Journal ArticleDOI
Analysis of crack propagation due to rebar corrosion using RBSM
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In this article, a three-dimensional Rigid Body Spring Method (RBSM) combined with a three phase material corrosionexpansion model is proposed to simulate crack propagation due to rebar corrosion.Abstract:
Cracking behavior due to rebar corrosion in concrete specimens having a single rebar is evaluated experimentally and analytically. In the experiments, in which corrosion was induced electronically, the propagation of cracks (including internal crack patterns and surface crack widths) was monitored. In addition, deformation of the specimen surface was measured using a laser displacement meter. In the analysis, a three-dimensional Rigid-Body-Spring Method (RBSM), combined with a three-phase material corrosion–expansion model, is proposed to simulate crack propagation due to rebar corrosion. The effects of the properties of corrosion products such as elastic modulus, penetration of corrosion products into cracks, and local corrosion after cracking of the concrete are investigated. Cracking behavior due to rebar corrosion is simulated reasonably well. The simulations using RBSM provide insight into the mechanisms of crack initiation and propagation due to rebar corrosion.read more
Citations
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Cracking of the concrete cover due to reinforcement corrosion: A two-dimensional lattice model study
TL;DR: In this paper, a two-dimensional lattice model was implemented to study cracking mechanisms due to reinforcement corrosion, and two pitting scenarios were tested and compared to the uniform corrosion case.
Journal ArticleDOI
Modeling the cracking of cover concrete due to non-uniform corrosion of reinforcement
TL;DR: In this article, the effect of non-uniform corrosion on the cracking behavior of cover concrete is explored, and the influence of meso-structural heterogeneities and the porous layer generated at the rebar/concrete interface on the failure patterns and the corrosion level of covercrete is considered.
Journal ArticleDOI
A non-uniform corrosion model and meso-scale fracture modelling of concrete
TL;DR: In this paper, a meso-scale fracture model based on non-uniform corrosion expansion is proposed for the cases of both middle and side reinforcing bars, which can be used to express the realistic corrosion rust progression around the reinforcing bar with the best accuracy.
Journal ArticleDOI
Crack patterns of concrete with a single rebar subjected to non-uniform and localized corrosion
TL;DR: In this article, the effects of corrosion distribution, specifically non-uniform and localized corrosion, on cracks propagation in concrete were investigated, where different corrosion distributions along rebar length were simulated using a sodium chloride pond with various sizes set on the concrete cover.
References
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Journal ArticleDOI
Cover cracking as a function of bar corrosion: Part I-Experimental test
TL;DR: In this article, some preliminary experiments are reported in which small reinforced beams are artificially corroded by an impressed current, and the amount of current and loss of bar cross-section needed to induce the crack at the surface are monitored, together with the evolution of crack width, by the use of strain gauges applied to the surface of the specimens.
Journal ArticleDOI
Deterioration of concrete due to reinforcement steel corrosion
TL;DR: In this article, the effects of corrosion rate on cracking and bond strength loss were investigated using laboratory data to investigate the influence of fly ash on the rate of reinforcement corrosion, and the laboratory data was used to develop numerical models to predict: 1. (a) rate of corrosion from the width and intensity of cracking 2. (b) bond stress from corrosion rate, and 3. (c) serviceability loss from corrosion rates.
Journal ArticleDOI
Fracture analyses using spring networks with random geometry
John E. Bolander,Saito Shinya +1 more
TL;DR: In this paper, a method for rendering ordinary beam-spring networks elastically uniform is also given for predicting brittle fracture in homogeneous, isotropic materials, based on Voronoi diagrams with random geometry.
Journal ArticleDOI
Experimental and Numerical Investigation of Corrosion-Induced Cover Cracking in Reinforced Concrete Structures
Dimitri V. Val,Dimitri V. Val,Dimitri V. Val,Leonid Chernin,Leonid Chernin,Leonid Chernin,Mark G. Stewart,Mark G. Stewart,Mark G. Stewart +8 more
TL;DR: In this paper, a comparison of finite element model results and experimental data is used to estimate the amount of corrosion products penetrating into concrete pores and cracks, which is an essential parameter for prediction of corrosion initiation and propagation.
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