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U-Boot Technology

Introduction

  • It is the recycled polypropylene formwork technology used for construction purposes.
  • One of the obstacles with concrete constructions, in case of horizontal slabs, is the high weight, which limits the span.
  • It creates lighter economical design for structure.
  • For this reason major developments of reinforcement concrete have focused on enhancing the span.
  • This is used to construct two way slab, large span slab, mushroom slab and raft foundation in RCC structure.
  • It is suitable for high rise building, hospitals and parking management residential and industrial buildings.
  • In U Boot Technology, slabs are created with large span and makes floors thinner by reducing the weight while maintaining the performance of reinforced concrete slabs.

What is U-Boot Technology?

  • U-Boot beton is a formwork made of recycled polypropylene.
  • Void form work placed in between the top and bottom reinforcements of slab.
  • U-Boot Beton is used to create slabs with large span or that are able to support large loads without beams.
  • U-Boot Beton is a recycled polypropylene formwork that was designed to create lightened slabs and rafts.
  • U-Boot system can be combined with other technologies like pre-fabricated with other technologies like pre-fabricated slabs and post tensioned steel. The technology of hollow slabs with post tensioned steel reduces the weight of slab and its thickness.

Materials for U-Boot Technology

  • Cement
  • Steel
  • Fine aggregate
  • Course aggregate
  • Water
  • Recycled plastic mould (u-boot shells)

Types of U-Beton

  • Single U-Beton
  • Double U-Beton

Installation Process

  1. Place lower reinforcement above the formwork.
  2. Now place the U-Boot above the lower reinforcement at the specified intervals provided by the horizontal link connectors.
  3. Now complete the upper reinforcement which above the U-Beton.
  4. Now pouring of concrete is being done.
  5. Now concrete is poured and slab is ready.

Advantages of U-Boot technology

  • Increased number of floors.
  • Large span.
  • Reduced slab thickness.
  • No beams between pillars.
  • Reducing in the number of pillars.
  • Reduction in the overall load of the structure weighing on the pillars and the foundation.
  • Reduced foundations- less deep foundation excavation.
  • Improved acoustic behavior.
  • Economic
  • Pillars spacing is increased
  • Thickness of the slab is reduced

Applications of U-Boot technology

  • Used in public buildings, hospitals, industries, etc.
  • Used in raft foundations.
  • Used in two way slabs.
  • Overall thickness of the slabs reduced.

Benefits of the system

  • Design freedom
  • Down stand beams and bearing walls eliminated
  • Reducing overall costs
  • Reduced dead weight
  • Longer spans between columns
  • Construction is less weather dependent
  • Reduced foundation sizes
  • Reduced concrete usage
  • Environmentally green and sustainable

Conclusion

  • By using this technology we can save more concrete and steel by that structure is more economical for us.
  • Less use of iron in the slabs, pillars and foundation up to a total of 15%.
  • There are anti-seismic advantages connected to reduced building weight slimmer pillars and foundations, there are low chance of seismic effect on the buildings.
  • Due to the fact, that the structural behavior of this new kind of monolithic flat slab is the same as for solid slab, excluding slab-edge column connection, we surely can talk appropriateness of use and advantages of the new technology.
  • This technology is very prospective in modern construction and perhaps future of civil engineering belongs to this new kind of hollow slab.

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