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probabilistic carbonation simulations in concrete based on

probabilistic carbonation simulations in concrete based on

Probabilistic Carbonation Simulations in Concrete Based on ...

The aim of this paper is the evaluation of concrete carbonation depth from a probabilistic analysis, focusing specifically on the study of the marble powder diameters randomness effect on the reinforced concrete carbonation. Monte Carlo simulations are realized under the assumption that the marble powder diameter (Dmp) is random variable with a log-normal probability distribution.

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Carbonation process simulation for cement-based materials ...

Oct 30, 2020  1. Introduction. Concrete carbonation is one of the major reasons for the deterioration of concrete structures under atmospheric conditions. Carbon dioxide (CO 2) in the ambient air diffuses into concrete and reacted with the hydrates, leading to the pH drop in pore solution of the concrete cover.Corrosion of steel bars may be initiated when the pH value on the steel surface falls below 11.5 .

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(PDF) CARBONATION INDUCED CORROSION ANALYSIS OF

5.0 CONCLUSION Numerical carbonation depth simulations based on the full probabilistic design approach have been carried out. Some Indonesian tropical climate parameters and concrete material properties from the Indonesian standard (SNI) have been provided during the simulations.

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Accelerated carbonation tests for the probabilistic ...

Sep 15, 2014  Hence, the carbonation model was used in a probabilistic context for a dual purpose: to support a durability design for a concrete structure and to estimate the time of exposure in the carbonation chamber, with a given probability for the cover to

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Probabilistic Analysis of the Carbonation of a Concrete ...

The durability design becomes widely used to assess the service life of concrete structures. It is really demanded that a simulation model can resemble the real performance of concrete during the service life. This paper investigates the concrete ... Probabilistic Analysis of the Carbonation of a Concrete Structure in Indonesian Tropical Climate.

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(PDF) CARBONATION INDUCED CORROSION ANALYSIS OF

It is really encouraged that a simulation model can resemble the real performance of concrete during the service life. This paper investigates the concrete carbonation through probabilistic analysis.

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Carbonation process simulation for cement-based materials ...

Oct 30, 2020  1. Introduction. Concrete carbonation is one of the major reasons for the deterioration of concrete structures under atmospheric conditions. Carbon dioxide (CO 2) in the ambient air diffuses into concrete and reacted with the hydrates, leading to the pH drop in pore solution of the concrete cover.Corrosion of steel bars may be initiated when the pH value on the steel surface falls below 11.5 .

get price

Prediction of Service Life and Evaluation of Probabilistic ...

Oct 10, 2020  Existing carbonation models predict the service life based on deterministic theories. In this study, deterministic and probabilistic methods are applied to study concrete carbonation in the presence of repair materials using the maintenance periods and repair cost according to the coefficient of variation (COV) of the carbonation depth of each ...

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Water/Cement Ratio Randomness Effect on Reinforced ...

reinforcement from a probabilistic analysis, focusing specifically on the study of the randomness effect of the Water /Cement ratio on the reinforced concrete carbonation. Monte Carlo simulations are realized under the assumption that the Water /Cement ratio is aggressiverandom variable

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PROBABILISTIC ANALYSIS OF THE DURABILITY OF A

The proposed application of the Simulation-Based Reliability Assessment (SBRA) method, documented in [1], [2], [3]) demonstrates an analysis of the durability of a reinforced concrete beam weakened due to carbonation of the concrete and corrosion of the reinforcement. A combination of three time-dependent load effects represented

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Carbonation Scientific.Net

Probabilistic Carbonation Simulations in Concrete Based on Marble Powder Authors: Azhar Badaoui Abstract: The aim of this paper is the evaluation of concrete carbonation depth from a probabilistic analysis, focusing specifically on the study of the marble powder diameters randomness effect on the reinforced concrete carbonation.

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Probabilistic Service Life Analysis of GGBFS Concrete ...

Jun 30, 2020  Abstract. Carbonation is a deterioration which degrades structural and material performance by permitting CO 2 and corrosion of embedded steel. Service life evaluation through deterministic method is conventional, however the researches with probabilistic approach on service life considering loading and cold joint effect on carbonation have been performed very limitedly.

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ESTIMATION OF NORMAL DISTRIBUTION PARAMETERS AND

Abstract. Taking carbonation depth uncertainty into account is key to ap-proach durability analysis of concrete girder bridges in a probabilistic way. The Normal distribution has been widely used to represent the probability distri-bution of carbonation depth.

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Assessment of Durability of Concrete Structure Subject to ...

May 27, 2018  A reliability-based method for identifying appropriate safety factors for use in predicting the service life (i.e., corrosion-free life) of concrete structures subject to carbonation is described in this paper. Reinforced concrete (RC) columns located in CO2-rich urban environments were investigated to estimate their service life. Carbonation depths and cover depths were measured ...

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Review Article Probabilistic Evaluation of Service Life ...

models based on probability or statistical concepts such as probability function, reliability based models, Monte Carlo simulation, Markov chain methods, and fuzzy logic. In probablistic analysis three steps can be distinguished: (a) de nition of failure modes (limit states) and corresponding models, (b) quanti cation of the statistics of the ...

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Prediction of Repairing Time for RC Columns ... - concrete

The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design ...

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Durability Limit States of Concrete Structures ...

T 43, Durability Limit States of Concrete Structures: Probabilistic Modeling, D. Matesová et al. (i) Carbonation models introduced herein are based on the diffusion of CO 2 in the pore system of concrete and have been discussed in [Teplý et al. 2005, 2008]. Both, the carbonation of concretes

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A methodology to evaluate corroded RC structures using a ...

Apr 19, 2021  04/19/21 - Several aspects influence corrosive processes in RC structures, such as environmental conditions, structural geometry, and mechani...

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(PDF) A neural network method for analysing concrete ...

In comparison to tradi- model based on a Monte Carlo simulation has been tional methods, ANNs tolerate relatively imprecise, developed.19,27 A probabilistic-based durability analysis noisy or incomplete data: approximate results are less has been applied for obtaining a more controlled dur- vulnerable to outliers, have better filtering capacity ...

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The effect of carbonation after demolition on the life ...

incorporation of carbonation after demolition into a comparative life cycle assessment between asphalt and concrete pavement is used to better predict the pavement ...

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Probability-Based_Concrete_Carbonation_Prediction_.pdf ...

Recently, probability ‐ based durability analyses have been introduced to precisely estimate the carbonation of concrete structures. Since the carbonation of concrete structures, however, can be affected by material compositions as well as various environmental conditions, it is still a challenge to predict concrete carbonation in the field.

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Prediction of Service Life and Evaluation of Probabilistic ...

Oct 10, 2020  Existing carbonation models predict the service life based on deterministic theories. In this study, deterministic and probabilistic methods are applied to study concrete carbonation in the presence of repair materials using the maintenance periods and repair cost according to the coefficient of variation (COV) of the carbonation depth of each ...

get price

PROBABILISTIC ANALYSIS OF THE DURABILITY OF A

The proposed application of the Simulation-Based Reliability Assessment (SBRA) method, documented in [1], [2], [3]) demonstrates an analysis of the durability of a reinforced concrete beam weakened due to carbonation of the concrete and corrosion of the reinforcement. A combination of three time-dependent load effects represented

get price

Bayesian Belief Network to Assess Carbonation-Induced ...

Jun 26, 2007  This paper proposes a probabilistic-based model for carbonation-induced corrosion based on a Bayesian belief network. The proposed model is compared with a more traditional probabilistic-based technique, Monte Carlo simulation. Both methodologies are illustrated through two case studies and similarities and differences are highlighted.

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Prediction of Durability for RC Columns with Crack and ...

Joint under Carbonation Base d on Probabilistic Approach Seung-Jun Kwon 1) and Ung-Jin Na 2) (Received August 16, 2010, Revised April 22, 2010, Accepted June 17, 2011) Abstract Carbonation in RC (reinforced concrete) structure is considered as one of the most critical deteriorations in urban cit-ies.

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Durability Limit States of Concrete Structures ...

T 43, Durability Limit States of Concrete Structures: Probabilistic Modeling, D. Matesová et al. (i) Carbonation models introduced herein are based on the diffusion of CO 2 in the pore system of concrete and have been discussed in [Teplý et al. 2005, 2008]. Both, the carbonation of concretes

get price

CARBONATION INDUCED CORROSION ANALYSIS OF

The assessment of the service life of concrete structures using the durability design approach is widely accepted nowadays. It is really encouraged that a simulation model can resemble the real performance of concrete during the service life. This paper investigates the concrete carbonation through probabilistic analysis. Data regarding Indonesian construction practice were taken from ...

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Reliability Assessment of a Reinforced Concrete Beam ...

reduction in flexural capacity, shear capacity and cumulative probability of failure (CPF) versus time. The goal of this article is to compare the French Reinforced Concrete design code [3] with reliability calculus. The simulations compare, at one hand, the ultimate load of a sound beam and, on the other hand, a beam subjected to different

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Durability Limit States of Concrete Structures ...

The mathematical models of processes relevant for the initiation periode concern the concrete carbonation and chloride ions ingress. (i) Carbonation models introduced herein are based on the diffusion of CO2 in the pore system of concrete and have been discussed in [Teplý et al. 2005, 2008]. Both, the carbonation of concretes from

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A methodology to evaluate corroded RC structures using a ...

Apr 19, 2021  04/19/21 - Several aspects influence corrosive processes in RC structures, such as environmental conditions, structural geometry, and mechani...

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Top PDF A probabilistic approach for assessing concrete ...

A probabilistic approach for assessing concrete degradation due to leaching The work presented here performed within an ANR project (the French National Agency for Research) named APPLET, a part of which aims at taking into account the variability of the material in the assessment of long-term behaviour of concrete structures.

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Probabilistic failure modelling of reinforced concrete ...

Dec 10, 2012  In this paper, a coupled model based on mechanical behavior simulation and reliability algorithms is developed in order to allow probabilistic analyses of reinforced concrete structures subjected to chloride ingress. This model aims at quantifying the probability of corrosion start in reinforced concrete structures based on reliability algorithms.

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Analysis of Climate Change Impacts on the Deterioration of ...

change. (The probability is represented by decimal numbers) 51 Figure 4-6 Carbonation depth, probability of carbonation-induced corrosion initiation and damage and mean rebar loss of concrete structures of a column (L5) in a tropical climate zone, with the effect of climate change in comparison with the baseline in the absence of climate change.

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Reliability/risk assessment of concrete structures ...

developed for realistic simulation of reinforced concrete structures. It is based on the finite element method with non-linear material models, and utilized for analysis of beams and girders, plates and shells, bridges, tunnels, dams, composite structures, strengthenings, structural details,

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