The maintenance and repair of existing concrete structures in the field of civil engineering is very important and it needs engineers with broad experiential knowledge. The difficulties of structural damage assessment, diagnosing distresses and obtaining recommendations on materials and procedures for repair are sometimes more complicated. Seeking to apply a single form of knowledge representat...

Manual surveys still represent the most widely used means for inspecting and evaluating pavements. Manual rating of pavements through windshield surveys to identify the types of surface cracking and other distresses leads to relatively slow evaluation. Furthermore, the survey crew must sometimes physically be in the travel lane to evaluate the pavement, exposing themselves to hazardous conditio...

Polycystic Ovary Syndrome (PCOS) is a female endocrine disorder which severely distresses women’s health. The disorder is characterized by a collection of incomplete developed follicles in the ovaries. Manual analysis of PCOS diagnosis often produces errors. So, in recent years many researchers have been enthusiastically working in automatic detection of PCOS. This paper reviews follicle detect...

With the advancement of 3D line laser imaging technology (“3D technology”, hereafter for the sake of brevity), high-resolution 3D transverse profile data (“3D data”, hereafter for the sake of brevity), has gained widespread interest from researchers, industry and highway agencies and has been used for collecting pavement surface distresses. However, the study of data characteristics, e.g. data ...

Many agencies use the AASHTO Guide for Design of Pavement Structures to design their pavement systems. The limitation inherent in this method is the empirical nature of the decision process, which was derived from a road test conducted almost 45 years ago in Ottawa, Illinois. The newly released Mechanistic-Empirical Pavement Design Guide (MEPDG), based on NCHRP Study 1-37A, has adopted a mechan...

Using of software on many objects requires study of question of increase of reliability of such software. Each mistake can bring in software on such objects to serious consequences and even distresses. In addition conciseness of periods required for development, limitation does not often allow in human and financial resource to reach required parameters of software safety. So it is necessary to...

This paper describes a 3-D automated pavement distress data collection and analysis system based on NRC’s Biris sensor technology. The paper introduces the problem to be solved, the selected design criteria, and the adopted solution to monitor the quality of road surfaces. The system geometry for the acquisition of the threedimensional coordinates of pavement surface distresses is presented. Mu...

Initiatives are underway to implement the new Mechanistic-Empirical Pavement Design Guide (MEPDG) in Iowa. This paper focuses on the sensitivity study of Jointed Plain Concrete Pavements (JPCP) and Continuously Reinforced Concrete Pavements (CRCP) in Iowa using the MEPDG software. In this comprehensive study, the effect of MEPDG input parameters on the rigid pavement performance is evaluated us...