On a racing circuit in Japan a set of Vögele pavers have been used to lay the asphalt
With tight corners and uphill gradients of up to 19 per cent a private race track has been built near Tokyo with the help of three Vögele pavers and a material feeder.
The race track was commissioned by Corns & Company Limited and has been built about 70km from Tokyo. The race track is part of a leisure facility for sports car enthusiasts that includes Japan’s first race track for customers with their own vehicles. The 3.5km circuit features steep downhill gradients of up to 16 per cent and uphill gradients of as much as 19 per cent. The longest straights extend for 800m.
Maeda Road Construction Co., Ltd used four Vögele machines to manage the challenging new-build. The Super 1800-3i, Super 1803-3i and Super 1900-2 paved just under 100,000 square metres in four layers, while a MT 3000-3i offset material feeder transferred asphalt from the truck to the material hoppers of the pavers.
The three pavers paved an 18cm non-bonded base course, a 12cm bonded base course, a 6cm binder course and a 4cm surface course. In addition to the racing circuit measuring 36,000 square metres, paving work involved another 60,000 square metres of run-off area, a pit lane and service roads.
The pavers worked mainly ‘hot to hot’ where two machines paved together at a slight offset to produce an asphalt surface without joints, measuring 8 to 12m across the full width of the carriageway. This ensures that the carriageway has both high resistance to deformation and a long service life.
With different undercarriage concepts the pavers are designed to suite different aspects of the job. The Super 1800-3i tracked paver has a high degree of traction and maintains consistent straight-line travel, whilst the Super 1803-3i wheeled paver is particularly good at producing corners with a tight radius, Vögele says.
With the MT 3000-3i offset material feeder the PowerFeeder decouples the transfer of material from the truck to the paver to ensure a constant, efficient paving process. Conical augers in the receiving hopper of the material feeder convey the material crosswise to render it thermally homogeneous. The material feeder has effective heating of both conveyor and transfer points, actively counteracting cooling and segregation of the material.
The offset version of the machine has a height-adjustable conveyor which can pivot 55° to the left and right. The discharge point into the extra material hopper of Super pavers can be as high as 3.6m, optionally up to 3.9m. Despite the extreme grade and slope, the pivoting conveyor meant that on the race track job site, the MT 3000-3i offset could continuously feed two pavers with material alternately without the need to manoeuvre constantly.