Properties Analysis and Efficiency Evaluation of an Organomineral Composite Based on Recycled and Man-Made Raw Materials for the Construction of Highway Structures

Taking into account the increase in the pace of construction and repair works in the road construction industry caused by solving a set of problems of strategic development of the road network, the application of resource-saving technologies is a pressing task. Among various types of alternative raw materials, secondary and man-made resources in the form of asphalt concrete granulate and fly ash, which are formed in large quantities and have the potential for reuse in combination with various types of binders, are of particular interest. In the framework of the presented study, the physicomechanical properties of organomineral composites – asphalt granule concrete based on asphalt granulate using various types of fly ash as structure formation regulators in combination with various binder systems were studied. It was found that with a joint use of secondary and man-made raw materials, asphalt granule concrete has the following properties: R₂₂ (7 days) – 0.48–0.61 MPa; R₄₀ (7 days) – 0.41–0.58 MPa; R₂₂ (28 days) – 1.23–1.47 MPa; water resistance – 0.73–0.85. The design and calculation of Category III road structures for base layer replacement and Category IV road structures for pavement replacement resulted in a reduction in overall structural thickness of 9 and 3 cm, respectively, along with safety factors of K_pr=1.8 and K_pr=1.41, respectively. The cost-effectiveness of the developed solutions is 14.74% for Category III structures and 38.17% for Category IV structures.

I.Yu. MARKOVA, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
V.V. STROKOVA, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
M.A. STEPANENKO, Senior Lecturer (This email address is being protected from spambots. You need JavaScript enabled to view it.),
S.A. GNEZDILOVA, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
L.N. BOTSMAN, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Belgorod State Technological University named after V.G. Shukhov (308012, Belgorod, Kostyukov Street, 46)

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