Page 51 - RoadCem Manual - PCT BV

The availability of equipment is also important. A grader can mix the material but with a layer thicker than 25 cm it is advisable to use a recycler, soil stabilizer or cultivator.
Compacting the layers needs to be done securely using a static drum roller. If there is only a light weight roller available then compaction will be poor and strength performance will be compromised..
In some countries the costs of the different materials used in road construction, the concrete and the RoadCem will differ. This must be considered when making the design and with execution of the project.
It is recommended to discuss all these points with the client before the final designs are made, especially when these have been accepted by the potential contractor.
3.3 Conclusion
The data and information discussed in this Chapter is the minimum data and information needed for a good design. Other factors may be important in different project situations. In summary. the detailed specification of the following main factors needs to be prepared for a successful pavement design and for the identification of an “OPTIMAL” solution:
• User and Client Requirements.
• Traffic and Load intensity and dynamics.
• Material availability and specification.
• Equipment availability and specification.
• Economic and development specification.
When the first 2 of the above are known it is a matter of applying a structured design process to show what the advantages to using a RoadCem based solution are. To make RoadCem solution an acceptable solution it will usually be required that at least two comparative designs be prepared – one based on a conventional approach and one based on RoadCem technology. When this is done properly, the users and the client are typically convinced that the RoadCem approach is a better and more “OPTIMAL” solution than the conventional solution.
Until such time when RoadCem based solutions are considered main stream this design overhead is a necessity and will be necessary.
51