scholarly journals Intelligent Road Construction Site - Development of Automation into Total Working Process of Finnish Road Construction

2003 ◽  
Author(s):  
Rauno Heikkilä ◽  
Mika Jaakkola
Keyword(s):  
Road Construction ◽  
Construction Site ◽  
Working Process ◽  
Site Development

scholarly journals Evaluation of Short-Term Aging Protocol for Asphalt Mixtures

2019 ◽  
Vol 9 (14) ◽  
pp. 2783 ◽  
Author(s):  
Sirin ◽  
Paul ◽  
Kassem ◽  
Ohiduzzaman
Keyword(s):  
Mechanical Properties ◽  
Asphalt Pavement ◽  
Road Construction ◽  
Asphalt Mixtures ◽  
Pavement Performance ◽  
Design Stage ◽  
Construction Site ◽  
Short Term ◽  
Compaction Processes

Asphalt mixtures are subjected to short-term aging during the production, placement, and compaction processes. Proper evaluation of asphalt pavement performance relies on the accurate characterization of asphalt mixtures during the design stage. In this study, three different loose asphalt mixtures often used in Qatar were evaluated to develop a laboratory short-term aging procedure. Sample mixtures 1 and 3 were collected from a construction site, while mixture 2 was obtained from an asphalt plant. Virgin aggregates and binders were also collected to reproduce the mixtures in the laboratory. Laboratory-produced mixtures were conditioned at 135 °C using various time durations. The mechanical properties of laboratory-produced mixtures were compared to those of mixtures produced on site. The results of the mechanical and binder testing demonstrated that the proper short-term aging protocol for asphalt mixtures often used in road construction in the State of Qatar would involve heating asphalt mixtures for 4 h at 135 °C before laboratory compaction.

scholarly journals Erosion protection Phytoreinforcement of SCARP steep slopes of the holy virgin’s DITCH

Vestnik MGSU ◽  
2015 ◽  
pp. 83-94
Author(s):  
Natal'ya Georgievna Tazina ◽  
Valentina Ivanovna Darchiya ◽  
Sergey Nikolaevich Chernyshev
Keyword(s):  
Road Construction ◽  
The South ◽  
Climate Conditions ◽  
Ecological Conditions ◽  
Site Development ◽  
Sensitive Issue ◽  
Wide Range ◽  
Recreational Area ◽  
Steep Slopes ◽  
Erosion Protection

Erosion protection landscaping embedment of steep subsoil slopes is a time-sensitive issue of road construction and planning of recreational area that are often fit on a challenging picturesque terrain unsuitable for site development. The article provides the results of a 4-year experiment on landscaping and plant fixing of up to 4.5 m soil slopes with 1:1 and 2:1 grades; the experiment was carried out by the MGSU on the territory of a convent in the south of the Nizhniy Novgorod region. The site has slopes oriented towards all cardinals. At some places the slopes are bedimmed by trees. All these factors create a wide range of geo-ecological conditions for lawns. All the slopes are fixed with geo-fibrefill grids; slopes with 2:1 grade are strengthened by auxiliary grids made of reinforced metal bars, anchors and braces on the bottom of the Holy Moat. The paper recommends composition of grass plants as well as techniques to build up lawns suitable for various micro-climate conditions. It also advises the structure of multi-tier plant entity. The suggested methods are tested during a 3-year maintenance of slopes built for constant use.

scholarly journals Design of Male Student Dormitory Medan State University with Appropriate Site Development Concept (Green Architecture)

2021 ◽  
Vol 5 (3) ◽  
pp. 363-374
Author(s):  
Dwira Nirfalini Aulia ◽  
Annisa Anindita Nasution
Keyword(s):  
Male Student ◽  
Male Students ◽  
Construction Site ◽  
State University ◽  
Building Conditions ◽  
Green Architecture ◽  
Site Development ◽  
Residential Neighborhood ◽  
Development Concept ◽  
North Sumatra

Student dormitories are the residential neighborhood as student residences during their lectures. The dorms are increasing as students access different regions to study at a university. Medan city has several dorms which one is of Medan State University. This student dormitory is a special dormitory for male students of Medan State University who come from areas in North Sumatra. The condition of the dormitories is considered inadequate as a Student dormitories capacity is less than required. The existing student dormitory facilities are not complete for student dormitory facilities. It is necessary to design the male student dormitory of Medan State University. In this design, the Medan State University male student dormitory requires additional supporting facilities around the student dormitory and good building conditions. The location of the building is in the educational Area on Jalan William Iskandar Pasar V, New Memories, Percut Sei Tuan. The Male Student Dormitories applies green architecture with a basic concept approach to land use which is considered to respect every criterion contained in the land, made as comfortable as possible, responsive to the factors evaluated at the construction site.

scholarly journals Analysis of Settlement of the Road with Full Scale Geotextile Reinforcement on the Very Soft Soil (Case Study in Tapin Regency, South Kalimantan)

2019 ◽  
Vol 280 ◽  
pp. 03012
Author(s):  
Muhammad Arsyad ◽  
Indrasurya B. Mochtar ◽  
Noor Endah Mochtar
Keyword(s):  
Soft Soil ◽  
Road Construction ◽  
Full Scale ◽  
Construction Site ◽  
The Road ◽  
Local Material ◽  
Long Time ◽  
Soil Settlement ◽  
On The Road ◽  
Additive Materials

Abstract, in case of the construction of road in soft soil, it is necessary toconsider the use of materials around the road construction site, and not touse selected material which is imported from outside the road constructionsite. Thus, aim to overcome the difficulties of using selected materials, namely the difficulty to obtain the materials, the price of expensivematerials , the freight of material that could takes a long time period, highcost, and the use of materials that tend to be environmentally unfriendly. Itis very necessary to learn about the use of nonstandard additive materials, taken to the road construction site, but with the use of geotextilereinforcement. The research method used is a full scale method in the formof trial embankment, so that the performance of the road can be observedfor a long period of time due to the traffic and soil settlement. The resultsobtained is settlement that occur on the road from the combination ofordinary embankment material and local material, most frequently occuredin a larger percentage of ordinary embankment than the local material. While the visual value is relevant to the settlement in which a largerpercentage of ordinary embankment results in a better visual value, due tothe quality of the ordinary embankment material is better than the localmaterial.

scholarly journals REDUCTION OF DIFFERENTLY DIRECTIONAL VIBRATIONS TO ASYMMETRICAL BY CHANGING THE RATIO OF VALUES COMPOSING THE DRIVING FORCE

2021 ◽  
Vol 6 (5) ◽  
pp. 87-94
Author(s):  
V. Ryazancev ◽  
M. Gerasimov ◽  
Y. Brazhnik
Keyword(s):  
Energy Consumption ◽  
Driving Force ◽  
Road Construction ◽  
Oscillation Period ◽  
Primary Role ◽  
Construction Work ◽  
Metal Consumption ◽  
Working Process ◽  
Straight Line ◽  
Coefficient Of Asymmetry

Vibrating machines play a primary role in the implementation of programs in the construction and road construction kit. The improvement of vibration machines allows to significantly increase the speed of construction and road construction work. The main working unit of a vibrating machine is a vibrating device or vibrator. Currently, in the industry, vibration devices are used with circular or directional, along a certain straight line of vibrations. Further improvement of vibrating machines is carried out in the direction of creating vibration devices with asymmetric vibrations. At present, there are practically no vibrating machines with asymmetric vibrations. These machines allow to distinguish between the "working" process phase and the "idle" phase within each oscillation period. Moreover, the value of the driving force in the phase of performing useful work is several times higher than the value of the driving force in the direction of idling. Therefore, much less work is spent on idling. This allows to get rid of massive elements - overloads that extinguish the magnitude of the driving force in the direction of idling. Therefore, the urgency is to develop a method for converting existing machines with directional vibrations into asymmetric ones, with a given coefficient of asymmetry of the driving force. This makes it possible to reduce the specific indicators of the metal consumption of vibrating machines and the energy consumption of the work performed.

scholarly journals Analisis Variabel-Variabel Risiko pada Pelaksanaan Proyek Konstruksi Jalan

2017 ◽  
Vol 14 (2) ◽  
pp. 46-56
Author(s):  
Rahmi Hidayati ◽  
Monika Natalia ◽  
Fauna Adibroto ◽  
Mafriyal Mafriyal ◽  
Yurisman Yurisman ◽  
...  
Keyword(s):  
Occupational Safety ◽  
Construction Project ◽  
Road Construction ◽  
Project Managers ◽  
Research Data ◽  
Design And Technology ◽  
Construction Site ◽  
The Road ◽  
Safety And Health ◽  
Site Design

This research aims to identify the risk variables that ever occurred while executing of road construction project. In addition, it is to identify how significant and how big the influence of risk variables to the articulation of project execution processes of a road construction project, based on questionnaire that distributed to 30 questionnaires who are project managers and site managers on contractors of road construction project.  From the research data, there were identified 14 risk variables with 84 risk sub-variables on execution of road construction project. Those 14 risk variables were natural, social, politic, economic, law, occupational safety and health, managerial, technical, cultural, logistic, condition around construction site, design and technology, labor, and contractual variables. From the data analysis by using SPSS version 16, obtained there were 14 risk sub-variables which became the most influential sub-variables (indicators) to the road construction project. All sub-variables on the questionnaire are valid and reliable. The results of this research is expected to be considered for all parties involved in the construction project to pay more attention to risk variables during the execution of road construction project.

scholarly journals The Exploration of Hazard Prediction Techniques and Security Management Strategies for Domestic Road Construction

2015 ◽  
Vol 9 (1) ◽  
pp. 974-978
Author(s):  
Chenhao Guo ◽  
Yapeng Yan ◽  
Tiansong Wang
Keyword(s):  
Comprehensive Evaluation ◽  
Rapid Development ◽  
Management Strategies ◽  
Security Management ◽  
Road Construction ◽  
Construction Site ◽  
Management Measures ◽  
Long Duration ◽  
Prediction Techniques ◽  
Security Incidents

With the rapid development of the economy in China and the speeding up of urbanization, urban roads and highways in China continue to increase. However, due to some of the characteristics of road construction, long duration, high fluidity, large volume of work and complex process, there exist many security problems during the period of construction, which determines that security management is unoptimistic on construction site. This paper makes a comprehensive research over the achievements of domestic and foreign experts and analyzes the causes of the security incidents in domestic road construction, so as to further clarify that the deep reasons for the security incidents in management. Based on this, the author advances the corresponding security management measures. With comprehensive evaluation methods applied on road construction site, the security situation can be predicted and prevented whenever and wherever possible.

scholarly journals Mitigating a traffic impact on animals

2014 ◽  
Vol 13 (1) ◽  
pp. 063-073 ◽  
Author(s):  
Dagmara Nowacka
Keyword(s):  
Protected Areas ◽  
Road Network ◽  
Biological Diversity ◽  
Road Construction ◽  
Construction Site ◽  
Traffic Impact ◽  
Ecological Continuity ◽  
Biological Protection ◽  
Biological Environment ◽  
Construction Works

Poland, which biological diversity stands out in comparison with the rest of Europe, became one of the biggest road construction site during the last few years. A development of a road network almost always involves disturbance of biogically sensitive and protected areas. As those areas cover about one third of the whole country it is virtually impossible to avoid conflicts concerning biological protection. For those reasons, steps to be taken to limit to a minimum the incidence of the construction works on the biological environment constitute an integral part of each investment. The costs of protecting unspoiled environment represent up to 30% of the total costs of investments. The effectiveness of planned actions must consequently justify spending the considerable funds involved. Monitoring of the results of solutions used allows both verification of their usefulness and identification possible errors so that they may be avoided in the future. Number of actions which have been undertaken in Poland to minimalize the incidence of roads on unspoiled environment, in particular as regards the number of fauna passes, to preserve the ecological continuity, place Poland among most advanced European countries.

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