Costs of construction of new road pavements and maintaining existing pavements are continuing to increase as quality aggregates becomes more expensive. In addition difficult access conditions especially during wet weather, increase construction times and costs. Maccaferri are able to assist with a number of solutions to solve these common problems into road pavements both in the granular base layers as well as the upper bituminous layers.

Sub-base Stabilisation
Maccaferri offer both TNZ F/7 conforming Bidim geotextiles to provide separation and filtration between the subbase and subgrade layers as well as Tensar geogrids that satisfy the requirements of the NZ Supplement to the 2004 Austroads pavment design guide for pavments over soft subgrades and that can improve the constructability of pavements over soft ground and reduce the depth of aggregate required to achieve the pavement design life.

Asphalt Layer Reinforcement
Increased traffic loadings imposed higher strains within asphalt pavements. These strains result in increased fatigue to the asphaltic layers. A consequence of this is asphalt cracking and water penetration which can lead to further deterioration. Maccaferri offers proven pavement reinforcement technology for retarding cracking and controlling deformation.

Fabric Surface Sealing
Crack reflection and water penetration are a major cause for concern for road engineers. Maccaferri offers Sealmac, a geotextile paving fabric that is impregnated with bitumen to act as a stress absorbing membrane under chip seals and asphalt pavements as well as Bitac bandage strips used under asphalt to control crack reflection and seal construction joints. 

Megaflo Drainage
Controlling moisture levels within road pavements is critical for achieving the long term design performance. Megaflo panel drains are able to remove excess moisture within the pavement faster and more effeciently than tradition round pipe systems. The shorter drainage path and larger water entry surface associated with Megaflo installations limit the time for excess moisture to affect the strength of the structural granular layers within pavements.