scholarly journals Analisis Kerusakan dan Perbaikan Jalan Beraspal pada Lapisan Asphalt Concrete-Wearing Course (AC-WC) di Kota Surabaya

2021 ◽  
Vol 1 ◽  
pp. 163-170
Author(s):  
Rindi Sekar Andika ◽  
Ari Widayanti
Keyword(s):  
Asphalt Concrete ◽  
Flexible Pavement ◽  
Road Maintenance ◽  
Class Iii ◽  
Literature Study ◽  
Dominant Type ◽  
High Severity ◽  
Different Types ◽  
Maintenance Work ◽  
Pavement Construction

AC-WC asphalt layer is a surface layer of flexible pavement construction that bears a direct load from the vehicle wheels. The increase in the number and load of traffic that occurs every year impacts road conditions and can cause damage. This requires analysis, repair and maintenance of roads for roads to function properly. The purpose of this study was to analyze road damage and provide alternative treatments for each road based on the type and level of damage that occurs. The method used was literature study, observation, documentation, and analysis with the PCI method. Observations were made on roads with class III flexible pavement in South Surabaya City. The results obtained were that the most dominant type of damage was crack damage, the level of road damage varies (low, medium, high severity) and there were different types of damage at the same point. The highest percentage and value of the damage were on Kembang Kuning Road and Pakis Tirtosari III Road. Based on the PCI method, the condition value of Dukuh Kupang XX Road was the lowest, at 25 (very poor). On Kembang Kuning Road and Pakis Tirtosari III Road maintenance work was needed, while Dukuh Kupang Road required road repairs. 

PENGARUH SUHU PEMADATAN TERHADAP STABILITAS DAN FLOW BAHAN LAPIS TIPIS ASPAL BETON (LATASTON)

2017 ◽  
Vol 11 (1) ◽  
pp. 27
Author(s):  
Marjono ,
Keyword(s):  
Thin Layer ◽  
Asphalt Concrete ◽  
Weather Conditions ◽  
Flexible Pavement ◽  
Thin Layers ◽  
Effect Of Temperature ◽  
Solidification Temperature ◽  
Pavement Construction ◽  
The Stability ◽  
The Relationship

In Indonesia, the highway pavement construction still use flexible pavement construction (Flexible Pavement). One of the problems often faced in the implementation time is to keep the temperature mix asphalt is still in the limit, This happens because it is associated with the weather conditions and the length of the transport of asphalt mixing point to the location. So often happens temperature asphalt mix location is at the lowest limit, and potentially non-fulfillment of the temperature required at this stage to stage compaction. This will result in the implementation of the road pavement quality and age will affect the service life of pavement construction. On the basis that the researchers took the title "The Effect of Temperature on the Stability and flow  of Thin Layer Paving Asphalt Concrete ". The method used is the real experimental research is doing real research on the model Thin layers of asphalt pavement with concrete, size 100 cm wide, 300 cm long and thick Thin Layer Asphalt Concrete 5 cm. Treatment on the sample that is a variation solidification temperature (120 oC, 100 oC, 80 oC, 60 °C) with 32 times the amount of compaction. The results showed that the solidification temperature affect the stability and flow value Thin Layer Asphalt Concrete, and the relationship between the solidification temperature on the stability of the equation written in the form y = -0,0315x2 + 10,155x - 349.33, where y = stability (Kg) and x = temperature (° C). and the relationship between the solidification temperature of the flow is written in the form of the equation y = -6E-05x2 + 0,0341x + 1.2935, where y = flow  (mm) and x = temperature (° C) Keywords: thin layer asphalt concrete, compaction temperature, pavement road

scholarly journals Highway Failure and Their Maintenance: A Study of Rajshahi Metropolitan City, Rajshahi, Bangladesh

2020 ◽  
Vol 3 (2) ◽  
pp. 45-50
Author(s):  
Mehedi Hasan ◽  
Mohd. Abdus Sobhan ◽  
◽  
Keyword(s):  
Heavy Traffic ◽  
Flexible Pavement ◽  
Poor Quality ◽  
Maintenance Cost ◽  
Road Maintenance ◽  
Traffic Jam ◽  
Different Types ◽  
Paved Road ◽  
Rajshahi City

Total length of paved road in Rajshahi City is about 186.64 km (2011 census). It shows that about 23% of total road lengths are present in failure condition. This study shows an investigation to compute the flexible pavement’s failure types, to define and identify the causes, and select the best maintenance for that failures of flexible pavement within Rajshahi City. There are many types of failures occur on the roads such as different types of cracks, potholes, raveling, water bleeding, corrugation and shoving, depression, and rutting. The possible causes of flexible pavement failures are improper bituminous mixes with poor quality of materials, heavy traffic loads, heavy rainfall, and bad drainage on pavement. The failures are gradually raised due to lack of proper planning, inspection, and treatment. These failures create different types of disadvantages like traffic jam, discomfort to the passengers as well as drivers, increasing vehicle operating, maintenance cost, etc. This study proves that the authorities practice maintenance procedures to repair the failures of pavement which are about 60% similar to the conventional road maintenance procedures. The authorities as Roads and Highway Department and Rajshahi City Corporation are suggested to do maintenance according to the requirements of urgent maintenance and availability of fund which is found in this investigation.

scholarly journals Influential Factors and Evaluation Methods of the Performance of Grouted Semi-Flexible Pavement (GSP)—A Review

2021 ◽  
Vol 11 (15) ◽  
pp. 6700
Author(s):  
Xiaogang Guo ◽  
Peiwen Hao
Keyword(s):  
Literature Review ◽  
Systematic Literature Review ◽  
Asphalt Concrete ◽  
Cement Mortar ◽  
Road Construction ◽  
Flexible Pavement ◽  
Evaluation Methods ◽  
Influential Factors ◽  
Future Research ◽  
Relative Evaluation

Grouted Semi-flexible Pavement (GSP) is a novel pavement composed of open-graded asphalt concrete grouted with high-fluidity cement mortar. Due to its excellent load-bearing and anti-rutting performance, it has great potential as anti-rutting overlay and surface in road construction. However, the understanding of GSP performance remains limited and pertinent findings are inconsistent. This article aims to provide a systematic literature review for the articles which were published between 2000 and 2020 on GSP, explore the problems in the recent research, identify knowledge gaps, and deliver recommendations for future research. The influential factors and the relative evaluation methods of GSP performance are summarized and discussed in this article.

Research on the Construction Technology of Self-Monitoring Asphalt Concrete

2021 ◽  
Vol 891 ◽  
pp. 205-210
Author(s):  
Yuan Xu
Keyword(s):  
Asphalt Concrete ◽  
Test Section ◽  
Rolling Process ◽  
Construction Technology ◽  
Self Monitoring ◽  
Mixing Effect ◽  
Steel Wheel ◽  
Mixing Method ◽  
Pavement Construction ◽  
Compaction Degree

Combined with the paving of the test section of Self-monitoring Asphalt Concrete, the electrode burying mode of pavement construction is designed according to its characteristics, and the best mixing method and spreading rolling construction technology are compared and analyzed. The results show that the construction structure of the test section is reasonable and feasible, the best mixing effect can be obtained by adding conductive phase material and asphalt at the same time, and the rolling process. The order of rubber wheel and steel wheel compaction has no significant effect on compaction degree.

scholarly journals Concrete Modular Pavements – Types, Issues And Challenges

2019 ◽  
Vol 14 (1) ◽  
pp. 80-103 ◽  
Author(s):  
Audrius Vaitkus ◽  
Judita Gražulytė ◽  
Rita Kleizienė ◽  
Viktoras Vorobjovas ◽  
Ovidijus Šernas
Keyword(s):  
Traffic Congestion ◽  
Road Network ◽  
Load Transfer ◽  
Precast Concrete ◽  
Concrete Slabs ◽  
Time Saving ◽  
Urban Streets ◽  
The Road ◽  
Different Types ◽  
Pavement Construction

According to the European Asphalt Pavement Association, more than 90 per cent of the European road network is paved with asphalt. Constantly increasing traffic volume and climate change accelerate deterioration of current pavements. As a result, there arises a need to rehabilitate them prematurely. Repair and rehabilitation work lead to traffic congestion, which is one of the most significant concerns in highly trafficked roads and urban streets. Concrete modular pavements consisting of precast concrete slabs are a reasonable solution to deal with the road works since their construction, as well as repair, is time-saving. Repair works typically are implemented during a low traffic period (usually at night). A primary purpose of concrete modular pavements is heavily trafficked roads and other transport areas. This paper focuses on concrete modular pavements, their types, issues and challenges related to their design, slab fabrication and pavement construction. The conducted analysis revealed 15 different types of concrete modular pavements that differ from the techniques of slab joints and load transfer between the adjacent slabs. More than 20 issues and challenges related to the design of modular elements, slab fabrication and pavement construction were identified. Finally, the existing practice of concrete modular pavements was summarised and the gaps of scientific knowledge, as well as a need for comprehensive research, were defined.

scholarly journals Karakteristik Marshall Pada Campuran Asphalt Concrete – Wearing Course (AC-WC) Dengan Penambahan Styrofoam

2019 ◽  
Vol 8 (2) ◽  
pp. 51-62
Author(s):  
Ika Sulianti ◽  
Ibrahim Ibrahim ◽  
Agus Subrianto ◽  
Adelia Monita ◽  
Medici Medici
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Flexible Pavement ◽  
Asphalt Mixtures ◽  
Concrete Mixture ◽  
Pavement Performance ◽  
Food Container ◽  
Optimum Stability ◽  
Marshall Test

Styrofoam waste presents the environment issue because it is difficult to decompose. As an effort to recycle this pollutant, styrofoam can be utilized as an additive in asphalt concrete mixture. The use of additives aims to create a flexible pavement layer having good performance and meet the requirements. The purpose of this study is to find out whether the addition of styrofoam can improve the quality of asphalt mixtures, and look for alternative additives that can increase asphalt pavement performance. In this study, researchers used food container styrofoam as an addition and incorforated into Asphalt Concrete Wearing Course (AC-WC) mixture. The styrofoam content was 6.5%; 6.75%; 7% ; 7.25%; and 7.5% of asphalt weight. The optimum asphalt contentused is 5.5%. The value of the optimum stability was 3126,002 kg, found at 7.25% of styrofoam content. The best results of Marshall test was obtained at 6.5% of styrofoam content  with stability value  1362,045 kg, VIM value 4,96%, VMA 15,025%, VFA 67,800%, flow 3,44 mm, and MQ 416,338 kg / mm.

Random collision models in oriented graphs

1979 ◽  
Vol 16 (01) ◽  
pp. 36-44 ◽  
Author(s):  
Yoshiaki Itoh
Keyword(s):  
Oriented Graph ◽  
Dominant Type ◽  
Oriented Graphs ◽  
Collision Model ◽  
Dominance Relations ◽  
Different Types ◽  
The Stability ◽  
Collision Models

We investigate a random collision model for competition between types of individuals in a population. There are dominance relations defined for each pair of types such that if two individuals of different types collide then after the collision both are of the dominant type. These dominance relations are represented by an oriented graph, called a tournament. It is shown that tournaments having a particular form are relatively stable, while other tournaments are relatively unstable. A measure of the stability of the stable tournaments is given in the main theorem.

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