The article discusses the use of nano-modified cement. Comparative tests of samples made on the basis of the test material for compressive strength. A differential thermal analysis was performed.
Traditional and innovative ways of constructing temporary roads at a construction site are considered. The basic principles of the preparation of construction operations are given, which should be taken into account at this stage. Particular attention is paid to the preparation of the construction of the facility and preparation for the construction and installation works. The organization of designing construction roads, temporary and permanent, is considered. Methods for determining the parameters of construction roads are described. The main technical indicators of construction roads are given. Dangerous areas of the roads are indicated. The main purpose of the research is to generalize and systematize the modern ways of arrangement and operation of auto-roads on a construction site. For carrying out of the study the methodical and scientific literature on the subject was analyzed, and also the statistic methods of data investigation were used. The main results of the research is the accomplishment of estimation of expenses on arrangement of auto-roads, the indication of order of working out of design of the auto-roads, also the indication of necessity of use of permanent roads as temporary. The design of temporary and permanent construction roads is very important because of their greater use in comparison with railway transport and a great influence on the supply of construction materials.
Objective: The studies considered in the work on improving the certification system are relevant, have novelty, contribute to the development of the certification system with the introduction of a method that allows predicting the period between repairs of asphalt concrete pavements based on standard indicators.Methods: The work was carried out using theoretical research methods that allow characterizing the research model in order to create an image of the scheme being developed with decreasing contradictions and determining its main direction of functioning.Results:The necessity of the problem of efficiency criteria and limitations is substantiated to be reduced to a system-target model based on the hierarchy of the structure of the transport system and the corresponding modeling of the reconstructed system of transport support goals, the contradiction between the needs of the practice of improving the certification system for the integrated use of the transport system and the state of the scientific and methodological base for predicting the period between repairs of asphalt concrete pavements. Conclusion:The considered method of substantiating the economic efficiency of calculating the period between repairs of asphalt concrete pavements will provide an opportunity to develop recommendations for its development in the interests of strengthening economic and environmental safety.
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