Ramaswamy, A (2013) Alternate repair material systems for application to structural concrete. In: IABSE Workshop on Assessment, Upgrading and Refurbishment of Infrastructures, 06-08 May 2013, Rotterdam, Netherlands.
Full text not available from this repository.Abstract
The study presents developments and applications of alternate material systems for repair that have evolved in recent years for application to structural concrete elements as a means of rehabilitation or retrofit. Firstly the widely used fibre reinforced polymer (FRP) of glass, or carbon in the form of a laminate or wrap with epoxy binding as a material in structural concrete applications is discussed. While its main attraction is high strength to weight ratio, the system has some limitations such as de-bonding due to progressive de-lamination at flaws or sudden brittle rupture. Moreover, its limitation in certain applications, particularly exposure to adverse environmental conditions such as moisture (if the binding epoxy is hygroscopic), high temperature (if the binding epoxy melts) such as due to fire is brought to light. The possibility of shielding the FRP repaired concrete in a ceramic or geo-polymer shell so as to offer a complete thermal shield together with a mechanical strengthening system is discussed. Merits of an alternate cement based systems such as fibre reinforced concrete with chopped short wire fibres made from steel, polyester, carbon and glass that are mixed into a concrete matrix, even with a self compacting concrete consistency at the time of casting as an alternate form of a repair system is then discussed. Experimental results and analytical procedures that have been developed to predict the capacity of the variously reinforced structural elements is presented to illustrate the merit of different approaches.
| Item Type: | Conference Paper |
|---|---|
| Publication: | Assessment, Upgrading and Refurbishment of Infrastructures |
| Publisher: | International Association for Bridge and Structural Engineering (IABSE) |
| Additional Information: | The copyright of this article belongs to International Association for Bridge and Structural Engineering (IABSE) |
| Keywords: | Bridge decks; Fiber reinforced plastics; Glass; Heat shielding; High temperature applications; Polymers; Repair; Self compacting concrete; Steel fibers, Analytical procedure; Environmental conditions; Fibre reinforced concrete; Fibre reinforced polymers; Glass fibre reinforced polymers; High temperature; Strengthening systems; Structural concretes, Reinforced concrete |
| Department/Centre: | Division of Mechanical Sciences > Civil Engineering |
| Date Deposited: | 06 Apr 2021 09:38 |
| Last Modified: | 06 Apr 2021 09:38 |
| URI: | http://eprints.iisc.ac.in/id/eprint/66225 |
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