The Relationship of the Asphalt Mixtures Composition and Physical Mechanical Characteristics of the Coating

2019 ◽  
Vol 974 ◽  
pp. 31-36
Author(s):  
A.I. Trautvain ◽  
Evgeniy A. Yakovlev ◽  
V.A. Grichanikov ◽  
Ye.D. Potar'
Keyword(s):  
Asphalt Concrete ◽  
Work Performance ◽  
Mechanical Characteristics ◽  
Production Control ◽  
Production Quality ◽  
Concrete Mixtures ◽  
Asphalt Mix ◽  
Relationship Of ◽  
The Relationship ◽  
Physical And Mechanical Characteristics

In the course of the work performance the following surveys were carried out: the analysis of the information assurance of the asphalt concrete mixtures production quality, the study of the relationship between the composition of asphalt concrete mixtures and the physical and mechanical characteristics of the coating. This paper presents the results of the analysis of the two types asphalt concrete mixtures qualitative composition and its effect on the physical, mechanical and technological characteristics of the coating. It is established that the deviation of asphalt concrete mixtures in composition from the required values ​​leads to their under-compaction in the coating. It was also found that the increase in the number of inconsistencies in the composition of the asphalt concrete mixture leads to the increase in physical and mechanical characteristics that differ from the requirements of GOST 9128-2013 and GOST 31015-2002. The amount of bitumen on the asphalt concrete main characteristics, the data from the existing AP in the Belgorod Region were used as the information base in assessing the influence of granulometry of the asphalt concrete mineral part. Analysis of the particle size distribution was carried out using the laser analyzer for asphalt concrete AP 7 / 35B. The obtained data will be the basis for further study of the various parameters influence on the asphalt mixes properties, as well as improving the efficiency of the asphalt mix production control system.

scholarly journals ANALYSIS OF THE INFLUENCE OF THE QUALITATIVE COMPOSITION OF THE ASPHALT-CONCRETE MIXTURE ON THE MAIN PERFORMANCE CHARACTERISTICS OF ASPHALTIC CONCRETE PAVEMENT

2020 ◽  
pp. 17-23
Author(s):  
Anna Trautvain
Keyword(s):  
Asphalt Concrete ◽  
Production Management ◽  
Information Quality ◽  
Mechanical Characteristics ◽  
Concrete Pavement ◽  
Concrete Mixture ◽  
Qualitative Composition ◽  
Concrete Mixtures ◽  
Concrete Type ◽  
Asphalt Mix

the paper presents an analysis of information quality assurance of production of asphalt concrete mixtures, as well as the study of the relationship of the qualitative composition of asphalt concrete mixtures and physical and mechanical characteristics of asphalt concrete pavement. The study of the main characteristics was carried out on the example of asphalt concrete type B and grade I and crushed-mastic asphalt concrete – SchMA-20. It is established that the deviation of asphalt mixtures in composition from the required values leads to their under-compaction in the pavement. It is also established that increasing the number of inconsistencies in the asphalt concrete mixture leads to an increase of physical-mechanical characteristics that differ from the requirements of GOST 9128-2013 and GOST 31015-2002 respectively. As an information base for the assessment of the influence of granulometry of the mineral part of asphalt concrete, as well as the amount of bitumen on the main characteristics of asphalt concrete, the data of the current ACP of Belgorod region were used. Analysis of the particle size distribution was carried out using a laser analyzer of asphalt ABA7/35B. The obtained data became the basis for a further study of the influence of various parameters on the properties of asphalt mixes, as well as improving the efficiency of the asphalt mix production management system.

TECHNOLOGICAL SUPPORT OF CONTACT RIGIDITY OF MACHINE PARTS

2021 ◽  
pp. 1-28
Author(s):  
V. F. Bezyazychnyj ◽  
M. N. Dmitrieva
Keyword(s):  
Mechanical Characteristics ◽  
Contact Stiffness ◽  
Turbine Engine ◽  
Technological Support ◽  
Contact Rigidity ◽  
Machine Parts ◽  
Engine Components ◽  
Relationship Of ◽  
The Relationship ◽  
Physical And Mechanical Characteristics

The theoretical provisions on establishing the relationship between the geometric characteristics of the surfaces of contacting parts, as well as the physical and mechanical characteristics of the material of these surfaces on their contact stiffness, including the contact stiffness of the surfaces of parts of high-load gas turbine engine components, are presented. The analysis of dependencies on the relationship of contact stiffness and pliability of surfaces with the technological conditions of their processing by various types of cutting process (turning, milling, grinding) is given.

scholarly journals Impact of Physical Factors of Workplace Environment on Workers Performance in Industry

2022 ◽  
Vol 12 (3) ◽  
pp. 57-66
Author(s):  
Md Al Amin ◽  
Arka Chakraborty
Keyword(s):  
Performance Studies ◽  
Work Experience ◽  
Work Performance ◽  
Performance Standards ◽  
Production Quality ◽  
Physical Factors ◽  
Workplace Environment ◽  
Gender And Work ◽  
Relationship Of ◽  
The Relationship

Workers’ performance and efficiency are dependent on their workplace facilities. The present study attempts to identify the six physical factors of the workplace environment: furniture and equipment design, air quality, temperature, sanitation, lighting and noise. Workers' feedback is evaluated by using 5 scale Likert method and it is found that found workplace temperature is most critical for workers' performance. The purpose of this study is to identify workers' impressions about their workplace environment and provide a better understanding to the managers about improvement. Industry-level emphasis on these factors can improve workers' performance standards and production quality. Previous work performance studies are not focused on hygiene and sanitation facility but due to the corona pandemic situation sanitation concern has been raised. This study aims to explore the relationship of these factors with gender and work experience of the workers. Variation in each group has provided an understanding of the basic demand of each type of worker. Journal of Engineering Science 12(3), 2021, 57-66

Does work engagement mediate the perceived career support- and career adaptability- work performance relationship?

2019 ◽  
Vol 12 (2) ◽  
pp. 310-327 ◽  
Author(s):  
Manish Gupta
Keyword(s):  
Work Engagement ◽  
Work Performance ◽  
Career Adaptability ◽  
Career Support ◽  
Content Type ◽  
Mediating Role ◽  
Positive Effects ◽  
Relationship Of ◽  
The Relationship

Purpose The purpose of this paper is to examine the mediating role of work engagement between the relationship of perceived career support and work performance as well as between the relationship of career adaptability and work performance. Design/methodology/approach Data were collected form 606 i-generation liquid knowledge workers. They had completed their internship program in the industry for a period of at least one month. Regression analysis was carried out to test the hypothesized framework. Findings Most of the results indicated support for the hypotheses. Work engagement was found to be mediating the perceived career support and work performance relationship fully. However, work engagement was found to be mediating the career adaptability and work performance relationship only partially. Research limitations/implications Engaging liquid workers plays a crucial role in passing the positive effects of perceived career support and career adaptability to work performance. Practical implications The findings suggest that managers may take steps to enhance engagement levels of the employees so that it can help the interns high on perceived career support and career adaptability perform well at work. Originality/value To the best of the authors’ knowledge, this study is unique that tests and finds the intervening role of work engagement between work performance and the two career-related constructs.

The Effectiveness of Using RAA-TA Additives for the Preparation of Warm Asphalt Concrete

2017 ◽  
Vol 865 ◽  
pp. 259-262 ◽  
Author(s):  
Valentina V. Yadykina ◽  
Anatoly M. Gridchin ◽  
Anna Trautvain ◽  
Vladimir Kholopov
Keyword(s):  
Asphalt Concrete ◽  
Water Saturation ◽  
Asphalt Mixture ◽  
Road Construction ◽  
State Standards ◽  
Adhesive Properties ◽  
Preparation Temperature ◽  
Asphalt Mix ◽  
Positive Effect ◽  
Physical And Mechanical Characteristics

The possibility to reduce the temperature during manufacturing and the temperature of compaction of asphalt mix by introducing the specially designed RAA-TA (Road Adhesive Additive for the warm asphalt concrete) additive to the bitumen has been demonstrated. Reducing the preparation temperature for asphalt mixture to 130 ° C, and the compaction temperature of the hot mix to 100 ° C, by using the additives, the characteristics of warm asphalt concrete meet the requirements of State Standards for hot asphalt concrete. The results indicate that the administration of additives improves strength at 20 and 50 ° C and reduces this index at 0 ° C, and with increasing the concentration of the researched additive its positive effect increases. The greatest effect of the additive is observed on such parameters as water saturation and water resistance of asphalt concrete, which is obviously connected with the improved encapsulation of mineral materials by bitumen due to the reduction of its viscosity and improvement of adhesive properties due to the additive composition. This will reduce the fuel consumption, the emissions of harmful substances into the atmosphere during the bituminous mixture production and asphalt coating making, as well as increase the distance of its transportation to the work site. At the same time the physical and mechanical characteristics of asphalt concrete with the addition of RAA-TA do not deteriorate. As a result of reducing the temperature of laying and compacting of asphalt mix the season of road construction can be extended and the pressure on the environment can be significantly reduced.

Analysis of the Relationship of the System “Operationally Efficient Building – Indoor Environment Quality – User”

2016 ◽  
Vol 824 ◽  
pp. 199-209 ◽  
Author(s):  
Jan Pasek ◽  
Ingrid Matouskova ◽  
Petr Ort ◽  
Vojtech Chlubna ◽  
Katerina Paskova ◽  
...  
Keyword(s):  
Indoor Environment ◽  
Work Performance ◽  
Willingness To Participate ◽  
Advantages And Disadvantages ◽  
Environment Quality ◽  
Significant Difference ◽  
Indoor Environment Quality ◽  
The Individual ◽  
Relationship Of ◽  
The Relationship

The research focused on the analysis of the interaction of the individual components of the system operationally efficient building – indoor environment quality – user has been conducted since 2014 in the Czech Republic by a team of College of Banking (BIVŠ) employees. The purpose of the research is the evaluation of advantages and disadvantages of operationally efficient buildings by their owners, users or facility managers. One of the most monitored research parameters is the rating of indoor environment quality and its influence in physical and psychological fitness and work performance of the building users. Next, there are also other relationships which are examined – as the importance of the indoor environment quality with regards to other building's parameters, its influence of the estate market value and the users' willingness to participate on the creation and keeping of indoor environment quality. The interpretation of gathered data proved a significant difference of the individual users' demands in relation to their individual preferences. This fact is necessary to respect while design and managing the operationally efficient buildings.

scholarly journals Indonesia’s Civil Servants' Performance at Aviation Engineering: Exploration Study

2020 ◽  
Vol 4 (2) ◽  
pp. 160
Author(s):  
Wirma Yuliana ◽  
Anita Maharani ◽  
Zainur Hidayah
Keyword(s):  
Qualitative Research ◽  
Research Method ◽  
Work Performance ◽  
Employee Performance ◽  
Data Sources ◽  
Job Descriptions ◽  
Interviewing Techniques ◽  
Relationship Of ◽  
The Relationship ◽  
Engineering Institute

This research was conducted with the aim of analyzing the relationship of performance allowances in optimizing the performance of Civil Service Civil Engineering Institute. The method used in this study is a qualitative research method. Sampling or data sources in this study were conducted purposively and for the sample size determined by snowball, interviewing techniques, data analysis using interpretive models and research results emphasizing the meaning of generalization. The results of this study indicate that each flight engineer has a workload of each. The workload is made by each employee based on job descriptions which are then outlined in the form of Employee Work Objectives (KPI). The development of achievement of KPI is one aspect in the Employee Job Achievement component, which is a reference in providing employee performance benefits, in addition to assessing the employee work discipline component. The granting of performance benefits has met the principles of fairness, fair and reasonable, competitive and transparent. Of the several motivations received by employees, performance allowances are considered the most effective to be given because by providing performance benefits employees have the ability to meet more needs, as evidenced by the desire of employees to try to carry out work optimally through efforts to achieve work performance and work discipline. Employees try to carry out the workload contained in the KPI well, carry out at least 2 additional tasks and make timely reports. 

scholarly journals The impact of superior’s anger out on employees’ creative process engagement

2014 ◽  
Vol 27 (2) ◽  
pp. 339-366 ◽  
Author(s):  
SeulKi Lee ◽  
JaeYoon Chang
Keyword(s):  
Creative Process ◽  
Work Performance ◽  
Negative Emotion ◽  
Negative Mood ◽  
Personal Identification ◽  
Mediating Effect ◽  
Moderating Effects ◽  
Relationship Of ◽  
The Impact ◽  
The Relationship

This research aimed to investigate the impact of superior’s anger out on the employees’ creative process engagement, the mediating effect of negative mood, and the moderating effects of the personal identification with the leader. To examine these ideas, we conducted a survey and collected data from 211 employees of diverse organizations. Results result showed that superior’s anger out was positively related to the employees’ negative mood. The negative mood of the employees, however, had no significant effect on the creative process engagement and it did not mediate the relationship of the superior’s anger out with employees’ creative process engagement. Lastly, personal identification with the leader significantly moderated the relationship between the superior’s anger out and the employees’ negative emotion. That is, results revealed that those employees who had higher level of personal identification with the leader regarded his/her anger out as a signal of dissatisfaction toward their work performance, tended to exert more effort to resolve the problems creatively. Applied implications of the results are discussed.

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