The basis of the technological evaluation of the composition of thermoplastic for road marking is the calculation of production costs associated with a particular technological scheme. In the most General form, any process for obtaining marking thermoplastics consists of the following technological operations: preparation of components; preparation of thermoplastic mixture; rastarivanie and packaging.
In principle, such schemes currently exist two: a scheme that determines the production of thermoplastics in the form of a dry mechanical mixture; a scheme that determines the production of thermoplastics in the form of homogeneous fused blocks.
Mixing of all components according to the first scheme in the mixer is made within three-five minutes. During mixing, liquid components are added to the mixer, if the latter are provided by the formulation. The finished mixture is discharged through a hole in the bottom of the mixer body.
Production under the second scheme has a number of undoubted advantages. This is a thorough dispersion of the components that make up the thermoplastic, which ensures uniformity of its properties in any part of the batch of manufactured material. When transporting the thermoplastic in the container does not require the shelter from atmospheric precipitation and can be stored for unlimited time in unheated warehouses.
From the given data it is visible that the developed compositions received as a result of performance of the present work, in comparison with analog possess the raised adhesion to asphalt concrete and elasticity in a temperature range from -10 oC to 20 oC. These indicators allow to draw a conclusion about the best resistance of the developed material in operating conditions, especially at negative temperatures.
When applying innovations or repeated effective technical solutions of the road sector, it is recommended to use the risk of damage assessment in the project documentation. This gives an opportunity for expert organizations reasonably give a positive conclusion on the project documentation. The method of calculating the risk of harm in the design of the junction to the road, taking into account the basic works of V.V. Stolyarov.
A typical example of the study based on the assessment and calculation of the risk of harm is considered. The study is carried out taking into account the Federal law «on technical regulation» and article 15, paragraph 6 of the Federal law «Technical regulations on the safety of buildings and structures» based on the assessment of the risk of failure to achieve the goals and requirements of the Federal law. The probability-theoretical approach, in particular the risk theory, allows to increase safety, comfort and convenience of movement by changing the geometric and transport and operational indicators of roads.
The parameters of the curve (radius of curve), the coefficient of adhesion, and the longitudinal slope affect the probability of the car’s stability loss on the radius of the carriageway rounding associated with the car skidding or tilting. This procedure is designed to determine and reduce to the acceptable risk the probability of occurrence of road transport facilities due to imperfections of road conditions (rounding parameters).
Technical regulation, risk assessment, damage assessment, risk theory, operations, life cycle, quality management, standards, probability approach, road management.
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