Glass Fiber Wrapping can be used where concrete looses its capacity/design strength due to corrosion change in use and / or the design code demands increases in load carrying capacity. It can also be used for restoration of the damages RCC Structures and to regain its design strength.
Fiber wrapping is the latest strengthening/enhancement technology for reinforced concrete and masonary structural members. It is used for flexural, shear or confinement strengthening of structural members. and ensure minimum disturbance to the structural members as compared to other conventional methods.
Fiber wrapping is the latest strengthening/enhancement technology for reinforced concrete and masonary structural members. It is used for flexural, shear or confinement strengthening of structural members. and ensure minimum disturbance to the structural members as compared to other conventional methods.
Advantages:
- Multifunctional can be used in bending and in shear
- Low in weight
- Available in any length
- Flexible, fits around any given structural element
- Excellent chemical and weathering resistance
- Low overall thickness
- Economic application
- Easy to use solvent free impregnating resin
Glass fiber wrapping solutions that are fiber reinforced epoxy, wrapping system for restoration of damaged concrete. These are ideal for restoration of structures such as earth- quake damaged concrete, columns & beams and marine structures where speedy repair and high strength are required.
Glass fibres are sensitive to stress corrosion at high stress levels and have some problems with relaxation. When the fibre and matrix (Epoxy) are combined to a new material it becomes a composite. The fibres may be placed in one direction in the composites and then the composite is unidirectional. However, fibres may also be woven or bonded in many directions and the composite becomes bi- or multi-directional. For strengthening purposes, it is most common to use unidirectional composites. The properties of composites are dependent on the type of fibres, matrix, fibre quantity and fibre direction.
Glass fibres are sensitive to stress corrosion at high stress levels and have some problems with relaxation. When the fibre and matrix (Epoxy) are combined to a new material it becomes a composite. The fibres may be placed in one direction in the composites and then the composite is unidirectional. However, fibres may also be woven or bonded in many directions and the composite becomes bi- or multi-directional. For strengthening purposes, it is most common to use unidirectional composites. The properties of composites are dependent on the type of fibres, matrix, fibre quantity and fibre direction.
Typical Applications

Strengthening under designed RCC Prestressed concrete structures subjected to axial loads, bending or both. Typical are - strengthening the piers of bridges which are to receive higher loading due to heavier traffic or due to lane widening (or superstructure widening without changing the piers).For strengthening the existing T-beam bridge superstructure. In this case, the flexural and shear capacity of T beams can be increased.
Strengthening of slab beam or flat slab structures by adopting composite system by providing additional concrete topping on existing slab and fiber reinforcement from underside of slab and beam. About 30% improvement in structural capacity is possible.
Strengthening existing RCC corrosion damaged structures like columns, beams, silos, water tanks, process vessels (in RCC in Industrial plants). The strengthening would itself provide protection from further attack. It can be done with minimum shutdown and consequentially less downtime cost.
Tall chimney structures can be strengthened for enhanced performance under changed earthquake conditions.
Old Masonry structures such as monuments, temples, churches etc. can be strengthened using fiber wrapping. Here the confinement offered by wrapping increases the integrity of masonry (which in fact is in question in case of old structures). Wrapping can improve stability of the masonry domes as well.