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Dr. Mahdi Kioumarsi
Oslo Metropolitan University, Norway

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Research Keywords & Expertise

0 Earthquake Engineering
0 Fiber Reinforced Concrete
0 Finite Element Analysis (FEA)
0 Service Life Prediction
0 corrosion of reinforcement

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Reinforced concrete structures
Finite Element Analysis (FEA)
finite element analysis of concrete structures
Fiber Reinforced Concrete

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Journal article
Published: 25 May 2021 in Construction and Building Materials
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This paper systematically reviewed 84 journal articles published from 2010 to 2020 and structured the reviewed literature using the following categories: year-wise number of research articles, journals, country, and citations. Through a bibliometric and content review analysis, the present review found that the existing studies have mostly focused on corrosion effects, and less attention was paid to quantifying seismic damage of corroded RC bridges. It is required to develop a damage assessment methodology for corroded RC bridges based on a reliable damage index, which can consider the cumulative effects of repeated loading cycles during earthquakes combining the impact of corrosion.

ACS Style

S. Mahboubi; M. Kioumarsi. Damage assessment of RC bridges considering joint impact of corrosion and seismic loads: A systematic literature review. Construction and Building Materials 2021, 295, 123662 .

AMA Style

S. Mahboubi, M. Kioumarsi. Damage assessment of RC bridges considering joint impact of corrosion and seismic loads: A systematic literature review. Construction and Building Materials. 2021; 295 ():123662.

Chicago/Turabian Style

S. Mahboubi; M. Kioumarsi. 2021. "Damage assessment of RC bridges considering joint impact of corrosion and seismic loads: A systematic literature review." Construction and Building Materials 295, no. : 123662.

Review article
Published: 16 April 2021 in Engineering Structures
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Cities in the developing world are facing outstanding economic and human losses caused by natural hazards such as earthquakes, and the amount of losses is affected by the quality of preventive measures and emergency management. For this reason, seismic vulnerability assessment is considered a crucial part of a strategy for seismic risk mitigation and for improving the resiliency of cities. Due to the high number of building archetypes for the seismic vulnerability assessment at a large scale, fast, simplified methods have been proposed that can facilitate the assessment procedure with low computational effort. Simplified methods can be categorized into three groups: analytical, empirical, and hybrid methods. In this study, simplified analytical methods for the seismic vulnerability assessment of unreinforced masonry (URM) buildings were reviewed, starting with their classification into three main groups: collapse mechanism-based, capacity spectrum-based, and fully displacement-based methods. Finally, attention was given to the corresponding software packages that were developed to facilitate the assessment procedure.

ACS Style

Amirhosein Shabani; Mahdi Kioumarsi; Maria Zucconi. State of the art of simplified analytical methods for seismic vulnerability assessment of unreinforced masonry buildings. Engineering Structures 2021, 239, 112280 .

AMA Style

Amirhosein Shabani, Mahdi Kioumarsi, Maria Zucconi. State of the art of simplified analytical methods for seismic vulnerability assessment of unreinforced masonry buildings. Engineering Structures. 2021; 239 ():112280.

Chicago/Turabian Style

Amirhosein Shabani; Mahdi Kioumarsi; Maria Zucconi. 2021. "State of the art of simplified analytical methods for seismic vulnerability assessment of unreinforced masonry buildings." Engineering Structures 239, no. : 112280.

Conference paper
Published: 02 April 2021 in Materials Today: Proceedings
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Corrosion phenomena is one of the main deterioration causes, which remarkably affects the behavior of structural reinforced concrete (RC) members in seismic regions. Researches on reducing rehabilitation cost, performance assessment, and accurate modelling of corrosion-affected RC structures are progressively becoming popular in recent years. Corrosion diminishes bond capacity between reinforcement and surrounding concrete, which induces reduction in strength and ductility of members. The aim of this investigation is to provide a prediction approach based on a large number of results from published researches related to corroded reinforcement in concrete members using artificial neural networks (ANN). The minimizing mean square error criterion and increasing regression value of predicted results are considered for evaluation of training performance of ANN models. The validity of proposed model is checked using collected experimental database. Results show that estimated model has acceptable agreement with experimented data.

ACS Style

Masoud Ahmadi; Ali Kheyroddin; Mahdi Kioumarsi. Prediction models for bond strength of steel reinforcement with consideration of corrosion. Materials Today: Proceedings 2021, 45, 5829 -5834.

AMA Style

Masoud Ahmadi, Ali Kheyroddin, Mahdi Kioumarsi. Prediction models for bond strength of steel reinforcement with consideration of corrosion. Materials Today: Proceedings. 2021; 45 ():5829-5834.

Chicago/Turabian Style

Masoud Ahmadi; Ali Kheyroddin; Mahdi Kioumarsi. 2021. "Prediction models for bond strength of steel reinforcement with consideration of corrosion." Materials Today: Proceedings 45, no. : 5829-5834.

Review
Published: 07 March 2021 in Metals
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Infrastructures and industrial buildings are commonly exposed to aggressive environments and damaged by corrosion. In prestressed reinforced concrete structures, the potential risks of corrosion could be severe since reinforcements are already subjected to high amounts of stress and, consequently, their load-bearing capacity could abruptly decrease. In recent years, some experimental studies have been conducted to explore the flexural behavior of corroded pretensioned reinforced concrete (PRC) beams, investigating several aspects of residual structural performance. Although many studies have been done in this area, there is no concise paper reviewing the state-of-the-art research. Accordingly, the main objective of this paper is to provide a review of the available experimental tests for residual capacity assessment of corroded PRC beams. Based on the state-of-the-art review, a degradation law for the flexural strength of corroded PRC beams is suggested.

ACS Style

Mahdi Kioumarsi; Armando Benenato; Barbara Ferracuti; Stefania Imperatore. Residual Flexural Capacity of Corroded Prestressed Reinforced Concrete Beams. Metals 2021, 11, 442 .

AMA Style

Mahdi Kioumarsi, Armando Benenato, Barbara Ferracuti, Stefania Imperatore. Residual Flexural Capacity of Corroded Prestressed Reinforced Concrete Beams. Metals. 2021; 11 (3):442.

Chicago/Turabian Style

Mahdi Kioumarsi; Armando Benenato; Barbara Ferracuti; Stefania Imperatore. 2021. "Residual Flexural Capacity of Corroded Prestressed Reinforced Concrete Beams." Metals 11, no. 3: 442.

Conference paper
Published: 26 February 2021 in Materials Today: Proceedings
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Developments in polymer technology have introduced new choices such as using fibers and fiber-reinforced polymers (FRP) to improve the impact behavior of concrete structures. In this research, 52 concrete samples (half of which wrapped with glass fiber-reinforced polymers-GFRP) with different compressive strengths (20, 30, and 40 MPa) and polypropylene fibers were constructed. These samples were subjected to weight dropping (46.7 kg and 66.8 kg). The number of weight droppings related to 30% weight loss was recorded. Results indicated that the impact resistance of the concrete samples, corresponding to the number of weight droppings, increased using higher-strength concrete, higher polypropylene ratios, or GFRP wrapping, separately and in application with each other. However, the effects of GFRP wrapping on the improvement of the impact resistance much higher than those of the polypropylene fibers or concrete strength.

ACS Style

A. Kheyroddin; H. Arshadi; M.R. Ahadi; G. Taban; M. Kioumarsi. The impact resistance of Fiber-Reinforced concrete with polypropylene fibers and GFRP wrapping. Materials Today: Proceedings 2021, 45, 5433 -5438.

AMA Style

A. Kheyroddin, H. Arshadi, M.R. Ahadi, G. Taban, M. Kioumarsi. The impact resistance of Fiber-Reinforced concrete with polypropylene fibers and GFRP wrapping. Materials Today: Proceedings. 2021; 45 ():5433-5438.

Chicago/Turabian Style

A. Kheyroddin; H. Arshadi; M.R. Ahadi; G. Taban; M. Kioumarsi. 2021. "The impact resistance of Fiber-Reinforced concrete with polypropylene fibers and GFRP wrapping." Materials Today: Proceedings 45, no. : 5433-5438.

Review
Published: 27 January 2021 in Sensors
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Improvements in the science of health monitoring and maintenance have facilitated the observation of damage and defects in existing structures and infrastructures, such as bridges and railways. The need to extend sensing technology through the use of wireless sensors as well as the lack of description tools for understanding, visualizing, and documenting sensor outputs has encouraged researchers to use powerful tools such as Building Information Modelling (BIM) systems. BIM has become important because of conducting tools widely used in the Architecture, Engineering, and Construction (AEC) industry to present and manage information on structural systems and situations. Since combining health monitoring and maintenance results with BIM models is a new field of study, and most projects utilize various aspects of it, we have conducted a review of important work related to this subject published from 2010 to November of 2020. After reviewing 278 journal articles, research trends, approaches, methods, gaps, and future agenda related to BIM in monitoring and maintenance were highlighted. This paper, through a bibliometric and content analysis, concludes that besides main improvements, some limitations now exist which affect the modeling and maintenance process. These limitations are related to extending the IFC schema, optimizing sensor data, interoperability among various BIM platforms, optimization of various sensing technologies for fault detection and management of huge amounts of data, besides consideration of environmental effects on monitoring hazards and underground objects. Finally, this paper aims to help to solve the mentioned limitation through a comprehensive review of existing research.

ACS Style

Reihane Panah; Mahdi Kioumarsi. Application of Building Information Modelling (BIM) in the Health Monitoring and Maintenance Process: A Systematic Review. Sensors 2021, 21, 837 .

AMA Style

Reihane Panah, Mahdi Kioumarsi. Application of Building Information Modelling (BIM) in the Health Monitoring and Maintenance Process: A Systematic Review. Sensors. 2021; 21 (3):837.

Chicago/Turabian Style

Reihane Panah; Mahdi Kioumarsi. 2021. "Application of Building Information Modelling (BIM) in the Health Monitoring and Maintenance Process: A Systematic Review." Sensors 21, no. 3: 837.

Journal article
Published: 06 January 2021 in Applied Sciences
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Using recycled aggregate in concrete is one of the best ways to reduce construction pollution and prevent the exploitation of natural resources to provide the needed aggregate. However, recycled aggregates affect the mechanical properties of concrete, but the existing information on the subject is less than what the industry needs. Compressive strength, on the other hand, is the most important mechanical property of concrete. Therefore, having predictive models to provide the required information can be helpful to convince the industry to increase the use of recycled aggregate in concrete. In this research, three different optimization algorithms including genetic algorithm (GA), salp swarm algorithm (SSA), and grasshopper optimization algorithm (GOA) are employed to be hybridized with artificial neural network (ANN) separately to predict the compressive strength of concrete containing recycled aggregate, and a M5P tree model is used to test the efficiency of the ANNs. The results of this study show the superior efficiency of the modified ANN with SSA when compared to other models. However, the statistical indicators of the hybrid ANNs with SSA, GA, and GOA are so close to each other.

ACS Style

Amirreza Kandiri; Farid Sartipi; Mahdi Kioumarsi. Predicting Compressive Strength of Concrete Containing Recycled Aggregate Using Modified ANN with Different Optimization Algorithms. Applied Sciences 2021, 11, 485 .

AMA Style

Amirreza Kandiri, Farid Sartipi, Mahdi Kioumarsi. Predicting Compressive Strength of Concrete Containing Recycled Aggregate Using Modified ANN with Different Optimization Algorithms. Applied Sciences. 2021; 11 (2):485.

Chicago/Turabian Style

Amirreza Kandiri; Farid Sartipi; Mahdi Kioumarsi. 2021. "Predicting Compressive Strength of Concrete Containing Recycled Aggregate Using Modified ANN with Different Optimization Algorithms." Applied Sciences 11, no. 2: 485.

Journal article
Published: 15 December 2020 in Materials
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The reduction of the moisture content of concrete during the drying process reduces the concrete’s volume and causes it to shrink. In general, concrete shrinkage is a phenomenon that causes concrete volume to dwindle and can lead to durability problems. There are different types of this phenomenon, among them chemical shrinkage, autogenous shrinkage, drying shrinkage including free shrinkage and restrained shrinkage, and thermal contraction. Shrinkage-reducing admixtures are commercially available in different forms. The present study investigates the effect of liquid propylene glycol ether on mechanical properties and free shrinkage induced by drying at different water-cement (w/c) ratios. Furthermore, the effect of shrinkage-reducing admixtures on the properties of hardened concrete such as compressive and tensile strength, electrical resistivity, modulus of elasticity, free drying shrinkage, water absorption, and depth of water penetration was investigated. The results indicated that shrinkage reducing agents performed better in a low w/c ratio and resulted in up to 50% shrinkage reduction, which was due to the surface reduction of capillary pores. The prediction of free shrinkage due to drying was also performed using an artificial neural network.

ACS Style

Mahdi Kioumarsi; Fazel Azarhomayun; Mohammad Haji; Mohammad Shekarchi. Effect of Shrinkage Reducing Admixture on Drying Shrinkage of Concrete with Different w/c Ratios. Materials 2020, 13, 5721 .

AMA Style

Mahdi Kioumarsi, Fazel Azarhomayun, Mohammad Haji, Mohammad Shekarchi. Effect of Shrinkage Reducing Admixture on Drying Shrinkage of Concrete with Different w/c Ratios. Materials. 2020; 13 (24):5721.

Chicago/Turabian Style

Mahdi Kioumarsi; Fazel Azarhomayun; Mohammad Haji; Mohammad Shekarchi. 2020. "Effect of Shrinkage Reducing Admixture on Drying Shrinkage of Concrete with Different w/c Ratios." Materials 13, no. 24: 5721.

Journal article
Published: 24 November 2020 in Applied Sciences
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Today, architectural application and economic constraints require that vertical-irregular structures be constructed in urban areas. Proposing methods to minimize damage to these structures during earthquakes is therefore crucial. Strict regulations have been enforced for the design and analysis of irregular structures given their higher vulnerability to damage compared to that of regular structures. The present study aimed to evaluate eight regular and irregular 10-story and 15-story steel structures with buckling-restrained braces frames (BRBFs) and concentric braced frames (CBFs) in terms of their responses to twelve far-field earthquakes. According to the obtained results, the mean value of maximum drift, top floor displacement and floor acceleration were higher in both regular and irregular structures with BRBFs than in those with CBFs.

ACS Style

Armin Karami; Shahrokh Shahbazi; Mahdi Kioumarsi. A Study on the Effects of Vertical Mass Irregularity on Seismic Behavior of BRBFs and CBFs. Applied Sciences 2020, 10, 8314 .

AMA Style

Armin Karami, Shahrokh Shahbazi, Mahdi Kioumarsi. A Study on the Effects of Vertical Mass Irregularity on Seismic Behavior of BRBFs and CBFs. Applied Sciences. 2020; 10 (23):8314.

Chicago/Turabian Style

Armin Karami; Shahrokh Shahbazi; Mahdi Kioumarsi. 2020. "A Study on the Effects of Vertical Mass Irregularity on Seismic Behavior of BRBFs and CBFs." Applied Sciences 10, no. 23: 8314.

Journal article
Published: 10 October 2020 in Engineering Structures
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In this study, nonlinear finite element (NLFE) analysis is conducted to determine the maximum shear capacity (Vmax) of stiffened steel plate shear walls (SSPSW) with rectangular openings. Results of a wide range of parametric study are presented using developed response surface method (RSM), which quantified the effect of prominent input variables on the predicted shear capacity of SSPSW. The studied parameters, which evaluated by different aspect ratios of the infill plate (L/h), are thickness of the infill plate (t), yield stress of the steel used in the infill plate (Fy), and the ratio of opening area to the total area of the infill plate (Ao/Ap). RSM is utilized to propose equations to predict the maximum shear capacity of SSPSW with different rectangular opening ratios, which can assist in optimum designing of SSPSW. Results show that, RSM is an accurate method to predict the shear capacity of specimens. Furthermore, by having characteristics of the specimens, the optimum size of openings and thickness of the infill plate can be calculated to achieve the target Vmax. Evaluating the results also indicated that shear capacity has linear relationship with variations of the steel infill plate thickness. Besides, by increasing in the thickness and aspect ratio of the infill plate, Vmax is strongly influenced by opening ratio.

ACS Style

Maryam Bypour; Mahdi Kioumarsi; Mohammad Yekrangnia. Shear capacity prediction of stiffened steel plate shear walls (SSPSW) with openings using response surface method. Engineering Structures 2020, 226, 111340 .

AMA Style

Maryam Bypour, Mahdi Kioumarsi, Mohammad Yekrangnia. Shear capacity prediction of stiffened steel plate shear walls (SSPSW) with openings using response surface method. Engineering Structures. 2020; 226 ():111340.

Chicago/Turabian Style

Maryam Bypour; Mahdi Kioumarsi; Mohammad Yekrangnia. 2020. "Shear capacity prediction of stiffened steel plate shear walls (SSPSW) with openings using response surface method." Engineering Structures 226, no. : 111340.

Review
Published: 13 August 2020 in Forests
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The conservation of heritage structures is pivotal not only due to their cultural or historical importance for nations, but also for understanding their construction techniques as a lesson that can be applied to contemporary structures. Timber is considered to be the oldest organic construction material and is more vulnerable to environmental threats than nonorganic materials such as masonry bricks. In order to assess the structural vulnerability of heritage timber structures subjected to different types of risk, knowledge about their structural systems and configurations, the nature and properties of the materials, and the behavior of the structure when subjected to different risks, is essential for analysts. In order to facilitate the procedure, different assessment methods have been divided into the categories in situ and ex situ, which are applicable for vulnerability assessments at the element and full-scale level of a case study. An existing methodology for structural vulnerability assessments and conservation of heritage timber buildings is reviewed and a new methodology is proposed.

ACS Style

Amirhosein Shabani; Mahdi Kioumarsi; Vagelis Plevris; Haris Stamatopoulos. Structural Vulnerability Assessment of Heritage Timber Buildings: A Methodological Proposal. Forests 2020, 11, 881 .

AMA Style

Amirhosein Shabani, Mahdi Kioumarsi, Vagelis Plevris, Haris Stamatopoulos. Structural Vulnerability Assessment of Heritage Timber Buildings: A Methodological Proposal. Forests. 2020; 11 (8):881.

Chicago/Turabian Style

Amirhosein Shabani; Mahdi Kioumarsi; Vagelis Plevris; Haris Stamatopoulos. 2020. "Structural Vulnerability Assessment of Heritage Timber Buildings: A Methodological Proposal." Forests 11, no. 8: 881.

Journal article
Published: 10 February 2020 in Applied Sciences
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As a lateral load-bearing system, the steel plate shear wall (SPSW) is utilized in different structural systems that are susceptible to seismic risk and because of functional reasons SPSWs may need openings. In this research, the effects of rectangular openings on the lateral load-bearing behavior of the steel shear walls by the finite element method (FEM) is investigated. The results of the FEM are used for the prediction of SPSW behavior using the artificial neural network (ANN). The radial basis function (RBF) network is used to model the effects of the rectangular opening in the SPSW with different plate thicknesses. The results showed that the opening leads to reduced load-bearing capacity, stiffness and absorbed energy, which can be precisely predicted by employing RBF network model. Besides, the suitable relative area of the opening is determined.

ACS Style

Mohammad Javad Moradi; Mohammad Mahdi Roshani; Amirhosein Shabani; Mahdi Kioumarsi. Prediction of the Load-Bearing Behavior of SPSW with Rectangular Opening by RBF Network. Applied Sciences 2020, 10, 1185 .

AMA Style

Mohammad Javad Moradi, Mohammad Mahdi Roshani, Amirhosein Shabani, Mahdi Kioumarsi. Prediction of the Load-Bearing Behavior of SPSW with Rectangular Opening by RBF Network. Applied Sciences. 2020; 10 (3):1185.

Chicago/Turabian Style

Mohammad Javad Moradi; Mohammad Mahdi Roshani; Amirhosein Shabani; Mahdi Kioumarsi. 2020. "Prediction of the Load-Bearing Behavior of SPSW with Rectangular Opening by RBF Network." Applied Sciences 10, no. 3: 1185.

Journal article
Published: 01 November 2019 in Construction and Building Materials
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The main objective of this paper is to develop new design formulations for determining shear stress of steel fiber-reinforced concrete (SFRC) beams without stirrups using Gene Expression Programming (GEP) and Artificial Neural Networks (ANNs) based on a large number of test results. The proposed formulations relate the average shear stress to geometrical, and material properties of common reinforced concrete beam (effective depth, ratio of shear span to effective depth, compressive strength of concrete, and longitudinal steel reinforcement) and fiber properties (diameter, length, and volume percentage). In order to verify the validity and reliability of the proposed formulations, a comparative assessment was conducted between measured and calculated average shear stress of beams. The comparative assessment is carried out in terms of common and modified coefficient of determination (R and Rm), root- mean-square error (RMSE), mean absolute percentage error (MAPE), and gradients of regression lines (k and k’). The results obtained for the considered statistical measures and performance criteria reveal that all of the proposed formulations have acceptable ability to calculate average shear stress for a wide range of shear span to effective depth ratios.

ACS Style

Masoud Ahmadi; Ali Kheyroddin; Ahmad Dalvand; Mahdi Kioumarsi. New empirical approach for determining nominal shear capacity of steel fiber reinforced concrete beams. Construction and Building Materials 2019, 234, 117293 .

AMA Style

Masoud Ahmadi, Ali Kheyroddin, Ahmad Dalvand, Mahdi Kioumarsi. New empirical approach for determining nominal shear capacity of steel fiber reinforced concrete beams. Construction and Building Materials. 2019; 234 ():117293.

Chicago/Turabian Style

Masoud Ahmadi; Ali Kheyroddin; Ahmad Dalvand; Mahdi Kioumarsi. 2019. "New empirical approach for determining nominal shear capacity of steel fiber reinforced concrete beams." Construction and Building Materials 234, no. : 117293.

Conference paper
Published: 29 October 2019 in IOP Conference Series: Materials Science and Engineering
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Corrosion is the most commonly severe defect in reinforced concrete (RC) structures and it mainly causes reduced rebar cross-section. The corrosion rate is the determining parameter of the progress of corrosion-induced damage. The present work is focused on the application of finite element (FE) analysis, using DIANA, to predict the residual capacity of reinforced concrete beam with different degree of corrosion. To this aim, existing experimental data is used to develop a FE model of corroded beams and to investigate their behaviour. This model is validated to predict the impact of time and current rate of corrosion on the residual load carrying capacity of corroded RC beams.

ACS Style

M Kioumarsi; Mh Baghban; S Imperatore. Effect of time dependent corrosion rate on residual capacity of corroded RC beam. IOP Conference Series: Materials Science and Engineering 2019, 652, 012031 .

AMA Style

M Kioumarsi, Mh Baghban, S Imperatore. Effect of time dependent corrosion rate on residual capacity of corroded RC beam. IOP Conference Series: Materials Science and Engineering. 2019; 652 (1):012031.

Chicago/Turabian Style

M Kioumarsi; Mh Baghban; S Imperatore. 2019. "Effect of time dependent corrosion rate on residual capacity of corroded RC beam." IOP Conference Series: Materials Science and Engineering 652, no. 1: 012031.

Conference paper
Published: 29 October 2019 in IOP Conference Series: Materials Science and Engineering
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The aim of this work is to evaluate the influence of corrosion on the lateral displacement capacity and on the global ductility of reinforced concrete (RC) elements, using finite element (FE) analysis. The corrosive phenomenon is simulated accounting for its consequences on the reinforcing bars (variation of the steel geometry and mechanical properties), on the concrete (cracking) and at the interface (variation of the bond-slip behaviour). The parametric analysis, using numerical models, highlights how corrosion significantly changes the structural performance of the element in terms of deformability.

ACS Style

S Imperatore; M Kioumarsi. Lateral displacement capacity of reinforced concrete elements damaged by corrosion. IOP Conference Series: Materials Science and Engineering 2019, 652, 012032 .

AMA Style

S Imperatore, M Kioumarsi. Lateral displacement capacity of reinforced concrete elements damaged by corrosion. IOP Conference Series: Materials Science and Engineering. 2019; 652 (1):012032.

Chicago/Turabian Style

S Imperatore; M Kioumarsi. 2019. "Lateral displacement capacity of reinforced concrete elements damaged by corrosion." IOP Conference Series: Materials Science and Engineering 652, no. 1: 012032.

Website
Published: 21 August 2019 in Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications
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Reinforced Concrete (RC) structures frequently are deteriorated by corrosion attack where pitting morphology is the worst form of degradation. Appropriate vulnerability analyses, accounting for the variation of mechanical properties of material during the time, give an assessment of the residual service life of corroded structures. Aim of the present paper is to evaluate any variation in the seismic behaviour of an irregular poor-designed RC frame subjected to the chloride attack. The progressive stiffness degradation and the effects of higher modes are considered in the study by means of displacement-based adaptive pushover analyses.

ACS Style

Stefania Imperatore; Mahdi Kioumarsi. Seismic behavior of irregular RC-frames damaged by corrosion. Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications 2019, 2197 -2202.

AMA Style

Stefania Imperatore, Mahdi Kioumarsi. Seismic behavior of irregular RC-frames damaged by corrosion. Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications. 2019; ():2197-2202.

Chicago/Turabian Style

Stefania Imperatore; Mahdi Kioumarsi. 2019. "Seismic behavior of irregular RC-frames damaged by corrosion." Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications , no. : 2197-2202.

Website
Published: 21 August 2019 in Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications
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Ultra-High Performance Cementitious Composites (UHPCC) is a kind of concrete with specific characteristics that has lesser drawbacks in term of tensile strength and breakage. One of the methods for improving the mechanical properties of concrete is adding fibers. This study numerically investigates the effect of steel fiber with different volume fractions (Vf ) on flexural behavior of UHPCC using nonlinear finite element method (NLFEM). For this purpose, hooked ended fibers with five different Vf of fibers (0%, 0.5%, 1%, 1.5% and 2%) and aspect ratio length to diameter 80 (L/D=80) are used in four-point bending tests. The modeling of the nonlinear region of three-dimensional (3D) model of concrete is based on concrete damage plasticity model (CDPM). Type and size of the suitable element are chosen based on mesh sensitivity analysis. The interaction mechanism between steel fibers and concrete considered the embedded region algorithm. Finite element modeling of the compressive specimen is validated by comparing the stress-strain curve of the numerical model with that of the experimental study. Results showed that the addition of steel fibers with different Vf caused 6% to 33% improvement in flexural behavior.

ACS Style

M. Halimi; Mahdi Kioumarsi; H. Bakhshi; H. Sarkardeh. Numerical investigation on effects of steel fibers content on flexural behavior of UHPCC. Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications 2019, 1403 -1408.

AMA Style

M. Halimi, Mahdi Kioumarsi, H. Bakhshi, H. Sarkardeh. Numerical investigation on effects of steel fibers content on flexural behavior of UHPCC. Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications. 2019; ():1403-1408.

Chicago/Turabian Style

M. Halimi; Mahdi Kioumarsi; H. Bakhshi; H. Sarkardeh. 2019. "Numerical investigation on effects of steel fibers content on flexural behavior of UHPCC." Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications , no. : 1403-1408.

Journal article
Published: 02 July 2019 in Buildings
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Worldwide, steel corrosion is one of the greatest deterioration problems for reinforced concrete structures. Comparing some experimental results from literature with a complex FEM model, the present paper points out the principal aspects that characterize the static behavior of reinforced concrete (RC) elements damaged by corrosion. Moreover, the nondimensional abaci defined for some specific case studies finalized to the evaluation of the residual flexural strength of corroded elements highlight the dangerousness of the corrosion degradation if the failure of the element is governed by the steel.

ACS Style

Antonio Bossio; Stefania Imperatore; Mahdi Kioumarsi. Ultimate Flexural Capacity of Reinforced Concrete Elements Damaged by Corrosion. Buildings 2019, 9, 160 .

AMA Style

Antonio Bossio, Stefania Imperatore, Mahdi Kioumarsi. Ultimate Flexural Capacity of Reinforced Concrete Elements Damaged by Corrosion. Buildings. 2019; 9 (7):160.

Chicago/Turabian Style

Antonio Bossio; Stefania Imperatore; Mahdi Kioumarsi. 2019. "Ultimate Flexural Capacity of Reinforced Concrete Elements Damaged by Corrosion." Buildings 9, no. 7: 160.

Journal article
Published: 01 May 2019 in Key Engineering Materials
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In this paper, the behavior of steel plate shear wall (SPSW) in the reinforced concrete frame (RCF) has been studied numerically. Three different connections have been proposed to connect SPSW to RCF. In the first connection, fish plates, while in the second one, combination of fish plates and studs transfer forces between SPSW and RCF. In the third connection, there is no direct connection between the infill plate and RCF, and additional steel frame has been used for connecting of the infill plate. The results demonstrate that, load carrying capacity increases in all the specimens comparing the reference RCF. Investigating the formation sequence of plastic hinges in different specimens demonstrates that there is different sequence in the specimens with different connections.

ACS Style

Maryam Bypour; Benyamin Kioumarsi; Mahdi Kioumarsi. Investigation of Failure Mechanism of Thin Steel Plate Shear Wall in RC Frame. Key Engineering Materials 2019, 803, 314 -321.

AMA Style

Maryam Bypour, Benyamin Kioumarsi, Mahdi Kioumarsi. Investigation of Failure Mechanism of Thin Steel Plate Shear Wall in RC Frame. Key Engineering Materials. 2019; 803 ():314-321.

Chicago/Turabian Style

Maryam Bypour; Benyamin Kioumarsi; Mahdi Kioumarsi. 2019. "Investigation of Failure Mechanism of Thin Steel Plate Shear Wall in RC Frame." Key Engineering Materials 803, no. : 314-321.

Journal article
Published: 16 November 2018 in Engineering Structures
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In the reinforced concrete (RC) structures with steel plate shear walls (SPSWs) as a lateral resisting system, to obtain maximum capacity of SPSW, implementing proper connections play an important role to transfer force from wall to the frame. In this paper, four connection types are proposed and numerically investigated to transfer the tension field forces between SPSW and RC frame (RCF). Three types of connections are applicable for rehabilitating of existing RC structures and one type can be used for new construction. The behavior of connections has been evaluated using non-linear finite element analysis (NLFEA). Results of the specimens with different types of connections demonstrated that the use of SPSW in RCF with appropriate connections could provide excellent ductility as well as high load carrying capacity and initial stiffness by distributing the yielding zone in SPSW along the wall height.

ACS Style

Maryam Bypour; Majid Gholhaki; Mahdi Kioumarsi; Benyamin Kioumarsi. Nonlinear analysis to investigate effect of connection type on behavior of steel plate shear wall in RC frame. Engineering Structures 2018, 179, 611 -624.

AMA Style

Maryam Bypour, Majid Gholhaki, Mahdi Kioumarsi, Benyamin Kioumarsi. Nonlinear analysis to investigate effect of connection type on behavior of steel plate shear wall in RC frame. Engineering Structures. 2018; 179 ():611-624.

Chicago/Turabian Style

Maryam Bypour; Majid Gholhaki; Mahdi Kioumarsi; Benyamin Kioumarsi. 2018. "Nonlinear analysis to investigate effect of connection type on behavior of steel plate shear wall in RC frame." Engineering Structures 179, no. : 611-624.