)- Compaction Management System- Roller network at site
• Future Developments- Digitisation - Job-site processing
ADVANCED DIRECT QUALITY CONTROL FOR ASPHALT COMPACTION
Challenges: Wide range of asphalt mix designs
Dense-graded
Open-graded Gap-graded
S M A: Gap graded with
- % of crushed stones,
- mastic filler, sand and PmB.
- difficult to compact
Safety: Reduced vehicle spray and hydro-plane
Durable: For high traffic and heavy truck routes
Gap graded mix
Compaction methods
Static compaction (Tandems, PTR)
Dynamic compaction (fixed parameters)
Vibration, Oscillation
Intelligent compaction (IC) (automatic adjusting)
for asphalt and soil
• Unexperienced operators
• Too many passes
• Over compaction:
- pulverization of aggregates
- surface loosening effects
- fatting-up with bitumen
cracks
cracks
Daily risks:
base course binder thinner layers
I C: Automatic optimisation
Direct information:
- Temperature
- Compaction progress
- Work programs
EVIB (MN/m²)0,5 mm
130 °C
prof ASPHALT MANAGER
IC: What are the benefits for operators?
0,5 mm
130°C
Valuable information:
• Compaction progress
• Mix temperature-T°C
Work programs:
• Typical compaction tasks
base course, binder
wearing courses
Advantage: Quick reduction of amplitude
Avoids over compaction
SMA 0/8 S, thickness 3cm / 10 t – Tandem roller with AM
Auto Compaction Ctrl.:
Surface quality:
after 4 passes with AM2135 mm drum width
0,8 mm directed amplitude
250 kN force
BW 203 AD-AM (13 t); SMA / thickness 7 cm
Nürburgring racing course (Germany)
Compaction of SMA
Tight limits for
- Evenness (≤ 3 mm)
- Surface grip
Night time paving: Zurich Airport / 2008…..
Rehabilitation of main runway
up to 500 t/hr
4x finshers
10 x rollers with AM
25 cm base course
10 cm binder, 4 cm SMA
Job-site-today: C-C-C
Tablet-PC + Office Software
Compaction maps with Pass count Temperature Compaction value
Same overlap
Same No. of passes
(everywhere)
Clear routine for compaction
That was then: 2007
Experienced operators + testing field
Zeltweg Airport runway / Austria
Asphalt 400 t/hr
3 mixing plants
6 finishers / 10 rollers
Colour Codes: Roller passes
red = ≤ 2 passes
green = compaction in progress
blue = target passes achieved
Continuous Compaction Control (C-C-C)
Office Software incl. Statistics
- Plug & play
- Print-outs (PDF-documents)
Documentation:
Highway A6 / Nürnberg (D); PPP-Project
Quality control system: 4 rollers with WLAN
Porous asphalt:
Documentation of
- Roller passes
- T°C in a distance to
finishers
Compaction network:
Highway A3 / Regensburg (D);
Complete reconstruction: 4 rollers with WLAN
Summary
Intelligent Compaction (IC) has matured
The technology works,
- saves costs - improves quality
Quality control + Documentation -evident on big scale projects
- particular on PPP-projects
Summary: IC improves Quality and Efficiency; Good quality means consistent results…
Our target: Longest service life with minimum repairs
Road construction business becomes more transparent and cost efficient with
• Network of all construction machineries, Cloud-based
• BIM = Building Information Modelling
= Integrated operation method incl. planning, execution and management of a job-site
• Optimisation of cpl. construction process + detailed documentation:
= More precise estimation of asphalt density during paving or compacting e.g. via layer thickness…
The Future is now!
Stay tuned!
Thank-you
Winfried SchrammApplication Manager
Dept.: MPMTel.: +49 6742 100339
Fax: +49 6742 100520339Mobil: 01713030954
[email protected]://www.bomag.com