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CONCRETE ROADS FOR LOW TRAFFIC VOLUMES. Brian Walker BCP Engineers. Advantages Of Concrete Roads. Ideal for emerging contractors Low capital costs on plant Can be laid on very steep grades Little or no layerworks required Low maintenance costs. Ideal for emerging contractors. - PowerPoint PPT Presentation
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CONCRETE ROADS FOR LOW TRAFFIC VOLUMES
Brian Walker
BCP Engineers
Advantages Of Concrete Roads
• Ideal for emerging contractors
• Low capital costs on plant
• Can be laid on very steep grades
• Little or no layerworks required
• Low maintenance costs
Ideal for emerging contractors
Low Capital Costs on Plant
Can be laid on very steep grades - - greater than 25%
Little or No Layerworks
Low maintenance costs
Some Problems With Concrete Roads
• Incorrect aspect ratios
• Irregular shaped panels
• Settlement of fills
• Late saw cutting of joints
• Plastic shrinkage cracks
Incorrect aspect ratio of panel
- Must be less than 1.2
Irregular shaped panels
Settlement of Fills
Late Saw Cutting of Joints
Plastic shrinkage cracking
Other Types Of Concrete Roads
• Rollcrete
• Interlocking concrete blocks
Rollcrete
Interlocking Concrete Blocks
Some Concrete Road Projects
Wiggins Umkhumbane
Brooks Farm
Cato Manor
Westrich
Cost Comparisons Asphalt/concrete
S-B G2 Premix 25 Mpa
Conc.
Total
Asphalt R25 R28 R21 R0 R74
Conc. R0 R0 R0 R87.50 R87.50
Summary
• Lower maintenance costs
• Helping emerging contractors
• Low capital cost of plant
• Ideal for steep grades
• Can reduce the cost of drainage
• Reduced requirement for scarce layerwork material
How Not To Build A Road
• Inappropriate surfacing
• Combined withno maintenance