• Home
  • Fereidoon Moghadas Nejad
Fereidoon Moghadas Nejad

Fereidoon Moghadas Nejad
Amirkabir University of Technology (Polytechnic)

PhD in Civil Engineering
National Distinguished Professor & Head of Transportation Group, Amirkabir University of Technology (Tehran Polytechnic)

About

254
Publications
78,116
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
4,908
Citations
Citations since 2016
166 Research Items
4375 Citations
20162017201820192020202120220200400600800
20162017201820192020202120220200400600800
20162017201820192020202120220200400600800
20162017201820192020202120220200400600800
Introduction
Fereidoon Moghadas Nejad holds a Ph.D. degree (1996) from The University of Sydney, Australia, in Civil Engineering. After earning his Ph.D., he was a Postdoctoral Scholar in the Department of Civil Engineering at University of Western Sydney in 1997. In 1998, he joined Dep. of Civil & Environmental Engineering, Amirkabir University of Technology, as an Assistant Professor, and currently is a Professor and Head of Transportation Division.

Publications

Publications (254)
Article
Full-text available
Reinforced concrete (RC) durability is a crucial feature to estimate long-term quality and structural performance. The degradation model is vital for the resource planning of maintenance projects. This model will extract data by updating the status of structures and trending the components’ state over time in terms of durability. Surface erosion, s...
Article
Full-text available
Moisture damage is a prevalent failure in asphalt pavements, which is directly linked to stripping and bitumen-aggregate adhesion. Also, it can lead to other main damages. This research aims to evaluate the adhesion and moisture susceptibility of asphalt mixes containing a new polymer additive namely ultra-high-molecular-weight polyethylene (UHMWPE...
Article
Concerns exist over the potential moisture damage and adhesion of asphalt mixtures. This research aims to evaluate the adhesion and moisture susceptibility of asphalt mixtures containing two nanomaterials [nano zycotherm (NZT) and nano hydrated lime (NHL)]. Various tests [tensile strength ratio (TSR), coating ratio (CR), and surface free energy (SF...
Preprint
Reinforced Concrete (RC) durability is a crucial feature to estimate the long-term quality and structural performance. Since life span estimation is vital for maintenance resource planning, a degradation model of RC component extracts by updating the status of structures and trending the components’ state over time in terms of durability. Surface e...
Article
Pavement surface texture affects safety and comfort of road users. Pavement skid resistance, surface drainage, noise generation and vehicle depreciation are all affected by the pavement surface texture. 3D evaluation is one of the most accurate methods of measuring pavement texture characteristics. In this paper, a 3D automatic device based on a cu...
Chapter
This introduction presents an overview of the key concepts discussed in the subsequent chapters of this book. The book defines automation and data collection methods. It provides a discussion of the general structure and macroarchitecture of the development of infrastructure models at the network level as well as the main components of the overall...
Chapter
The use of image processing tools generates data for analysis, which in many cases, and requires the use of fuzzy methods to remove ambiguity or quantification. Fuzzy rules and fuzzy reasoning are essential components of fuzzy inference systems that are the most important modeling elements based on fuzzy set concept and are widely used in the analy...
Chapter
This chapter examines the structure and architecture of automated infrastructure inspection equipment, and presents a set of final criteria expected from advanced upgrades. It introduces some emerging technologies that can be effective in increasing the efficiency of the automation evaluation, inspection, and technology development process in this...
Chapter
Nature‐inspired optimization algorithms (NIOA) are a set of algorithms that are inspired by the behavior of natural phenomena, such as simulating congestion intelligence, biological systems, and physical and chemical systems. This chapter summarizes the main theory and general idea of some NIOAs and presents detail on how to use one or more NIOAs....
Chapter
This chapter presents the basic principles and working methods of diagnosis and new effective parameters in diagnosing failure or anomaly. It introduces various methods for automatic detection of anomalies in infrastructure, including road paving, that can be further developed for other infrastructure, such as tunnel walls, structures, dams, silos,...
Chapter
The key goal of applying image‐processing techniques is to extract meaningful features in order to perform classification and evaluation operations. Extracting features with more data transfer capability can increase the speed and efficiency of the method. This chapter examines the types of feature extraction methods and image‐related features. The...
Chapter
Feature selection is an important step to reduce dimensions, whereby less important features are removed and ultimately limited to a small subset of main features. This chapter presents the latest developments in various feature selection methods. It examines filter, wrapper, and hybrid methods utilizing a combination of different methods through e...
Chapter
The three main components for any automated system are: image capture device, image analysis system and related algorithms, and interpretation and indexing methods. This chapter deals with the second part of automated systems, namely image processing. Each analysis of an image requires six general steps, which include: preprocessing, segmentation,...
Chapter
This chapter presents the performance evaluation methods and indicators, and provides a summary of the types of general indicators in infrastructure evaluation. It provides a general classification of the performance evaluation methods and common indicators. The chapter presents a general category of evaluation metrics that includes General statist...
Chapter
Classification is a type of prediction and calculation method in which a method is designed to guess the placement of data in a category, whereby the output is categorized and a class is located. This chapter describes the most common classification methods used in infrastructure management and provides examples of applications. It presents the fol...
Article
Full-text available
The texture assessment of pavement surface plays an important role in nearly all Pavement Management System (PMS). The Surface drainage, which related to the surface texture condition and plays a vital role in pavement safety and accident rate reduction, is a generally neglected part in these systems. The present study conducted to present an image...
Article
Full-text available
Rutting is one of the major deteriorations of asphalt pavement, significantly impacts road safety and service quality. Prediction models are necessary to prevent and control the damage caused by this deterioration in the pavement management system. In this study, using the artificial neural network algorithm, models have been developed to predict t...
Article
Full-text available
Choosing an appropriate strategy in order to maintain pavements has become a significant concern. Recently, pavement agencies tackle large-scale networks, which makes the problem complicated. To prevail in this complexity, utilizing metaheuristic algorithms can be an ideal approach. By increasing the dimension of the problem, the competency of meta...
Article
Full-text available
Faulting is one of the most common functional failures in concrete pavements. Pavement design and pavement management systems can both benefit from predicting this failure. Therefore, predicting this failure can be very useful. Artificial neural networks, a powerful technique, were utilized in this study to predict this failure. The artificial neur...
Article
Full-text available
The significant increase in transportation and heavy vehicle traffic has caused freeway routes with heavy traffic to face a decrease in safety levels. Furthermore, fatigue and sleepiness are proven to be two of the main reasons of road accidents, and therefore focus on these issues is crucial. Factors such as "use of engineering (safety) technology...
Article
Predicting faulting failure is useful in the optimal concrete pavement design. In this study, artificial neural networks and the random forest method have been used to predict the amount of this failure. The general prediction model was created by inserting 32 available input variables into artificial neural networks. An integer two objectives opti...
Article
Full-text available
In this study, four concrete types, including ordinary Portland cement concrete, fly ash concrete, slag concrete, and slag-fly ash concrete, are taken into account in order to estimate their compressive strength by two novel machine learning methods (genetic algorithm and soccer league competition algorithm), and four types of regressions (linear,...
Article
Road accident is one of the important problems in the world which caused large number of deaths. In a road crash dataset, the fatal crash samples, often constitute very small proportion in comparison with non-fatal crash samples. Accurate prediction of fatal crashes, as a minority class, is one of the important challenges in such imbalanced sample...
Article
The main aim of this study is to develop prediction equations of asphalt mastic fractional model parameters based on the fractional model parameters of asphalt binder, taking into consideration many parameters including, styrene–butadienestyrene (SBS) and polyphosphoric acid (PPA) modification, modifier’s dosage, volume filling rate of siliceous fi...
Article
Fracture resistance curves (R-curves) provide a robust tool for a comprehensive insight into the crack propagation regime in engineering materials. In this paper, an extensive research program is conducted to determine R-curves for hot mix asphalt (HMA) mixtures with varying properties. The experimental results are then used to develop R-curve pred...
Article
This paper examines the effect of polyphosphoric acid (PPA) on asphalt’s fracture properties. While PPA has been commonly used in the asphalt industry to increase the elasticity and stiffness of asphalt binder, its effects on fracture properties are not thoroughly understood. Fracture as relates to thermal cracking is often associated with asphalt...
Article
R-curves provide the means for in-depth analysis of crack propagation in engineering materials. However, due to experimental costs and difficulties, the application of this approach has been very limited in hot mix asphalt (HMA) investigations to date. In the present research, single edge notched beam (SE(B)) tests are conducted on asphalt concrete...
Article
The coating is one of the most important components that affect the efficiency of the pavements. The uniform distribution of coating has received less attention in pavement design and implementation. Therefore, in this study, an automatic system was presented based on image processing. The quality of the image is first enhanced and then compression...
Article
J-Resistance curves serve as a robust tool in characterizing the entire crack propagation trend of materials. Nevertheless, thus far, investigations on J-R curves of hot mix asphalt (HMA) have been very limited leading to scarce knowledge of post-peak fracture of the mixtures. In this research, mode I single-edge notched beam (SE(B)) fracture testi...
Article
Additives are commonly used in pavement engineering to improve the original bitumen's rheological and mechanical characteristics to meet severe loading and climatic condition requirements. To select the optimum dosage of an additive for modifying the original bitumen, it is essential to predict the viscoelastic behavior of modified bitumens, which...
Article
This study exploits silica and polyphosphoric acid (PPA) synergistic effects to produce air-blown bitumen with desired stiffness and reduced carbon footprint. This in turn enhances the durability of the resulting air-blown bitumen while reducing gaseous emissions associated with its production. Here, we hypothesize that PPA-grafted silica made by a...
Article
Full-text available
Lane change (LC) is one of the main maneuvers in traffic flow. Many studies have estimated LC duration directly by using lane-based data. The current research presents an estimate of LC duration for overtaking maneuver in nonlane-based traffic flow. In this paper, the LC duration is estimated implicitly by modeling lateral speed and applying the le...
Article
Full-text available
In this study, the effect of age, gender, and desired speed (DS) factors on General Motors car-following (CF) behavior was investigated. DS was defined as the speed selected by the driver in free driving situation. A low-level driving simulator was used to collect data. The CF model for each driver was calibrated by genetic algorithm. Gender and DS...
Article
This paper discusses the effects of mixed mode loading on cohesive zone parameters obtained from load-crack mouth opening displacement (CMOD) curves in asphalt mixtures at intermediate temperature. To this end, a coupled viscoelastic numerical-experimental approach has been used to capture the cohesive strength and fracture energy in the fracture p...
Article
In a previous research by authors, a methodology was developed to derive J-R curves for Hot Mix Asphalt (HMA) mixtures using an elastic-plastic approach where a comprehensive understanding of crack propagation regime could be achieved. In this research, the effect of crumb rubber modification of HMA binder is studied in terms of R-curves and crack...
Article
In this research, a sustainable approach is followed to develop efficient mixtures incorporating recycled fine aggregate (RFA) remained from structure demolition as well as limestone filler (LF) from production of hot mix asphalt (HMA). The LF is a byproduct of the drying process in HMA production plant which is not entirely consumed in the product...
Article
Full-text available
There is a general trend toward improving the terminal blend process of producing rubberized asphalt mixtures. Recently, the addition of nanosized materials to strengthen the performance-related properties of terminal blend rubberized asphalt (TBRA) has gained popularity. In this study, the TBRAs were prepared using 8% and 15% crumb rubber and then...
Article
Full-text available
Improving the engineering properties of soils by chemical stabilization and using reinforcement material are means of complying with geotechnical design criteria. Nowadays, the use of chemical materials such as Portland cement and lime has been criticized despite the acceptable effect due to environmental pollution caused by their production as wel...
Article
The objective of this research was to develop prediction models for complex shear modulus (G*) and phase angle (δ) of bitumens modified with crumb rubber, styrene-butadiene styrene, and polyphosphoric acid at low and moderate temperatures. The experiments consisted of three different dosages of each modifier added to the original bitumen followed b...
Article
The pavement distress information is essential for evaluating the pavement. Automatic pavement inspection systems can be so beneficial in providing needed information on pavement conditions. The bleeding is one of the asphalt pavement distresses and directly affects the pavement skid resistance and road safety. This study aims to develop an image-b...
Article
This paper examined the merits of using a polymer nanocomposite containing styrene-ethylene/propylene-styrene (SEPS) and montmorillonite (MMT) clay to enhance bitumen thermomechanical properties. To investigate the effects of hybrid usage of SEPS and MMT on bitumen properties, a series of physiochemical and rheological characterization was performe...
Article
This investigation aims to assess the nano-silica and silica fume effectiveness on engineering clay soils’ characteristics stabilized with cement kiln dust. Laboratory tests, including Atterberg limits, standard Proctor compaction, unconfined compressive strength, and California bearing ratio, were performed. The manufactured specimens were tested...
Article
Mechanical strength and durability properties are two main challenges to the performance of concrete paving. This research focuses on improving the mechanical properties and resistance to surface scaling against de-icing salt by using different cementitious materials such as hydrated lime, metakaolin, and zeolite to rectify the deficiency seen at e...
Article
One method for reducing the rutting failure of asphalt pavements is to modify the asphalt binder with polyethylene. However, the instability and phase separation between components has always been a major problem in achieving a homogeneous asphalt binder–polyethylene combination. To improve storage stability, one solution is to use crosslinking age...
Conference Paper
In this research, a sustainable approach is followed to develop efficient mixtures incorporating recycled fine aggregate (RFA) remained from structure demolition as well as limestone filler (LF) from production of hot mix asphalt (HMA). The LF is a byproduct of the drying process in HMA production plant which is not entirely consumed in the product...
Article
Coarse recycled concrete aggregates (CRCAs) were used as substitutes in asphalt mixtures. These aggregates have a layer of porous cement mortar on their surfaces that impairs their physical and mechanical properties. Therefore, their surfaces were coated with waste plastic bottles to improve their quality. Fatigue cracking, as a critical failure, i...
Article
CO2 emission reduction in large-scale pavement network maintenance planning has been an immense concern. The conventional single-objective optimisation modelsoverlook environmental issues such as CO2 emission. However, the introduced multi-objective optimisation aims to enhance the network condition and minimise CO2 emissions simultaneously. Two si...
Article
Driving simulator (DS) can be introduced as a popular tool in the transport industry for the analysis of driving behavior. Simulators should be validated in term of each specific recorded data, separately. When DSs are the source of data, each part of data which indicates a maneuver or a behavior should be validated separately. This paper is dedica...
Article
The pavement management system (PMS) consists of several components including data collection, analysis, and reporting procedures. This system helps make decisions about the prioritization of road sections and selecting optimal maintenance strategy for the related road pavement networks. Considering the deteriorating rate of pavement sections and t...
Article
Full-text available
This research investigates the microstructural and geotechnical properties, environmental impact, and economic benefit of cement kiln dust (CKD)-treated kaolinite clay with the addition of sodium chloride (NaCl). As a chemical admixture, NaCl is expected to enhance the strength properties of the clay soil stabilized by CKD. To verify this issue, th...
Article
In this research, we presented an energy-based approach to characterize the induced heating properties of asphalt concrete under the electromagnetic field. The induced heating of asphalt concrete under electromagnetic power is an innovative technique in pavement engineering for applications of induced healing, deicing, mixture heating, and improvin...
Article
In the current research, effort has been made to gain a deeper understanding regarding the parameters affecting the dynamic behaviour of a sandy soil reinforced by Waste Tire Textile Fibres (WTTFs) that are produced during the recycling process of the End of Life Tires (ELTs). Such parameters as loading duration, rest time, and aspect ratio of fibr...
Article
Full-text available
This study investigated the effect of waste toner as a cost-effective enhancement modifier on short-term aging and moisture resistance of asphalt binders and mixtures. Moreover, the mechanism of asphalt binder aging and moisture resistance was reviewed, aiming to provide promising evaluation methods for assessing short-term aging resistance of asph...
Article
Nowadays, fiber reinforced concrete (FRC) overlays are used for repairing and reinforcing pavements. In this research, some experimental tests performed to investigate the effects of steel and synthetic fibers on the performance of the concrete overlay. The synthetic fiber in this study is based on Modified Synthetic Polypropylene (MSP) Fiber. Plai...
Article
Automatic systems for pavement inspection can significantly enhance the performance of the Pavement Management Systems (PMSs). Cracking is the most current distress in any type of pavement. Progress of various technologies leads to a lot of effort in developing an automatic system for pavement cracking inspection. In the early image-based systems,...
Article
Full-text available
Moisture damage is a major concern for evaluating the performance of asphalt mixtures. There are different types of experimental methods to determine the effect of moisture on mechanical and durability characteristics of asphalt mixtures. In this study, three different experimental approaches were implemented, including the boiling water test, the...
Article
The induction heating-induced healing of asphalt concrete is an innovative method of crack repairing. As concluded in previous studies, the temperature of asphalt concrete, raised through the induction heating, directly affect the process of the induced healing. As the speculation in this study, not only the temperature level but also the rheologic...
Article
Full-text available
While time headway (TH) is a relatively simple variable and has been well researched, it has been less explored in non-lane-based traffic. The main aim of this paper is considering lateral distance in studying TH in a non-lane-based traffic flow. In this study driving behavior, speed-TH relationship, and the following threshold by using only TH in...
Article
In this research, the effect of polypropylene fibers with polyolefin coating and specimen geometry on the mechanical properties of high-strength concrete (HSC) had been investigated. In this regard, two types of polypropylene fibers (monofilament and fibrillated) with three different lengths of 19, 30, and 50 mm and volume percentages of 0.5, 1, an...
Article
The pollution caused by oil and gas drilling waste is among the major problems affecting the oil industry. In this study, drill cuttings are used as an additive in the asphalt mixture for constructing road pavements. The materials used for manufacturing asphalt samples were neat bitumen with penetration grade 60/70 (PG 64-16), granite aggregates, a...
Article
Three-dimensional numerical finite element (FE) biphasic models verified against the experimental data were developed aiming to study the accuracy of FE modelling in the prediction of viscoelastic properties of crumb rubber-modified asphalt binders. In the numerical models, crumb rubber-modified asphalt binders are considered as a heterogeneous com...
Article
Owing to the soaring environmental threats ensued by the ever-increasing quantities of end-of-life tires (ELTs) across the globe, today the issue of recycling and reusing these waste materials is being discussed by scientists of various fields more than ever. As a main industrial and scientific area, civil engineering is a consumer of new and waste...
Article
Full-text available
Considering the geotechnical problems caused by low strength clayey soils is important in construction projects. Chemical stabilization with additives such as cement is a common method to improve the engineering properties of clay soils. In spite of the acceptable effects of cement on strength of soils, the cost of this additive and its destructive...
Article
Climate variations, especially rainfall, have a high effect on the behavior of drivers and their decision. Due to the high effect of weather conditions on driving as well as human fatalities on road accidents, the importance of investigating driver behavior as a result of climate change is highlighted. This paper examines the variation of hourly av...
Article
Soil improvement by incorporating different reinforcement materials has been one of the most popular fields of study in geotechnical engineering since it can provide the engineers with a practical and relatively easy solution when dealing with various construction projects. Despite numerous studies carried out on the static behavior of reinforced s...
Article
Full-text available
Examination of the criteria for maintaining distance between vehicles helps to better understand the behavior of following behavior and traffic flow .In this study, time headway(TH) and time to collision(TTC) criteria have been studied using driving simulator. TH is divided into two types, including braking TH, TH at the moment of considerable brak...
Article
Full-text available
Cement asphalt emulsion mortar (CEAM) as a critical and complex engineering material for slab ballastless track is widely used in high speed railways and road pavements. Damping and cracking characteristics of CEAM are very important to resist vibration and the deformation caused by repeating loads. Furthermore, Cement is the fundamental constituen...
Book
Full-text available
This book includes nine chapters: Chapter 1: Introduction. Chapter 2: Review of different types of railway slab tracks. Chapter 3: Loading of slab track. Chapter 4: Analysis and design of rail. Chapter 5: Analysis and design of fastening system. Chapter 6: Analysis of concrete slab track. Chapter 7: Design of concrete slab track. Chapter 8:...