TarmacDry for Johnson & Johnson HQ car park

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Johnson and Johnson required the construction of a short section of new access road within their facility whilst also providing a durable paved surface to an existing 500m long unbound chalk access track. 

Conscious of the need not to affect the natural balance of how rainwater currently soaked away, Johnson and Johnson requested a system that would not simply channel water into the site's

drainage system but continue to allow it to percolate naturally into the ground.

Tarmac's solution

Following three months of liaison, discussions about the overall works programme and the agreement of an acceptable quote for the work, a 150mm deep layer of porous sub-base was shaped and profiled onto the existing surface of the track. To prevent future weed growth and in the absence of any geotextile membrane the surface was treated prior to placing the sub-base.

The new concrete edgings were then installed, followed by machine laid porous base and surface courses on dates previously agreed to the main contractor's own programme of works.

During all those periods of time when TarmacDry was being installed Tarmac maintained a site presence to provide further technical assistance and to supervise the works.

 

For details please download the full case study: Johnson & Johnson internal access roads (pdf, 314kb)
Read more about TarmacDry porous asphalt system.

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