Danial Rezazadeh Eidgahee

Memorial University of Newfoundland · Faculty of Engineering and Applied Science

Applicability of geopolymer binder, as one of the environmentally friendly materials in geotechnical constructions, can be evaluated by the compressive strength. Due to the difficulties and time-consuming process of experimental studies, soft computing approaches would be considerable. Feasibility and the performance of the neural network-based gro...

Ferrocement composites are widely used as a novel method for many different structural purposes recently. The uniform distribution and the high surface area-to-volume ratio of the reinforcement of such composites would improve the crack-arresting mechanism. Given these properties, ferrocement is an ideal option as a replacement for some traditional...

The present study describes the bond strength estimation between the FRP strip and the substructure concrete using machine learning approaches. To provide a precise model, a database including 656 single and double-lap direct shear test results was compiled from the literature. Artificial neural networks (ANN) and the combination of ANN with the ar...

The objective of the present study is to develop and evaluate machine learning-based prediction models, employing the Artificial Neural Networks (ANNs), Genetic Programming (GP), and the Combinatorial Group Method of Data Handling (GMDH-Combi), for dynamic modulus (E*) of hot mix asphalt (HMA) estimation. To develop the models, an experimental data...

In recent years, recycled aggregate concrete (RAC) has been used as a suitable solution to solve the problems related to the disposal of construction waste and contribute to sustainable environmental development. However, RAC has defects such as low modulus of elasticity and low compressive bearing capacity, which limits the use of RAC only in non-...

Many communities in northern Nigeria are in serious need of supplementary water supply systems to augment the scanty rainfall in the region with a population of majorly farmers who face a lot of hardship due to acute shortage of water in most part of the year. The aim of this study is to provide a well-designed and reliable dam for irrigation water...

This paper discusses a framework for predicting the flexural strength of prestressed and non-prestressed FRP reinforced T-shaped concrete beams using soft computing techniques. An analysis of 83 tests performed on T-beams of varying widths has been conducted for this purpose with different widths of compressive face, beam depth, compressive strengt...

In an age of depleting earth due to global warming impacting badly on the ozone layer of the earth system, the need to employ technologies to substitute those engineering practices which result in emissions contributing to the death of our earth has arisen. One of those technologies is one that can sufficiently replace over dependence in laboratory...

In this study, artificial intelligence algorithms are proposed for estimating the compressive strength of hollow concrete block masonry prisms, including neural networks (ANN), combinatorial methods of group data handling (GMDH-Combi), and gene expression programming (GEP). To train and test the proposed models, 102 samples of hollow concrete prism...

Textile reinforced mortars (TRMs) are new composite materials which were considered as a proper alternative for fiber reinforced polymers (FRPs) to strengthen various structural elements. In comparison to FRPs, the TRMs have more fire resistance, more environmental consistency and are safer the structural elements because of their better bond to su...

Frequent laboratory needs during the production of concrete for infrastructure development purpose is a factor of serious concern to sustainable development. In order to overcome this trend, intelligent forecast of the concrete properties from multiple data collected from various concrete mixes produced and cured under different conditions is adopt...

In this study, the employment of the gene expression programming (GEP) technique in forecasting models on sustainable construction materials including mineral admixtures and civil engineering quantities (e.g., compressive strength), was investigated. Compared to the artificial neural networks (ANN) based formulations, which are often too complicate...

Utilizing waste materials as an alternative for cement in concrete to reduce its harmful effects on the environment to produce green concrete is interesting for researchers. In this paper, an experimental database including compressive and tensile strength of green concrete, containing Limestone, Granite, Marble and Red Mud powder as waste material...

Composite materials are effective in forming externally bonded reinforcements which find applications related to existing structures repair, attributed to their high strength-to-weight ratio and ease of installation. Among various composites, fibre reinforced polymers (FRP) have somewhat been largely accepted as a commonly utilized composite for su...

The soil fabric can be expressed as a network model. Granular media voids connectivity and constriction size distribution may lead to movement of air, fluids, and solids in the soil, and therefore affect the chemical, physical and mechanical properties of soils. Understanding the soil voids areas and their interconnection might be helpful in unders...

There is an increasing dependence on laboratory testings in solving most of the environmental and highway subgrade failure problems. Thus, it has become necessary to forecast such problems beforehand making use of available machines and data in order to design and monitor future problems relying on predicted parameters. The present work has predict...

Artificial neural networks (ANNs) can be used in soil stabilization aspect of geotechnical engineering. As such, this study aimed at applying the ANNs as a soft computing approach to predict the durability, resistance value and resilient modulus of Nigerian expansive clay also called black cotton soil. A soft computing approach using multilayer per...

Most isolators have numerous displacements due to their low stiffness and damping properties. Accordingly, the supplementary damping systems have vital roles in damping enhancement and lower the isolation system displacement. Nevertheless, in many cases, even by utilising additional dampers in isolation systems, the occurrence of residual displacem...

In this paper, the precision of some existing models for axial compressive strength of circular concrete columns confined by fiber reinforced polymer (FRP) composites is investigated. To achieve this goal, a database of experimentally tested FRP-confined circular cross-section concrete columns is gathered. The database includes columns with various...

Although the best concrete columns are those with circular cross-sections, in most cases, constructing concrete columns with square and rectangular cross-sections in inevitable. Moreover, most of existing concrete columns need to be strengthened to achieve the new codes and design rules requirements. Among existing strengthening techniques, fiber r...

In recent years, the use of composite rebars in reinforced concrete structures has received much attention due to its high corrosion resistance, significant tensile strength, and appropriate non-magnetization characteristics. Due to the lower modulus of elasticity of composite rebars than steel rebars, concrete beams reinforced with composite rebar...

Fiber reinforced polymers (FRP) are one of the most commonly used materials for rehabilitation and retrofit of structures, mainly concrete structures. There are many reported studies on the behavior of these materials under different types of loading and structures. The aim of this study is to declare the challenges and investigate the efficiency o...

Utilizing rubber shreds in civil engineering industry such as geotechnical structures can accelerate generated waste tire recycling process in an economical and environmentally friendly manner. However, understanding the rubber grains strength parameters is required for engineering designs and can be acquired through experimental tests. In this stu...

I‌n r‌e‌c‌e‌n‌t y‌e‌a‌r‌s, a‌p‌p‌l‌i‌c‌a‌t‌i‌o‌n o‌f r‌u‌b‌b‌e‌r-s‌o‌i‌l m‌i‌x‌t‌u‌r‌e‌s h‌a‌s b‌e‌e‌n w‌i‌d‌e‌n‌e‌d i‌n c‌i‌v‌i‌l e‌n‌g‌i‌n‌e‌e‌r‌i‌n‌g p‌r‌o‌b‌l‌e‌m‌s. A‌s a c‌o‌n‌s‌e‌q‌u‌e‌n‌c‌e, a l‌o‌t o‌f s‌t‌u‌d‌i‌e‌s a‌r‌e p‌e‌r‌f‌o‌r‌m‌e‌d i‌n o‌r‌d‌e‌r t‌o u‌n‌d‌e‌r‌s‌t‌a‌n‌d t‌h‌e m‌e‌c‌h‌a‌n‌i‌c‌a‌l b‌e‌h‌a‌v‌i‌o‌u‌r o‌f s‌u‌c‌h m‌i‌x‌t...

Purpose: The aim of this study is to introduce a relatively simple method of probabilistic analysis on the dimensions of gravity retaining walls which might lead to a more accurate understanding of failure. Considering the wall geometries in the case of allowable stress design, the probability of wall failure is not clearly defined. The available f...

Rubber shreds in mixture with sandy soils are widely used in geotechnical purposes due to their specific controlled compressibility characteristics and light weight. Various studies have been carried out for sand or rubber chips content in order to restrain the compressibility of the mass in different structures such as backfills, road embankments,...