Deterioration models are important and essential part of any Pavement Management System (PMS). These models are used to predict future pavement situation based on existence condition, parameters causing deterioration and implications of various maintenance and rehabilitation policies on pavement. The majority of these models are based on roughness which is one of the most important indices in p...

1. Introduction The quality standards for transportation infrastructure have evolved considerably over the last three decades. The data accuracy requirements to support road management have decreased from tens of meters to a few decimeters with annual update rates. Roads are prioritized for maintenance and treatment as a result of pavement inspections. The cost of frequent, comprehensive inspec...

Çalışmada üstyapı performans göstergesi olarak kullanılan Üstyapı Durum İndeksi (PCI) ve yolcu otomobilinde maruz kalınan tüm vücut titreşimi miktarı arasındaki ilişkilerin matematik modellenmesi amaçlanmıştır. Titreşim ölçümleri, teknik detayları ISO 2631 standardında açıklanan frekans ağırlıklı veri işleme yöntemine göre analiz edilerek düşey doğrultuda aw değerleri elde edilmiştir. Bitümlü s...

to properly plan for construction, repair, maintenance, and reconstruction of highways the minimum acceptable roadway condition is needed information. this, along with other pavement management tools, will help select the most desirable roadway alternatives. in this research the minimum acceptable conditions are developed based on an opinion survey of non-technical but high-level decision maker...

Pavement deterioration rate is very difficult to predict because of the complexities in determining the pavement condition rating or difficulty in collecting detailed data, particularly in absence of sophisticated equipment or trained staff etc. A wide variety of Pavement Maintenance Systems (PMS) are used, but unfortunately either these systems do not use a formalized procedure to determine th...

Surveying the condition of pavement is one most important processes in managing road network. The information collected during these surveys allows for calculation Pavement Condition Index, which a derivative cumulative qualitative indicator that evaluates various characteristics and defects. Deterioration modelling measured indicators calculated indices critical element its accurate prediction...

Natural pavements are an important element of flights. Among other things, they allow the plane to be safely slowed down after it has exited runway. For this reason, load bearing capacity natural airfield and strength turf layer at a specified level required. Currently used testing methods, such as CBR (Californian Bearing Ratio) tests or probe test, separately do not give full image pavement t...

Pavement construction and repair history is necessary for several pavement management functions such as developing pavement condition prediction models and developing maintenance and rehabilitation (M&R) trigger values based on past repair frequencies. It is often difficult to integrate M&R data with condition data since these data are often stored in disparate heterogeneous databases. This art...