Browsing by Author "Aravinda, MD"
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- item: Conference-AbstractFE Modeling of CFRP strengthened concrete beam exposed to cycle temperature, humidity and sustained loading(2016-05-11) Bandara, HRCS; Gamage, JCPH; Aravinda, MD; Weerakon, SDNeed for strengthening of civil engineering structures has been growing in recent linn", due to many reasons such as improper design, increased loading and environmental deterioration. Use of Carbon Fiber Reinforced Polymers (CFRP) has become a most promising and affordable solution for strengthening of structures due to their superior properties. The major challenge of this composite application in outdoor structures is the long term durability of the bond between CFRP sheet and the concrete substrate. Therefore, the understanding of performance of this system in different service conditions is very important. A finite element model was developed to simulate the behaviour of CFRP strengthened concrete beams. The short term and long term behavior of a composite member was predicted and validated with experimental results. The results showed that the bond between CFRP and concrete is sensitive to the environmental conditions, such as temperature and humidity fluctuations.
- item: Conference-Full-textFE modeling of CFRP strengthened concrete beam exposed to cyclic temperature humidity and sustain loading(Department of Civil Engineering, University of Moratuwa, 2011-12) Bandara, HRCS; Gamage, JCPH; Aravinda, MD; Weerakoon, SD; Ratnayake, NNeed for strengthening of civil engineering structures has been growing in recent times due to many reasons such as improper design, increased loading and environmental deterioration. Use of carbon fiber Reinforced Polymers (CFRP) has become a most promising and affordable solution for strengthening of structures due to their superior properties. The major challenge of this composite application in outdoor structures is the long term durability of the bond between CFRP sheet and the concrete substrate. Therefore, the understanding of performance of this system in different service conditions is very important.
- item: Conference-Full-textPerformance of CFRP strengthened concrete beam subjected to cyclic temperature(2013-12-06) Bandara, HRCS; Aravinda, MD; Weerakon, SD; Gamage, JCPHThe use of Carbon Fiber Reinforced Polymers (CFRP) for strengthening of structurally deficient reinforced concrete structures is widely gaining appeal. There are many applications in outdoor structures such as bridges. These structures are directly exposed to the environment. Epoxy adhesive used to create the bond between CFRP and concrete is very sensitive to the elevated temperature. It is important to explore the behavior of CFRP strengthened concrete structures under long term exposure to cyclic temperature because of the direct exposure of these structures even for the daily temperature fluctuations. A numerical model was developed to simulate the behavior of CFRP strengthened concrete beam subjected to four point bending. Initially, the composite beam was analysed to evaluate the short term performance and validated with experimental results. Then, the simulations were extended to determine the deterioration of load bearing capacity of the beam under long term exposure to cyclic temperature.