Identifying the influence of reinforcement ratio on crack behaviour of rigid pavement

Authors

DOI:

https://doi.org/10.15587/1729-4061.2023.290035

Keywords:

reinforcement ratio, cracking behavior, crack width, rigid pavement, concrete, load

Abstract

The problem found in many rigid pavement concrete slabs is the occurrence of cracks. Research on the width of cracks in rigid pavement due to the influence of reinforcement ratio is necessary because the stiffness and strength of concrete slabs are related to slab thickness, concrete quality, reinforcing steel quality and reinforcement numbers. This study aims to determine the cracking behavior of rigid pavements subjected to monotonic static line loads due to variations in reinforcement ratio experimentally. Specimens tested in the laboratory were 2×0.6×0.2 m concrete slabs placed on 30 cm thick soil with 6 % CBR value as a support. The variation of reinforcement ratio was ρ=0.004; ρ=0.007; ρ=0.01; ρ=0.02. Concrete quality fc=30 MPa, steel quality fu=580 MPa. The results shows at small reinforcement ratios the results are close to the average crack width of the formula from the regulations and at large reinforcement ratios the results are further away from the average crack width based on the formula in the regulations. The largest crack width observed in this study occurred in rigid pavement with a reinforcement ratio of ρ=0.004, under a load of 210 KN, resulting in a crack width of 0.519 mm. It was found that the relationship between crack width and the reinforcement ratio follows a linear equation across all variations. The research also revealed variations in crack width between experiments conducted under different design codes, with results closely aligning with the average crack width determined by rule-based formulas, especially for a small reinforcement ratio (ρ=0.004). Conversely, for a larger reinforcement ratio (ρ=0.01), the results deviated further from the crack width predicted by the code-based formula

Supporting Agency

  • Thank you to the Faculty of Engineering, University of Brawijaya Malang, which has funded this research, and to those who have contributed to the implementation of this research.

Author Biographies

Agoes Soehardjono, Brawijaya University

Professor

Department of Civil Engineering

Ari Wibowo, Brawijaya University

Doctor

Department of Civil Engineering

Devi Nuralinah, Brawijaya University

Doctor

Department of Civil Engineering

Candra Aditya, Brawijaya University

Doctoral Program

Department of Civil Engineering

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Identifying the influence of reinforcement ratio on crack behaviour of rigid pavement

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Published

2023-10-31

How to Cite

Soehardjono, A., Wibowo, A., Nuralinah, D., & Aditya, C. (2023). Identifying the influence of reinforcement ratio on crack behaviour of rigid pavement. Eastern-European Journal of Enterprise Technologies, 5(7 (125), 87–94. https://doi.org/10.15587/1729-4061.2023.290035

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Section

Applied mechanics