Improvement of the quality of the geodesic support for the reconstruction of the roads

Abstract

Further development of the roadway network in Ukraine will basically take place by modernization, which, in fact, conversion of the system « Road Conditions-Traffic Flow-Environment» from one state to another. Generally, it changes not only the spatial axle position of an existing road, but also the geometric and technological parameters of the road. Modern technological design and construction processes demand higher accuracy and reliability in determining the output spatial parameters measured with survey methods and techniques. Therefore, substantiated higher accuracies and improved survey techniques are tasks of primary importance. They must be solved on the basis of determination of rational error limits in survey works and their influence on the accuracy of building, transport operational and economical parameters of the project and actual engineering structures. The objective of the study is to demonstrate possibilities and efficiency in using various models of the system of ensuring the accuracy in survey works for roadway modernization and for solving other tasks on determination of geometric element parameters of complicated sections on existing roadways.

Study Effects of Gradation and Material Thermal Property of Chip Seal Aggregates in Roller Concrete Pavement Crack Healing by Image Processing and RMS

“…Pavement building is an essential aspect of modern living. Cement is one of the most important, and commonly used materials for construction, road building, and cement-containing products emit a substantial quantity of greenhouse gas [3]. Utilizing natural and raw resources causes environmental devastation and disturbance of natural ecosystems [4].…”

Mathematical Support of Machine Surfacing for the Railway Track

“…The track maintenance is provided by the following sequence of actions: 1) measurement of its full-scale geometrical shape; 2) conformance assessment with maintenance standards; 3) the aim of repair operations. There are various tools for measuring track geometry, from hand-held devices to computerized machine systems [1,2,3], including the application of cutting-edge satellite technologies [4,5]. But any means of measurement requires further conversion of the results into a mathematical model of the railway track.…”