Economical and Versatile: Modular InLine Pave® Technology Truly Excels
“Hot on hot” plus conventional paving with the same machinery.
Contractor Kemna Bau Andreae GmbH & Co. KG used its new VÖGELE InLine Pave® train for the first time for pavement rehabilitation on the B 95 federal highway near Leipzig, Germany. The core element of the “hot on hot” paving method for asphalt roads is the SUPER 2100-2 IP paver for binder course equipped with the AB 600-2 Extending Screed in TP2 Plus version for extremely high precompaction.
“Sure, the team was nervous at first, but it soon became apparent that the InLine Pave® train is very easy to operate. After just one hour, we were pulling together as smoothly as ever and paving could proceed without interruptions”, reported foreman Sven Albrecht.
The B 95 federal highway east of the town of Rötha close to the gates of Leipzig was in need of repair. Extending over a length of 4.7km in all, the project was divided into four sections. Three of them were rehabilitated using the economical InLine Pave® technology from VÖGELE. On the fourth section, the roadworks were carried out in the conventional manner as the binder course was still intact.
Modular design crucial for versatile application and high utilization
The InLine Pave® Machine Technology offered by VÖGELE shows off its skills on just this kind of job site, where paving is performed both “hot on hot” and in the conventional manner. This is due to the fact that the paving train uses machines of standard design, with only the SUPER 2100-2 IP paver for binder course being slightly modified. With the SUPER 1800-2, applied by contractor Kemna for placing surface course in the InLine Pave® train, the MT 1000-1 Mobile Feeder and the SUPER 2100-2 IP for binder course, the company now has three VÖGELE machines that are perfectly matched to one another, but can nevertheless be used for other paving jobs at all times.
For contractor Kemna, modularity was a major point in favour of the VÖGELE InLine Pave® technology. “This significantly increases the utilization of the machines in our equipment pool and the profitability of the investment”, explained Michael Kaiser, Manager of Kemna’s Leipzig branch, when justifying the purchase decision.
First InLine Pave® job with not a single interruption
One important factor for the success of “hot on hot” paving is smooth job site logistics. A reliable organization of the mix supply, for instance, is crucial and should be well planned and executed by an experienced team. And the team from Kemna fulfilled these requirements exceptionally well. The pave speed was matched to the rhythm of mix supply and, intentionally, was about 2m/min. slower than usual. Nevertheless, the roadworks on the B 95 were completed in considerably less time than would have been possible using conventional paving, as binder and surface courses were both laid in a single pass.
Perfect paving results thanks to AB 600-2 Extending Screed in TP2 Plus version
The AB 600-2 Extending Screed in TP2 Plus version is a crucial element when paving two layers with the InLine Pave® train. Combined with SUPER 2100-2 IP for binder course, the screed represents the heart of the “hot on hot” paving technique. It guarantees the extremely high precompaction of the binder course required for “hot on hot” paving, with values of over 98%. The AB 600-2 Extending Screed in TP2 Plus version achieves this high precompaction due to altered tamper stroke lengths, a special tamper geometry and, of course, the use of VÖGELE pulsed-flow hydraulics with two pressure bars for high compaction.
The high precompaction creates conditions that allow the paver placing surface course to travel on the freshly laid binder course. When built up with bolt-on extensions (for this job 2x1.25m), the screed handles pave widths up to 8.5m. On the job site near Leipzig, this enabled Kemna to pave in full-road width.
Job Site Details
Pavement rehabilitation on the B 95 federal highway near Leipzig, Germany
Length of section: 4.7km
(2 lanes in each direction)
Width of section: 8.5m
Pave width: 8.5m
binder course 10cm
wearing course 2cm
19.200 tonnes of asphaltic concrete
(AC 22 BS 25/55-55 ARC/KA)
3.800 tonnes of asphaltic concrete
(SMA 8 S 25/55-55 A/KA)
2 WIRTGEN W 2200 Cold Milling Machines
VÖGELE InLine Pave® train comprising:
MT 1000-1 Mobile Feeder
SUPER 2100-2 IP Paver for Binder Course with AB 600-2 Extending Screed in TP2 Plus Version
SUPER 1800-2 Paver for Wearing Course with AB 500-2 Extending Screed in TP1 Version
HAMM Super DV 8 Roller