bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigation of the influence of distribution of heavy metals from construction waste disposal on plant associations of adjacent ecosystems
Authors: Dinkelaker N V , Ovsyuk E A , Sinelnikova N A , Muraviev I A , Dinkelaker N F J , Semenova T S 
Published: May 2020

Abstract
The question of influence of distribution of pollution of soils by heavy metals from the landfill on the soil-plant complex of natural ecosystems in the zone of influence of object is investigated. The presence of increased bioaccumulation of heavy metals of certain specialized ecological groups of plants – submerged macrophytes and weed–ruderal plants was revealed. Specificity of accumulation of heavy metals is not a property of plant life forms. However, within plants of one life form there are species with an increased ability to selective accumulation of individual heavy metals, which is especially pronounced in mosses. The results obtained can be used to improve the efficiency of bioengineering protection of the natural environment through environmental planning of landscapes in the areas contaminated with heavy metals around landfills and other industrial facilities.
Modeling the crystallization process of an eutectic solution in cold accumulators of a refrigerated truck
Authors: Belozerov G A , Babakin B S , Suchkov A N , Makarov B A , Babakin S B 
Published: May 2020

Abstract
The duration of crystallization process of an eutectic solution of an infinite plate may be presented as a sum of three components: duration of the cooling process of the eutectic solution of liquid phase τ1
from initial temperature tI
to the crystallization beginning; duration of crystallization process τ2 and duration of the precooling process of solid phase τ3 to certain final temperature t
f in the plate center.
Sustainable Concrete in Transportation Infrastructure: Australian Case Studies
Authors: Gharehbaghi Koorosh , Rahmani Farshid , Paterno David 
Published: May 2020

Abstract
Whilst generally concrete and steel are the most common substances for civil engineering construction, new trends and development such as sustainable and green material have a lesser effect on the environment. Typically, approximately 90% of a concrete structure’s CO2 emissions are a result of the energy consumed during its life, there is much that can be done to reduce that 10% associated with its construction. Thus, innovative engineering materials, such as Recycled Concrete (RC) have emerged with the potential to influence the future of an environmentally sustainable construction industry. This research investigates the RC as the basis of sustainable concrete for civil engineering construction such as roads, rail and so on. Furthermore, number of examples, 6 roads and 6 rail segments in Sydney, were reviewed. Overall, this research found that for the 6 road and rail case studies generally only RC is utilized as the basis of sustainable material. Although, this is a very small sample, however, a pattern can be noticed. Unfortunately, the pattern is the lack of innovative sustainable material other than concrete for such transportation infrastructure. Appropriately, further investigation is required to review the possibility of other sustainable materials including those incorporating waste-by products as the basis consolidated sustainable material usage in transportation infrastructure.
A Study of the properties and microstructure of high-magnesium nickel slag powder used as a cement supplement
Authors: Oksri-Nelfia L , Akbar Reynaldi , Astutiningsih Sotya 
Published: May 2020

AbstractThis research aims to use high-magnesium nickel slag crushed into a powder as a replacement for cement and to study their properties and microstructure in concrete. The particle diameter of the nickel slag powder was obtained lower than 75 μm after a process of crushing and sieving. The specific areas, absolute dry densities and particle size distribution (PSD) were analysed to obtain the physical properties of the material. The techniques applied to study their chemical and mineralogical composition were the X-Ray Florescence (XRF), the Scanning Electron Micrograph (SEM). The OPC type 1 was used as a reference in comparison to the experimental material of this research. Without a chemical admixture, the compressive strength of concrete after 28 days is fc’ 30 MPa and the specific surface area is 4360 cm2/gr. The compressive strength of high-magnesium nickel slag powder is capable of replacing cement by 20% without altering properties of concrete. According to the XRF technique results, the nickel slag contains silica, calcium, magnesia, and alumina. Furthermore, the image of the SEM-EDS illustrated the slag particle to be sharp, irregular, and containing calcium, silicon, alumina, oxygen, and magnesium. This result confirmed that the XRF technique and SEM-EDS were accurate.
Exploring the Mechanism of Residential Attractiveness in Compact Urban Areas – a Case Study of Hong Kong
Authors: Bai Yunxi , Song Jusheng , Wu Shanshan , Lo S M , Bai Gang 
Published: May 2020

Abstract
Compact cities adopt high density, mixed land use and transit-oriented development (TOD). For sustainable development, compact development reduces the use of automobile and lessens the overdevelopment of land resources. For solving urban sprawl and housing shortage, more and more metropolises have adopted compact development. Academics, planners and policy makers mainly focused on evaluating the impacts of neighborhood attributes on housing prices and residential movements. Few have examined the relationships between residents’ demand and residential attractiveness in compact cities. Therefore, this study develops Residential Attractiveness Evaluation (RAE) Model to evaluate the attractive degree of urban areas based on residents’ demand in compact cities. Hong Kong is chosen as the study area which is a typical compact city. The results show that districts near the CBD and both sides of Victoria Harbor have highest residential attractiveness than other areas. Community planners and policy makers should consider residential attractiveness based on residents’ demand in efforts to promote sustainable development. Residential attractiveness is the foundation of residential land use planning and policies. Planners in compact cities should adopt various planning strategies according to different residential attractiveness. Moreover, residential attractiveness is the benchmark of evaluating residents’ satisfaction of new residential planning and policies.
The Same-floor Drainage for Independent Retrofitting of the Existing Apartment Buildings without S-I System in China
Authors: Ning Zhu , Yong Jiang , Qiang Wang , Wenmin Guan 
Published: May 2020

Abstract
By 1998 the total floor area of urban residential buildings was 9.59 billion square meters in China. In this period, most of the apartment buildings in China adopted brick-concrete structure or shear wall structure without SI-system, and limited the integrating means of retrofitting and reuse. Because of the strict control of area standard in urban residential construction at that time, the toilet area is always too small to carry the contemporary life style, which takes the first difficulty within independent retrofitting of the apartment building. Since the same-floor drainage system is widely used many new built apartment buildings, this paper aims to research and develop this system into retrofitting of the existing apartment buildings without S-I system in China. Based on the analysis to the household plans and their retrofitting design, two kinds of same-floor drainage systems are employed within the toilets, solve the problems of pipe connection, floor elevation and waterproof, and succeed to improve the function and space use of whole household.
Factor Analysis of Service Quality of Provincial Contractors to Owner Satisfaction in Construction Projects in Thailand
Authors: Ngowtanasuwan Grit 
Published: May 2020

Abstract
Service quality in construction projects involves the project owner’s perception of the process in terms of interactions, activities, and the attainment of acceptable levels of performance from construction activities. The purpose of this study is to present a factor analysis of service quality of provincial construction contractors in north-east Thailand that influences the satisfaction of project owners, by using Exploratory Factor Analysis (EFA). A total of 132 questionnaires, completed and returned by project owners, were analyzed to confirm the factors. The research found the service quality of the provincial contractors comprised of three factors, namely: (1) empathy, (2) responsiveness, and (3) tangibles, respectively. Guidelines for strategy for improving the service quality of provincial contractors are discussed and presented in the results of this research paper.
Effect of IR Drop on Reinforced Concrete Corrosion Measurements
Authors: Babu U. Raghu , Kondraivendhan B. 
Published: May 2020

AbstractThe ohmic voltage drop (IR) due to the high resistivity of concrete needs to be considered while monitoring the corrosion performance of rebar embedded in concrete. It helps to evaluate the corrosion condition precisely. Concrete mixes were contaminated with chlorides, sulphates, and a combination of chloride plus sulphate solutions as mix water. To assess the IR drop error in corrosion measurements caused by concrete with different salts, linear polarization resistance values were measured with and without IR compensation. The results indicate that the concrete contaminated with 5% of chloride has shown higher error as compared to 2% of sulphates, due to high corrosion current density. However, from the results of chloride and chloride plus sulphate contaminated concrete, it is also confirmed that the IR drop error is not absolute to determine the solution resistance. The higher corrosion in chloride contaminated concrete as compared to chloride plus sulphate contaminated concrete is also observed due to the availability of high chloride concentration. The results of the present study are suggested that the IR drop compensation should be considered when the reinforced structures are exposed to chloride and sulphate environment.
Properties of Fine-Grained Concrete Mixtures during the Construction of Monolithic Structures
Authors: Aruova L B , Ospanova Z N , Gordienko B S , Alibekova N T , Kalieva Zh E , Urkinbaeva Zh I , Nurbaeva M N 
Published: May 2020

Abstract
The article presents the results and methods of studying the rheological properties of fine-grained concrete mixtures with various additives, as well as the regression equation obtained by calculations using the apparatus of mathematical analysis, which shows the significance of the parameters included in the process of compaction of the ICZB. These data are necessary for the correct design and selection of sealing mechanisms in order to obtain the design physical and mechanical properties of ICZB. In many regions of the world there is an acute shortage of high-quality raw materials for large aggregate in conventional concrete, which necessitates its transportation over distances from 400 to 1000 km. In this regard, the cost of one cubic meter of coarse aggregate in many regions is 2-3 or more times higher than the cost of sand, the deposits of which are more common. In addition, obtaining the desired fractions of quality aggregates requires artificial addition and fractionation of the resulting granules. The experience of using ICZB for the manufacture of parts and structures at the plants of ZHBK gave positive results, but in mass construction (hydraulic), he did not get spread due to insufficient study of physical and mechanical properties, weak efficiency of existing vibration equipment, insufficient development of new technological equipment for laying and sealing. In this regard, we believe that the research aimed at studying the physical and mechanical properties of ICZB and the further development of technological equipment, methods of laying and sealing for their widespread implementation, determine the relevance of this problem.
Packing Structure of Binary Particle Compacts with Fibers
Authors: Boribayeva A , Zharbossyn A , Berkinova Z , Yermukhambetova A , Golman B 
Published: May 2020

AbstractFibers have been used to improve the mechanical properties of the asphalt paving mixture. It is known that the enhancement of powder compact mechanical properties is related to the compact packing microstructure. This study focuses on the evaluation of the packing microstructure of powder compacts produced from ternary mixtures of spherical particles and fibers. The discrete element method is employed to generate the compacts of particle mixtures of different compositions under gravity. The compact microstructure is quantitatively characterized by utilizing the developed image analysis technique to approximate the size distribution of voids among particles in X, Y and Z directions. As a result, the denser packing was obtained with a greater fraction of small spherical particles. The inclusion of fibers resulted in the high-density compact with uniform distribution of small size voids.
Shear Strengthening of T-Section RC Beams Using Double-Side Externally Bonded CFRP
Authors: Alfarra Hazem , Maalej Mohamed , Barakat Samer 
Published: May 2020

Abstract
This paper aims at investigating the effect of S-wrap EB-CFRP to shear-strengthen RC T-beams. The experimental program included seven 3.3m-span T-beams that were tested under three-point loading. The specimens were divided into two major groups, including four specimens with no steel stirrups (Group 1), and three specimens with steel stirrups at half of the effective depth (d/2) center to center spacing (Group 2). Five of the seven specimens were strengthened in shear using S-wrap EB-CFRP strips used at d/4 and d/2 spacings. The shear capacity, maximum deflection under the applied load, failure mode, and the strain development in the CFRP strips, steel stirrups, and the main tensile reinforcement were reported in this paper. The overall results show that the addition of EB-CFRP strips to T-beams is an effective method of enhancing the shear capacity of T-Beam in the absence of steel stirrups. With the presence of steel stirrups in the T-beams, the contribution of the EB-CFRP strips in enhancing the beams’ shear capacity appears to be small relative to that of steel stirrups.
Effectiveness of Splitter Plate in Suppressing the Flow-Induced Vibration of a Circular Cylinder
Authors: Kamarul’Arifin Ilya Qurratu’Ain Binti , Quen L K , Kang H S , Tan L K , Othman Nor’ Azizi bin , Siow C L 
Published: May 2020

Abstract
The effectiveness of splitter plate as suppression device in reducing the flow-induced vibration (FIV) of a circular cylinder was conducted experimentally. The parameter used in this experiment is the gap separation between splitter plate and the circular cylinder (G/D). The control element of gap separations are varied from 0.5 to 2.0. The experiments were conducted in the wind tunnel which was free from external wind conditions at Aeronautical and Wind Engineering Laboratory (AEROLAB), UTM Kuala Lumpur. A supporting structure was designed and fabricated with the purpose to allow free vibration induced by wind on the circular cylinder. The results were analysed through the response of amplitude and power spectral density of the circular cylinder with splitter plate and compared with bare circular cylinder. For the gap separations of G/D = 1.0, 1.5 and 2.0, the vibration of the circular cylinder were successfully suppressed. The optimal distance for gap separation was at G/D = 1.5 with suppression effectiveness of 82%. For G/D = 0.5, on the contrary, the vibration of the circular cylinder was amplified. As conclusion, splitter plate can function to suppress as well as amplify the vibration of cylinder, depending on the gap separation.
Analysis of Infilled Masonry Wall in Steel Frame Subjected to Lateral Loading by Experiment and FEM Software
Authors: Bhosale Suraj D , Desai Atul K 
Published: May 2020

Abstract
This paper describes the behaviour of infilled masonry wall in steel frame subjected to lateral loading. Construction of RCC structure is quite slower than Steel structure, though the cost of steel structure is high but time required for construction is less, moreover for temporary structure steel member and section are use on large scale as it can be reused also. In this study a rectangular steel frame of IS section ISMC 250 is made and lateral loading is applied through jack. Frame is infilled by fly ash units with thin mortar joint. Axial load is also applied on frame simultaneously, during experiment and data is analysed, same full scale model is simulated in FEM tool and result were compare and found that they valid each other, it was observed that in steel frame initially bond between masonry and steel frame section get separated and it try to overturn the masonry wall from toe and debonding at toe initiated but as it is bounded and lock in channel section it stress transfer to heel side of masonry and all stress is concentrated on heel and heel crushing take place.
Research on Magnetic Induction Detection of Steel Bars Corrosion
Authors: Yang Zengquan , Xiong Jinsong , Chen Chuan , Xu Jun , Zhang Jiulin , Ye Huarui 
Published: May 2020

Abstract
Reinforced concrete structures are widely used in modern buildings. However, the structural damage caused by the steel bars corrosion seriously affects the building remaining life. The reinforcement corrosion in concrete is slow, so the long-term detection of reinforcement corrosion is very important. The development of reinforcement corrosion detection equipment in China is slow, which cannot meet the application requirements of domestic concrete structures, this paper proposes a non-contact magnetic induction detection method for reinforcement corrosion. Through theoretical analysis and experimental design, a simple model is built and simulated. Simulation results of single and multiple steel bars corrosion to verify the feasibility of the method. This paper provides theoretical support and technical solutions for the operation state detection of non-contact reinforced concrete, and makes contribution to the non-contact magnetic induction detection technology.
Automatic Crack Detection for Concrete Infrastructures Using Image Processing and Deep Learning
Authors: Kim Cuong Nguyen , Kawamura Kei , Nakamura Hideaki , Tarighat Amir 
Published: May 2020

Abstract
Automatic crack detection is a main task in a crack map generation of the existing concrete infrastructure inspection. This paper presents an automatic crack detection and classification method based on genetic algorithm (GA) to optimize the parameters of image processing techniques (IPTs). The crack detection results of concrete infrastructure surface images under various complex photometric conditions still remain noise pixels. Next, a deep convolution neural network (CNN) method is applied to classify crack candidates and non-crack candidates automatically. Moreover, the proposed method is compared with the state-of-the-art methods for crack detection. The experimental results validate the reasonable accuracy in practical application.
Optimization of Charles Gay-Lussac’s law experiment with temperature correction at the capillary pipe and fixed volume to improve the accuracy of experimental data in Polban applied physics laboratory
Authors: Muldiani R F , Hadiningrum K , Pratama D 
Published: May 2020

Abstract
The results of Charles Gay-Lussac’s law experimental tools at Politeknik Negeri Bandung (Polban) Applied Physics Laboratory show the pressure value of 1.027 x 105 Pa with relative uncertainty value of 11.1% and the number of moles in a flask of 12.47 mmole with relative uncertainty value of 24.3%. The experimental data has relatively low accuracy. In this study, Charles’s Law experimental tools were optimized by a measured temperature correction on the capillary pipe using the conduction concept. The heat distribution equation that occurs in capillary pipe was solved by numerical solutions using the finite difference method. The modification of Gay-Lussac’s Law experimental tools to get fixed volume was located on the manometer integrated with a glass flask. Data collection techniques were carried out in two different circumstances, namely when the system is experiencing heating and cooling, then compared. After temperature correction, it was obtained that pressure value 0.977 x 105 Pa with relative uncertainty of 5.7%. After using integrated manometer and data collection techniques when cooling, the number of moles in the flask was 21.5 mmole with relative uncertainty value of 6.2%. With the correction of temperature in the capillary pipe and the volume maintained provides more accurate experimental results.
Pure premium calculation of rice farm insurance scheme in Indonesia based on the 4-parameter beta mixture distribution
Authors: Mutaqin A K , Karyana Y , Sunendiari S 
Published: May 2020

Abstract
The Indonesian Government introduced rice farm insurance scheme (Asuransi Usaha Tani Padi – AUTP program) to protect rice farm from loss caused by flood, drought and pest and disease infestations. It has been discussed the method to calculate pure premium of the rice farm insurance scheme in Indonesia with assume that the distribution of rice yield data is normal distribution, gamma distribution, or normal mixture distribution. The normal distribution can be used for the case of distribution of rice yield data in the form of symmetry. The gamma distribution can be used for the case of distribution of rice yield data in the form of skewed to the right or positively skewed. In addition, the normal and gamma distributions are categorized as unimodal distributions. It has also been discussed the method of calculating pure premium of the rice farm insurance scheme in Indonesia with the assumption that the rice yield data is normal mixture distribution. The normal mixture distribution can be categorized as multimodal distribution. Characteristic of the normal mixture distribution is suitable for rice yield data in Indonesia that contain rice yield data from several provinces. On the other hand, it is also known that the 4-parameter beta mixture distribution can be applied to rice yield data in Indonesia. This distribution is more flexible than the normal mixture distribution in terms of the tail shape of the distribution. In this paper, pure premium calculation method of the AUTP program is formulated with assume that the distribution of rice yield data is the 4-parameter beta mixture distribution. Monte Carlo simulation is used to evaluate performance of the method. The method is applied to the rice productivity data in several provinces in Indonesia for the period 1970 to 2016.