Selecting the Right Assets for Precast Concrete Pipe Machine Selecting the Right Assets for Precast Concrete Pipe Machine

Concrete Pipes are the most versatile, durable and economical conduit material. They are integral components of our infrastructure being employed in a wide range of applications. Precast Concrete Pipes are widely used for water mains, Sewer, Culverts and in Irrigation. Today, Concrete Pipes are being manufactured commonly on conventional spinning system process and latest Vertical Vibrated Casting Process.

In Spinning, here the concrete is fed into the mould and is compacted by centrifugal spinning process whereas in Vertical Cast, each pipe is produced with dry mix concrete is placed in the mould and the inner core is vibrated to ensure solid compaction of the concrete. It further allows immediate demoulding of the finished pipes. Spigots are formed by applying a profile ring which ensures a strong well compacted and accurate casting each the initial casting process. Pipes are then left in situ for 24 hours for initial curing, once this process is done, a full quality control inspection is completed for each pipe before being stored for the remaining curing process.Identify the difference and salient features for Vertical Vibrated Casting Process Vis a Vis Spinning Process.

Central Core Vibration:

  • Homogeneous compaction
  • Uniform material distribution
  • Uniform crushing strength at jacking surfaces
  • Uniform concrete at surface – no cosmetic cracking
  • No leakage and resulting stony surface areas
  • Spigot receives efficient dry cast pressing & compaction

Spun Pipes:

Selecting the Right Assets for Precast Concrete Pipe Machine
  • Non uniform compaction
  • Larger aggregates toward outside, finer sands and light materials at inside surface
  • Non-uniform crushing strength at jacking surfaces
  • Tendency to find craze cracks at inner pipe surface
  • Rough and stony collar back walls and seam areas
  • Thin spigot making it vulnerable to damage

The Real Advantage of Vertical Cast Pipe Machine.

In addition to the quality of pipes and greatly improved environmental footprint, Vertical Cast Process also provides an unprecedented opportunity to change the way we think about major projects. Using this process, the efficiency to produce Concrete pipe increase potentially. It can produce 60-80 pipes a day verses the traditional constraints of spun pipe supply at 2-3 pipes a day further reducing our time and cost by.

1) Having multiple Site works underway at any time.
2) Jobs can be run as a number of contracts or subcontracts.
3) Increasing productivity by laying more pipes per day.
4) Laying a Standard Pipe Size to gain cost savings through increase production efficiency.
5) The ability for the customer to customise the supply schedule with Vertical Cast Process.


Compliance Factors Vibration Technology Spun Pipes
Water cement ratio Low at approx .34 – .38 High at approx .45. Then spun out to approx .30 - 35
Slumping No slumping Slumping with minor pipe variations
Variability High and transparent Higher variability in the concrete
Compressive strength Compressive strength resulting from low and constant water cement ratio High compressive strengths but reliant on variable production factors
Wall thickness Heavier walled pipe providing increased cover and longer design life Thin walled pipe with lower cover resulting in shorter design life
Capacity Production of large numbers of pipes possible per day Only production of small numbers of pipes possible per day
Pipe tolerances Excellent and consistent tolerance control due to automated process Variable tolerances determined by operator skill
Liner locking system Can use any liner locking system Liner applications restricted to vulnerable arrow head compressive applications

Conclusion

Vibration casting uses a high grade, low water cement ratio concrete giving a high strength to the end product. The concrete in the mould is compacted under the external surface is formed by moulds thereby totally eliminating the human element and giving a high quality pipes.

Selecting the Right Assets for Precast Concrete Pipe Machine Selecting the Right Assets for Precast Concrete Pipe Machine

Now, the Concrete pipe manufacturers will be able to understand the changing scenario and eager to a quick decision to adopt this technology.

Pakona had been offering complete range of Concrete pipe Machine from Mario Croci & Figly, Italy in India. Currently, Pakona is operating successfully 5 Fully Automatic & SemiAutomatic Machines in India.
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