bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of Corrosion Damage of Concrete
Authors: Zhdanova Tatiana , Larionov Evgeniy 
Published: November 2019

Abstract
Corrosion damage of structural materials caused by their interaction with the environment is one of the significant factors of degradation of the strength characteristics of these materials. Since this brings a significant reduction in the bearing capacity of structures, when calculating their long-term operation, it is certainly necessary to take into account corrosion damage. Among the effects of the environment on the concrete, a significant place belongs to chemical corrosion, determined by the dynamics of the corrosion front moving deep into the concrete. In this paper, according to some models, the depth of chemical corrosion damage of concrete structural elements (beam, column) is estimated.
Computational Modelling of Cross-Laminated Timber Panels
Authors: Gilewski Wojciech , Glegola Aleksander 
Published: November 2019

Abstract
The paper is dedicated to the qualitative and quantitative analysis of cross-laminated timber (CLT) panels within the theory of orthotropic laminated plate theory. Short description of CLT panels and assumptions of the theory is followed by the selection of examples with some parametric analysis within the Abaqus finite element software. The main conclusion is that the average values for orthotropic parameters of the material (usually used in practice) provides to overestimation of the results and can cause mistakes in the design .
Sensitivity Analysis of Zinc Dose-response Function according to Actual Standard Approach
Authors: Strieska Miroslav , Kotes Peter , Bujnakova Petra , Jost Jozef , Farbak Matus 
Published: November 2019

Abstract
One of the reasons for the decrease in reliability of constructions is the corrosion of carbon steel. Many members are made from carbon steel as embedded reinforcement in reinforced concrete (RC) members, steel structures, steel bearings, barriers, rails, etc. These members from carbon steel can be protected by zinc coating. In these cases, the zinc coating layer provides the passive stage during which the steel does not corrode. Therefore, the first-year corrosion rate, as well as the speed of the corrosion during many years, is a very significant parameter for determination of the decreasing the reliability of structure in time. The determination of the corrosivity of the atmosphere can be either on specimens exposed under outdoor conditions or by calculation, according to so-called dose-response function, based on environmental information observed from the public´s hydrometeorological institutes. The paper is focused on sensitivity analysis of zinc dose-response function rcorr,ZN in the range of input parameter recommended either in the standard STN EN ISO 9223 or in the range of measurement by Slovak Hydrometeorological Institute – SHMI.
Hydro-thermal Analysis of Building Envelope Walls with Cement-Stabilized Rammed Earth Structural Layer and Different Thermal Insulators and Their Positioning in Humid Continental Climate
Authors: Narloch Piotr , Protchenko Kostiantyn , Cichocki Damian 
Published: November 2019

Abstract
The objective of the work is to analyse thermal insulation positioning in a building envelope wall with a load-bearing layer made of cement stabilized rammed earth (CSRE) in a humid continental climate. In the article CSRE is described and recommendations regarding the wall thickness of this material are presented. The results of the CSRE coefficient of thermal conductivity and current standard values of the heat transfer coefficient for external walls in various countries of a humid continental climate are also presented. On this basis, the thickness of the necessary thermal insulation in building envelope partitions with a load-bearing layer of CSRE is estimated. In the latter part of the article, the results of the simulation of hydro-thermal conditions occurring in partitions with a load-bearing layer of CSRE insulated with different types of thermal insulation placed in different parts in the partition are presented. The simulations have shown that in a humid continental climate the best solution is the use of thermal insulation on the external side of the building envelope.
Analysis of Hollow Shape Semi Rigid Joints Made by Use of Thermal Drilling Technology
Authors: Bednarek Pawel , Rzadkowski Jan 
Published: November 2019

Abstract
The results of numerical and empirical analysis of a new type frame T- joints for rectangular hollow sections are presented. The butt T-joints are designed as connected by screws into bushes formed in the wall of rectangular hollow sections bars by use of a thermal drilling technology. Literature in this subject applies only to joints without additional stiffeners or T-joints with concrete filled hollow steel columns. In the paper deals with the 4 proposals of a new butt T-joints for hollow sections including additional stiffeners. Numerical analyses conducted for the designed new types of T-joints proved that the proposed joints stiffeners lead to higher capacity than in case of unstiffened joint. Experimental verification of the joints behaviour confirmed results of the numerical simulation.
Influence of Weather Changes on Thermo-technical Behaviour of Selected Wooden House Wall Assemblies
Authors: Michalkova Daniela , Durica Pavol 
Published: November 2019

Abstract
Wooden houses became perspective in the building industry. The University of Žilina owns pavilion research, in which the light-weight wooden based envelope structures are tested. They are designed for almost zero-energy buildings. The structures vary in the used materials and their order. This paper deals with the analysis of their performance during exterior boundary conditions changes. The best performance in relation relative humidity has the structure V2, in which is used wooden cladding, ventilated air cavity and thermal insulations Steico Protect and Isover Multimax 030. In terms of the overheating is the structure V5 desired, with light beige render and thermal insulations Isover Twinner, Isover Insulfit and Kingspan Kooltherm.
Choice of Factors Modelling of Concrete
Authors: Varlamov A.A. , Yakobchuk D. L. , Lozhkin I. A. 
Published: November 2019

Abstract
The continued development of the theory of degradation. In this work, the experimental data were processed by the method of factor analysis. Conducted experimental research with the aim of charting the concrete for comparison with a new theory. The paper presents analysis of experimental data. Considered the factors which determine the behaviour diagram of concrete. Treated with own experimental data and data of other authors. Additionally, used the Varimax – method and “bootstrap analysis”. The result was that two factors describe only 60% of the variance. The addition of the third factor allows us to describe the diagram of the concrete by 90%.
Secondary Building Materials Planning System
Authors: Aleksanin Aleksandr 
Published: November 2019

Abstract
The successful operation of construction and demolition waste management requires the development of appropriate planning systems. Today there are a large number of forecasting methods. In the area of construction and demolition waste, it is important to have a forecast not only for the economic effect, but also for the environmental consequences of the rates and volumes of waste generation. The article discusses modern forecasting methods that can be used in the field of construction waste management. The structure of the integrated forecast of the functioning of the territorial system of construction and demolition waste management is proposed, contributing to the rational planning of the development of waste-processing infrastructure in the region.
On the Question of Low-Energy and Green Housing
Authors: Shchepochkina Julia , Akulova Marina , Sokolova Julia , Sokolova Alla 
Published: November 2019

Abstract
People’s mode of life, their professional activity and recreation depend not only on environmental factors including architecture, urban planning of a town or a settlement, but on specific atmosphere formed by the elements that are rather difficult to assess numerically. It also depends on the purity of air, soil and water resources. Generating ever increasing amounts of electrical power is indissolubly related to environmental setting and requires undertaking certain measures. The significant differences between low-energy and green houses have been demonstrated. Construction project should be considered low-energy one if it consumes less energy when in service in comparison with other similar building projects. Correspondingly, green houses are construction projects realized from naturally occurring materials with low conversion rate that could blend in with natural habitat. Every structure with low energy consumption could be considered low-energy house, at the same time, not every low-energy house could be called a green one. When erecting a house, one should take into account not only the benefits of energy saving but also the importance of environmental settings, traditions, customs, and historically developed architectural look of a town or a settlement.
Multidimensional Modelling in the Educational Process Based on the Block Cluster Model
Authors: Zharov Iaroslav , Smirnova Julia 
Published: November 2019

Abstract
In the study of certain technological processes, students lack practice to a large extent therefore it is difficult to understand assimilation of a significant part of the educational material. As part of academic studies there is no opportunity to demonstrate the full technological cycle of construction and installation works. Multidimensional modelling tools, 4D models in particular, redound to demonstrate technological processes with high detail remotely from the construction site, 4D model tools allow to demonstrate how technological solutions can affect the duration of work and the quality of the realized objects. Similarly construction industry where the effect of the introduction of information technology is achieved as the reduction of term and cost of the project taking modern methods and tools in educational processes allow to improve the competence of students. The creation of detailed models with a developed work breakdown structure requires a significant amount of resources, including the time of work of highly qualified design engineers. This article discusses issues of labour costs reducing for the creation of multidimensional models due to applying the cluster system of model formation.
Bidder Multiple Criteria Assessment with Simos Method Use
Authors: Krzeminski Michal , Wojtkiewicz Tomasz 
Published: November 2019

Abstract
The article presents two important issues. The first was to propose a set of evaluation criteria developed on the PMBOK standard. The authors chose the most appropriate five areas from among the nine highlighted and then on their basis proposed evaluation criteria. The second important element was the development of a method of assessment based on the Simosa method and assumptions of the Entropy method. This approach enabled the modification of the weighting vector in the case when, in one criterion, all variants had the same value assigned.
Modification of WPC Materials by Introduction of Dioctyl Phthalate Plasticator
Authors: Matseevich Tatyana , Askadskii Andrey , Kondrashchenko Valeriy 
Published: November 2019

Abstract
The study of the properties of materials of wood-polymer composites (WPC), modified with mineral filler and plasticizer. The materials modified with mineral filler possess very low water absorption of 0.013% compared with 1.25% for ordinary material based on the WPC. The stress relaxation of a modified material was investigated and it was found that the master relaxation curve of the modified sample is located in the stress range from 900 to 1300 MPa, which is higher than for the standard sample. Thermal expansion of samples containing the plasticizer dioctyl phthalate (DOP) is in the range from 26 to 68·10−6 K−1; those, the same as for the control sample that free of mineral filler. The water absorption of the samples plasticized with DOP of 0.013% is also at the level of the samples containing the mineral filler, and significantly less than the water absorption of the control sample. Specific impact strength is 5.8 kJ/m2, flexural strength is 32 MPa.
Numerical Vibration Response of Railway Track Retrofitted with Single Degree of Freedom Rail Dampers
Authors: Michalczyk Rafał , Brzeziński Karol , Zbiciak Artur 
Published: November 2019

Abstract
A concept and preliminary results of numerical study of changes in the rail track dynamic characteristics are presented in the paper. Change of the characteristics is introduced in order to reduce noise emissions. The theoretical relationship between the studied track dynamic characteristics (TDR - Track Decay Rate) and noise was briefly explained, and then the methodology of FEM modelling for the standard test simulation was described. Three mass modification variants and two rail types were analyzed. Damper connection were modeled as viscoelastic joint. The rail track vibrations were analyzed in both (vertical and lateral) directions separately. Numerical study shows correlation between the railroad track mass increase and its dynamic characteristics and thus the noise emission. Applying dampers with proposed parameters results in more efficient vibration and noise mitigation in lateral direction.
Exploratory study on the utilization of recycled wood as raw material for cross laminated timber
Authors: Munandar W A , Purba R H , Christiyanto A 
Published: November 2019

Abstract
Cross-Laminated Timber (CLT) has been gaining interest in recent years as an attractive and environmental-friendly building material. As such, CLT has been used for structural components in building constructions such as apartments, commercial buildings, or offices. CLT predominantly uses newly harvested lumber as a raw material. In this study, however, CLT fabricated using recycled wood was explored for possible utilization in wood structures. The recycled wood was obtained from wooden boxes, wooden pallets, and scrap wood from lumber suppliers, and their mechanical properties were tested. The average tension-parallel-to-grain strength of these recycled woods was 52.2 MPa, while their average compression-perpendicular-to-grain and compression-parallel-to-grain strength were 20.6 and 4.0 MPa, respectively. Four CLT beams of 2 m-length, 100 mm-width, and 130 mm-depth glued with epoxy adhesive were tested to measure their flexural strengths. A set of two CLT beams was loaded on upright and lying positions, and their average flexural strengths were 8.1 and 7.6 MPa, respectively. The effects of lamina lap splices and adhesives on CLT beam flexural strength were studied. Apparently, adding several variations of lap-splices and adhesives has marginal impact on CLT beam flexural strength.
Efficiency analysis of Muskingum-Cunge method and kinematic wave method on the stream routing (Study case: upper Ciliwung watershed, Indonesia)
Authors: Prawira D , Soeryantono H , Anggraheni E , Sutjiningsih D 
Published: November 2019

Abstract
Flood routing is needed to determine the distribution of flood peak time and magnitude of peak flooding that occurs. Flood routing can be done on the river channel using the transform function principle. There are two methods of flood routing in reach that have significant differences based on general concepts and number of data requirements needed, namely Muskingum-Cunge method and Kinematic Wave method. This study aims to evaluate the efficiency of two flood routing methods, Muskingum-Cunge method and Kinematic Wave method using HEC-Geo HMS, the efficiency of each routing method is obtained from comparison of simulation’s hydrograph peak discharge. results with the observation’s hydrograph peak discharge. Results of the comparisons show that Kinematic Wave method give a large peak discharge which is closer to the observation than simulation results with Muskingum-Cunge method. However, difference of result from two methods are not too far from observation, although Kinematic Wave method uses more detailed data. Based on these results, it can be concluded that Muskingum-Cunge method is more efficient than Kinematic Wave method in conducting flood routing because it provides a hydrograph that is close enough to fewer data requirements.
Design of drainage system on industrial area Kampung Cina, Dobo City, Aru Islands Regency, based on Eco drainage using with HEC-RAS 4.0
Authors: Rizaldi B , Idfi G , Suwarno E , Mujiyono  
Published: November 2019

Abstract
This study aim to plan a drainage system in the Industrial area of Kampung Cina Dobo City that can overcome the problems of inundation occurred. The inundation is caused by the drainage channel that has not been properly arranged and is still in the form of a natural drainage channel, most of which still use the road drainage network whose condition is not functioning properly due to sediment and garbage which results in many drainage channels being cut off. Data processing is carried out with two analyzes including hydrological analysis and hydraulic analysis. The hydraulics analysis includes channel section planning and drainage system modeling with HEC-RAS 4.0 software. In conventional drainage discharge flowing in the channel before the end of drain amounted to 1,136 m3/sec. Once added a retention pond with a capacity of 10.358 m3 with 5 scenario dimensions spillway. The results of modeling obtained by the reduction of the maximum flood flow is 1,07 ms / sec with dimensions of aperture is 8 m x 0,8 m and lower the water level in the upstream channel by 31 cm and 44 cm in the downstream channel.
The application of fuzzy logic for profit optimization to contractor project cash flow
Authors: Djatmiko B , Yulistyorini A , Sugandi R M , Setyawan E 
Published: November 2019

Abstract
Profit has become the main goal for a contractor without neglecting other aspects in the content of contract. According to previous empirical studies, profit has been optimized. However, it was optimized not as an output variable. Therefore, in this study we were going to try to position profit as an output variable using Fuzzy logic. The research aimed to: 1) describe cash in and cash out to prepare empirical Project Cash Flow (PCF) statement, 2) develop Fuzzy Mamdani set model on PCF 3) formulate manual method and Fuzzy Mamdani computational programming on PCF, 4) validate the results of manual simulation using computation, and 5) make profit which can be simulated. The results of the study were: 1). Fuzzy Mamdani set model with 4 input variables (%), those were: Direct Cost (7-75), Indirect Cost (2-25), Informal cost (1-15) and Progress (0-100) and single output which was profit (0 - 10); 2). The manual method consisted of 4 stages: (1) creating a fuzzy set of 4 input variables and 1 output variable, (2) making the Application Function Implications based on 2 rules, (3) Composing all output variables with the MAX operation, and (4) Defuzzification using the method of centroid of area, 3). computational way with indicators: Trapezoid membership function, two-type linguistic set (minimum - maximum) and (slow - fast), MISO (Multiple Input Single Output) implication functions, “MAX - DOT” operation system, fuzzy rules (if … and … then) = 16 rules, 4). The output of the manual method and computational method resulted the same profit of 4.46, so it was declared valid, and 5). The simulation revealed that minimum profit can be made if the cash out allocation and progress on input variables are not balanced and in contrast, we will obtain maximum profit if the allocation of cash out and progress are balanced with input variable.
Concepts of constructability for project construction in Indonesia
Authors: Ansyorie M M A 
Published: November 2019

Abstract
A study of constructability has recently become one of the research themes that has received much attention. Constructability can be defined as the application and integration of construction knowledge and experience to the process of planning, designing, procuring and implementing construction. The concept of constructability itself began and developed in the United States in the 1970s. In Indonesia, development in the field of construction services is a priority, especially for infrastructure development. The process of construction work can’t be separated from the process of planning and implementing construction which is part of the concept of constructablity. Through the application of constructability in construction work can be one analysis for the implementation of construction work to get results a good work in accordance with the desired quality. This study is a review of the concept of constructability and its application in building construction industry. The results of this review are expected to be a source of knowledge and reference regarding the concept of constructability that can be applied by stakeholders in construction work.
Integrated CAD customization system for fused deposition models in additive manufacture with 3D printing machine
Authors: Achdianto  , Cahyati Sally , Triyono  , Saifudin  
Published: November 2019

Abstract
A computerized addictive aided design based on manufacturing system that is digitally integrated, has been modified, built, and designed. The system refers to the smart manufacturing sectoral (smart manufacturing) which to answer the challenges of industrial revolution 4.0, namely the purpose for efficiency of the distance, cost efficiency, time efficiency, quality improvement and increased flexibility. The concept of manufacturing systems with fused deposition modelling 3D printers integrated with the internet or intranet has been modified, for the purpose to connected each other under one platform being namely as category as a Computer Aided Manufacture (CAM) system. A synthesis between the production room and the customer, real-time depiction of 3D CAD users can be presented and connected directly to the manufacturing locations where the desired product is located. Seeing this as an opportunity growing for the industrial society, the author conducted research to modified and collaborate the system. The method used in this study was carried out with rapid application design or better known as Rapid Application Development/RAD aimed at simplifying and accelerating the design of the system for 3D print web application system. CAD drawings can be processed from the user’s device to the main webserver and then forwarded into the operator’s production system space, resulting in a final product/finished goods, with no restrictions on distance, area and allows low production costs (low production costs). The results of this study represent the manufacturing industrial that is being supported by the application of information technology, where are manufacturing is connected with IoT (Internet of Things). Presenting the benefits of the Industry 4.0 concept. The customization system to be able to add value added for the competitiveness small and medium companies in Indonesia on manufacturing process and can support micro economic growth.