Overview

This is a Code of Practice issued by the Republic of Kazakhstan that governs the design and calculation methodologies for flexible (non-rigid) road pavements (i.e., asphalt roads). Key Focus Areas: Application: It applies to the design of newly constructed, reconstructed, and sections of capital-repaired public highways. Core Objective: The main goal is to outline acceptable solutions and processes for designing flexible pavement structures to ensure they meet the durability and safety requirements of the corresponding Construction Norms (SN RK). Design Criteria: The document details the necessary calculations to ensure pavement strength and longevity against various destructive factors, including: Strength Calculation: Determining the required thickness and material properties based on expected traffic loads and intensity. Frost Resistance: Designing the pavement structure to withstand freezing and thawing cycles typical of Kazakhstan's climate (e.g., considering road climatic zones like V). Fatigue & Rutting: Calculations for preventing common forms of flexible pavement failure, such as cracking from fatigue (tension/bending in monolithic layers) and permanent deformation (rutting). Reinforcement: It includes provisions for designing the strengthening of existing road pavements. Materials: It references other standards (like GOSTs) for the required technical specifications of materials, such as crushed stone, gravel, sand, and asphalt mixes, used in the various layers of the road base and surfacing. In essence, it is the primary technical guide for civil engineers in Kazakhstan on how to calculate and specify the structure of an asphalt road to ensure it lasts its intended service life under local conditions and loads.

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