Research of strength and condition of cement-concrete pavement on bridges by non-destructive methods




bridges, non-destructive methods, strength, cement-concrete pavement, thermal imaging inspection, reinforcement


The article presents the results of determining the strength of non-destructive methods of cement concrete pavement on bridges. According to the results of the research, a differential curve, a reliability curve and the inverse value of the accumulated frequency of compressive strength of cement concrete are constructed. It is established that the cement concrete of the investigated objects corresponds to the strength class according to the normative documents. However, the results of visual, instrumental and thermal imaging inspection of areas on the bridges revealed a number of defects in the cement-concrete pavement and pavement slabs, which can lead to loss of the pavement structure strength. In particular, it was found that the destruction of the inspected reinforced concrete slabs of bridges mainly occurs under the influence of corrosion and loss of the working part volume of the steel reinforcement, unsatisfactory condition of the compensation seams on the supports. It is determined that cracks in reinforced concrete slabs occur due to low resistance of concrete to bending loads, due to which steel reinforcement is exposed to aggressive environments. In turn, it was proved that structural cracks in concrete occurred due to excessive loading, which led to overstrain of the structure, and non-structural cracks - due to internal stresses caused by thermal loads and various linear expansions of materials. Thermal imaging study revealed a significant difference in temperature in the pavement structural elements, which in the future leads to the destruction of cement-concrete pavement. It was found that the peeling of the protective layer of metal reinforcement on the studied bridges is caused by the phenomenon of electro-chemical corrosion.

The experience analysis of cement-concrete pavement of the studied objects allows to prepare proposals for the construction of cement-concrete pavement of bridges and overpasses using modern materials, in particular, non-metallic reinforcement.

Author Biographies

Ihor Gameliak, National Transport University

Doctor of Technical Sciences, Head of the Department of Airports

Anna Kharchenko, National Transport University

Doctor of Technical Science, Associate Professor of the Department of Transport Construction and Property Management

Andrii Dmytrychenko, National Transport University

Candidate of Technical Sciences, Associate Professor of the Department of Transport Law and Logistics

Vitalii Tsybulskyi, National Transport University

Candidate of Technical Sciences, Senior Lecturer of the Department of Strength of Materials and Mechanical Engineering


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