REBARIN TECHNIQUES/ PROCESS USED IN CONSTRUCTION OF NEW STRUCTURE WITH AN OLD STRUCTURE

REBARING
Rebaring is a process of connecting old RCC structure with new RCC structure with the help of rebaring chemicals(Epoxy).It is a new techniques used in construction industry to connect two structure or to elongate or extend structure with strong connection with old structure .You can see in image the steel bars are connected with the structure with the help of rebaring chemicals by doing this the steel bars create a strong connection or bonds with the structure and this steel bar can be now elongated or extend as required by the help of lapping and then we can construct new RCC structure which will be connected with old one.To be more clear we can take a example suppose we are constructing a framed structure building in which we use beams and columns and we started construction and we constructed foundation after that plinth beam after that column after that beam and slab after construction of these all things we also require RCC LINTEL BEAM in certain place now how can we place this RCC lintel beam between two prepared column for this construction of RCC LINTEL BEAM we can use rebaring process to construct RCC LINTEL BEAM.

LINTEL BEAM CASTING WITH THE HELP OF REBARING PROCESS

LINTEL BEAM  CONSTRUCTION BETWEEN TWO PREPARED COLUMN

The images of rebaring will make you clear about what actually is rebaring process and how it will be usefull in construction industries.If we talk about connection of old rcc structure with new one in traditional way we simply broke some part of structure to make connection of structure with other structure but this decreases the strength of structure so now we do rebaring for joining or extending the rcc structure.For this we only need one additional material i.e REBARING CHEMICAL or EPOXY.The process of doing rebaring are listed below step by step.

1. Drilling of holes:-The holes diameter should be 2mm greater then the dia of steel bar which will be used for rebaring.
2. Cleaning of drilled hole:-The drilled hole should be cleaned properly by blowing air in the drilled hole and also with the help of water jet to ensure no dust particles in hole.
3. Placing of rebaring chemical or epoxy (eg-HILTI HIT RE 500):-The hole should be filled 2/3 parts by rebaring chemical .
4. Placing of steel bar into hole:-The steel bar should be placed into hole the steel bar while placing into hole should be gently  rotated throughout  placing of steel bar.

EPOXY