Optimal Maintenance Plan for RC Members by Minimizing Life-Cycle Cost Including Deterioration Risk Due to Carbonation

Chiu, Chien‐Kuo; Noguchi, Takafumi; Kanematsu, Masayuki

doi:10.3151/jact.6.469

Cited by 18 publications

(5 citation statements)

References 16 publications

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“…Using standard cumulative function, time to reach 10% probability of corrosion initiation can be computed. From the time to reach 10% probability of corrosion initiation repair and maintenance works can be foreseen based on the w/c ratio of the structure in Bern and Seoul environmental condition [31]. Computing reliability index using mean, standard deviation, coefficient of variation and from there on computation of probability of corrosion initiation can be helpful in foreseeing strategic maintenance works if any.…”

Section: Results and Discussion On Reliability Conceptmentioning

confidence: 99%

Spatial Time Dependent Reliability Analysis of Carbonation with Climate Change

Kannan¹,

Sudalaimani²

2020

Pol. J. Environ. Stud.

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The ambiance around the concrete structures could be affected by a dynamic climate, particularly after a long time, results in declination of durability at a quicker rate. The increase in carbon dioxide concentration and temperature can increase the carbonation depth of concrete. Carbonation-induced corrosion of concrete structures in Bern and Seoul under a dynamic climate is investigated during this work by considering high and medium greenhouse gas emissions scenarios RCP 8.5 and RCP 4.5 respectively. This analysis takes into account the effect of change in temperature, carbon dioxide levels and relative humidity on diffusion coefficients considering relative humidity as a time-dependent variable. This work also evaluates the failure probability of durability based on the reliability concept by considering the coefficient of variation of carbonation depth and cover depth. Reliability index of 1.28 which infers the probability of corrosion initiation less than 10% is used for inference.

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Section: Results and Discussion On Reliability Conceptmentioning

confidence: 99%

Spatial Time Dependent Reliability Analysis of Carbonation with Climate Change

Kannan¹,

Sudalaimani²

2020

Pol. J. Environ. Stud.

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“…A rational approach to LCC analysis considers all costs incurred over the lifetime of a structure, ranging from those associated with initial construction to those related to maintenance, repair, and final deconstruction. While most studies assessing LCCs of bridges have emphasized the importance of maintenance and repair strategies (Kong andFrangopol 2003, Frangopol andLiu 2007), others have addressed the effects of extreme events on the LCCs of a structure (Takahashi et al 2004, 2006, Chiu et al 2008. Additionally, the economic cost-benefit ratio has been incorporated in decision analysis for seismically retrofitted structures.…”

Section: Introductionmentioning

confidence: 98%

Optimal design base shear forces for reinforced concrete buildings considering seismic reliability and life-cycle costs

Chiu

Jean

Chuang

2013

Journal of the Chinese Institute of Engineers

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2013) Optimal design base shear forces for reinforced concrete buildings considering seismic reliability and life-cycle costs, Journal of the Chinese Institute of Engineers, 36:4, 458-470,The objective of this study is to propose a novel estimation procedure for optimal design base shear forces for reinforced concrete (RC) buildings while considering the seismic reliability and life-cycle costs (LCCs) incurred by life-cycle earthquake events. By simulating life-cycle earthquake events within a specified period and using nonlinear dynamic analysis, including earthquake occurrences and their peak ground accelerations (PGAs), this study also derives the damage states of an RC building considering the effect of the cumulative damage. Additionally, besides life-cycle earthquake events, a simplified model is developed to modify the structural properties of a structure without seismic repair after earthquakes. Given the uncertainty of the occurrence time and PGAs of earthquake events, the seismic reliability, and expected current values of LCCs are calculated using Monte Carlo simulation. Although the case study addresses only an RC building with five stories in Taipei, optimal design base shear forces for low-rise RC buildings calculated via the same procedure can be derived and utilized when making decisions on the seismic level of a building based on safety and economic considerations. Therefore, the proposed method can help both owners and investors to identify LCCs of RC buildings due to seismic structural damage within a specified service life.

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“…However, only few studies have developed life-cycle maintenance strategies for RC structures in corrosive environments with high seismic hazard to decrease the LCCs and losses induced by safety and serviceability failures occurring during earthquakes (Chiu, Noguchi, & Kanematsu, 2008;Kumar, Gardoni, & SanchezSilva, 2009). Therefore, demand for a system that can identify the life-cycle maintenance strategies for RC structures based on reductions of the LCCs, including losses due to earthquakes and corrosion, has increased.…”

Section: Introductionmentioning

confidence: 98%

Analysis of lifetime losses of low-rise reinforced concrete buildings attacked by corrosion and earthquakes using a novel method

Chiu

Chi

2013

Structure and Infrastructure Engineering

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In the estimation of the losses caused by an earthquake for a reinforced concrete (RC) building, the effect of corrosion of the reinforcing steel incurred by environmental conditions, e.g. carbonation and chloride ions, is seldom mentioned because of the corrosion with uncertainty and time dependence. However, because the structural capacity of a corroded RC building declines over time, one must apply an appropriate method that estimates the structural capacity of an RC building in a corrosive environment. Therefore, this work integrated degradation factors into the structural properties of a corroded RC building. Additionally, by considering life-cycle earthquake events, lifetime losses resulting from earthquakes and corrosion can be derived. This work can help both owners and investors to identify lifetime losses of RC buildings due to seismic structural damage, including the corrosion effect, within a specified service life. Although the case study only addresses a selection of the most appropriate concrete cover depth for an RC building corroded by chloride ions, the proposed procedure can be utilised when making decisions about whether to prevent building deterioration based on economic considerations.

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Optimal Maintenance Plan for RC Members by Minimizing Life-Cycle Cost Including Deterioration Risk Due to Carbonation

Cited by 18 publications

References 16 publications

Spatial Time Dependent Reliability Analysis of Carbonation with Climate Change

Spatial Time Dependent Reliability Analysis of Carbonation with Climate Change

Optimal design base shear forces for reinforced concrete buildings considering seismic reliability and life-cycle costs

Analysis of lifetime losses of low-rise reinforced concrete buildings attacked by corrosion and earthquakes using a novel method

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