scholarly journals Evaluation of the interaction of tyre tread with asphalt concrete coating depending on weather-climatic conditions

2021 ◽  
Vol 18 (4) ◽  
pp. 122-126
Author(s):  
I. S. Gladushevskiy ◽  
Keyword(s):  
Asphalt Concrete ◽  
Weather Conditions ◽  
Concrete Surface ◽  
Climatic Conditions ◽  
Road Surface ◽  
Coupling Coefficients ◽  
Internal Factors ◽  
The Road ◽  
Concrete Coating

The tyre tread coupling with the road surface depends on a number of both external and internal factors. The controllability of the vehicle depends on the interaction between two materials. The article considers various tyre tread characteristics, the values of the coupling coefficients are determined for the tyre tread of M1 category vehicles during operation on different road conditions. The interaction of a new and worn tyre tread with the road surface has been assessed with vehicles driving on the asphalt concrete surface, taking into account weather conditions.

scholarly journals Investigation of the wear of asphalt concrete pavement taking into account the influence of temperature, moisture of the pavement and the presence of an aggressive environment

2021 ◽  
Vol 2 (92) ◽  
pp. 68
Author(s):  
Andrii Siedov ◽  
Olena Fomenko
Keyword(s):  
Asphalt Concrete ◽  
High Speed ◽  
Climatic Factors ◽  
Load Capacity ◽  
Weather Conditions ◽  
Road Surface ◽  
Winter Period ◽  
Influence Of Temperature ◽  
The Road ◽  
Industrial Enterprises

Abstract. The emergence of a large number of modern high-speed cars with improved dynamic characteristics and an increase in the share of cars, especially large load capacity, have significantly accelerated the destruction of asphalt roads. Plastic deformations, tracks and cracks are more and more often observed on asphalt concrete pavements of roads, their wear is accelerated. As a result, the transport and operational condition of roads deteriorates, the speed of traffic decreases, the cost of road transport increases, and increasing costs are required for road repairs. Thus, the conditions of traction of the wheels of the car with the road surface are influenced by the service life of the coating, traffic intensity, the amount of harmful emissions of industrial enterprises and climatic factors. At the same time uneven change of conditions of coupling in cross and longitudinal profiles of the highway comes to light. Analyzing the natural and climatic factors, we can establish that different weather conditions have different effects on the condition of the road surface. In summer, the condition of the surface is dry and clean, so the driving conditions are safe. Taking into account all the factors that lead to the destruction of the coating with the formation of residual deformations and irreversible changes, requires the study of wear of the coating surface. he wear of the coating largely depends on the friction force in the area of contact of the tire with the surface of the coating, the type of tires and the pressure in the tires. But the random nature of changes in the intensity and composition of traffic, seasons, temperature, humidity, rainfall affects the amount of wear over a period of operation of the road surface. The presence of water or solutions in the pores of the coating leads to the separation of mineral particles from the layer under the action of impact force from the wheels of vehicles. It is experimentally established that the wear of asphalt concrete in the dry and wet state increases with increasing temperature. One of the main types of damage to road surfaces is their premature wear under the influence of vehicle wheels, in combination with changing weather conditions. Analyzing the natural and climatic factors, we can establish that different weather conditions have different effects on the condition of the road surface. The article considers the influence of temperature, humidity and the presence of solutions of chloride anti-icing materials on the process of abrasion of asphalt pavement in the autumn-winter period. Occurrence of big differences of temperature and humidity accelerates processes of aging of materials from which layers are made, influencing their durability and wear resistance.

scholarly journals Mathematical modeling of improving the characteristics of bitumen for asphalt concrete by modifying

2021 ◽  
Vol 2131 (4) ◽  
pp. 042039
Author(s):  
G Provatorova ◽  
K Ryabinina
Keyword(s):  
Asphalt Concrete ◽  
Weather Conditions ◽  
Road Surface ◽  
Rutting Resistance ◽  
The Road ◽  
Concrete Mixtures ◽  
Additional Equipment ◽  
Materials Used ◽  
Modified Binder ◽  
The Stability

Abstract A significant increase in traffic intensity and increased axle loads of vehicles on the roads led to the fact that asphalt concrete is not able to provide the required durability of road surfaces. The durability of asphalt concrete pavements is directly related to the quality of the materials used, primarily bitumen. Bitumen is most susceptible to changes under the influence of traffic loads and weather conditions. At the same time, bitumen largely determines the condition of the road surface. The behavior of bitumen can be changed by modifying it with additives. The novelty of bitumen modification lies in the fact that the addition of polymer to bitumen makes it possible to obtain a road surface that is resistant to cracking at low temperatures and to provide fatigue strength at high temperatures. Rutting resistance is also achieved. An important role in the choice of the modifier is played by economic issues related to the rise in the cost of coating, as well as the need to use additional equipment, the stability of the modified binder during storage and transportation, etc. Carbon nanotubes (CNTs) were used as a modifier for asphalt concrete mixtures. During the experiment, a significant improvement in the main indicators of asphalt concrete mixtures was revealed, as well as the maximum permissible deviations for the amount of binder in the asphalt concrete mixture and for the main indicators were observed. Moreover, the most important thing that has been achieved is a significant increase in rutting resistance by rolling a loaded wheel.

scholarly journals Analisis Kebutuhan dan Biaya Alat Berat untuk Pekerjaan Pemadatan Lapisan Permukaan Street-Race Circuit Mandalika

2021 ◽  
pp. 1-8
Author(s):  
A. Fihani ◽  
Hasyim Hasyim ◽  
I.D.M.A. Karyawan
Keyword(s):  
Surface Layer ◽  
Asphalt Concrete ◽  
Road Surface ◽  
Pneumatic Tire ◽  
Total Cost ◽  
Air Compressor ◽  
The Road ◽  
Heavy Equipment ◽  
Dump Trucks ◽  
Base Course

The Street-Race Circuit is being built in the Mandalika Tourism Special Economic Zone (KEK), Central Lombok, West Nusa Tenggara. The construction is targeted to be completed, before the MotoGP event on this circuit is implemented in 2021. One of the infrastructure related to this, which also really needs to be built to support the smooth running of the 2021 MotoGP is the development of access to the circuit location. The analysis carried out includes the calculation of heavy equipment productivity. Heavy equipment productivity is determined based on cycle times, production per hour, number of heavy equipment used, the amount of operating costs per hour. The analysis was carried out for the road surface layer work, namely the Asphalt Concrete Base Course (AC-BC) work. Based on the results of the analysis, it was found that the production for 1 unit of asphalt mixing plant (AMP) was 49.80 tons/hour and 9 units of dump trucks were 2.34 tons/hour. The spreader using the asphalt finisher can spread 109.18 tons/hour. As for the compactor, which is 18.55 tons/hour for 2 units of tandem rollers and 27.47 tons/hour for 1 unit of pneumatic tire roller. Other equipment is 9.96 m2/hour for air compressor and 2.74 liter/hour for asphalt sprayer. Meanwhile, in the Asphalt Concrete Wearing Course (AC-WC) work, several tools have the same productivity as the AC-BC job, namely asphalt mixing plant, air compressor and asphalt sprayer. Meanwhile, 13 units of Dump Trucks amounted to 2,338 tons/hour, 1 unit of asphalt finisher of 72,787 tons/hour, 3 units of tandem rollers of 12,367 tons/hour, and 1 unit of pneumatic tire roller of 18.31 tons/hour. The total cost of using heavy equipment for road surface layer work is Rp. 4,967,657,344. The total cost based on the contract document is Rp. 5,042,082,622. So that there is a difference in costs of Rp. 74,425,278.

scholarly journals Design Criteria for the Floating Walkways and Pontoons Considering the Extreme Climatic Conditions

2020 ◽  
Author(s):  
Sami M. Ayyad
Keyword(s):  
Weather Conditions ◽  
Climatic Conditions ◽  
Design Criteria ◽  
Internet Service ◽  
The Road ◽  
The Waves

Construction of Pontoons is based on multiple elements, dimensions and weight. The study has addressed about how the industry of the floating reinforcement concrete precast (pontoons) installs in the factory with the combinations of utility, electricity services, and Internet service. The pontoon bridges are successfully installed in the road for transport or sea for shops. The installation process for pontoons is successfully attempted in a balanced situation above surface of the sea to the resistant of floating precast (pontoons) to any ambient effects such as weather conditions, the movement of the waves or any others effects. The findings elaborate that it is not just a military solution. Pontoon installation can significantly serve for civil purposes.

scholarly journals METHODS FOR DETERMINING THE FRICTION COEFFICIENT OF THE ROAD SURFACE / TRINTIES KOEFICIENTO SU KELIO DANGA NUSTATYMO METODAI

2019 ◽  
Vol 11 (0) ◽  
pp. 1-6
Author(s):  
Elena Perova ◽  
Evgeniya Ugnenko ◽  
Gintas Viselga ◽  
Ina Tetsman
Keyword(s):  
Friction Coefficient ◽  
Literature Review ◽  
Weather Forecasting ◽  
Weather Conditions ◽  
Air Traffic ◽  
Road Surface ◽  
The Road ◽  
Frictional Properties ◽  
Air Traffic Controllers ◽  
Comprehensive Literature Review

In spite of advances in aviation technology, operational procedures and weather forecasting, safe winter runway operations remain a challenge for airport operators, air traffic controllers, airlines and pilots who must coordinate their actions under rapidly-changing weather conditions. The paper analyses most popular methods for determining the friction coefficient of the road surface. Their advantages, disadvantages and comparison of their modern instruments for measuring the frictional properties of airfields is shown. Most of the information was derived from a comprehensive literature review. Santrauka Nepaisant aviacijos technologijų pažangos, operacinių procedūrų ir oro prognozių, saugios kilimo ir tūpimo tako operacijos žiemą išlieka iššūkiu oro uostų valdytojams, skrydžių vadovams, oro linijoms ir pilotams, kurie turi koordinuoti savo veiksmus sparčiai besikeičiančiomis oro sąlygomis. Straipsnyje analizuojami populiariausieji kelio dangos trinties koeficiento nustatymo metodai. Pateikiami jų privalumai, trūkumai ir lyginami jų modernūs prietaisai, skirti aerodromų trinties savybėms matuoti. Didžioji dalis informacijos buvo gauta iš išsamios literatūros apžvalgos.

scholarly journals Analysis of the criteria for calculating non-rigid pavements in conditions of intense traffic flow

2018 ◽  
Vol 5 (3) ◽  
Author(s):  
Evgenia Uglova ◽  
Olga Shilo
Keyword(s):  
Life Cycle ◽  
Asphalt Concrete ◽  
Building Materials ◽  
Climatic Conditions ◽  
Method Of Calculation ◽  
The Road ◽  
Rigid Pavements ◽  
Load Carrying ◽  
Number Of Cycles ◽  
New Criterion

Domestic methods of designing and calculating non-rigid pavements were modified in parallel with changes in the load-carrying capacity of vehicles and an increase in the average traffic intensity of cars. With the increase in the level of costs for the construction and repair of road clothes, the level of responsibility for design has increased. However, more often at the operational stage, early defects of asphalt-concrete layers are detected and premature reduction of the bearing capacity of the structure as a whole. This only indicates that the prediction of the service life in the design of traditional methods is not reliable. The reasons for this may be several: erroneous determination of the number of cycles of the annual loading of the structure, a distorted or ineffective consideration of the climatic conditions of operation of the road-building materials of the layers, an inaccurate technique for determining the maximum permissible and emerging deformations, and also accumulating them during operation. As a result, the issues of construction of road clothes, requirements for them and the design of highways in general are being revised. Obviously, the traditional method of calculation, as a minimum, can not be considered universal. The authors presented a new approach to calculating the strength of non-rigid pavements by the criterion of accumulation of fatigue damages of asphalt-concrete layers, which can provide reliable prediction of the pavement life cycle, because it is based on the multifactorial influence of external environmental impact. Modeling such a multifactor process as the life cycle of a design is a complex computational task. Active integration of computer technologies into modern life and construction processes allows solving this task with the help of a computer, by developing application programs. At the department of «Highways» DSTU developed a software package Pavement Life Cycle, able to make calculations based on a new criterion for calculating non-rigid road clothes. The article is part of the dissertation research of the second author.

scholarly journals The Preparation of the Quick-Drying Bitumen Emulsion for the Protection of the Road Surface Asphalt Concrete Layer

2016 ◽  
Vol 32 (6) ◽  
pp. 3129-3134 ◽  
Author(s):  
Victoria Ryabenko ◽  
Elena Chigorina ◽  
Anatoly Razinov ◽  
Yulia Ubaskina ◽  
Ivan Kovtun
Keyword(s):  
Asphalt Concrete ◽  
Road Surface ◽  
The Road ◽  
Bitumen Emulsion ◽  
Concrete Layer

Research on the Electrical Energy of Piezoelectric-Embedded Asphalt Mixture

2013 ◽  
Vol 303-306 ◽  
pp. 26-31 ◽  
Author(s):  
Ning Tang ◽  
Chang Jun Sun ◽  
Shao Xu Huang ◽  
Pan Pan ◽  
Shao Peng Wu
Keyword(s):  
Asphalt Concrete ◽  
Road Safety ◽  
Vibrational Energy ◽  
Piezoelectric Materials ◽  
Asphalt Mixture ◽  
Electrical Energy ◽  
Road Surface ◽  
The Road ◽  
Road Lighting ◽  
Road Performance

There is an important effect on road safety with no lighting facilities near the wild road. With the piezoelectric materials embedded in the asphalt concrete as the smart aggregates, the piezoelectric asphalt concrete transforms the vibrational energy of road surface into electrical energy, to supply the road lighting facilities or be stored up. In this study, the electrical energy of piezoelectric-embedded asphalt mixture by using UTM and wheel tester. The results show that PMnS-PZN-PZT ceramic doped with 0.45wt% Fe2O3 (4mm×8pieces) be embedded in the AC-10 asphalt concrete which can obtain well road performance and micropower electrical energy.

scholarly journals Assessing the Effects of the Road Surface and Weather Conditions on Road Safety

2019 ◽  
Vol 49 (3) ◽  
pp. 323-349 ◽  
Author(s):  
Marcin Budzyński ◽  
Agnieszka Tubis
Keyword(s):  
Road Safety ◽  
Significant Contribution ◽  
Weather Conditions ◽  
Road Surface ◽  
Road Accidents ◽  
Driver Behaviour ◽  
Safe Delivery ◽  
The Road ◽  
External Conditions

Abstract When transport is analysed for its safe delivery the focus is mainly on assessing the safety of roads and the risk of undesired events. These include road accidents, an occurrence which is relatively rare and random. Randomness means that accidents depend on several factors which are partly deterministic and partly. The authors conducted an assessment of how weather conditions affect the risk of an accident due to the factor’s significant contribution to road accidents. This case involves a combination of two sources of hazard: external conditions in the form of the weather which are beyond the driver’s control and anthropotechnical factors that address vehicle condition and driver behaviour controlled by the driver.

scholarly journals IDENTIFICATION OF INDICATORS OF INTERACTING INDUSTRIAL ENTERPRISE SUBSYSTEMS FOR ACHIEVING QUALITY MANAGEMENT PURPOSES

2021 ◽  
Vol 5 (12) ◽  
pp. 136-144
Author(s):  
O. Anikeeva ◽  
A. Ivahnenko ◽  
M. Storublev
Keyword(s):  
Asphalt Concrete ◽  
Weather Conditions ◽  
Poor Quality ◽  
Engineering Structures ◽  
Repair Work ◽  
The Road ◽  
Bitumen Emulsion ◽  
On The Road ◽  
Asphalt Concrete Pavement ◽  
The Impact

Highways are the most important component of country's economic development. They are a complex of engineering structures that are subject to various kinds of deformations during operation. The causes of premature defects are outdated technologies, poor quality materials, high traffic loads, and weather conditions. On average, after 2–3 years of the new road operation, pits, overflows, potholes, cracks, rutting occur on asphalt concrete pavement, its presence worsens the traffic conditions on the road and violates the unimpeded passage of cars. To extend the life cycle of a transport object, there are preventive measures that prevent the destruction of road surfaces. Such activities include regular maintenance and repair work. One of the effective measures is the use of road impregnation materials (RIM). Road-impregnation materials are used in case of need to prevent aging of the organic binder in the composition of asphalt concrete in the coating, as well as to reduce the impact of external factors. In this article, the influence of the basis of the impregnating material of two manufacturers on the indicators of the properties of asphalt concrete of various degrees of destruction is investigated. Among the considered impregnating compositions, solvent-based road impregnation materials proved to be the most effective. It has been established that the abrasive effect on samples of asphalt concrete significantly reduces the effectiveness of impregnating materials, especially based on bitumen emulsion.

Sign in / Sign up

Export Citation Format

Share Document