Page 18 - RoadCem Manual - PCT BV
P. 18

     > 100 cm
 Figure 1.1 Typical Road Design and Structure.
Imported material requires transport and environmental and other costs increase with the distance to the source of the material. Often there is the shortage of the material in the country and import from other countries is needed. The reliance on imported material for conventional road construction is a factor that often contributes most to the cost of the road project and its environmental footprint. In fact, the reliance on imported material is the main problem, from a sustainability and efficiency point of view, of the traditional road and pavement design and construction. It is also the main reason for our search for a more rational road design and construction approach aimed at reducing the dependence on imported material while improving the quality and durability of the roads we design and build.
Modern societies produce large quantities of waste materials often disposed off in landfills and considered not to have any value.. The possibility to use many of these waste material as a replacement for the imported virgin material in road construction has been recognized as an option for many years. Up to now only a limited portion of the waste stream could be brought to use in road construction due to pollution problems associated with reuse of waste materials in road construction (leaching, immobilization etc.). The use of RoadCem removes many of these obstacles allowing the use of more waste materials in road construction and making possible the solution of two problems simultaneously:
1. Control of waste streams and pollution.
2. Providing cheaper and more environmentally friendly source of materials for road construction.
With RoadCem the road design and construction also allows for the use of in situ material (any soil type) for road construction. This results in the reduction of the required thickness of the pavement structure and contributes to the solution of the problem of declining resource base for imported materials.
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