RETROFITTING OF RCC STRUCTURAL MEMBERS

Retrofitting of RCC structural members is necessary to prevent further distress in concrete. The retrofitting of RCC members should start with investigation and diagnosis of cracks and then by applying suitable retrofitting measures. Following are the steps involved in this ...

Maintenance of Concrete Structures for Durability of RCC Members

Maintenance of Concrete Structures for Durability of RCC Members Modern concrete is a very durable construction material and, if properly proportioned and placed, will give very long service under normal conditions. Many concrete structures, however, were constructed using early concrete technology, and ...

REPAIRING OF PLASTER IN WALLS

Repairing of plaster is needed from time to time as the building ages. The plaster repair work includes cutting the patch and preparing the wall surface. Procedures involved in repair of plaster are: 1. Setting up Scaffolding: Scaffolding if required for the proper ...

SEGREGATION OF CONCRETE – CAUSES & PREVENTION

Segregation of concrete is separation of ingredients of concrete from each other. In good concrete all concrete aggregates are evenly coated with sand and cement paste and forms a homogeneous mass. During handling, transporting and placing, due to jerks and vibrations ...

EPOXY COATING OF STEEL REINFORCEMENT

Epoxy Coating of Steel Reinforcement It is important to use epoxy coated rebar to protect steel from corrosion. Using certain types of epoxies yielded positive results, especially in steel exposed to seawater while evaluating the use of epoxy to coat steel ...

POST TENSIONING IN REHABILITATION OF STRUCTURES

POST TENSIONING IN REHABILITATION OF STRUCTURES Post tensioning has become very popular these days sensing the advantages it provides. Even small structures of G+2 are using post tensioning these days. The application of post tensioning has increased and it is well being ...

REPAIRING OF OFF-CENTRE FOOTINGS

Fixes for Misplaced Footings It is sometime hard to position footings in the trench, so contractors often see walls that are not in the center of the footing (Figure 1). The foundation wall has to be located correctly to support ...

ROUTING AND SEALING OF CONCRETE CRACKS

Routing and sealing of Concrete Cracks Routing and sealing of cracks can be used for dormant cracks not involving the restoration of tensile strength. In this method the crack is enlarged along its exposed face to form a V-shaped groove up ...

SURFACE PREPARATION FOR CONCRETE REPAIR

Concrete Surface Preparation for RepairAll the success of a concrete repair work depends on the surface preparation. Similarly, repairs to reinforced concrete must include proper preparation of the reinforcing steel to develop a bond with the new concrete. Surface preparation ...