Characterization of concrete cracking due to corrosion of reinforcements in different environments

Aveldaño, Raquel R.; Ortega, Néstor F.

doi:10.1016/j.conbuildmat.2010.07.029

Cited by 35 publications

(20 citation statements)

References 9 publications

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“…(18)): (18) In the same time, the shrinkage ratio of concrete elastic modulus is 1.0: (19) The shrinkage ratios of the chloride ion erosion are deduced by the similarity criteria of Eq. (7): (20) The shrinkage ratios of chlorine ion concentration, boundary condition and initial condition between the similar test and the reality are the same at the corresponding time point. The shrinkage ratio of the test material properties is constant.…”

Section: T H E O R Y O F T H E S I M I L a R E X P E R I M E N T A L mentioning

confidence: 97%

“…Ishida [19] used the artificial climate method and numerical simulation to study the influence of O 2 concentration on durability of concrete and oxygen's diffusion process, considering that sufficient O 2 was prerequisite for steel corrosion. Aveldano et al [20] utilized the artificial climate method and the direct electrical method to study the rate of concrete reinforcement corrosion in different environments and the characteristics of concrete cracking due to corrosion product expansion, considering that the concrete itself was the main factor which affected the durability of concrete structures. After comparing the advantages and disadvantages of the artificial climate method and the constant current method, Yuan et al [21] considered that the reinforcement in specimens got from the constant current accelerated test was uniform corrosion while the specimens got from the artificial climate method was non-uniform corrosion, so the artificial climate method was closer to reality than the constant current accelerated test method.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical study of similar experimental method for durability of concrete under artificial climate environment

Tian

et al. 2016

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Based on the similarity theory, a new experimental method named Similar Experimental Method for Durability of Concrete (SEMDC) was established. The existing experimental methods for durability of concrete were summarized, and the merits and demerits of these experimental methods were analyzed. Major factors affecting the durability of concrete were found through literature review. These factors were analyzed and the similarity criteria were established according to the similarity theory, and then the SEMDC was established according to the rules of these criteria. The various influential factors of the experimental method were analyzed and the merits and demerits of this new experimental method were discussed. According to SEMDC, changing the geometry shrinkage ratio was the only way to accelerate the test in order to keep the experiment similar to the reality. There were few other parameters which need to be changed in SEMDC, making the test easy to be achieved. According to SEMDC, time shrinkage ratio was the square of geometric shrinkage ratio, so an appropriate increase of the geometric shrinkage ratio could accelerate the test. Finally, an example of experimental design for durability of concrete was devised theoretically base on SEMDC theory.

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Section: T H E O R Y O F T H E S I M I L a R E X P E R I M E N T A L mentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Theoretical study of similar experimental method for durability of concrete under artificial climate environment

Tian

et al. 2016

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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“…The corrosion cracks can also form on the concrete surface due to the formation of corrosion products which are in excessive volume than the base metal (steel reinforcement) causing the surrounding mass to exceed the tensile limit of the material (concrete). The appearance of cracks on the concrete surface provides a free Corrosion-club, 2004) entrance to the corrosive species to travel inside the concrete (Aveldano and Ortega, 2011). Reinforced concrete structures having surface cracks, located in places that receive snowfall can also undergo the freeze-thaw effect which leads to deeper cracks that might reach the surface of the rebar, and consequently, act as the free path to aggressive species.…”

Section: Influence Of Cracks On Corrosionmentioning

confidence: 99%

Corrosion Activity in Precast Concrete Elements and Cementitious Closure Pours

2015

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“…Therefore, the probability of chloride corrosion is higher. Chloride ions are one of the most aggressive agents for concrete structures (Aveldaño, Ortega 2011) and the worst conditions for deterioration caused by chloride attack are found in coastal areas (Takewaka et al 2003).…”

Section: Concrete Elementsmentioning

confidence: 99%

Analysis of the Degradation Condition of Secondary Schools. Case Study: Pavilions and Prefabricated Buildings

Barrelas

Brito

Correia

2016

Journal of Civil Engineering and Management

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Abstract. This paper presents the analysis of the degradation condition of secondary schools built between 1970 and 1990, in Portugal. The analysis is based on 15 case studies, mainly composed of several independent pavilions and typologically defined as "pavilion schools". The analysis of the data on the constructive defects, identified in detailed surveys of the case studies and registered in technical reports, involves the implementation of a suitable methodology. The methodology is based on the creation of a database where the contents of the survey reports can be gathered and organized. The system allows obtaining statistical results on the degradation condition of the case studies. The statistical analysis shows that the pathological condition of the buildings is a matter of great concern, considering the significant number of defects diagnosed. The highest level of severity mainly concerns defects on the buildings envelope, where concrete elements are the most affected ones. The degradation conditions of the case studies are mostly a consequence of the poor construction quality resulting from decisions made during design and construction. The economic constraints and the tight schedule concerning the expansion of secondary school facilities are also essential to understand the pathological condition of the buildings. The study presented in this paper contributes to the evolution of the methods and systems developed to support buildings' rehabilitation. The study presents innovative features related to the typology of the case studies (large secondary schools) and to the buildings' degradation condition.

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Characterization of concrete cracking due to corrosion of reinforcements in different environments

Cited by 35 publications

References 9 publications

Theoretical study of similar experimental method for durability of concrete under artificial climate environment

Theoretical study of similar experimental method for durability of concrete under artificial climate environment

Corrosion Activity in Precast Concrete Elements and Cementitious Closure Pours

Analysis of the Degradation Condition of Secondary Schools. Case Study: Pavilions and Prefabricated Buildings

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