scholarly journals Various Types of Road Defects in Flexible Pavement and Maintenance

2021 ◽  
pp. 25-33
Author(s):  
Shakti Singh ◽  
Devander Kumar
Keyword(s):  
Road Network ◽  
Flexible Pavement ◽  
Cultural Development ◽  
Remedial Measures ◽  
Water Penetration ◽  
The Road ◽  
Multiple Dimensions ◽  
Funds Allocation ◽  
Causes Of Failure

Various defects in versatile pavements are proverbial since the existence of versatile pavement. Pavement structure is additionally destroyed in an exceedingly terribly single season with water penetration .Defects in versatile pavements may well be a cringe of multiple dimensions, fantastic growth of machine traffic (in terms of no. of shaft loading of economic vehicles), the fast enlargement within the road network, non-availability of acceptable technology, material, equipment, labor and poor funds allocation have all else complexities to the matter versatile pavements. Maintenance is ready of activities directed towards keeping a structure in an exceedingly terribly serviceable state throughout its vogue life, Maintenance of a road network involves a spread of operations, i.e., identification of deficiencies and developing with, programming and programming for actual implementation within the sphere and looking out . The essential objective need to be to stay the amount and appurtenances in condition and to increase the lifetime of the road assets to its vogue life. Broadly, the activities embody identification of defects and to boot the potential cause there off, determination of acceptable remedial measures; implement these within the sphere and looking out at of the results. Pavement failure is written in terms of decreasing utility caused by the event of cracks and ruts. Before going into the upkeep ways in which, we tend to have to be compelled to check abreast of the causes of failure of pavements. Failures of pavements are caused to several reasons or combination of reasons. This paper summarizes the continued researches concerning the defects in versatile pavement and to boot the maintenance in versatile pavements. A well-developed transportation infrastructure is crucial for economic, industrial, social and cultural development of a rustic. Maintenance is ready of activities directed towards keeping a structure in an exceedingly terribly serviceable state throughout its vogue life, Maintenance of a road network involves a spread of operations, i.e., identification of deficiencies and developing with, programming and programming for actual implementation within the sphere and looking out . The essential objective need to be to stay the amount and appurtenances in condition and to increase the lifetime of the road assets to its vogue life. This paper discusses the potential causes of pavement failures, and recommend better ways in which throughout to attenuate and hopefully eliminate the causes of failures in pavements.

scholarly journals Road Networks Winter Risk Estimation Using On-Board Uncooled Infrared Camera for Surface Temperature Measurements over Two Lanes

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
M. Marchetti ◽  
M. Moutton ◽  
S. Ludwig ◽  
L. Ibos ◽  
V. Feuillet ◽  
...  
Keyword(s):  
Data Analysis ◽  
Road Network ◽  
Risk Estimation ◽  
Risk Index ◽  
Road Networks ◽  
Infrared Camera ◽  
Atmospheric Parameters ◽  
The Road ◽  
Measurement Rate

Thermal mapping has been implemented since the late eighties to establish the susceptibility of road networks to ice occurrence with measurements from a radiometer and some atmospheric parameters. They are usually done before dawn during wintertime when the road energy is dissipated. The objective of this study was to establish if an infrared camera could improve the determination of ice road susceptibility, to build a new winter risk index, to improve the measurements rate, and to analyze its consistency with seasons and infrastructures environment. Data analysis obtained from the conventional approved radiometer sensing technique and the infrared camera has shown great similarities. A comparison was made with promising perspectives. The measurement rate to analyse a given road network could be increased by a factor two.

Instability and stabilization of an embankment on the Irbid–Amman Highway in Jordan

1994 ◽  
Vol 31 (6) ◽  
pp. 1015-1021 ◽  
Author(s):  
Azm S. Al-Homoud ◽  
Ahmad B. Tal ◽  
Abdallah I. Husein (Malkawi)
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Engineering Properties ◽  
Soil Parameters ◽  
Remedial Measures ◽  
Geotechnical Investigation ◽  
The Road ◽  
Landslide Zone ◽  
Time Of Failure

This paper includes a summary of a geotechnical investigation of an embankment site at station 47 + 300 along the Irbid–Amman Highway in Jordan. The embankment suffered instability problems. This study includes geological and geotechnical mapping of the study area as well as determination of the engineering properties of the various materials encountered at the site.Stability analysis is carried out for the original embankment to explain the failure mechanism, assess the condition at the time of failure, and evaluate the soil parameters for use in stability analysis of remedial measures. Stability analysis is carried out for remedial works. Recommendations are suggested to stabilize the sliding area and to repair the road traversing this landslide zone. Key words : slope stability, embankment, remediation.

scholarly journals Methodology of Using Terrain Passability Maps for Planning the Movement of Troops and Navigation of Unmanned Ground Vehicles

Sensors ◽  
2021 ◽  
Vol 21 (14) ◽  
pp. 4682
Author(s):  
Wojciech Dawid ◽  
Krzysztof Pokonieczny
Keyword(s):  
Crisis Management ◽  
Road Network ◽  
Unmanned Ground Vehicles ◽  
Ground Vehicles ◽  
Salvage Operation ◽  
The Road ◽  
Key Factor ◽  
The Impact ◽  
Military Units

The determination of the route of movement is a key factor which enables navigation. In this article, the authors present the methodology of using different resolution terrain passability maps to generate graphs, which allow for the determination of the optimal route between two points. The routes are generated with the use of two commonly used pathfinding algorithms: Dijkstra’s and A-star. The proposed methodology allows for the determination of routes in various variants—a more secure route that avoids all terrain obstacles with a wide curve, or a shorter route, which is, however, more difficult to pass. In order to achieve that, two functions that modify the value of the index of passability (IOP), which is assigned to the primary fields that the passability map consists of, have been used. These functions have a β parameter that augments or reduces the impact of the applied function on IOP values. The paper also shows the possibilities of implementation of the methodology for the movement of single vehicles or unmanned ground vehicles (UGVs) by using detailed maps as well as for determining routes for large military operational units moving in a 1 km wide corridor. The obtained results show that the change in β value causes the change of a course of the route as expected and that Dijkstra’s algorithm is more stable and slightly faster than A-star. The area of application of the presented methodology is very wide because, except for planning the movement of unmanned ground vehicles or military units of different sizes, it can be used in crisis management, where the possibility of reaching the area outside the road network can be of key importance for the success of the salvage operation.

scholarly journals An Improved Algorithms of Stroke Generation Considering Multi-level Information Quantity

2019 ◽  
Vol 1 ◽  
pp. 1-2
Author(s):  
Yi Liu ◽  
Wenjing Li ◽  
Zhiyong Lin
Keyword(s):  
Road Network ◽  
Structural Characteristics ◽  
Network Structures ◽  
Information Quantity ◽  
The Road ◽  
Level Information ◽  
Feature Information ◽  
Multi Level ◽  
Selection Of

<p><strong>Abstract.</strong> As a critical component of road network data, stroke has been widely used in analysis and application of road network. However, most conventional stroke generation strategies are based solely on a regular angle threshold, ignoring the structural characteristics of the road network. In fact, map information comes from the diversity and difference of elements and their distribution characteristics. Different road network structures should also correspond to different angle thresholds, rather than a fixed value. Therefore, quantitatively describing the structure characteristics of road network, has an important impact on the determination of the threshold in stroke generation strategies. In this paper, we propose an algorithm of stroke generation based on spatial feature information, which achieves the selection of the optimal threshold under different road network structures.</p>

scholarly journals DEVELOPMENT OF PROGRAM IN C++ FOR ANALYSIS OF NSV SURVEY DATA BY PCI METHOD FOR FLEXIBLE PAVEMENT

2019 ◽  
Vol 31 (3) ◽  
Author(s):  
Soumadeep Bagui ◽  
Swapan Kumar Bagui ◽  
Anukul Saxena
Keyword(s):  
Road Network ◽  
Design Procedure ◽  
Condition Index ◽  
Flexible Pavement ◽  
Regression Equations ◽  
Pavement Condition ◽  
C Language ◽  
Pavement Condition Index ◽  
Future Requirement

This paper presents the development of software in C++ Language for the determination of Pavement Condition Index (PCI) based on the design procedure mentioned in ASTM D 4433 and future requirement of maintenance of existing road /road network. Presently in India, Manual Pavement Condition survey has been replaced by automated Network Survey Vehicle (NSV). PCI procedure mentioned in ASTM D 4433 which needs uses of several curves and same curves have been converted in regression equations. These equations are used to prepare a Program in C++ Language. This will be useful for Pavement Engineer to determine PCI and maintenance strategy.

scholarly journals ANALISIS PERENCANAAN OVERLAY PADA RUAS JALAN CRAKEN-NGULUNGKULON NAMBAK-NGULUNGKULON DENGAN BAHAN ACL PADA STA 0.00-13.345 KECAMATAN MUNJUNGAN KABUPATEN TRENGGALEK

2019 ◽  
Vol 2 (1) ◽  
pp. 121
Author(s):  
Wisnu Arganata ◽  
Arthur Daniel Limantara ◽  
Yosef Cahyo ◽  
Agata Iwan Candra
Keyword(s):  
Growth Rate ◽  
Road Network ◽  
Flexible Pavement ◽  
Integrated System ◽  
The Road ◽  
Additional Layer ◽  
Road Section ◽  
Road Capacity ◽  
Road Performance ◽  
Pavement Thickness

Nowadays, the development of road capacity and vehicle quantity and the lack of optimal traffic infrastructure operations are the main problems in the Nambak-Ngulungkulon Craken-Ngulungkulon road section. This road is the object of observation because the road is an integrated system of the Nambak-Ngulungkulon Craken-Ngulungkulon road network. It is necessary to analyze how the performance and the thickness of the flexible pavement layer needed. To analyze road performance and calculate pavement thickness, the writer uses the Bina Marga 2017 method with ACL material at STA 0.00 - 13,345. The results of the analysis and calculation for the geometric planning of the Nambak-Ngulungkulon  Craken-Ngulungkulon road section obtained the value of surface course with the 2017 Bina Marga method of 13 cm. Overlay work on the planning age is carried out in the 15 the year with an additional layer thickness with the Bina Marga 2017 method of 3 cm. And the traffic growth rate increased by 28.65% for 10 years y.a.d.Saat ini pengembangan kapasitas jalan dan kuantitas kendaraan dan kurangnya operasi infrastruktur lalu lintas yang optimal adalah masalah utama di ruas jalan Nambak-Ngulungkulon Craken-Ngulungkulon. Jalan ini adalah objek pengamatan karena jalan tersebut merupakan sistem yang terintegrasi dari jaringan jalan Nambak-Ngulungkulon Craken-Ngulungkulon. Perlu untuk menganalisis bagaimana kinerja dan ketebalan lapisan perkerasan lentur yang dibutuhkan. Untuk menganalisis kinerja jalan dan menghitung tebal perkerasan, penulis menggunakan metode Bina Marga 2017 dengan material ACL di STA 0,00 - 13,345. Hasil analisis dan perhitungan untuk perencanaan geometrik ruas jalan Nambak-Ngulungkulon Craken-Ngulungkulon diperoleh nilai permukaan jalan dengan metode Bina Marga 2017 13 cm. Pekerjaan overlay pada usia perencanaan dilakukan pada tahun ke-15 dengan tambahan ketebalan lapisan dengan metode Bina Marga 2017 3 cm. Dan tingkat pertumbuhan lalu lintas meningkat sebesar 28,65% selama 10 tahun y.a.d.

scholarly journals Instantaneous speed as a tool for defining accessibility in the road network of Ocaña, Colombia

2021 ◽  
Vol 2139 (1) ◽  
pp. 012011
Author(s):  
L T Cabrera Jiménez ◽  
L Navarro Sánchez ◽  
R J Gallardo Amaya
Keyword(s):  
Travel Time ◽  
Road Network ◽  
Travel Times ◽  
The Road ◽  
Average Travel Time ◽  
Average Operating ◽  
Instantaneous Speed ◽  
Time Required ◽  
The City

Abstract The application of the concept of instantaneous speed to the movement of vehicles on a city’s road network made it possible to establish average operating speeds. With the help of software based on geographic information systems, it was possible to determine the minimum travel times required by vehicles to move between two points on the network. Through the above analysis of speeds and travel times, applied to the road network of the municipality Ocaña, Colombia, it was possible to establish the time required by various types of vehicles to travel between the different points of the road network, allowing to define the level of accessibility to move between different areas of the city. The analysis required the updating, characterization, georeferencing and determination of the instantaneous speeds for each trip in the different arcs of the network and the subsequent determination of the average travel time curves in the network. The urban area of the city is covered with an average travel time of 15 minutes and the operating speeds are between 5 km/h and 31 km/h, with variations depending on the type of vehicle (bus, taxi, motorcycle).

scholarly journals Calculating the correction factor of skidding distance based on forest road network

2011 ◽  
Vol 57 (No. 11) ◽  
pp. 467-471 ◽  
Author(s):  
M. Lotfalian ◽  
E.H. Zadeh ◽  
S.A. Hosseini
Keyword(s):  
Correction Factor ◽  
Road Network ◽  
Road Density ◽  
Forest Road ◽  
The Road ◽  
Topographical Map ◽  
Arc Gis ◽  
The Mean ◽  
Gis Software

&nbsp; Average skidding distance for forest stands is an important parameter for the determination of the optimum road density and spacing. In this research the real mean skidding distance and theoretical mean skidding distance were measured to calculate the correction factor of skidding distance for Chafrood forest in Hyrcanian zone. The length and azimuth of skid trails from road and depot junction to forest interior were measured. Moreover, the position of skid trail was recorded by GPS. These skid trails with a buffer of 140 m were designed on a topographical map using Arc GIS software. Results indicated that the road spacing of 500 m in the study area resulted in a theoretical mean skidding distance of 125 m. For a real mean skidding distance of 525.9 m and for the mean slope of 40%, the correction factor was estimated to be 4.2.

scholarly journals Analysis of the Impact of no Passing Zones on Fuel Costs

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Nenad Ruškić ◽  
Tea Pavlica ◽  
Jelena Nišić
Keyword(s):  
Road Network ◽  
Traffic Load ◽  
Level Of Service ◽  
The Road ◽  
Road Section ◽  
Traffic Volumes ◽  
Clear Visibility ◽  
The Impact ◽  
Fuel Costs

The primary task of traffic and transportation planning is to improve the conditions of traffic and level of service on the entire road network. On three sections, which were analyzed in this paper, the possibility of reducing the precentage of no passing zones was noticed, by changing the horizontal signalization on the segments of road section where the clear visibility for overtaking was determined for one direction of the two-way highway. In the first part of the paper, the analysis of traffic conditions on the existing and on the newly designed variants of all three observed road sections was performed. Analysis of the level of service on the intersections that are part of this research are done in chapter 2. Increasing the speed on the newly designed section results in a reduced travel time and this leads to savings in fuel costs as shown in chapter 3. Traffic forecast for the planning 2029 is done in chapter 4, the forecasted traffic load implies future traffic volumes for which adequate capacities of the road network need to be provided. Chapter 5 is based on determination of the relationship between the benefits brought by the newly designed variant and the costs that are realized during its construction. The results of this analysis were used as input data for the economic evaluation of the project solutions, where the savings in fuel costs were analyzed.

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