Rehabilitating roads by replacing wearing course is a highly cost-effective and eco-friendly process, very popular in numerous countries. For many years now, VÖGELE have offered their SUPER 1800 SF Paver with Integrated Spray Assembly for Bitumen Emulsion, which allows the old pavement to be sprayed with emulsion and the new wearing course to be laid in a single pass.

VÖGELE now present a cutting-edge concept, ideal not only for paving thin layers on spray seal or tack coat, hot on hot, but also highly interesting for many non-specialized road building companies. After all, the VÖGELE "SprayJet" Module offers an economical and clean alternative wherever pre-spraying and subsequent paving are required.

The VÖGELE concept of the "Paver with SprayJet" is based on a SUPER 1800-2 of standard design which, after minor modification and addition of a newly developed spray module, can be used for emulsion spraying. The motif behind this concept was above all economic aspects, as in comparison with other systems, the paver can be converted back to a standard paver in a very short time and used for conventional paving as usual.

The "SprayJet" Module offers a host of technological advantages. For instance, the rate of spread can be set from 0.2kg/m², allowing the bitumen emulsion to be finely metered and applied in small volumes at slow pave speeds. Thanks to an extremely low constant spraying pressure of just 3 bar prevailing in the system, the spraying work can be performed with a minimum of spray mist and pollution. As this was not possible with previous systems, "SprayJet" is a trailblazer in both economical and ecological terms.

Use as spray paver or conventional paver for jobs as uaual

When it comes to new developments, VÖGELE always focus on designing machines that are particularly cost-effective. Thus, the SUPER 1800-2 can be used equally as a conventional paver and as a spray paver – its spray module can be fitted or removed in just a short time. The advantage is clear: if there are currently no jobs requiring the use of the "SprayJet" Module, contractors can employ their SUPER 1800-2 for conventional paving tasks at any time, thus increasing the machine’s degree of productive utilization.

The spray-ready paver is powered by a PERKINS engine type 1106D – E66 TA rated at 130 kW. The engine comes with an integrated air compressor generating a maximum pressure of 10 bar for opening and closing the spray nozzles.

The "SprayJet" module

The "SprayJet" Module is more or less the nexus of the new spray technology. It includes an emulsion tank holding 2,000 litres. As a matter of principle, the tank should be filled with hot emulsion. The tank nevertheless has an integrated heating unit (2 x 7 kW) to keep the emulsion at the desired temperature. Temperature sensors are fitted in order to prevent the emulsion from burning and automatically switch off the heating process if the emulsion level becomes too low. The heating limit can be set via controller to a value between 0 and 100 °C. In order to maintain the bitumen emulsion in a highly homogenous state, the "SprayJet" Module comes with a heated emulsion pump driven by a hydraulic motor with rpm sensor. This pump ensures that the emulsion is kept in constant circulation.

The "SprayJet" Module is controlled with the help of an on-board computer and an operating unit provided on the spray module itself. Just like the ErgoPlus operating concept for the paver, handling is extremely easy to comprehend and facilitated by self-explanatory symbols. The specified rate of spread or desired emulsion temperature, for example, can thus be configured very easily and without complications.

Like all "dash 2" generation pavers, SUPER 1800-2 comes with the VÖGELE ErgoPlus operating concept, which substantially facilitates handling of the paver for the paving crew. The only major difference is the integration of an additional menue for the spray system in the display of the ErgoPlus operating console. In addition to the functions for activating and deactivating the automatic spray system, this menue also provides two other very useful functions that allow the "Start of job" and "End of job" to be selected at the press of a button. The "Start of job" function ensures that the various spray bars are activated selectively, so that the spraying process over the entire pave width starts precisely at the specified position.

The spray technology

Compressed air tanks with a total capacity of 75 litres are integrated in the paver for supplying the pneumatically operated valves of the spray nozzles with compressed air. In the system a pressure of 8 bar prevails. The SUPER 1800-2 is fitted with five spray bars with a total of 20 self-sealing spray nozzles. The spray bars are positioned on the paver so that the emulsion film spread on the base cannot be damaged by the paver’s tracks.

The special technical design of the nozzles and the constant praying pressure of 3 bar allow abolutely uniform spraying. This makes it possible to spray along road curbs without getting emulsion on the curb. The formation of spray mist is also reduced substantially by the new VÖGELE procedure, as the spraying pressure is very low and the spray droplets are larger. VÖGELE "SprayJet" thus represents a major advantage for the job site team, as emulsion fumes are reduced to a minimum.

A very important technical innovation of the VÖGELE "SprayJet" module refers to the rate of spread. While conventional systems were only able to apply large spray volumes in the past, "SprayJet" allows to select a spray volume from 0.2kg to 1kg per square meter. This allows working even at slow pave speeds without applying excess emulsion. Pave speeds of between 0 and 15m per minute are possible.

SUPER 1800-2 with "SprayJet" module combines with a ultra-modern AB 500-2 Extending Screed allowing pave widths of up to 5 m. Like all VÖGELE screeds, AB 500-2 features electric heating. Screed and emulsion tank are heated independently, so that heating of the emulsion can take place without having to heat the screed. An additional gas heating system can be used to quickly heat up cold emulsion.

The SUPER 1800-2 with "SprayJet" module, in brief, is a sophisticated piece of equipment perfectly suited not only to paving thin layers, but also to getting any kind of conventional paving work done in which emulsion has to be sprayed. As the emulsion tank is integrated in the paver, sufficient emulsion is available at all times. This allows job site times to be reduced substantially. As, due to the equipment’s design, asphalt is paved immediately after the spraying of emulsion, pollution and soiling the surrounding areas is effectively avoided.

The Advantages of SUPER 1800-2 with "SprayJet" Module for Users

• Suited for conventional paving applications, with spray system for bitumen emulsion integrated in the paver
• For paving thin layers on spray seal or tack coat, hot on hot
• Easy demounting of “SprayJet” module allows use of the paver for standard tasks, thus increasing economic efficiency
• Compact design renders paver ideal for inner-city applications, inexpensive transport
• No spray mist soiling adjacent areas, as emulsion is directly covered with asphalt

The Ultimate in Spray Technology at a Glance

• Uniform rate of spread across entire pave width up to 5 m
• Spray volume from 0.2 kg / sqm allows smallest quantities to be applied highly economically
• Very low and constant spraying pressure (3 bar) reduces spray mist to a minimum
  and achieves uniform spraying
• Rate of spread selected between 0.2 and 1.0 kg / sqm, independent of pave speed
  (2 m / min. to 15 m / min.)
• Ideal spray pattern due to double-slotted spray nozzles
• Easy handling
• Practical automatic function to set “Start” and “Stop” of spraying

The "SprayJet" Module

• Emulsion tank holding 2,000 litres, heated electrically (up to 80 °C)
  and insulated against loss of heat
• Emulsion tank filled by internal pump at up to 120 litres / min. or,
  alternatively, via external pump (e.g. tanker)
• SUPER 1800-2 with "SprayJet" Module
• Pave width up to 5 m with AB 500-2 Extending Screed
• High Compaction Technology (TP1) available
• PERKINS engine type 1106D – E66TA, with air compressor

Press and product information:

JOSEPH VÖGELE AG

Press and Public Relations

Neckarauer Str. 168 - 228

68146 Mannheim

Germany

Tel.: +49 (0) 621 8105 202

Fax: +49 (0) 621 8105 469

presse@voegele.info

www.voegele.info