Concrete jacketing is a construction technique used to strengthen and repair existing concrete structures that have suffered damage or deterioration due to various reasons such as corrosion, weathering, or overloading. The technique involves adding an additional layer of concrete, typically in the form of pre-cast or cast-in-place panels, to the surface of the existing structure.
The process starts with cleaning and preparing the surface of the existing structure to ensure proper bonding between the existing and new concrete layers. A bonding agent or primer may also be applied to enhance the adhesion between the two layers. The new concrete layer is then applied to the surface of the existing structure and reinforced with steel bars or mesh to provide additional strength and improve durability.
Concrete jacketing can be used to increase the load-bearing capacity of a structure, repair cracks and spalling, and protect against further damage from environmental factors. It is commonly used in the rehabilitation of infrastructure such as bridges, tunnels, and buildings, as well as in the construction of new structures where additional strength is required.