scholarly journals An Investigation of Geography and Climate Induced Distresses Patterns on Airfield Pavements at US Air Force Installations

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Lauren K. Sahagun ◽  
Moses Karakouzian ◽  
Alexander Paz ◽  
Hanns de la Fuente-Mella
Keyword(s):  
Air Force ◽  
Condition Index ◽  
Portland Cement Concrete ◽  
Climate Zones ◽  
Pavement Condition ◽  
Pavement Distress ◽  
Western Us ◽  
Us Air Force ◽  
Pavement Condition Index ◽  
Predominant Factor

This study investigated climate induced distresses patterns on airfield pavements at US Air Force installations. A literature review and surveys of Pavement Condition Index indicated that the predominant factor contributing to the development of pavement distress was climate. Results suggested that, within each type of pavement distress, a geographic pattern exists which is strongly correlated to conventional US climate zones. The US Air Force Roll-Up Database, housing over 50,000 records of pavement distress data, was distilled using a process designed to combine similar distresses while accounting for age and size of samples. The process reduced the data to a format that could be used to perform krig analysis and to develop pavement behavior models for runways built with asphalt cement (AC) and Portland cement concrete (PCC). Regression and krig analyses were conducted for each distress type to understand distress behavior among climate zones. Combined regression and krig analyses provided insight into the overall pavement behavior for AC and PCC runways and illustrated which climate zone was more susceptible to specific pavement distresses. Distress behavior tends to be more severe in the eastern US for AC and in the western US for PCC runway pavements, respectively.

scholarly journals Automated Pavement Distress Detection Using Image Processing Techniques

2021 ◽  
Vol 11 (5) ◽  
pp. 7702-7708
Author(s):  
I. H. Abbas ◽  
M. Q. Ismael
Keyword(s):  
Image Processing ◽  
Surface Damage ◽  
Condition Index ◽  
Asphalt Pavements ◽  
Pavement Condition ◽  
Pavement Distress ◽  
The Road ◽  
Automated Method ◽  
Pavement Condition Index ◽  
Processing Techniques

Pavement crack and pothole identification are important tasks in transportation maintenance and road safety. This study offers a novel technique for automatic asphalt pavement crack and pothole detection which is based on image processing. Different types of cracks (transverse, longitudinal, alligator-type, and potholes) can be identified with such techniques. The goal of this research is to evaluate road surface damage by extracting cracks and potholes, categorizing them from images and videos, and comparing the manual and the automated methods. The proposed method was tested on 50 images. The results obtained from image processing showed that the proposed method can detect cracks and potholes and identify their severity levels with a medium validity of 76%. There are two kinds of methods, manual and automated, for distress evaluation that are used to assess pavement condition. A committee of three expert engineers in the maintenance department of the Mayoralty of Baghdad did the manual assessment of a highway in Baghdad city by using a Pavement Condition Index (PCI). The automated method was assessed by processing the videos of the road. By comparing the automated with the manual method, the accuracy percentage for this case study was 88.44%. The suggested method proved to be an encouraging solution for identifying cracks and potholes in asphalt pavements and sorting their severity. This technique can replace manual road damage assessment.

scholarly journals ANALISA KONDISI RUNWAY ELTARI KUPANG PROVINSI NUSA TENGGARA TIMUR

2017 ◽  
Vol 1 (1) ◽  
pp. 72
Author(s):  
Aloysius Lake
Keyword(s):  
Air Force ◽  
Federal Aviation Administration ◽  
Condition Index ◽  
Pavement Condition ◽  
Public Work ◽  
Pavement Condition Index

Bandar Udara El Tari Kupang merupakan salah satu pintu gerbang transportasi dari dan ke Nusa Tenggara Timur.  Mengingat tingkat penerbangan yang semakin tinggi terhadap penumpang dan barang, maka tuntutan untuk meningkatkan pemeliharaan infrastruktur runway sudah saatnya dilakukan. Terutama, penanganan kerusakan yang terjadi di runway Bandar udara Eltari. Panjang runway yang mencapai 2.500 meter,  jika dilihat secara visual terdapat kerusakan pada area pinggir runway tersebut. Kerusakan ini terjadi di sepanjang area pinggir runway sisi kanan dan sisi kiri. Hal ini akan sangat berpengaruh pada kenyamanan dan keamanan para pengguna runway Penilaian kondisi kerusakan perkerasan yang dikembangkan oleh U.S. Army Corp of Engineer (Shahin et al., 1976-1984), dinyatakan dalam Indeks Kondisi Perkerasan (Pavement Condition Index, PCI). Penggunaan PCI untuk perkerasan bandara, jalan, dan tempat parkir telah dipakai secara luas di Amerika. Departemen-departemen yang menggunakan prosedur PCI ini, misalnya: FAA (Federal Aviation Administration, 1982), Departemen Pertahanan Amerika (U.S. Air Force, 1981; U.S. Army, 1982), Asosiasi Pekerjaan Umum Amerika (American Public Work Association, 1984) dan lain-lain. Metode PCI memberikan informasi kondisi perkerasan hanya pada saat survey dilakukan, tapi tidak dapat memberikan gambaran prediksi di masa datang. Namun demikian, dengan melakukan survey kondisi secara periodik, informasi kondisi perkerasan dapat berguna untuk prediksi kinerja di masa datang, selain juga dapat digunakan sebagai masukan pengukuran yang lebih detail. Dari hasil perhitungan dan analisa maka dapat disimpulkan beberapa hal sebagai berikut: Jenis dan tingkat kerusakan perkerasan yang terjadi pada runway El Tari STA 0+300 s/d 1+800 sisi kiri adalah Retak Kulit Buaya (tingkat kerusakan rendah), Kegemukan (tingkat kerusakan tinggi), Amblas (tingkat kerusakan sedang), Retak Memanjang (tingkat kerusakan sedang), Pelepasan Butiran (tingkat kerusakan rendah hingga sedang), Retak Bulan Sabit (tingkat kerusakan sedang). Nilai Kondisi menurut PCI adalah 22, yang berarti kondisi kerusakan Serius. Penyebab kerusakan pada runway El Tari STA 0+300 – 1+800 sisi kiri, adalah : Tidak ditemukan agregat base pada struktur lapisan perkerasan, Kemiringan shoulder / bahu landasan. Sesuai dengan jenis/kondisi kerusakan maka penanganan yang dilakukan menurut Pavement Condition Index adalah melakukan  Rekonstruksi / Pembangunan Kembali.

scholarly journals Condition Survey for Evaluation of Pavement Condition Index of a Highway

2019 ◽  
Vol 5 (6) ◽  
pp. 1367-1383
Author(s):  
Muhammad Saleem Zafar ◽  
Syed Naveed Raza Shah ◽  
Muhammad Jaffar Memon ◽  
Touqeer Ali Rind ◽  
Muhammad Afzal Soomro
Keyword(s):  
Management System ◽  
Structural Reliability ◽  
Condition Index ◽  
Pavement Management ◽  
Present Condition ◽  
Pavement Condition ◽  
Pavement Distress ◽  
Pavement Condition Index ◽  
The Common ◽  
Infrastructure Maintenance

Pavements are major means of highway infrastructure. Maintenance and rehabilitation of these pavements for the required serviceability is a routine problem faced by highway engineers and organizations. Improvement in road management system results in reduction of time and cost, the pavement condition survey plays a big role in the pavement management. The initial phase in setting up a pavement management system (PMS) is road network identification. A vital element of a PMS is the capacity to assess the present condition of a pavement network and anticipation of future condition. The pavement condition index (PCI) is a numerical index generally utilized for the assessment of the operational condition & structural reliability of pavements. Estimation of the PCI is dependent on the results of a visual inspection in which the type, severity, and quantity of distresses are distinguished. In this research, a pavement distress condition rating strategy was utilized to accomplish the goals of this study. The main targets of this research were to categorize the common types of distress that exist on “Lakhi Larkana National Highway (N-105)”, and to estimate the pavement condition index. Using these data, Average PCI for the highway section was calculated. PCI to assess the pavement performance, 10 out of 19 defects were recognized in the pavement, as stated by the PCI method. Results indicated that the common pavement distress types were depressions, polished aggregate, rutting, potholes, block cracking, and alligator cracking.

VALIDITY OF GARBER MODEL IN PREDICTING PAVEMENT CONDITION INDEX OF FLEXIBLE PAVEMENT IN KERBALA CITY

2018 ◽  
Vol 09 (02) ◽  
pp. 139-151
Author(s):  
Hussein Ewadh ◽  
◽  
Raid Almuhanna ◽  
Saja Alasadi ◽  
◽  
...  
Keyword(s):  
Condition Index ◽  
Flexible Pavement ◽  
Pavement Condition ◽  
Pavement Condition Index

scholarly journals Proposal and Implementation of a Heliport Pavement Management System: Technical and Economic Comparison of Maintenance Strategies

2021 ◽  
Vol 13 (16) ◽  
pp. 9201 ◽  
Author(s):  
Paola Di Mascio ◽  
Alessio Antonini ◽  
Piero Narciso ◽  
Antonio Greto ◽  
Marco Cipriani ◽  
...  
Keyword(s):  
Management System ◽  
Condition Index ◽  
Pavement Management ◽  
Pavement Management System ◽  
Pavement Condition ◽  
Airport Pavement ◽  
Maintenance And Rehabilitation ◽  
Pavement Condition Index ◽  
Rotary Wing ◽  
Economic Comparison

Maintenance and rehabilitation (M&R) scheduling for airport pavement is supported by the scientific literature, while a specific tool for heliport pavements lacks. A heliport pavement management system (HPMS) allows the infrastructure manager to obtain benefits in technical and economic terms, as well as safety and efficiency, during the analyzed period. Structure and rationale of the APSM could be replicated and simplified to implement a HPMS because movements of rotary-wing aircrafts have less complexity than fixed-wing ones and have lower mechanical effects on the pavement. In this study, an innovative pavement condition index-based HPMS has been proposed and implemented to rigid and flexible surfaces of the airport of Vergiate (province of Varese, Italy), and two twenty-year M&R plans have been developed, where the results from reactive and proactive approaches have been compared to identify the best strategy in terms of costs and pavement level of service. The result obtained shows that although the loads and traffic of rotary-wing aircrafts are limited, the adoption of PMS is also necessary in the heliport environment.

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