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Strengthening of Column Stump Using Glass Fiber Composite Strengthening System

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Abstract:

The durability of concrete structures has long been a concern of many countries, especially in the island country of Singapore, where many structures are constructed along coastal areas. Currently, the durability of concrete under marine conditions can be enhanced by the addition of admixtures, and using high grade concrete. The FRP system has been proven to be one of the effective method to strengthen the concrete structure. The FRP system, which composed of the epoxy and glass fiber was evaluated according to various standard testing methods to get the basic technical information of the FRP system. Concrete columns of high aspect ratio with the size of 420mm x 115mm x 1500mm, 200mm x 200mm x 700mm and 200mm x 300mm x 700mm were wrapped with the FRP system with 3 horizontal wrapping and tested to verify the effectiveness of FPR wrapping. The theoretical calculation by computer model were also performed to estimate the strength gain for comparison with testing results. The results showed that the FRP wrapping for this type of columns can increase the ultimate strength by an average of 31.8%, with a minimum of 24.4% and a maximum of 37.5%.

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Periodical:

Advanced Materials Research (Volume 1129)

Pages:

353-360

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1129.353

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Online since:

November 2015

Authors:

Jin Ping Lu*, Kang Hai Tan, David Zheng

Keywords:

Column Stump, Compressive Strength, Concrete Structure Rehabilitation, Fibre Reinforced Polymer, Glass Fiber

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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