Time-Dependent Reliability of Reinforced Concrete Considering Chloride Penetration via Boundary Element Method
| Autor: | Henrique M. Kroetz, Giovanni Pais Pellizzer, Edson Denner Leonel, André Teófilo Beck |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Monte Carlo method Aerospace Engineering 020101 civil engineering Ocean Engineering 02 engineering and technology Chloride 0201 civil engineering Corrosion ESTRUTURAS 0203 mechanical engineering medicine General Materials Science Diffusion (business) corrosion time-dependent reliability Boundary element method Reliability (statistics) Civil and Structural Engineering Structural material business.industry Boundary Element Method Mechanical Engineering Process (computing) Structural engineering 020303 mechanical engineering & transports Mechanics of Materials Automotive Engineering business Reinforced Concrete medicine.drug |
| Zdroj: | Latin American Journal of Solids and Structures v.17 n.8 2020 Latin American journal of solids and structures Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) instacron:ABCM Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP Latin American Journal of Solids and Structures, Volume: 17, Issue: 8, Article number: e316, Published: 11 DEC 2020 |
| Popis: | STRENGTH DEGRADATION OF STRUCTURAL MATERIALS IS AN INEVITABLE PROCESS, DUE TO DELETERIOUS ACTIONS SUCH AS CORROSION AND FATIGUE. THESE PHENOMENA ARE ALSO TYPICALLY RANDOM, WITH DEGRADATION RATES AND STARTING TIME OF DEGRADATION PROCESS LARGELY UNCERTAIN. IN THE PARTICULAR CASE OF REINFORCED CONCRETE STRUCTURES, CORROSION OF REINFORCING BARS CAUSED BY CHLORIDE IONS IS ONE OF THE MAIN PATHOLOGICAL MANIFESTATIONS. PAST STUDIES ON THE TIME-VARIANT RELIABILITY OF REINFORCED CONCRETE STRUCTURES SUBJECT TO CORROSION HAVE RELIED ON SIMPLIFIED ANALYTICAL MODELS FOR ESTIMATING THE DEPASSIVATION TIME, I.E., THE TIME REQUIRED FOR CHLORIDE CONCENTRATION AT CONCRETE/STEEL INTERFACES TO BECOME CRITICAL. THIS STUDY CONTRIBUTES WITH AN ACCURATE MODELLING OF CHLORIDE DIFFUSION THROUGH CONCRETE USING THE BOUNDARY ELEMENT METHOD, WHICH IS EMPLOYED FOR THE FIRST TIME WITHIN A TIME-VARIANT RELIABILITY FRAMEWORK. CUMULATIVE FAILURE PROBABILITIES ARE EVALUATED IN TIME BY CONSIDERING RANDOM DEPASSIVATION TIMES, RANDOM CORROSION EVOLUTION, AND RANDOM LOAD PROCESSES. THE TIME-VARIANT RELIABILITY PROBLEM IS SOLVED USING MONTE CARLO SIMULATION. AN APPLICATION EXAMPLE IS PRESENTED, DEMONSTRATING THE CAPABILITIES OF THE PROPOSED FRAMEWORK. |
| Databáze: | OpenAIRE |
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