Precast Modular Sections
The overwhelming advantages of a precast system over a cast in-situ system have led to the decision only to manu-facture Tubular Track products in precast modular sections.
The advantages of precasting are the following:
- A factory environment enables all products to be manufactured to the highest standards of quality and tolerance
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- Accurate concrete batching ensures that design strengths are always achieved
- Concrete curing can be properly managed
- Modules are cast in moulds which enable dimension tolerances to within 1mm to be achieved
- Upside-down casting eliminates under-filling of bags
- Correct track geometry is maintained during pumping
- Rail seats are perfectly formed in the moulds
- Rail seats are able to accommodate a variety of rail sizes
- Quality control and quality assurance programmes can easily implemented and managed
- Working under cover improves quality and productivity
- The factory can be sited close to sources of labour, water and other resources, with concomitant social and financial advantages
- Women can be employed in the manufacturing process
- Precast modules are delivered to site with minimal or no damage to the environment. Cast in-situ operations are not environmentally friendly
- Modules can be laid quickly, easily and accurately
- Traffic can be quickly accommodated (No waiting for concrete strengths to develop)
- Should a derailment occur, damaged components and modules can be easily replaced
- In mines, precast modular switches do away with the necessity to sling switches down shafts
- A recent installation of Tubular Modular Sections in a Platinum Mine in South Africa resulted in:
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- Increase of loco and hopper size
- Halving of turnaround time
- No rail breaks for 18 months
- Precasting enables turnouts to be very accurately manufactured, and quickly installed