Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effects of water immersion on the bond behavior between CFRP plates and concrete substrate
https://orcid.org/0000-0002-8540-2580
Highlights The adhesive layer thickness and immersion affect the CFRP-concrete bond remarkably. The water diffusion in multi-material systems was modeled by FEM. The adhesive-concrete bond is susceptible to the moisture ingress.
Abstract Effects of water immersion on the behavior of bond between CFRP plates and concrete substrate were experimentally investigated and analytically modeled. The finite element method was used to simulate the distribution of the moisture content in the interfacial zone. Single lap shear test results showed that water immersion decreases the maximum bond stress, bond capacity, and fracture energy as well as the maximum slip. Increasing the immersion time led to more moisture uptake in the adhesive layers, and more degradation of the bonding properties. The thickness of the adhesive layers (i.e., 0.2mm and 1mm) affects the bonding properties and the resistance to the water immersion. The thinner the adhesive layer, the higher moisture content is found at the adhesive/concrete interface. Water immersion altered the debonding mode from cohesive concrete fracture to adhesive separation from the concrete substrate, which was attributed to the weakening of the bonding strength between silica and epoxy adhesive due to moisture ingress.
Effects of water immersion on the bond behavior between CFRP plates and concrete substrate
https://orcid.org/0000-0002-8540-2580
Highlights The adhesive layer thickness and immersion affect the CFRP-concrete bond remarkably. The water diffusion in multi-material systems was modeled by FEM. The adhesive-concrete bond is susceptible to the moisture ingress.
Abstract Effects of water immersion on the behavior of bond between CFRP plates and concrete substrate were experimentally investigated and analytically modeled. The finite element method was used to simulate the distribution of the moisture content in the interfacial zone. Single lap shear test results showed that water immersion decreases the maximum bond stress, bond capacity, and fracture energy as well as the maximum slip. Increasing the immersion time led to more moisture uptake in the adhesive layers, and more degradation of the bonding properties. The thickness of the adhesive layers (i.e., 0.2mm and 1mm) affects the bonding properties and the resistance to the water immersion. The thinner the adhesive layer, the higher moisture content is found at the adhesive/concrete interface. Water immersion altered the debonding mode from cohesive concrete fracture to adhesive separation from the concrete substrate, which was attributed to the weakening of the bonding strength between silica and epoxy adhesive due to moisture ingress.
Effects of water immersion on the bond behavior between CFRP plates and concrete substrate
https://orcid.org/0000-0002-8540-2580
Highlights The adhesive layer thickness and immersion affect the CFRP-concrete bond remarkably. The water diffusion in multi-material systems was modeled by FEM. The adhesive-concrete bond is susceptible to the moisture ingress.
Abstract Effects of water immersion on the behavior of bond between CFRP plates and concrete substrate were experimentally investigated and analytically modeled. The finite element method was used to simulate the distribution of the moisture content in the interfacial zone. Single lap shear test results showed that water immersion decreases the maximum bond stress, bond capacity, and fracture energy as well as the maximum slip. Increasing the immersion time led to more moisture uptake in the adhesive layers, and more degradation of the bonding properties. The thickness of the adhesive layers (i.e., 0.2mm and 1mm) affects the bonding properties and the resistance to the water immersion. The thinner the adhesive layer, the higher moisture content is found at the adhesive/concrete interface. Water immersion altered the debonding mode from cohesive concrete fracture to adhesive separation from the concrete substrate, which was attributed to the weakening of the bonding strength between silica and epoxy adhesive due to moisture ingress.
Effects of water immersion on the bond behavior between CFRP plates and concrete substrate
Pan, Yunfeng (Autor:in) / Xian, Guijun (Autor:in) / Silva, Manuel A.G. (Autor:in)
Construction and Building Materials ; 101 ; 326-337
18.10.2015
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Water immersion , Bond , Interfaces , Moisture diffusion , Concrete , CFRP
Effects of water immersion on the bond behavior between CFRP plates and concrete substrate
| British Library Online Contents | 2015
| British Library Online Contents | 2018
Study on Bond Behavior Between CFRP Sheets and Reinforced Concrete
| British Library Conference Proceedings | 1994