
Mahdi KioumarsiOsloMet – Oslo Metropolitan University · Department of Built Environment
Mahdi Kioumarsi
Professor
About
112
Publications
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Introduction
Dr. Mahdi Kioumarsi is a Professor at the Department of Built Environment of OsloMet—Oslo Metropolitan University and at the Department of Engineering of Østfold University in Norway.
His research has ranged from large-scale (complete buildings) to small-scale (material level), mainly within the field of concrete structures. Common for all his research is the combination of FE modeling, soft computing methods, and experimental work.
Publications
Publications (112)
In this paper, the interference of localised corrosion on adjacent reinforcement bars in a concrete beam in bending is quantified. The focus is on the influence on the bending ultimate limit state. The effect of four parameters was investigated using the response surface method (RSM) and non-linear finite element analysis. The parameters considered...
Assuming given corrosion states this paper studies the effect of interference of corrosion pits on adjacent rebars on the probability of bending failure of a corroded reinforced concrete beam. Spatial distribution of localised corrosion along a beam is considered in the analyses. The probability of failure is estimated using Monte Carlo simulation....
A B S T R A C T
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 para-metric study are presented using developed response surface method (RSM), which quantified the effect of prominen...
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...
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 shrinkag...
This research delves into the integration of economically sustainable materials—Portland limestone cement (PLC) and recycled glass powder (GP)—into ultra-high-performance concrete (UHPC) formulations. The emphasis is on mitigating UHPC’s reliance on high-cost, high content of cement, and proprietary additives, which elevate both the expense and env...
The rapid growth of cities, particularly in developing regions, is driving a significant increase in concrete demand. However, concrete production is a major environmental concern, releasing high levels of carbon dioxide (CO 2 ) due to its dependence on cement. This study investigates the use of class-F fly ash as a partial replacement for cement i...
This study investigates the integration of electrospun cellulose acetate (CA) microfibers into cementitious composites to enhance the mechanical properties of the resulting composite material. Through systematic experimentation, optimal parameters for electrospinning CA fibers were inspected, and different methods were used to blend electrospun fib...
The advancement of geopolymer concrete technology presents a sustainable solution to address the challenges associated with the significant carbon footprint of the construction industry. This research uses machine learning methods to predict the compressive strength of fly ash-based geopolymer concrete using a wide range of experimental results. Fu...
Ultra-high-performance concrete (UHPC) is well known for its exceptional strength and durability in modern construction and bridges. Despite its advantages, traditional UHPC mixes with high cement content can negatively affect the environment through CO 2 emissions. This study aims to investigate using low-impact supplementary cementitious material...
Timber is widely recognized as a construction material of choice, owing to its numerous advantages, including its sustainability and abundance in large parts of the world. Although timber is frequently employed by the construction industry for buildings, its usage in modern bridge structures has remained limited. This research investigates the stru...
Modeling drying shrinkage presents significant challenges due to the complexity and multitude of contributing parameters. This study provides detailed insights into the input requirements and predictive capabilities of established models by leveraging various datasets from the NU-ITI database. Initially, the performance of a shrinkage model was eva...
Shear walls are fundamental structural elements within mid- and high-rise buildings, mitigating lateral forces such as wind and seismic forces. In recent years, numerous research endeavors have emerged, focusing on the integration of non-conventional materials such as ultra-high-performance concrete (UHPC) into shear wall construction, as alternati...
This study aims to optimize the carbon fiber-reinforced polymer’s (CFRP) arrangements rather than the amount of secondary steel reinforcements for strengthening reinforced concrete (RC) corbels, utilizing finite element (FE) analysis. While previous studies have only examined different types of FRP sheet arrangement in the absence or presence of eq...
Aiming at evaluating the bond strength of fiber-reinforced polymer (FRP) rebars in ultra-high-performance concrete (UHPC), boosting machine learning (ML) models have been developed using datasets collected from previous experiments. The considered variables in this study are rebar type and diameter, elastic modulus and tensile strength of rebars, c...
Nowadays, the helipad is considered on the roofs of tall buildings to accommodate air taxi services or evacuation in case of a major fire outbreak. On the other hand, lateral load systems play an essential role in tall buildings. In tall buildings, the reinforced concrete end shear walls connect the ends of two reinforced concrete shear walls in al...
This research aims to predict the maximum shear capacity of Composite Steel Plate Shear Walls (CSPSWs) through nonlinear Finite Element (NLFE) analyses and Response Surface Method (RSM). The variables are concrete thickness and compressive strength, steel infill plate thickness, and yield stress. A parametric study was performed on CSPSW comprising...
This study aims to explore the optimal strut-and-tie-model (STM) for strengthening reinforced concrete (RC) corbels with carbon fiber-reinforced polymer (CFRP), utilizing finite element (FE) analysis. While previous studies have only examined a single type of FRP sheet arrangement, this research fills a gap by investigating the effect of four confi...
Innovation in structural engineering has sparked remarkable advancements in the building materials sector and the construction industry in general [...]
Pozzolanic materials or industrial wastes can be used to partially replace cement, minimizing the carbon footprint of concrete structures. Zeolite, silica fume, fly ash, and metakaolin are some of the most frequently used supplementary materials that reduce the concrete's permeability and, therefore, play a significant role in improving its durabil...
The high vulnerability of prestressed reinforced concrete (PRC) structures to the corrosion degradation has been highlighted by several damage cases occurred in European countries. Therefore, many researchers addressed this important topic in the last decade, carrying out bending test of full-scale PRC beams, to evaluate the residual structural per...
A holistic methodology for developing the digital twins and conducting seismic vulnerability assessments of masonry arch bridges is proposed and applied to a historical stone masonry bridge. In this light, digital cameras, drones, and 3D laser scanners were utilized for 3D geometric documentation of the bridge. 3D finite element (FE) models were co...
Seismic analysis of historical masonry bridges is important for authorities in all countries hosting such cultural heritage assets. The masonry arch bridge investigated in this study was built during the Roman period and is on the island of Rhodes, in Greece. Fifteen seismic records were considered and categorized as far-field, pulse-like near-fiel...
Self-compacting concrete (SCC) is a highly flowable concrete that can fill complex formwork without the need for vibration. However, its high consistency can lead to various forms of instability, such as separation, bleeding, blockage, and settling. These instabilities can adversely affect the fresh and hardened properties of the concrete. Therefor...
Bridges play a vital role in highway transportation systems and damage to bridges may cause impaired emergency response and economic loss and interrupt the functionality of the systems. Damage to bridge during the last earthquakes shows that considering the effects of the vertical component of earthquakes in seismic damage assessment of reinforced...
The traditional production process of clay bricks involves the extraction of significant amounts of raw materials and consumes considerable energy, leading to anthropogenic greenhouse gas emissions and environmental degradation. Using environmentally friendly materials in the construction industry has become an attractive alternative for mitigating...
The lack of adequate space for sewage sludge disposal has become a significant challenge in many countries. Landfilling and using sewage sludge as fertilizer in agricultural lands are the main methods for disposal. However, these methods can result in soil and groundwater contamination as well as heavy metal and microbial pollution in soil. An alte...
Unreinforced masonry (URM) is considered one of the most cost-effective structural typologies for low-rise buildings in seismic regions. Near-field (NF) ground motions are sometimes characterized by high-velocity pulses that are typically more destructive than far-field (FF) seismic events. Therefore, a seismic fragility analysis of low-rise URM bu...
In the design and analysis stages, the modulus of elasticity plays a crucial role in influencing the lateral deflection of a reinforced concrete structure. The elastic modulus (EM) of concrete is affected by a wide variety of parameters, some of which are the compressive capacity of the sample, its age, the type of aggregate used, the type of cemen...
Rebar corrosion and its consequences are one of the most common damages to reinforced concrete (RC) structures. In structures with greater sensitivity, such as prestressed reinforced concrete (PRC) structures, where steel elements, including prestressed tendons, play a more significant role in supporting the structure, the importance of this issue...
Replacing Ordinary Portland Cement (OPC) with industrial waste like Ground Granulated Blast Furnace Slag (GGBFS) has been proven to have remarkable benefits regarding the mechanical properties of concrete and the environment. The main objectives of this research, as a result, are to (a) develop a generalized, accurate, and optimized Machine Learnin...
The main objective of this study is to investigate the structural performance of reinforced concrete (RC) beam specimens strengthened with 3D-fiberglass as compared with fiber-reinforced polymers (FRP) sheets. For this purpose, six RC beams were fabricated, strengthened, and tested under a four-point bending machine. One of the beams served as the...
Seismic vulnerability assessment of historical unreinforced masonry (URM) buildings is crucial for the authorities due to the high susceptibility of historical URM buildings to earthquakes. Open system for earthquake engineering simulation (OpenSees) is a well-known, powerful, and versatile seismic analysis platform. In a lack of a free graphical u...
The construction sector is one of the main contributors to carbon dioxide (CO2) emission and causes of global warming. CO2 mitigation solutions are vital. New technologies can facilitate and improve these efforts. Thus, the paper reviews how new technologies of artificial intelligence and machine learning have contributed to CO2 emissions reduction...
Shear wall is one of the common lateral bracing systems in reinforced concrete structures. A coupling beam can be used due to architectural limitations for connecting two or multiple separate walls. Coupling beams are the most vulnerable elements of coupled shear wall systems. Therefore, beams could be designed to act as replaceable fuses in the sy...
Since destructive tests are not allowed for historical structures, numerical model updating using accelerometers has gained a lot of attraction in the last decade. Furthermore, another application of structural health monitoring is damage detection for near-real-time monitoring of cultural heritage assets of infrastructures such as masonry bridges....
In this study, the seismic and static performance of post-installed anchors (bars) using chemical bonding (epoxy adhesive mortar) in cracked and uncracked reinforced concrete was analyzed using Hilti International software (Hilti PROFIS Anchor soft.). For this purpose, 52 concrete specimens with different anchor diameters, bar installation depth, a...
Brick masonry is considered as one of the old construction materials, and several cultural heritage assets are made of unreinforced masonry (URM), which is susceptible to earthquakes due to its brittle behavior. The equivalent frame method (EFM) is a nonlinear modeling method widely utilized for the seismic analysis of URM buildings with lower comp...
Global warming is one of the most important environmental issues that threatens the living on this globe so far. Carbon dioxide (CO2) emission from the construction industry is one of the major sources of emissions that leads to global warming. Therefore, CO2 emission reduction potentials are of additional attention nowadays. New technologies such...
Cultural heritage (CH) assets are the legacy of a society that are inherited from the past generations and can give us lessons for contemporary construction. Not only the formally recognized CH assets but also the non-CH structures and infrastructure, and the interconnection between them are crucial to be considered in a vulnerability assessment to...
In the recent decades, researchers have shown an increased interest in the reusing recycled concrete aggregate generated by buildings’ demolitions because of the undeniable economic and environmental benefits. The main objective of this research is therefore to evaluate the influence of replacing natural fine and coarse aggregate on the 3-, 7- and...
Structural vulnerability assessment of heritage structures is a pivotal part of a risk mitigation strategy for preserving these valuable assets for the nations. For this purpose, developing digital twins has gained much attention lately to provide an accurate digital model for performing finite element (FE) analyses. Three-dimensional (3D) geometri...
Vibration-based finite element model (FEM) updating of cultural heritage assets is gaining so much attraction these days since destructive tests are usually not allowed to be performed. In this study, a framework for developing three-dimensional (3D) FEMs is proposed using 3D laser scanners and applied on Slottsfjell tower, a stone masonry tower in...
Unreinforced masonry (URM) buildings are susceptible to extraordinary actions such as earthquakes compared to steel or reinforced concrete buildings. Various methods have been developed for the computational analysis of URM buildings in the last few decades. The equivalent frame method (EFM) is one of the numerical modeling approaches widely used f...
Conservation of historical structures plays a pivotal role in every nation, and numerical modeling of historic buildings is an essential part of a conservation methodology. Since deriving the mechanical properties of construction materials using destructive tests is usually not allowed, and most of the cultural heritage assets are so complicated in...
Recent studies highlight the potential impact of earthquakes on cultural heritage sites and monuments, which in turn yield significant adverse impacts on economies, politics, and societies. Several aspects such as building materials, structural responses, and restoration strategies must be considered in the conservation of heritage structures. Timb...
This study aimed to investigate the effect of wind load on traditional dome buildings using the computational fluid dynamic (CFD) techniques. In this study, fifteen Iranian commonly used dome architectures with combined arcs are chosen to numerically investigate the variations in wind pressure coefficient (Cp) on these domes at different heights an...
Masonry buildings have been used for centuries in various locations around the world, including areas with high seismicity. Studies about the behavior of masonry structural components subjected to lateral loadings and retrofitting techniques for improving their performance have gained much attraction lately. Various simplified methods have been pre...
The formulation of a multi-hazard loss model for a given structure is not only of interest for predicting the economic impact of future damage but it can also be of importance for risk mitigation. A methodology that can assess the vulnerability of the built environment is a significant component of a loss model. The multi-risk vulnerability of heri...
Shrinkage is the volume change of concrete without influence of external forces. Drying shrinkage, which occurs after the concrete hardening, is one of the most important causes of the cracking in concrete members. In addition to adverse effects on the appearance of concrete, cracks may reduce the strength and durability by increasing the permeabil...
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 a...
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...
This study investigated the effects of applying a uniform magnetic field (UMF) of flux density 500 mili Tesla (mT) to fresh and hardened concrete specimens with steel fibers at volume ratios of 1 and 1.5% on mechanical and microstructural properties. To attain these objectives, compressive and splitting tensile strengths tests were carried out on t...
The corrosion of steel bars in concrete is a dangerous and extremely costly problem that causes losses of serviceability and structural capacity in buildings and bridges. Once the depassivation occurs, because of concrete carbonation or chloride attack, the oxides occupy approximately 2–6 times the iron volume, causing a pressure at the steel–concr...
Prestressed reinforced concrete beams are widely used in industrial and commercial buildings, which are commonly exposed to aggressive environments and damaged by corrosion. This precast construction technique has also been used for the last 50 years in most viaducts and bridges built in many countries like Italy. According to previous literature r...
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. Corro...
Using high-strength reinforcements (HSRs) has several benefits in terms of financial and execution considerations. However, possible effects of HSR application on structural behavior such as ductility, energy dissipation, and damage process are not fully known for the researchers. In this study, firstly the HSR effects on the cyclic behavior, crack...
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 polypropy...
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 docum...
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 stre...
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 vulnerabili...
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 threa...