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Research paper | 10-April-2013

NEURAL NETWORKS METHOD APPLIED TO THE PROPERTY STUDY OF STEEL-CONCRETE COMPOSITE
COLUMNS UNDER AXIAL COMPRESSION

In this paper, a new type of steel-concrete composite member, concrete-filled core steel tube with outer angle steel plank reinforced concrete stub column, is proposed and a series of nonlinear 3-D(three-dimensional) full-range numerical calculations under axial compression are carried out, some important factors are analyzed, such as the strength of the concrete, the steel tube and the angle steel, the volume ratio of the steel tube and the angle steel to the overall column, position

Jianming Liu

International Journal on Smart Sensing and Intelligent Systems, Volume 6 , ISSUE 2, 548–566

Review | 06-August-2019

THE PRELIMINARY UNIAXIAL COMPRESSION BEHAVIOR OF CORRUGATED COLD FORMED STEEL MEMBERS

1. INTRODUCTION In today’s construction industry, the economic conditions are at the forefront, and fast-to-implement cheap solutions have become widespread. This has been evidenced by RFM (Roll Forming Machine) technology, especially in the light of the steel construction sector. With the machine called RFM, steel or aluminum sheet / sheet sections are inserted in a self-tapping fashion to produce k-span elements. The vault construction systems formed by means of joining and clamping the

Mahmut KILIÇ, Mahyar MAALI, Abdulkadir Cüneyt AYDIN

Architecture, Civil Engineering, Environment, Volume 12 , ISSUE 2, 105–116

research-article | 30-November-2020

THE TORSIONAL AND SHEAR BEHAVIOR OF STEEL FIBER REINFORCED RC MEMBERS

1. INTRODUCTION Concrete is widely used structural material, all over the world. The excellent versatility, availability, and economy of the concrete makes it a pioneer of the construction industry when it is compared to other materials. Beams/columns are one of the main structural elements of building to respond to the effects, such as bending moment, shear, and torsion. Thus, it is important to investigate the relevant behaviors of members [1, 2]. Steel fibers have been used to improve the

Abdulkadir Cüneyt AYDIN, Mahmut KILIÇ, Mahyar MAALI, Barış BAYRAK, Erkan TUNÇ

Architecture, Civil Engineering, Environment, Volume 14 , ISSUE 2, 47–65

research-article | 17-April-2021

EFFECT OF CURING REGIMES ON THE MECHANICAL AND FRESH PROPERTIES OF STEEL FIBER-REINFORCED CONCRETE

classes produced with steam curing [5–8]. In the mixture design, fibers can be also randomly used to tailor mechanical properties in tension zone. To strengthen tension zone [9] and prevent further deterioration of concrete [10], different types of fiber-reinforced concrete draw attention and comprises randomly dispersed fibers [11]. The use of different types of fibers such as steel, glass, and synthetic fibers have provided delaying of additional crack development in concrete through bridging

Oğuzhan ÖZTÜRK, Eren YENIDÜNYA, Ülkü Sultan KESKIN

Architecture, Civil Engineering, Environment, Volume 14 , ISSUE 1, 69–81

Article | 22-July-2019

ESTIMATION OF ENERGY INTENSITY IN INDIAN IRON AND STEEL SECTOR: A PANEL DATA ANALYSIS

India is the world’s third largest consumer of primary energy, which includes fossil fuels like coal, oil, etc. The total primary energy consumption in India in 2015 was 107 Mtoe. India’s total final energy consumption was estimated at 527 Mtoe of which the industrial sectors consumed about 30% (185 Mtoe) in 2013. The Iron and Steel sector is one of the most energy-intensive industries, consuming about 25% of the total industrial energy consumption. The energy consumption in Indian

Anukriti Sharma, Hiranmoy Roy, Narendra Nath Dalei

Statistics in Transition New Series, Volume 20 , ISSUE 2, 107–121

research-article | 31-October-2020

STUDY ON BOLTED AND BLIND-BOLTED SINGLE SHEAR CONNECTIONS OF COLD-FORMED STEEL MEMBERS

1. INTRODUCTION 1.1. Cold-formed steel frames with shear-bolted connections Modern industry increasingly tends towards the so-called industry 4.0, which consists among others on the integration of systems used for design and production. This also applies to steel structures made of cold-formed steel (CFS), where LGS / HGS (Light / Heavy Gauge Steel) systems are more and more popular. These are comprehensive solutions combining the most important elements of the production process: from BIM

Szymon SWIERCZYNA

Architecture, Civil Engineering, Environment, Volume 13 , ISSUE 3, 45–60

Article | 26-August-2018

DEFORMATION MONITORING OF THE STEEL CYLINDER OF CZERSKO POLSKIE - A HISTORICAL WEIR IN BYDGOSZCZ

Weirs are civil engineering structures designed to dam up the stream of water. They are often very old structures subject to preservation care. In order to maintain the level of ground water, it is essential to keep them in good repair. Therefore, weirs require monitoring of their technical condition and geometry. This article contains an elaboration of the results of measurements of the geometry of a steel cylinder which is a major component of the historical weir Czersko Polskie in Bydgoszcz

Jacek SZTUBECKI, Maria MRÓWCZYŃSKA, Małgorzata SZTUBECKA

Architecture, Civil Engineering, Environment, Volume 9 , ISSUE 3, 105–110

Article | 28-August-2018

INNOVATIVE STEEL FIBERS AND THEIR EFFECT ON FIBER DISTRIBUTION IN BEAMS - EXPERIMENTAL INVESTIGATIONS

This contribution presents experimental investigations on fiber reinforced concrete (FRC). A new type of straight steel fibers (company Feel Fiber) with a length of 60 mm was used. 12 beams with a length of 6 m, a height of 0.4 m and a width of 0.5 m were produced, in order to determine the fiber distribution along them. The beams differ in the manufacturing method (cast in layers or from one side), the fiber content and the way of fiber addition. After concretes hardening, slices were cut of

Michael HUSS, Nguyen Viet TUE

Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 3, 103–108

Article | 15-March-2021

MIXED WELDING OF THE MOBILE CONSTRUCTION PLATFORM IN THE AUTOMOTIVE INDUSTRY

This paper examines the possibility to improve mixed weldability of pins to mobile platforms. There is an increasing demand for mixed joints made of hard-weldable steel used in civil engineering and the automotive industry. A good example of this is welding of movable platform elements such as a pin to arm joints. The pin is very often made of yield structural steel S690 QL (1.8928), while the arm of the movable platform is mainly made of DOCOL 1400M steel from the AHSS group (advanced high

Tomasz WĘGRZYN, Bożena SZCZUCKA-LASOTA, Jan PIWNIK, Adam JUREK, Krzysztof Ireneusz WILCZYŃSKI

Transport Problems, Volume 16 , ISSUE 1, 29–38

Article | 26-March-2020

AHSS STEEL WELDING WITH MICRO-JET COOLING IN MOBILE PLATFORMS

Tomasz WĘGRZYN, Bożena SZCZUCKA-LASOTA, Jan PIWNIK, Adam JUREK

Transport Problems, Volume 15 , ISSUE 1, 131–140

Research Article | 24-February-2017

MODELLING STUDIES ON THE USE OF ALUMINIUM ALLOYS IN LIGHTWEIGHT LOAD-CARRYING CRANE STRUCTURES

Summary. The article presents the results of numerical analysis whose aim was to compare the basic dynamic and strength parameters of lightweight load-carrying crane structures made of aluminium alloys and steel. The analysis covered the typical construction of workshop cranes with a span of 3 to 5 meters, girders in the form of an I-beam and maximum load capacities amounting to 5 tons. The values of stresses, deflections and natural frequencies were compared and then matched with the masses of

Damian GĄSKA, Tomasz HANISZEWSKI

Transport Problems, Volume 11 , ISSUE 3, 13–20

research-article | 30-November-2019

EFFECT OF RANDOM STRENGTH PARAMETERS OF FLANGE STEEL ON BENDING RESISTANCE AND DEFLECTIONS OF GIRDERS WITH CORRUGATED WEB

with the compensation for bending and shear resistance of girders are observed for plate girders with corrugated webs. There is also no reference to random parameters of steel used in flanges and their effect on bending resistance of plate girders. The possible effect on displacements particularly of long girders is an important parameter. In the case of plate girders with corrugated webs, flanges are manufactured from flat sheet steel S235JRG2 or S355J2+N. Flanges made of steel S275 are available

Witold BASIŃSKI

Architecture, Civil Engineering, Environment, Volume 13 , ISSUE 4, 47–60

research-article | 30-November-2017

SHEAR CAPACITY OF PRESTRESSED FRC BEAMS WITH SPARSE STIRRUP SPACING

rectangular cross-section that works together with an in-situ reinforced concrete slab in the final state. Shear reinforcement was completely neglected for beam type T90 while other beams included stirrups with partially sparse spacing (compared to the requirements of EC2) at their support region only. In each beam, Dramix steel fibre reinforcement was applied. Typical shapes, cross-sections and main dimensions of analysed beams are illustrated in Fig. 1. Applied concrete grade, longitudinal reinforcement

Kálmán KORIS, István BÓDI

Architecture, Civil Engineering, Environment, Volume 11 , ISSUE 1, 81–88

Article | 28-August-2018

PARAMETRIC SHAPING OF CONSISTENT ARCHITECTURAL FORMS FOR BUILDINGS ROOFED WITH CORRUGATED SHELL SHEETING

The paper presents a method for a parametric shaping of innovative building free forms covered with corrugated steel shell roofs and flat glass elevation walls. Each shell roof is made of plane steel sheets folded in one direction and transformed elastically into spatial shape. The obtained shapes can be really diversified sectors of various ruled surfaces. Therefore there is a great need for creating such a method that leads to a fine integration of the shapes of a free form shell roof and

ABRAMCZYK Jacek

Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 3, 5–18

Article | 01-September-2014

PYROEFFECTS ON MULTIPHASE MAGNETO-ELECTRO-ELASTIC SENSOR PATCH BONDED ON MILD STEEL PLATE

The magneto-electro-elastic (MEE) material under thermal environment exhibits pyroelectric and pyromagnetic coefficients resulting in pyroeffects such as pyroelectric and pyromagnetic. The pyroelectric and pyromagnetic effects on the behavior of multiphase MEE sensors bonded on the top surface of a mild steel plate under thermal environment is presented in this paper. The aim of the study is to investigate how samples having different volume fractions of the multiphase MEE sensor behave due to

P Kondaiah, K Shankar, N Ganesan

International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 3, 1134–1155

Article | 18-June-2020

STEEL RELIEVING CONSTRUCTIONS IN MINING AREAS AS TEMPORARY OR PERMANENT RAILWAY BRIDGES

underground coal mine; interruptions of railway traffic longer than 4 working days (5 consecutive days) are unacceptable. This article has basic information about the effects of mining impacts, bridge-type steel relief constructions and a theoretical introduction enabling analysis of interactions of temporary supports and embankment in mining areas. All examples, especially the third one, contribute to development of knowledge in the field of civil engineering and transport.

Piotr BĘTKOWSKI

Transport Problems, Volume 15 , ISSUE 2, 107–118

research-article | 30-November-2017

RANDOM STRENGTH PARAMETERS OF STEEL CORRUGATED WEBS AND THEIR INFLUENCE ON THE RESISTANCE OF SIN PLATE GIRDERS

. The hot-rolled flat sheets have the minimum mill-guaranteed yield strength of Remin = 235 MPa [22]. Remin is determined merely on the basis of investigations into steel samples that were conducted prior to corrugation. Steel sheets with the yield strength lower than 235 MPa are rejected. The manufacturer of corrugated webs ensures that the yield strength is Re = 215 MPa [16]. That corresponds to design strength fd for structural components made of St3SX steel with the thickness below 16 mm acc

Witold BASIŃSKI, Zbigniew KOWAL

Architecture, Civil Engineering, Environment, Volume 11 , ISSUE 3, 65–77

Article | 20-July-2021

The effect of electro-thermal treatment of stainless steel arch wire on mechanical properties and cell proliferation

Background: Electric resistance heat treatment may be performed on orthodontic arch wires, but it remains unclear whether this procedure reliably provides better mechanical properties or whether an austenite phase transition affords less cytotoxicity and less arch wire width change. Methods: Stainless steel (SS) arch wires of 0.017 × 0.025 and 0.019 × 0.025 inches in size were heat-treated using a spot welder for eight seconds at power settings of 2, 4, 6 and 8. The surface

Yingzhi Gu, Xianju Xie, Hongmei Wang, Rui Zhuang, Yuxing Bai

Australasian Orthodontic Journal, Volume 36 , ISSUE 1, 75–86

research-article | 30-November-2017

AN ADVANCED APPROACH TO DERIVE THE CONSTITUTIVE LAW OF UHPFRC

/m3. The average density measured on specimens with 1 vol% of steel fibres was 2403 kg/m3. Measured values varied between 2375 kg/m3 and 2440 kg/m3. Mean values measured on different types of specimens were between 2391 kg/m3 and 2407 kg/m3. The average density measured on specimens with 2 vol% of fibres was 2466 kg/m3. Measured values were between 2442 kg/m3 and 2485 kg/m3. Mean values measured on different types of specimens were between 2453 kg/m3 and 2472 kg/m3. According to these measurements

Tamás MÉSZÖLY, Norbert RANDL

Architecture, Civil Engineering, Environment, Volume 11 , ISSUE 1, 89–96

Research Article | 02-February-2017

ELECTRODES WITH VARIOUS AMOUNT OF NICKEL FOR TRUCK FRAME REPAIRS

Summary. The goal of this paper is to analyze the exploitation and safety conditions of weld steel structure of car body truck frames after welding repairs made by covered electrodes. The main role of conditions in connected with materials, alloy elements in steel and filer materials, welding technology, state of stress and temperature. Because of that, good selection of steel and choice of welding method for proper steel structure repairs are very important. For responsible steel, structures

Michał MIROS, Wojciech MAJEWSKI, Jan PIWNIK, Tomasz WĘGRZYN, Adam KONOPKA

Transport Problems, Volume 11 , ISSUE 4, 21–27

Article | 30-March-2018

LASER WELDING WITH MICRO-JET COOLING FOR TRUCK FRAME WELDING

The aim of this paper is to analyse the mechanical properties of the weld steel structure of car body truck frames after laser welding. The best welding conditions involve the use of proper materials and alloy elements in steel and filer materials, in addition to welding technology, state of stress and temperature of exploitation. We present for the first time the properties of steel track structures after laser welding with micro-jet cooling. Therefore, good selection of both welding

Jan PIWNIK, Bożena SZCZUCKA-LASOTA, Tomasz WĘGRZYN, Wojciech MAJEWSKI

Transport Problems, Volume 12 , ISSUE SE, 107–114

Article | 28-August-2018

STRUCTURAL BEHAVIOR OF NORMAL AND HIGH-STRENGTH CONCRETE WALLS REINFORCED WITH GLASS FIBER-REINFORCED POLYMER BARS UNDER ECCENTRIC LOAD

The solution of using glass fiber reinforced polymer (GFRP) bars, as reinforcement in concrete structures to overcome the problems created by steel corrosion, is now widely accepted because of both its non-corrosive nature and good results shown by large investigation efforts. In this paper twenty tests had been conducted on reinforced concrete wall specimens of (800 mm height x 450 mm width x 50 or 70 mm thickness effective dimensions). Four specimens were reinforced with steel bars to be

Yaarub Gatia ABTAN, Hassan Falah HASSAN

Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 2, 55–63

Article | 28-August-2018

RESEARCH ON THE NEW CFRP PRESTRESSING SYSTEM FOR STRENGTHENING OF RC STRUCTURES

The paper presents a research on the new Polish CFRP prestressing system for strengthening of reinforced concrete structures. The system is called Neoxe Prestressing System II (NPS II). NPS II consists of two main elements: a special steel anchorages mounted on both ends of a single CFRP strip and a tensioning device. The anchorage is made of two steel plates. CFRP strip end is fixed between steel plates through bonding by epoxy resin and gripping by bolts. The tensioning device compatible with

Bartosz PIĄTEK, Tomasz SIWOWSKI

Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 3, 81–87

Article | 27-August-2018

CHEMICAL REDUCTION OF NITRATES IN THE WASTEWATER FROM 2-EHN PRODUCTION

The objective of the research was to determine the efficiency of nitrate removal from wastewater from 2-ethylhexyl nitrate production using chemical reduction process. The average concentration of nitrate nitrogen in raw wastewater was about 5.2 g/dm3. The processes of chemical reduction were conducted both in batch and continuous flow reactor under strongly acid conditions using two reducers: steel swarf, as a source of iron, and technical grade urea. In the batch process the maximum degree of

Krzysztof BARBUSIŃSKI, Maciej ŻOŁNIERCZYK

Architecture, Civil Engineering, Environment, Volume 9 , ISSUE 4, 101–106

Article | 01-December-2014

NUMERICAL ANALYSIS OF SLIDING FRICTION COEFFICIENT AND THE NORMAL PRESSURE BETWEEN THE CABLE WIRE

In this paper, the wire pressing device is designed, the range of true positive pressure, curves of steel friction coefficient changes with positive pressure. Describe the change trend of friction coefficient is: with the increasing pressure, friction coefficient of cable parallel wire decreased significantly, but when the pressure increases to a certain value, the friction coefficient decline is slowing down, and finally tends to a certain value. The curves of friction coefficient changes with

Zhu Hui-ling, Zhu Xin-yin, Wang Yu-lin

International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 4, 1773–1788

Article | 27-August-2018

OPTIMIZATION OF TRUSSES WITH SELF-ADAPTIVE APPROACH IN GENETIC ALGORITHMS

This paper presents a genetic algorithm method for the optimization of the weight of steel truss structures. In the method of genetic algorithm integer encoding of a discrete set of design variables and novel self-adaptive method based on fuzzy logic mechanism are applied for improving the quality and speed of optimization. Self-adaptive method is applied simultaneously in the selection of chromosomes and to control basic parameters of genetic algorithm. The algorithm proposed in the work was

Krzysztof GRYGIEREK

Architecture, Civil Engineering, Environment, Volume 9 , ISSUE 4, 67–78

Article | 24-June-2021

EXAMINATION OF MECHANICAL PROPERTIES OF WELDS OF DOCOL 1200M TOWARD APPLICATION IN COMPONENTS OF SPECIAL VEHICLES

The paper focuses on modern martensitic steel (Docol 1200M) and its joint manufactured by means of welding process supported by micro-jet cooling for special vehicles’ structures. Docol 1200M is a type of material denoted as AHSS (A- advanced; H - high; S – strength; S - steel) with important material characteristics, which allows the potential to reduce the weight of the construction of transport means. The paper verifies if the use of micro-jet cooling after MAG welding process

Bożena SZCZUCKA-LASOTA, Tomasz WĘGRZYN, Tadeusz SZYMCZAK, Adam JUREK, Jan PIWNIK, Krzysztof Ireneusz WILCZYŃSKI

Transport Problems, Volume 16 , ISSUE 2, 33–43

Article | 20-July-2021

The resistance to axial dislodgement of nickel titanium compression arch wire hooks – an in vitro study

× 0.020”) and rectangular (0.016 × 0.022”, 0.019 × 0.025”, 0.021 × 0.025”) stainless steel (Rocky Mountain Orthodontics), nickel titanium, or β-titanium (Hespeler Orthodontics) arch wires. The forces required to displace the hooks were recorded using an Instron tensile testing machine. The data were compared with the results reported in similar studies on stainless steel crimpable arch wire hooks. Results: The forces required to dislodge the

Agneta Linder-Aronson Karsten, Carl-Magnus Forsberg, Martin Öberg

Australasian Orthodontic Journal, Volume 35 , ISSUE 1, 21–26

Article | 24-November-2017

POSSIBILITIES OF INCREASING THE DURABILITY OF CHAIN WHEELS OF ARMOURED-FACE CONVEYORS

The main objective of the study was to demonstrate the possibility of replacing the materials of domestic and foreign production currently used for chain drums with alternative materials. ADIs were selected as materials that may replace the cast steels used so far. L35GSM cast steel, commonly used for mining chain wheels and austempered ductile iron, conforming with the requirements of EN-GJS-1400-1 quality grade were subjected to wear tests. On the basis of the experimental studies it has been

Andrzej N. WIECZOREK

Transport Problems, Volume 12 , ISSUE 3, 71–82

Short Communication | 07-June-2016

Cytotoxic and Bacteriostatic Activity of Nanostructured TiO2 Coatings

Nanostructures are structures, mainly synthetic (nanosurfaces, cylindrical nanotubes, and nanospheres), which range between 1–100 nm in at least one dimension and can be engineered to a wide range of physical properties. This paper aims to explore the bacteriostatic and cytotoxic characteristics of nano-TiO2 coated specimens of glass, stainless steel and ceramic with different thickness and roughness. The results show that stainless steel and glass specimens with a nano-TiO2 coating

Alessandro Di Cerbo, Federica Pezzuto, Antonio Scarano

Polish Journal of Microbiology, Volume 65 , ISSUE 2, 225–229

Sampling Methods | 20-November-2017

BAYESIAN MODEL AVERAGING AND JOINTNESS MEASURES: THEORETICAL FRAMEWORK AND APPLICATION TO THE GRAVITY MODEL OF TRADE

The following study presents the idea of Bayesian model averaging (BMA), as well as the benefits coming from combining the knowledge obtained on the basis of analysis of different models. The BMA structure is described together with its most important statistics, g prior parameter proposals, prior model size distributions, and also the jointness measures proposed by Ley and Steel (2007), as well as Doppelhofer and Weeks (2009). The application of BMA is illustrated with the gravity model of

Krzysztof Beck

Statistics in Transition New Series, Volume 18 , ISSUE 3, 393–412

Research Article | 15-February-2020

In Situ Monitoring of Temperature Rise in Friction Surface Using Ultrasonic Technique

5 MHz are performed for a steel plate of 30 mm thickness whose single side is being rubbed with a felted fabric plate. The temperature at the friction surface and internal temperature distribution of the steel plate are measured during the rubbing process and the transient variations of the measured temperatures are obtained. Quick temperature rise of approximately 30 K at the friction surface is observed within a few seconds after the rubbing starts. It is noted that the temperatures measured

I. Ihara, S. Aoki

International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–4

research-article | 30-November-2017

CHANGE OF THE GRADE LINE OF BRIDGES CONSTRUCTED WITH CANTILEVER CONCRETING TECHNOLOGY

span lengths, is excessive long-term deflections of the bridge (w > L/800), due to rheological processes in the concrete and in the pre-tensioning steel. For example, if we take the results from Fig. 6, it can be easily said, that the deflection increase is not proportional to the final value w100 = 155 mm, t = 100 years: 25% of the value is already reached after 4 yers of service; w4 = 38.75 mm, 50 % of final results after 13 years; w13 = 77.50 mm, 75% after 32 years; w32 = 116.25 m. It shows that

Czeslaw MACHELSKI, Bartosz PISAREK

Architecture, Civil Engineering, Environment, Volume 11 , ISSUE 2, 65–72

Article | 03-October-2018

STRENGTH ANALYSIS OF EXPERIMENTAL CRANE, USING PROLIFTOR 250 ROPE WINCH AS AN EXCITATION OF A GIRDER

tests in a steel wire rope and subsequent determination of the values of stresses and deflections accompanying the selected test cases for different positions of the vibration inductor using the FE method.

Tomasz HANISZEWSKI

Transport Problems, Volume 13 , ISSUE 3, 131–142

Article | 03-October-2018

SOME GUIDANCE IN THE DESIGNING OF A ROLLER FOR THE AUTOMOTIVE TESTERS

strength in the welding seams in the roller has also been determined. A parametric analysis is accomplished to determine the influence of the thickness of the base steel and the covering ebonite layer on the perimeter change of the outer surface, taking into account the physical non-linearity of the outer layer.

Yulian ANGELOV, Ivo DRAGANOV

Transport Problems, Volume 13 , ISSUE 3, 97–108

Article | 16-December-2013

SYSTEM IDENTIFICATION MODELLING AND IMC BASED PID CONTROL OF IMPRESSED CURRENT CATHODIC PROTECTION SYSTEMS

Impressed Current Cathodic Protection (ICCP) system is the most practical method of cathodic protection systems. This system is widely used to prevent the external corrosion of carbon steel structures; especially those are used in underground oil and gas pipelines. In this paper, the theoretical background, principles and concepts of ICCP systems have been discussed. An effective laboratory scale for ICCP systems was built according to specific concepts has been clarified. Consequently,the

EzzEldin Balla, MohdFua’ad Rahmat

International Journal on Smart Sensing and Intelligent Systems, Volume 6 , ISSUE 5, 2055–2074

Article | 28-August-2018

RESEARCH ON THE LIGHTWEIGHT CONCRETE BRIDGE DECK SLABS REINFORCED WITH GFRP COMPOSITE BARS

arrangements have been applied for static and fatigue tests in shear and flexure. The research has clearly revealed that bridge deck slabs made of LWC concrete and GFRP rebars could be viable alternative for conventional concrete bridge decks with steel rebars. Following the research the first Polish application of LWC bridge deck slab reinforced with GFRP bars took place on a medium-size road bridge.

Agnieszka WIATER

Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 4, 115–120

Research Article | 12-February-2019

TESTS OF JOINTS IN AAC MASONRY WALLS

reference model, which was a model with a traditional masonry bond. In the remaining testing elements, the connection was realized with the use of steel connectors. Various mechanisms of cracking and failure have been observed as well as the behaviour and load-bearing capacity of joints were different. The obtained results encourage to further analyses focused on detailing the joints and application of new methods in the construction of the joints.

Iwona GALMAN, Radosław JASIŃSKI

Architecture, Civil Engineering, Environment, Volume 11 , ISSUE 4, 79–92

Review | 06-August-2019

COMPUTATIONAL DESIGN FOR THE PRESERVATION AND ENHANCEMENT OF HISTORICAL HERITAGE. A PREFABRICATED COVERING PROTOTYPE FOR ARCHAEOLOGICAL SITES IN RURAL CONTEXT

systems of covering, both simple structures of protection and actual museums in situ. For the development of our project, some of these international examples were critically analyzed, and in particular: the protective structure of the domus in the archaeological site of the Ciudad Romana de Clunia in Burgos [4]; the wooden covering of the roman baths of the Illeta dels Banyets in Alicante; the huge steel covering structure of the Roman Villa La Olmeda in Palencia [5]. In the case of the mosaics of

Marco Giorgio BEVILACQUA, Filippo IARDELLA, Marco PALAZZUOLI, Rodrigo Rubio CUADRADO

Architecture, Civil Engineering, Environment, Volume 12 , ISSUE 2, 17–26

Research Article | 15-February-2020

Numerical analysis of ultrasonic guided waves propagation in highly attenuative viscoelastic material

The propagation of ultrasonic guided waves in viscoelastic isotropic material has been investigated. Based on the plane theory, a numerical model of the guided waves propagating is developed in the frequency domain by employing the SFEM (spectral finite element method). To verify the proposed method, thin bitumen on the steel substrate is examined and compared with the single plate in terms of the dispersion and attenuation. From the dispersion and attenuation of the displacement curves, the

Li Hong, Wang Qingfeng

International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–6

Article | 24-March-2018

REINFORCEMENT OF COMPOSITE PIPELINES FOR MULTIPURPOSE TRANSPORTATION

obtained while gluing glass fibers with butvar-phenolic glue. The calculated rupture strength coefficient of strip fiberglass reinforcement and the analysis of monolithic behaviour of metal and reinforcement proved the precondition as to the plasticity of a developed material. The process of force transmission between a steel pipe and fiberglass at ductile stage has been analyzed in the article. While forecasting the work of a pipe on-load, it is necessary to take into account nonlinearity of metal

Liudmyla TRYKOZ, Svetlana KAMCHATNAYA, Oksana PUSTOVOITOVA, Armen ATYNIAN

Transport Problems, Volume 13 , ISSUE 1, 69–79

research-article | 30-November-2018

EVALUATION OF TIME DEPENDENT PRESTRESS LOSSES IN PRETENSIONED CONCRETE MEMBER WITH TOP AND BOTTOM TENDONS

1. INTRODUCTION Prestress losses in a pretensioned concrete member are divided into two groups: immediate and time dependent. The immediate losses include losses due to elastic shortening of concrete, short term relaxation of prestressing tendons, increasing the temperature while curing concrete, friction at the deflecting devices, and seating of strand in the anchorage device. The time dependent losses are losses due to relaxation of prestressing steel, creep and shrinkage of concrete

Vadzim PARKHATS, Rafał KRZYWOŃ

Architecture, Civil Engineering, Environment, Volume 12 , ISSUE 3, 105–112

research-article | 30-November-2017

APPLICATION OF FIBERS FROM END-OF-LIFE TIRES AS A SELF-COMPACTING CONCRETE REINFORCEMENT – AN EXPERIMENTAL STUDY

1. INTRODUCTION The EU citizens used 3.6 millions of tires in 2013 based on ETRMA report from 2015 [1]. The 96% of them were recovered or recycled creating new materials. According to this report one of the material obtained in the recycling process is a steel cord, which can be further used as a concrete reinforcement. However, the data indicating for using the steel fibers reclaimed from the end-of-life tires in concrete elements are limited. The problem is connected with the fact, that even

Małgorzata PAJĄK

Architecture, Civil Engineering, Environment, Volume 11 , ISSUE 1, 105–113

research-article | 30-November-2017

NON-METALLIC REINFORCEMENTS WITH DIFFERENT MODULI OF ELASTICITY AND SURFACES FOR CONCRETE STRUCTURES

1. INTRODUCTION Steel reinforced concrete (RC) is one of the most widely used structural materials in construction. Nevertheless, it is well known that, under certain environmental conditions the corrosion of steel reinforcement can lead to the deterioration or even to the collapse of structural RC elements, requesting expensive repairing and strengthening. This detrimental property of the steel reinforcement directed the interest to alternative reinforcing materials [1–7]. Using FRP material

Sandor SOLYOM, Matteo DI BENEDETTI, Anna SZIJÁRTÓ, György L. BALÁZS

Architecture, Civil Engineering, Environment, Volume 11 , ISSUE 2, 79–88

Article | 09-April-2018

Design of Multi-channel Temperature Control Inspection System Based on PLC

The temperature control system is widely used in the field of industrial control, such as the boiler’s temperature control system in Steel, chemical plants and thermal power plants. For the requirements of remote centralized management and security monitor in temperature control system, a temperature control inspection system consisted by down-computer clew and up-computer , is designed in this paper. In this system, a programmable logic controller (PLC) is use as up-computer, multiple AI

Bi Xueqin, Zhang Liguang, Ma Xiaohui

International Journal of Advanced Network, Monitoring and Controls, Volume 2 , ISSUE 4, 118–121

Article | 26-August-2018

LABORATORY TESTS OF OLD REINFORCED CONCRETE PRECAST BRIDGE BEAMS

Every year all over the world many concrete structures are being disassembled for various reasons. The idea of reuse of whole structural members from disassembled or renovated structures is not a new problem but still it is not well recognized. In Department of Structural Engineering of Silesian University of Technology a wide research program was undertaken concerning acquisition and reuse of steel members [1], RC and PC members [2], [3], [4] and timber ones [5], [6]. Especially reinforced

Szymon DAWCZYŃSKI, Janusz BROL

Architecture, Civil Engineering, Environment, Volume 9 , ISSUE 2, 57–63

Report | 27-August-2018

INNOVATIVE SYSTEMS OF CORRUGATED SHELLS RATIONALIZING THE DESIGN AND ERECTION PROCESSES FOR FREE BUILDING FORMS

An innovative method of shaping free architectural forms of buildings and their morphological systems roofed with complex shells made up of folded steel sheets transformed from plane into shell shapes is presented. An interdisciplinary character of the paper results from the diversity and complexity of the considered issues. Complex morphological systems of the buildings formed of integrated multi-segment shell roofs and plane-walled elevations are achieved with the help of the geometrical

Aleksandra PROKOPSKA, Jacek ABRAMCZYK

Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 1, 29–40

Article | 28-August-2018

RELIABILITY-BASED EVALUATION OF LOSS DUE TO DISTRIBUTION OF NONSTRUCTURAL COMPONENTS IN HEIGHT

nonstructural components in comparison to structural ones. This paper addresses the question of how to distribute nonstructural components in height of a building accounting for more reliable economic loss subjected to seismic excitation through application of fully probabilistic reliability approach. This purpose has been captured through proposing a new modified distribution of building nonstructural components in height for three typical steel moment frames and conducting comparative assessments for two

Leila HAJ NAJAFI, Mohsen TEHRANIZADEH

Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 2, 77–98

Article | 01-September-2012

TRANSIENT DYNAMIC BEHAVIOR OF TWO PHASE MAGNETO-ELECTRO-ELASTIC SENSORS BONDED TO ELASTIC RECTANGULAR PLATES

Transient dynamic behavior of Magneto-electro-elastic (MEE) sensors bonded to a mild steel plate using 3D magnetic vector potential approach is presented. The electric field induced by time varying magnetic field is non-conservative and can be described by electric scalar potential and magnetic vector potentials. The aim of the study is to find how different volume fractions of the MEE composite behave in sensor applications at various locations on the plate subjected to different boundary

B. Biju, N. Ganesan, K. Shankar

International Journal on Smart Sensing and Intelligent Systems, Volume 5 , ISSUE 3, 645–672

Research Article | 15-February-2020

Study on Monitoring Method for Laser Welding Process by using UV and IR sensors

, arc welding and the industrial robotic systems are consisted of laser hybrid welding systems with monitoring system. The laser hybrid welding system with robot was equipped with a laser head and arc welding gun for laser hybrid welding process. The welding joints are butt and Fillet joints. The welding specimens are made from the steel plate and aluminium plate. The quality of welding specimens is tested by observing the shape of the beads on the plate after hybrid welding. The cross-section of

Heeshin Kang, Jiyeon Choi

International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–4

Article | 28-August-2018

REVIVE TO SURVIVE AND DEVELOP. CITY CENTRES OF SHEFFIELD (U.K.) AND KATOWICE (PL)

In the beginnings of 21 century revitalization by means of public open space planning is becoming more and more popular. The purpose of the paper is to juxtapose (not to compare) two European examples of public open spaces created in areas, which are neglected in urban and landscape way: The revitalized centre of the Sheffield post-industrial steel-city in England and the former coal mine area of the present new Silesian Museum in Katowice, Poland. The empirical and analytical methods were

Anna Marta WŁODARCZYK, Michał WŁODARCZYK

Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 4, 53–69

research-article | 30-November-2018

THE EFFECTS OF DEAD LOADS IN CANTILEVER CONCRETING BRIDGES

with regards to the description of the course of the phenomenon. The change in curvature does not have to be an absolutely smooth function, as is the case in a steel rolled beam that is loaded with a uniformly distributed force. Local disturbances of function κ(x,t) can also be a result of changes in the structure of concrete, e.g. scratches or local slipping of cables. In the interpretation of the results it is necessary to realize that the result of calculations in the form of function κ(x,t

Czesław MACHELSKI

Architecture, Civil Engineering, Environment, Volume 12 , ISSUE 1, 109–120

Article | 08-December-2019

DEVELOPMENT OF A LOW-COST MEASUREMENT SYSTEM TO DETERMINE 3-DIMENSIONAL PEDAL LOADS DURING IN-SITU CYCLING

the bicycle characteristics needs to be discovered to create guidelines for bicycle construction and usage. This paper presents the design of a low-cost measurement system to analyse three-dimensional pedal loads in function of the pedal cycle by an instrumented pedal and an absolute encoder fixated on the crank. The pedal proposed is a combination of a unique steel sensor with twelve sensor regions, organized in four full Wheatstone bridges, installed on a standard pedal spindle. The pedals are

Sien DIELTIENS, Jordi D’HONDT, Marc JUWET, Mark VERSTEYHE

Transport Problems, Volume 14 , ISSUE 4, 151–160

research-article | 30-November-2017

EXPERIMENTAL INVESTIGATIONS OF PULL-OUT BEHAVIOUR OF SYNTHETIC FIBRES

precise approximation of the experimental load-displacement curves for FRC beams. Few analytical models for the pull-out of synthetic fibres can be found in the literature [8 and 9]. The existing models are not supported by comprehensive experimental investigations. A more detailed analysis can be found for steel fibres [10], however, the question arises whether the existing models can be applied for synthetic fibres. 2. TESTING METHOD, EXPERIMENTAL RESULTS Although the pull-out of fibres in a FRC

Mária Erdélyiné TÓTH, Anikó PLUZSIK, Tamás PLUZSIK, Bálint MORLIN

Architecture, Civil Engineering, Environment, Volume 11 , ISSUE 2, 89–95

Article | 30-July-2021

Comparison of the static frictional resistance and surface topography of ceramic orthodontic brackets: an in vitro study

Objectives: The aim of this study was to investigate the frictional resistance (FR) and surface topography of newly available polycrystalline alumina (PCA) ceramic brackets characterised by a yttria-stabilised zirconia (YSZ) coating of the slots, compared with monocrystalline alumina (MCA) ceramic brackets and stainless steel (SS) brackets. Methods: The FR was investigated using a universal testing machine. The test groups included PCA (Clarity Advanced, 3M Unitek, CA, USA) and MCA (Inspire Ice

Mai AlSubaie, Nabeel Talic

Australasian Orthodontic Journal, Volume 33 , ISSUE 1, 24–34

Article | 20-July-2021

A survey of retention and retainer practices of orthodontists in Australia

carried out by 19.1–19.8% of orthodontists while 28.9–43.6% were ‘not happy’ for general dental practitioners (GDPs) to continue retention checks. Adjunctive retention practices were used by 25.6–72.8%. Pre-fabrication TR sheet thickness of 1.0 mm (68%) and polypropylene co-polymer/ethylene material type (55.8%) were most commonly used. Vacuum-forming was the preferred mode of TR fabrication by 48.4%. ‘Stainless steel single strand round’ was the most commonly

Maurice J. Meade, Craig W Dreyer

Australasian Orthodontic Journal, Volume 35 , ISSUE 2, 174–183

Article | 20-July-2021

Galvanic coupling and mechanical properties of low Ni orthodontic brackets with representative types of orthodontic wires

Aim: To characterise the mechanical properties and galvanic coupling of Ni-free orthodontic brackets with stainless steel (SS) and Nickel-Titanium (NiTi) orthodontic wires. Methods: Three Ni-free bracket types (Topic [TOP], Equilibrium [EQU] and Orthos [ORT] made of Ni-free alloys), one conventional (Mini 2000 [MIN]) made of SS alloy and an SS and a NiTi wire were examined in the present study. All brackets and wires were embedded in epoxy resin and, after metallographic grinding and polishing

Géraldine Kummer, Georgios Polychronis, Spiros Zinelis, Theodore Eliades

Australasian Orthodontic Journal, Volume 35 , ISSUE 1, 53–60

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