Use of NSM FRP for the strengthening of a bridge deck - a case study

Author(s): Alejandro Perez Caldentey
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials Systems and Structures (SMSS2019) Durability, Monitoring and Repair of Structures
Editor(s): Ana Baričević, Marija Jelčić Rukavina, Domagoj Damjanović, Maurizio Guadagnini
ISBN: 978-2-35158-217-6
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 724-731
Total Pages: 848
Language: English

Abstract: The Park Central Drive Bridge is part of the LBJ Expressway located North of the city of Dallas. During the second widening of the structure, in 2013, it was decided to reinforce the existing 1960's bridge with an overlay to account for the increase in traffic loads. A bonding agent was used to help bond the new overlay with the existing concrete. However, this bonding
agent did not work properly and created a discontinuity surface which has resulted in the progressive destruction of the overlay due to the intense traffic on the bridge and the need to execute emergency repairs.
To solve the problem FHECOR Consulting Engineers first made a diagnosis of the problem and proposed an innovative repair procedure based on reinforcing the overlay with carbon fibre strips inserted into vertical grooves sawed on the deck. This solution has been partially implemented and has allowed to minimize traffic disruption and environmental impact when compared with other more traditional repair possibilities

Online publication :2019
Publication type : full_text
Public price (Euros) : 00