Efficient production of high-quality cubical crushed stone is critical for road construction and concrete manufacturing. Conventional vibrating screens suffer from low cubicality and high energy consumption, limiting their applicability. We developed a novel spiral vibrating screen featuring a helical screening surface and adjustable oscillation parameters. Experimental studies were conducted on granite aggregates (5–20 mm) at vibration frequencies of 16–26 Hz and amplitudes of 1.5–4.0 mm to evaluate cubicality, screening efficiency, throughput, and energy consumption. Under optimal operating conditions (22 Hz, 3.0 mm amplitude), the prototype achieved 84–86% cubical particles, 93–95% screening efficiency, and specific energy consumption of 1.20 ± 0.05 kWh/t. Compared with conventional flat and drum screens, cubicality improved by 8–12 percentage points, while energy consumption decreased by up to 12%. The developed screen offers a scalable solution for producing high-quality cubical aggregates with lower energy demand and reduced clogging risks. These findings provide practical guidance for improving aggregate processing technologies.

The article presents the results of experimental study for types of loose soils are easily subject to dusting. In connection with this problem, the task is the study and study of the causes and structure of the formation of dustiness in the roadside zone of roads with common types of coatings or without coatings. The experimental study aims to determine the drying time of chemical dust prevention solutions under the influence of solar radiation and the norm of their distribution. The object of the research is dust generated on roads with low transport and operational performance (temporary roads in places of road repair work, roads to quarries, etc.), and materials used for dedusting road surfaces. The problem to be solved is to reduce the emission of a large amount of dust on roads without pavements or with inferior types of pavements, which adversely affects the human body. The results obtained are the identification of a way to combat dust on road surfaces, ensuring a decrease in wear when vehicles move on roads without pavements. At the same time, the classification of dust according to their sources of formation is expected at the output result. Due to their features and characteristics, these results allowed the author to solve this problem - effective ways to combat dust on road surfaces are: treating them with dust-removing materials that reduce wear; maintaining the original evenness; reduction of air pollution; improvement of traffic conditions for cars and the sanitary and hygienic condition of roads near settlements. For experimental tests, traditional salt solutions of various concentrations (NaCl, MgCl₂, CaCl₂, MgCl₂×6H₂O, etc.) and solutions of foreign–made stabilizing additives Durasoil and Soiltac from SOILWORKS were taken.

Road transport fuel consumption is strongly affected by pavement conditions and road infrastructure, whereas conventional normative approaches primarily consider vehicle characteristics and operating conditions while neglecting pavement friction and infrastructure-induced driving cycles. This study develops and validates an integrated physical–mechanistic model for predicting actual fuel consumption on high-category roads by combining vehicle energy-balance equations with pavement diagnostic parameters and infrastructure constraints. Unlike existing mechanistic or empirical approaches, the proposed framework explicitly incorporates pavement friction as a quantitative indicator of both skid resistance and road-related energy losses, enabling the simultaneous assessment of traffic safety and fuel efficiency within a unified engineering model. The methodology was applied to the A-350 Almaty–Taldykorgan highway using telemetry from 150 independent vehicle-route observations, 840 complete corridor transits, approximately 4.8 million CAN-GPS records, and 340 pavement friction measurements. The results indicate that actual fuel consumption exceeded normative values by an average of 9.2%, while a reduction in pavement friction below the regulatory threshold was associated with a substantial increase in fuel consumption, further amplified by pedestrian crossings and urban road sections. Model calibration and independent validation demonstrated that the proposed model achieved strong predictive performance (R² = 0.94; MAE = 1.8%) under the observed operating conditions. This study extends existing fuel consumption modeling by reinterpreting pavement friction as a dual-purpose engineering indicator for both safety assessment and energy-efficiency diagnostics. The proposed methodology provides a scientific basis for corridor-level pavement management and infrastructure-related fuel-efficiency assessment and provides a conceptual foundation for future integration into intelligent transportation systems, subject to broader multi-corridor and seasonal validation.

The article presents the results of a comprehensive economic, statistical, marketing and geographical analysis and a comprehensive assessment of the city's hotel services sector. Criteria for comprehensive assessment: category of hotels and rooms; pricing policy, range of additional and standard services to be provided. In addition, a map of hotels in Almaty was created in the ArcGIS program.

The increasing demands for road safety and digitalization of transport infrastructure require advanced approaches for pavement condition assessment and information support for road users. This study aims to develop a digital road database based on field diagnostics for evaluating pavement condition and generating preliminary driving recommendations based on pavement operational condition. Field investigations were conducted on the Kostanay–Auliekol highway and the Western Europe–Western China international transport corridor. The methodology included visual inspections, measurements of pavement structural capacity using the MADI-CNIIL deflectometer and Benkelman beam, and pavement roughness evaluation using the TED-2M bump integrator and the International Roughness Index (IRI). The results showed that pavement strength coefficients ranged from 0.89 to 0.97, while IRI values varied between 1.2 and 2.0 m/km. A strong correlation between TED-2M readings and IRI values (R² = 0.9848) was established. A digital road database structure was developed to support pavement condition visualization, road safety assessment, and intelligent transportation systems.

Carbonate raw material processing generates significant limestone screenings and CO₂ emissions from the chemical decarbonization reaction (CaCO₃ → CaO + CO₂). Fragmented environmental measures fail to systematically reduce the overall environmental burden. This study develops an integrated approach to managing mineral and carbon flows. The methodology includes analysis of scientific publications, examination of technological schemes, balance modeling of material and carbon flows, and conceptual assessment of integrating Carbon Capture and Utilization (CCU) technologies into wet flue gas cleaning systems. Implementation of the integrated scheme enables the involvement of 85–95% of limestone screenings in secondary economic circulation. Process decarbonization calculations show CO₂ emissions reach approximately 0.418 t per ton of processed raw material (95% CaCO₃ content). CCU implementation with 60% capture efficiency reduces total CO₂ emissions by 30–40%. Comparative analysis reveals a synergistic environmental effect through comprehensive management of solid, particulate, and gaseous flows. Landfill volumes decrease by 6–10 times compared to fragmented management. The proposed concept aligns with circular economy principles and serves as a methodological basis for modernizing carbonate processing enterprises.