MATHEMATICAL MODELS OF THE PROPERTIES OF HIGH–STRENGTH CEMENT – CONCRETE FOR ROAD CONSTRUCTION
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2017, Vol 169, Issue 3
Abstract
We present the mathematical models of the properties of high-strength cement-concrete for road construction, which were received at the basis of factorial experiment planning and results from previous studies. Determination of the optimum compositions of cement concrete with a complex additive was carried out according to the following criteria: preservation of workability of concrete mixture over time, the contents of the entrained air, compressive strength and flexural strength, modulus of elasticity and economic efficiency. The results obtained became the basis for optimizing the composition of high-strength concrete used for construction of roads. The strength of road concrete tensile bending is the property that determines the fracture toughness, endurance and durability. There fore, the main criterion of optimization adopted by the tensile strength of concrete tensile bending. As constraints taken technological, physical, and mechanical properties of high-strength concrete and objective function of the cost of cement-concrete mixtures. As a result of optimization, is the optimal composition of the concrete for subsequent implementation in the construction of road pavement.
Authors and Affiliations
Igor Gameliak, Anzor Shurgaya, Jaroslav Jakymenko, Natalia Chyzhenko
Keywords
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