Cement mortar cracking under accelerated steel corrosion test: A mechanical and electrochemical model
نویسندگان
چکیده
Corrosion of the embedded steel is one main degradation problems limiting service life reinforced and pre-stressed concrete structures. A model able to provide approximate predictions evolution cracking process can be useful for designing accelerated corrosion tests cement mortar or specimens. An electrochemical has been used describing inner displacements strains caused by accumulation products around rebar during electrically specimens with simple geometries. Subsequently, a mechanical using XFEM-Based Crack Growth Simulation module Ansys Software, implemented describe distribution stresses in cross-section The combined led acceptable time appearance first surface crack width over time. This model, which needs only data few experimental parameters, uses readily accessible standard software, could easily other configurations. For more realistic description tensile whole process, must consider initiation several cracks, at least eight, perimeter. inclusion higher number cracks increases greatly computation effort, may lead convergence difficulties.
منابع مشابه
ELECTROCHEMICAL NOISE ANALYSIS OF 70-30 BRASS DURING STRESS CORROSION CRACKING TEST IN MATTSON S SOLUTION
An investigation of the electrochemical noise generation during Stress Corrosion Cracking (SCC) of 70-30 Brass in Mattson's solution was conducted. The fluctuations of potential and current were monitored. The relationship between potential and current fluctuations has been evaluated in time domain and the obtained data has been analyzed in the frequency domain using Power Spectral Density (PSD...
متن کاملStainless steel pitting and early-stage stress corrosion cracking under ultra-low elastic load
متن کامل
Acoustic Emission during Stress Corrosion Cracking Test
AE monitoring from various types of stress corrosion cracking (SCC) has been conducted for the past 15 years in our laboratory. This paper discusses AE results of active-path dissolution-type SCC of austenitic stainless steel in chloride solution and fused salt, fluoride and polythionic acid solutions, brass in ammonia (Mattosson's solution), and carbon steels in nitrite solution. Transgranular...
متن کاملA Continuum Damage Model for the Stress Corrosion Cracking of Austenitic Stainless Steel
In the present work, the mechanical behavior of stress corrosion cracking phenomenon is described. Such phenomenon presents strong complexity due to metallurgic and electrochemical aspects. A methodology for modeling both SSR (Slow Strain Rate) and CL (Constant Load) tests based upon thermodynamics of continuum solids and elastoplastic damage is proposed. In this macroscopic approach, besides t...
متن کاملAn Investigation on Corrosion and Stress Corrosion Cracking initiation of a Ferritic Stainless Steel in a Tertiary Amine Solution
The present study focused on stress corrosion cracking (SCC) and corrosion behavior of ferritic stainless steel (grade 430) in activated methyl diethanolamine (aMDEA) solution, which is classified as a tertiary amine. In this regard, cyclic polarization and U-bend tests were performed in CO2 loaded aMDEA with different concentrations at 25 and 70 °C to observe corrosion behavior and ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Electroanalytical Chemistry
سال: 2021
ISSN: ['1873-2569', '1572-6657']
DOI: https://doi.org/10.1016/j.jelechem.2021.115222