Utilization of recycled concrete aggregates for developing high-performance and durable flexible pavements

Akbas, Merve; Ozaslan, Bilal; Iyisan, Recep

doi:10.1016/j.conbuildmat.2023.133479

Cited by 16 publications

(1 citation statement)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Research conducted on the effect of reinforcement number and repetitive load on crack width in one-way concrete slabs is an important contribution to the understanding of cracks in concrete structures [11]. According to the study, cracks in concrete are difficult to avoid because concrete is weak against tensile strain [12]. In the context of reinforced concrete, the tensile strength due to external loads is carried by steel reinforcement, but if the tensile force caused by the load exceeds the critical stress of the concrete, the cracks will grow larger.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Effect of variations in concrete quality on the crack width in rigid pavement

Wisnumurti,

Soehardjono,

Simatupang

2024

EEJET

View full text Add to dashboard Cite

Cracks pose a significant issue in rigid pavement, leading to substantial damage. The manual mixing and casting of road pavement concrete underscore the importance of concrete quality as a critical parameter. This study investigates crack behavior by varying concrete quality. Loading is performed statically using line loads, shedding light on the impact of concrete quality on crack development. The concrete to be used has a quality fc' of 15 MPa, 25 MPa, and 35 MPa. The fine aggregate used in this study was Lumajang black sand, while the coarse aggregate used was machine crushed stone, and Portland Composite Cement (PCC) was used in all concrete mixes. The reinforcing steel used had a quality fy of 480 MPa, with a reinforcement ratio of ρ=0.010, which was converted to 5-D16 reinforcement. The subgrade density used to support the specimens had a CBR value of 10 %. Specimen dimensions were 2×0.6×0.2 m for length, width, and thickness. Pavement plates, 30 cm thick, were placed on leveled subgrade soil in a steel box set to achieve a 6 % CBR reading. Hydraulic jacks, monitored by a load cell, applied monotonic static loading with 2 kN intervals, reaching a maximum load of 200 kN. Steel tension and plate settlement were measured using a tension sensor and Linear Variable Differential Transformer (LVDT), respectively. A data logger recorded readings, and crack widths were captured by a digital microscope with 0.01 mm accuracy. Experimental results show that low concrete compressive strength values result in larger crack widths, and vice versa. Cracks also occur at earlier loading of concrete quality fc' 15 MPa. In addition, experiments show that the reinforcement stress value has a significant influence on crack width in specimens with low concrete quality

show abstract

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Effect of variations in concrete quality on the crack width in rigid pavement

Wisnumurti,

Soehardjono,

Simatupang

2024

EEJET

View full text Add to dashboard Cite

show abstract

Numerical Simulation Study on Optimization of Freezing Pipe Position under Seepage Conditions Based on Simulated Annealing Algorithm

Song

2024

KSCE J Civ Eng

View full text Add to dashboard Cite

Exploring the chemical properties and microstructural characterisations of hybrid asphalt binders for enhanced performance

Mior Sani,

Jaya,

Masri

et al. 2024

Discov Appl Sci

View full text Add to dashboard Cite

Approximately 3 billion metric tonnes of garbage involving industrial and agricultural waste is expected to be generated by 2030, posing a significant environmental hazard. Notably, recycling or reusing asphalt modification components (palm oil fuel ash (POFA), garnet waste, and sawdust) in pavement construction encounter ongoing challenges. This study comprehensively assessed the chemical characteristics and microstructure analysis of individual wastes and various hybrid asphalt binder and mixtures incorporated with these components. The mixture consisted of asphalt grade 60/70 blended with varying amounts (0%, 3%, 6%, and 9%) of POFA, garnet waste, and sawdust. Fourier transform infrared spectroscopy (FTIR), X-ray fluorescence (XRF), and X-ray diffraction (XRD) analyses were also employed to examine the chemical compositions of the raw waste materials. Meanwhile, the microstructure properties of various hybrid asphalt binder mixtures were analysed utilising Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). Consequently, this study presented that the correlation between the 6% POFA, 6% garnet waste, and 6% sawdust substantially impacted the chemical composition and morphology of the mixture. The findings of this study demonstrated that including POFA, garnet waste, and sawdust in a hybrid asphalt binder and mixture could enhance performance and engineering properties.

show abstract

Utilization of recycled concrete aggregates for developing high-performance and durable flexible pavements

Cited by 16 publications

References 60 publications

Effect of variations in concrete quality on the crack width in rigid pavement

Effect of variations in concrete quality on the crack width in rigid pavement

Numerical Simulation Study on Optimization of Freezing Pipe Position under Seepage Conditions Based on Simulated Annealing Algorithm

Exploring the chemical properties and microstructural characterisations of hybrid asphalt binders for enhanced performance

Contact Info

Product

Resources

About