Page 21 - RoadCem Manual - PCT BV

designers are also often familiar with properties of different types of sludge and other waste and polluted materials but not necessarily of the new methods and technologies available to modify the properties of all materials. This fact has eliminated and/or limited the use of many materials in road construction and has established a state of practice where only certain materials can be used for road construction.
The use of RoadCem changes a situation as materials which in a traditional approach had a negative value and needed to be removed and/or disposed of at a significant cost, now suddenly become materials which have a positive value and which can be used in road construction. At the same time these non traditional materials can achieve the same performance requirements such as resistance to deformation and cracking at thicknesses lower than the layer thicknesses needed with traditional; materials. The net effect is that road construction with RoadCem often results in a 30% to70% reduction in the cost of building a road. Other factors such as reduced or eliminated environmental/ecological footprint make the advantage that much more important.
To achieve these benefits both the design and construction phases of the project need to be modified (See Figure 1.3). The design fraternity needs to be familiarized with modified material properties resulting from the use of RoadCem. This is no easy task and requires a lot of research data and experimentation before the use of RoadCem can be classified as a mainstream (traditional) method of road construction.
The diagram in Figure 1.4. shows step-by-step procedure for working with RoadCem.
CLIENT REQUIREMENTS
STEP 1
CHARACTERISE
MATERIALS (SOIL/WASTE STREAMS, ETC.)
STEP 2
DESIGN AND TEST THE MIX
STEP 3
DESIGN & OPTIMISE PAVEMENT STRUCTURE
STEP 4
STEP 5
USER EXPERIENCE
STEP 6
CONSTRUCT THE PAVEMENT
APPLY SURFACING AND MAINTAIN
ESTABLISH DESIGN CRITERIA
Figure 1.4 Step-by-step plan - “working with RoadCem”.
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