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Upgrading Link Road from E11 to Military Airbase - Madinat Zayed
The existing road from E11 to Madinat Zayed was rehabilitated and dualled in a design build contract. The asphalt thickness over 18km length was justified by a re-design incorporating Tensar AX5-GN interlayer to improve fatigue performance. A further 2km length using a thin overlay, incorporated Tensar Glasstex Grid R60N interlayer to control cracking and increase life.
The project was let as a design build contract. Initial assessment showed that the 50km existing road has deteriorated to varying degrees. The original proposal was to fully reconstruct some sections and remove and replace asphalt for a 33km stretch. However, by the time construction was to start, the pavement had deteriorated further, forcing the contractor to reassess the design and increase overlay thickness. An alternative solution was needed to control the escalating cost.
Tensar proposed incorporating Tensar AX5-GN over the 18km length to improve the fatigue life of the asphalt layer and to achieve the required pavement life without increasing asphalt thickness. Tensar Glasstex Grid R60N+ was proposed for a 2km section, where a thin overlay was to be installed over the existing road surface, to control reflective cracking and extend the overlay life.