Mustafa Tuncan's research while affiliated with Anadolu University and other places
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Publications (73)
The Turkish glass industry, ranked among the first rows in the world, makes every type of production from bottle glass to the flat glass. Nevertheless, there is not any recycling plan related with window glass (soda lime glass). In this study, a patented dry production method of glass foam was explained that consists of crushing and grinding waste...
In this study, an innovative anchoring approach has been developed dealing with all relevant aspects in
consideration of previous works. An ultimate pulling force calculation of anchor is presented from a geotechnical point of view.
The proposed umbrella anchor focuses not only on the friction resistance capacity, but also on the axial capacity of...
An excellent structural material can be produced even on extremely low bearing capacity soils, thanks to the transformation of the water phase into ice formations. However, the application of this process with massive machines for days can lead to unexpected serious problems as well as a loss of time, money and workmanship. Therefore, in this study...
In this study, the stability problem of the landslide occurred at 0.65th km of road that has a 20.00 m width and 4 lanes, which is located at Ciftlikkoy district of Yalova province, was investigated with two different finite element software. Physical and mechanical properties obtained from the in-situ samples were used during the modelling process...
The invention is an application that completely alter the operating principle and load transfer mechanism of the anchorage technique used in the field of civil engineering, in particular at the excavation bracing and slope stability applications with a novel root zone apparatus.
An anchor body is formed by two parts as root zone (bonded length) and the free zone (unbonded length). The main resisting part against the pull out force is the root zone. The similar phenomena is valid for pile or pier foundations, which work according to the side friction arising from external pulling elements. Serious problems can be occur in c...
The invention relates to an undisturbed soil sampler (100) for granular grounds, which allows for undisturbed sampling by artificial soil freezing system in the field of Geo-technical engineering. The invention particularly relates to undisturbed soil sampler (100) which allows for undisturbed sampling in granular grounds (mostly sand and gravel gr...
The invention relates to a jet anchor which ensures the fixation of the lateral support elements on the surface to mass formed by high pressure jet injection with purpose of providing stabilization of the excavation surface during excavation support and slope stability works, said jet anchor provides the combined usage of anchor body (120), ducted...
Changing the natural conditions of soil creates unexpected stress increments in slope stability projects, which are required high amount of soil excavation near the highways and railways or braced cut systems. Some safety problems can occur during this application under different loading cases. In addition, slope stability design requires economica...
Nowadays, concrete filled steel tube (CFST) composite members have in wide range application areas such as transverse beams, piers, slender columns, stub columns, wind turbines etc. around the world. The frictional behavior between concrete and steel tube has a vital role in selection of required size and materials during the laboratory experiments...
This study presents new empirical equations to estimate the initial shear modulus of clean sands under low strains by using soft computing methods. A series of resonant column tests were conducted on clean sand specimens. The effect of various factors, such as effective stress, saturation degree, void ratio and shear strain levels, were considered...
In geotechnical and transportation engineering, especially road constructions in cuts and deep excavation problems are solved by using different supporting excavation methods. Soil reinforcements are chosen due to easy and economic application. In this study, behavior of supported slopes with geotextiles and geogrids were analyzed by performing exp...
Soil improvement is defined as the improvement of the some soil parameters by using different methods when the soil properties are insufficient to prevent static and dynamic loads. The Deep Soil Mixing (DSM) is an in situ soil treatment technology whereby the soil is blended with cementitious and/or other materials. The method has gained its popula...
This study was conducted to estimate the dynamic characteristics of clean sand under low strains using fuzzy expert systems and neural network approximations. A series of resonant column tests were conducted on clean sand specimens to create a large database. The effects of various factors, such as effective pressure, saturation, void ratio and she...
Presence of ground water is a serious problem for cohesive soils in many geotechnical projects. Ground water decreases the bearing capacity of soil layer. However, water can be used as a cementitious material in case of frozen situation with artificial ground freezing. Freezing procedure of cohesive specimens takes long time than non-cohesive soils...
![Table 2 Coefficient of permeability values [5]](profile/Burak-Evirgen/publication/281762828/figure/tbl2/AS:668969551814688@1536506178895/Coefficient-of-permeability-values-5_Q320.jpg)
Artificial ground freezing usage gradually rises in civil engineering applications as a soil supporting system. However, many unknown fundamental parameters have been still waiting discovery, especially for granular soil. Granular soil can not carry its own weight during unconfined conditions. If water turns to ice that locates in the soil pores, i...
Augmentedreality,whichhasbeendesignedtoimprovetheservicesinmanyapplicationdomainssuchasschooleducation,militarywarfare,militarytrainings,industrialmaintenance,retailandmedical,canbedefinedinthesimplestformasaugmentingtherealworldwithinformationfromthevirtualworld.Themainaimofthisstudy,whichpresentsanoverviewofanongoingproject,istodevelopaninnovativ...
Shear strength of a soil can be defined as the maximum shear stress that can resist by the internal forces of the soil. Shear strength must be determined to solve the soil stability problems. The shear strength parameters of the soil are cohesion and internal friction angle. These parameters can be determined in the laboratory by the direct shear t...
Shear strength of a soil can be defined as the maximum shear stress that can resist by the internal forces of the soil. Shear strength must be determined to solve the soil stability problems. The shear strength parameters of the soil are cohesion and internal friction angle. These parameters can be determined in the laboratory by the direct shear t...
![Table 2 Coefficient of permeability values [5]](profile/Burak-Evirgen/publication/269037535/figure/tbl2/AS:667597947293711@1536179162699/Coefficient-of-permeability-values-5_Q320.jpg)
Artificial ground freezing usage gradually rises in civil engineering applications as a soil supporting system. However, many unknown fundamental parameters have been still waiting discovery, especially for granular soil. Granular soil can not carry its own weight during unconfined conditions. If water turns to ice that locates in the soil pores, i...
International construction projects generally involve participants from different cultural backgrounds. In this type of projects, national culture can significantly influence knowledge sharing between individuals. This research contributes to the literature by providing a deeper understanding of cultural issues that influence knowledge sharing in i...
Earthquakes can cause different deformations for different soil types and different earthquake characteristics. Deformations caused by earthquakes can be given as follows: surface rupture, regional subsidence, slope movements, volumetric compression, liquefaction, settlement and bearing capacity failures, horizontal expansions and sand volcanos. In...
Quality control processes require accurate knowledge of in situ compressive strength of concrete. The most widely accepted method of determining the compressive strength of concrete in existing structures is to test core specimens drilled from hardened concrete. The strength level is an appropriate criterion because it is a decisive factor in deter...
The compressive strength test applied to standard samples is one of the most important tests indicating the quality of concrete in structures. The results of the standard tests are compared with the values used in design calculations to check for specification compliance and quality assurance. Although the standard tests are well accepted by the co...
The resonant column device is commonly used in laboratory to determine the dynamic properties of soils. During the resonant column test, a soil specimen is excited under torsional excitation at different frequencies. In this study, the travel times of the shear (S) and the plane (P) waves were measured on Toyoura sand samples at different relative...
Geopolymer is a new class of three-dimensionally networked amorphous to semi-crystalline alumino-silicate materials, and first developed by Professor Joseph Davidovits in 1978. Geopolymers can be synthesized by mixing alumino–silicate reactive materials such as kaolin, metakaolin or pozzolans in strong alkaline solutions such as NaOH and KOH and th...
Cross-cultural training has long been recognized as an effective method to facilitate cross-cultural interaction. Many global organizations provide cross-cultural training to their expatriates to increase productivity in international business. Cross-cultural training can significantly contribute to the success of international construction project...
In recent years, research has been devoted to the control of permanent deformations in flexible pavements. In order to prevent
rutting, fatigue, and low-temperature cracking, different types of polymer modifiers have been utilized. The use of polypropylene (PP)
fibers as a modifier in pavement mix that can be found locally and at low cost compared...
In today's constantly changing global business environment, understanding cultures have become essential and a prerequisite for business success. Understanding and successfully managing cultural differences can provide several advantages for project as well as company success. These concepts become more critical in construction due to the increase...
Cores with diameters of 144,94,69, and 46 mm and length-to-diameter(1/d) ratios of 0.75,1,1.25,1.5,1.75, and 2, were removed from beam specimens produced from eight different concrete mixtures. Compressive strength tests were conducted on a total of 1876 core specimens. Strength correction factors were determined for converting the strength of the...
![Fig. 1: XRD pattern of albite floatation waste [12]](profile/Bekir-Karasu/publication/242312751/figure/fig1/AS:393267234525189@1470773623665/XRD-pattern-of-albite-floatation-waste-12_Q320.jpg)
In the present study, lightweight expanded clay aggregates were produced from clay, waste brick powders, albite floatation waste, and coal at various temperatures ranged from 900 °C to 1250 °C. After the production, the physical and microstructural properties of the aggregates were determined. The effect of clay type, treatment (firing) temperature...
The compressive strength of concrete cast in structures is generally determined by standard cube or cylinder tests. However, these standard tests on specimens represent the potential quality of concrete and they should include full compaction. On the other hand, compaction received by concrete structures and standard
specimens may be different. The...
Various concrete mixtures were produced using crushed limestone and river gravels with four different maximum sizes of 10, 15, 22, and 30 mm (0.39, 0.59, 0.87, and 1.18 in.). The 28-day cube strength of concrete mixtures ranged between 28 and 43 MPa (4061 and 6236.6 psi). Beam specimens were cast by these concrete mixtures and cores were drilled fr...
The ready mixed concrete industry is an important part of today's construction business environment. This industry provides the required quality of concrete used in construction works. The production of this concrete has many different operation parts and it is highly essential to obtain the required quality in these operations. The new trend; web-...
In this study, the impact of cyclic wetting and drying on swelling behavior of lime-stabilized clayey soils has been investigated. Swelling potential and swelling pressure tests have been carried out on soil mixtures with various amounts of kaolinite–bentonite clays, and on a high plasticity clayey soil sample. The tests have been repeated after th...
Bottom ash is produced in a dry-bottom coal boiler often found in coal-fired electric power plants. When coal is pulverized to the consistency of powder, blown into the boiler and burned, two by-products are generated. The fine, particulate matter rises with the flue gases and is collected by electrostatic precipitators (ESP). This is called fly as...
The bidding process is one of the most important phases in the construction industry. The major objective of construction companies is to expand business volume by successful bidding on various projects. For this reason, companies must prepare realistic bid proposals. However, the traditional bidding process is time consuming and requires a great d...
Ultrasonic pulse velocity is one of the most popular non-destructive techniques used in the assessment of concrete properties. However it is very difficult to evaluate the test results since the ultrasonic pulse velocity values are affected by a number of factors. In this study a neural network approach has been proposed for the evaluation of concr...
Cores measuring 94 mm and 144 mm in diameter and having length-to-diameter ratios of 2·0, 1·0 and 0·75 were removed from beam specimens produced from different concrete mixtures. Standard cubes and cylinders were also produced from the same mixtures. Compressive strength tests were conducted on 216 standard and 530 core specimens. The test results...
Bricks were produced by using six different combinations of fly ash, flue gas desulphurization gypsum and lime with the addition of 10 wt% water. The products were shaped by means of pressure forming process. The bricks were subjected to steam curing for 6 and 10 hours and then, moist cured until being tested. The compressive strength tests were co...
Jeopolymeric pastes and mortars were produced by using two different fly ashes, sodium hydroxide solution, Na-silicate solution and crushed stone aggregate. The samples were cured at room temperatures and at 40, 60, 80, 100, 160 and 165 °C for 1, 2, 4, 6, 14 and 18 hours. The density, compressive strength and ultrasonic pulse velocity tests were co...
In this experimental study, brick and roof tile clay was combined with albite (Nafeldspar) floatation waste by 10 and 20 wt. % and subjected to heat treatment at the temperatures of 1000, 1100, 1125, 1150, 1200 and 1250 °C and expanded clay aggregates were produced. Then, the specific gravities and water absorption properties
of the aggregates were...
ABSTRACT
In this paper, a new finite-difference-solution technique for solving transient seepage problems with an unknown free surface has been proposed. The governing finite-difference equations were derived using flux conservation in the general case of anisotropic and nonuniform permeabilities and variable grid spacing, and these equations wer...
Concrete is produced by mixing cement, aggregate and water. The aggregates are inert materials and the chemical reactions take place between cement and water. Therefore, the properties of mixing water are very important for the behavior of fresh and hardened concrete. Practically, the water used for drinking is suitable for the concrete production....
According to the relevant literature, the utilisation of different kind of glasses in concrete introduces positive effect on the mechanical behaviour. The factor affecting physical and mechanical properties and chemical endurance of concrete is the amount of structural pores, which form within its structure. Suitable filler materials can be used in...
The purpose of this study was to investigate (a) the effects of rubber and plastic concentrations and rubber particle sizes on properties of asphalt cement, (b) on properties of asphalt concrete specimens and (c) the effects of fly ash, marble powder, rubber powder and petroleum contaminated soil as filler materials instead of stone powder in the a...
The purpose of this study is to investigate certain features of a novel material proposed to serve as an impervious liner in landfills. Various ratios of bentonites and zeolites (B/Z) compacted at optimum water content were tested to determine the strength parameters, permeability, pH, heavy metals and other properties. A B/Z ratio of 0.10 was foun...
The utilization of glass and fly ash as additives in concrete introduces many benefits from technical and environmental points of view. Change in the compressive strength of concrete depends on the aggregate-cement interactions and interface bonding mechanism. It is well known that silica in the glass can be highly reactive with the alkalis in ceme...
In this study, petroleum-contaminated drilling wastes were stabilized by mixing pozzolanic fly ash, lime and cement with them so they could be used as sub-base materials for road construction. This stabilization produced physically, mechanically and chemically stabilized new mixtures. The laboratory study consisted of unconfined compressive strengt...
Consolidation test is conducted in the laboratory by oedometer test equipment. Load is applied step by step with mechanical weights in this test. The load is kept for 24 hours in each step. Sample disturbance takes place during loading and unloading. This also effects the results of consolidation test. In this apparatus, modifications are made to l...
Citations
... A logical low energy consuming air-cooling method was developed by Zhao et al. (2015) thanks to natural climate conditions. Natural gas hydrate sampling methods (Wu et al. 2016) were adopted for the undisturbed sampling of granular soils with differentiated details (Evirgen 2019;Evirgen et al. 2020). ...
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... Due to above-ground traffic restrictions, the undercut method is often used. The decision as to which surrounding soil reinforcement method should be chosen is a technical problem that is frequently encountered [1][2][3]. The surrounding soil layer is reinforced by grouting in the tunnel, freezing in the tunnel, deep ground mixing, or rotary jet blasting [4][5][6]. ...
... Yapılan analizlerde kullanılan değerler Tablo 3'te verilmiştir. Hafif ağırlıklı taşıt yükünü benzeştirme amacı ile 50,00 kN/m düzgün yayılı yük tanımlanmıştır [19]. Her iki durumda da güvenlik sayısının "1,00" değerinin altında kalmasından dolayı kaymanın gerçekleştiği görülmektedir. ...
... Dutta et al. [18], also, came up with an acceptable prediction of the free swelling index of a type of expansive soil, by the aid of the ANN model. In addition, the results of a set of resonant column tests on clean sandy soils as well as the soft computing technique including fuzzy logic and neural networks were effectively employed to predict the shear modulus of the soil [19]. Furthermore, MolaAbasi et al. [16] proved the advantageous use of an ANN model in the prediction of the stress-strain behavior of cemented and zeolite-cemented sand samples and showed that the accuracy of that model is higher than other similar ones in predicting UCS. ...
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... Ultimate tensile strength and an interaction surface between geosynthetic and soil have the most important roles on pullout or slippage capacities. Each type of reinforcement causes a unique failure mechanism, such as sliding or breakage of reinforcement and excessive lateral displacement in the case of insufficient design or incorrect application (1). On the other hand, the length, thickness, and arrangement of soil reinforcement are affected by the material properties and interaction details, in addition to external loading conditions and design service life (2). ...
... [4,10] The width to height ratio of the back-to-back wall has a slight effect on the distribution of the maximum tension in the reinforcement at height. [7,11] Few studies collected data on existing structures which helps to comprehend the standards over BBMSEW. Usually, BBWMSE is constructed with a Narrow footprint ratio of 0.5≤ W/H ≤ 1.0, which says that FHWA has conservatively considered W/H ≤ 1.1. ...
... The evaluation criteria of this test vary between agencies and projects, and its selection must be made by experienced personnel. For those involved in CSL testing, and with little experience with this test, it is recommended to review the criteria presented by Brown et al. (2018) and DFI (Sellountou et al., 2019). All evaluation criteria should specify the parameters used, ranges and number of CSL profiles affected for each concrete rating. ...
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... They allow having any number of experts (copies of the software) in any place at the same time; b) raw materials used in the manufacture of concrete, when employed in certain types of concrete add a lot of complexity to the decisionmaking process in terms of achieving the desired workability, mechanical strength, and durability (permeability, weathering, shrinkage, cracking, etc.). The quality of concrete depends precisely on the proportions of cement, additives, water, and air, considering the type of concrete that is being designed and the environment in which it will be used, see Arioz et al. [6]. The following section of this paper describes the KAMET II methodology used in Aspdin to model the knowledge acquired from multiple knowledge sources. ...
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... As businesses are taking advantage of this globalization drive by going international in most part of the last decades, the cultural or national cultural differences cannot be overemphasized. Companies have to consider the cultural concepts in their daily businesses to operate successfully in the global marketplace Kivrak, Ross, Arslan, Tuncan and Egbu, et al [8]. Value, attitude or perception and behavior customs influence environments that have distinct varieties across individuals in teams or workplaces. ...
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... The 7, 14 and 28 days of freezing time effects on the clay and silt samples are presented by Evirgen et al. (2015a). In total, 54 specimens were evaluated with additional sandy specimens in this section. ...
