Article

Received 01.02.2025

Revised 23.05.2025

Accepted 24.06.2025

Retrieved from Iss. 117, P. 2, 2025

Pages 51 -62

Gameliak, I., Kharchenko, A., & Dmytrychenko, A. (2025). IMPACT OF DEFECTS AND DESTRUCTION ON THE CHANGE IN THE BEARING CAPACITY AND DURABILITY OF RIGID PAVEMENT STRUCTURES. Part 2. Automobile Roads and Road Construction, (117.2), 51-62. https://doi.org/10.33744/0365-8171-2025-117.2-051-062

IMPACT OF DEFECTS AND DESTRUCTION ON THE CHANGE IN THE BEARING CAPACITY AND DURABILITY OF RIGID PAVEMENT STRUCTURES. Part 2

Igor Gameliak Anna Kharchenko Andrii Dmytrychenko

The article is devoted to the assessment of the influence of mechanical damage to cement concrete pavements on their overall modulus of elasticity and durability. It is noted that the destruction caused by vehicles and weather conditions reduces the modulus of elasticity of the road pavements. The studies described in the article show that on damaged road sections the average modulus of elasticity can be 1.9 times lower than on undamaged ones. Various theoretical models and formulas are considered, in particular the Winkler-Zimmermann hypothesis and the Westergaard method, for calculating the stresses and deflections of slabs under loading in the center, at the edge and at the corner. The main type of failure of rigid road pavements is the chipping of the corners of the slabs, which is often observed in concrete without reinforcement. The analysis shows that the presence of a through crack can increase the deflection of the slab by 1.3-2.7 times. The authors concluded that it is more logical to consider the destruction due to a decrease in the modulus of elasticity of cement concrete, rather than due to a decrease in the layer thickness. The article also analyzes the influence of the modulus of elasticity of the base on the deflection of the slab. The optimal value for highways is 120-150 MPa. A formula is proposed for calculating the coefficients of reduction to equivalent bearing capacity for destruction in the form of chipping of corners and edges of slabs

rigid road pavements, defects and destruction, cracks, transition coefficient, slab, deflection, bending moment
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https://doi.org/10.33744/0365-8171-2025-117.2-051-062