A methodology is introduced to predict the mechanical behaviour of reinforced concrete structures with an observed amount of frost damage at a given time. It is proposed that the effects of internal frost damage and surface scaling can be modelled as changes of material and bond properties, and geometry, respectively. These effects were studied and suggestions were made to relate the compressive strength and dynamic modulus of elasticity, as the indicators of damage, to the response of the damaged concrete in compression and tension, and to the bond behaviour. The methodology was applied to concrete beams affected by internal frost damage, using non-linear finite element analyses. A comparison of the results with available experimental data indicated that the changes in failure mode and, to a rather large extent, the effect on failure load caused by internal frost damage can be predicted. However, an uncertainty was the extension and distribution of the damaged region which affected the prediction of the load capacity.
Related Content
Steel-fibre reinforced concrete for elements failing in bending and in shear
Discrete steel fibres can increase significantly the bending and the shear resistance of concrete structural elements when Steel Fibre Reinforced Concrete (SFRC) is designed in such a way that fibre-reinforcing mechanisms are optimised. To assess the fibre reinforcement effectiveness in shallow s...


Long-term seismic performance of RC structures in an aggressive environment: emphasis on bridge piers
Even though accurate structural models have been developed for the performance of corroded structures subjected to monotonic flexure and/or shear, studies on seismic performance that include corrosion damage are scarce. For the lifetime assessment of structures in aggressive environments and eart...
Critical Analysis of Fibre-Reinforced Polymer Near-Surface Mounted Double-shear Pull-out Tests
The study of the bond behaviour between fibre-reinforced polymer (FRP) systems and concrete is an issue that nowadays attracts many researchers. The scientific community dedicated to the research of FRP reinforcement has been conducting numerous experimental programmes aiming to assess the local ...


Seismic finite element simulation of concrete piles in harbour landing stages
Seven reduced-scale prestressed concrete (PC) pile specimens for landing stages simulating four levels of corrosion were tested to investigate their structural cyclic lateral load-carrying behaviour. Three corroded specimens were repaired using fiber-reinforced polymer (FRP) jacketing before test...
Application of thermo-hydro-chemo-mechanical model for early age behaviour of concrete to experimental massive reinforced structures with strain–restraining system
This paper presents the application of a thermo-hydro-chemo-mechanical (THCM) model to the design of actual massive structures with a system to restrain the strain at early age (thermal strains and autogenous shrinkage). The experimental campaign was performed in the French national project CEOS....

Three-dimensional modelling of structural effects of corroding steel reinforcement in concrete
The effect of corrosion products flowing through cracks becomes significant when large corrosion penetrations take place in reinforced concrete structures and wide cracks develop; this is favourable, as it decreases the splitting stress around the bar. The effect becomes more important when the c...
Probabilistic failure modelling of reinforced concrete structures subjected to chloride penetration
Structural durability is an important criterion that must be evaluated for every type of structure. Concerning reinforced concrete members, chloride diffusion process is widely used to evaluate durability, especially when these structures are constructed in aggressive atmospheres. The chloride in...

New modelling and analysis methods for concrete armour unit systems using FEMDEM
Rubble mound breakwaters armoured with concrete units rely on collective behaviour between adjacent concrete armour units but existing largely empirical approaches have been unable to provide a detailed understanding of how these gigantic granular systems work. The problem has been that current m...
Soft projectile impacts analysis on thin reinforced concrete slabs: Tests, modelling and simulations
Numerical simulations of reinforced concrete structures subjected to high velocity impacts and explosions remain a difficult task today. For 1 years and more now, the CEA-Gramat has maintained a continuous research effort with the help of different French universities in order to overcome encount...

Advanced simulation of damage of reinforced concrete structures under impact
The efficiency of the discrete element method for studying the fracture of heterogeneous media has been demonstrated, but it is limited by the size of the computational model. A coupling between the discrete element and the finite element methods is proposed to handle the simulation of impacts on...