Overcoming Concreting Problems of Rigid Pavements using Knowledge-Based System

Abstract

Highway engineers encounter numerous problems during rigid pavement concreting. Thus, deciding on appropriate controlling measures is a crucial task. These problems affect the quality of pavements and increase initial cost. Experts can control them, but novices cannot. Therefore, this study describes the development of a novel knowledge-based system to control concreting problems of rigid pavements. The knowledge that includes problems encountered in the domain, their causes, preventive actions, solutions, and their effects was acquired from the experts by different methods and was presented in a classified format. The calcified knowledge was transferred into rules and coded in software by using Visual Basic. The system was tested by different users involved in highway engineering, including experts and novice engineers. The mean values of the overall system evaluation by the four types of users based on the 5-point Likert scale were 4 and 4.5 respectively. The developed system can be used to help highway engineers overcome the problems during concreting of rigid highway pavements, identify their causes, preventive actions, and effects on the construction process. It can also be used to help the experts formulate decisions quickly. The system facilitates decision making of domain experts by reducing unnecessary inputs, performing quick calculations, and providing classified recommendations. In addition, it can be used as an instructional tool for pavement engineers or highway engineering students, to interchange the expertise among the experts, and to transfer expertise to the next generation of engineers.

Evaluating the Shear Strength of Subbase-subgrade Interface Using Large Scale Direct Shear Test

“…Demand on transportation including its miscellaneous modes increases rapidly with the increase of global population (Hatem et al, 2018;Mosa et al, 2021a;Mosa et al, 2022a) to ensure smooth movement of persons and goods among different places in different countries Mohammed et al, 2019a;Mohammed et al, 2019b;. Among these transport modes, highways are the most important due their flexibility and efficiency for different users (Mohammed et al, 2018a;Mohammed et al, 2018b;Mosa, 2015;Mosa et al, 2011a).…”

“…To ensure that, several considerations must be taken. Tightness of underlying layers (subgrade and subbase) is a major factor that ensures the stability of the pavements system (Mosa, 2017c;Mosa, 2017d;Mosa et al, 2022b;. Therefore, investigation of the properties of these layers can improve the efficiency of the pavements system (Mosa, 2017e;Mosa et al, 2021b;Mosa et al, 2017;Salem et al, 2018).…”

Using nano silica to enhance the performance of recycled asphalt mixtures

“…Transportation essentially affects the economic growth of the countries [1][2][3][4][5][6]. Among transportation modes, highways can be considered as the major facility for the movement of the persons and goods [7][8][9][10][11].…”

Deformation behavior of flexible pavements by finite element simulation

“…Among the components of the highway which is the most important transport facility [1][2][3][4][5], flexible pavement is the major component [4,[6][7][8][9][10]. However, flexible pavement is applied to several types of distresses [11][12][13] affect its serviceability [14,15]; cracking and permanent deformations are the most distresses types [3,8,13].…”