TY - GEN
T1 - Strengthening of Reinforced Concrete Beams Using TRM at Elevated Temperatures
AU - Loo Chin Moy, Charles K.S.
AU - Revanna, Naveen
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.
PY - 2024
Y1 - 2024
N2 - Concrete structures reinforced with Fiber-Reinforced Polymer (FRP) face degradation under high temperatures or fire unless externally insulated. Textile Reinforced Mortars (TRMs) provide an alternative solution capable of avoiding the challenges of FRP epoxies at elevated temperatures. This study delves into the thermo-mechanical performance of reinforced concrete beams strengthened with Textile Reinforced Mortar in high-temperature environments. Basalt and Carbon textiles were used for reinforcement, with Carbon and Basalt TRMs applied in one-layer and one- and three-layer configurations, respectively. Specimens were heated to 200 °C, 400 °C, 600 °C, and 800 °C, followed by mechanical loading to assess flexural behaviour at those temperatures. Results indicated reduced flexural strength at higher temperatures, except at 400 °C. TRMs demonstrated resistance up to 600 °C, albeit with degradation of concrete and steel at this threshold. At 800 °C, Basalt textiles exhibited annealing, while carbon textiles oxidised within the TRM matrix. The study also examined the strengthened members’ thermal response and mechanical failure patterns under elevated temperatures.
AB - Concrete structures reinforced with Fiber-Reinforced Polymer (FRP) face degradation under high temperatures or fire unless externally insulated. Textile Reinforced Mortars (TRMs) provide an alternative solution capable of avoiding the challenges of FRP epoxies at elevated temperatures. This study delves into the thermo-mechanical performance of reinforced concrete beams strengthened with Textile Reinforced Mortar in high-temperature environments. Basalt and Carbon textiles were used for reinforcement, with Carbon and Basalt TRMs applied in one-layer and one- and three-layer configurations, respectively. Specimens were heated to 200 °C, 400 °C, 600 °C, and 800 °C, followed by mechanical loading to assess flexural behaviour at those temperatures. Results indicated reduced flexural strength at higher temperatures, except at 400 °C. TRMs demonstrated resistance up to 600 °C, albeit with degradation of concrete and steel at this threshold. At 800 °C, Basalt textiles exhibited annealing, while carbon textiles oxidised within the TRM matrix. The study also examined the strengthened members’ thermal response and mechanical failure patterns under elevated temperatures.
KW - Basalt and Carbon textiles
KW - Elevated temperatures
KW - Fibre Reinforced Polymer
KW - Textile Reinforced Mortar
KW - Thermal response
UR - http://www.scopus.com/inward/record.url?scp=85218004368&partnerID=8YFLogxK
U2 - 10.1007/978-3-031-80724-4_59
DO - 10.1007/978-3-031-80724-4_59
M3 - Conference Proceeding
AN - SCOPUS:85218004368
SN - 9783031807237
T3 - Lecture Notes in Civil Engineering
SP - 480
EP - 488
BT - 4th International Conference on Concrete Sustainability, ICCS 2024 - Volume 2
A2 - Barros, Joaquim A.O.
A2 - Cunha, Vítor M.C.F.
A2 - Sousa, Hélder S.
A2 - Matos, José C.
A2 - Sena-Cruz, José M.
PB - Springer Science and Business Media Deutschland GmbH
T2 - 4th fib International Conference on Concrete Sustainability, ICCS 2024
Y2 - 11 September 2024 through 13 September 2024
ER -