Comparative investigation of laboratory and field compaction techniques for designing roller compacted concrete pavements (RCCP)

Selvam, M.; Singh, Surender

doi:10.1080/10298436.2023.2177850

Cited by 6 publications

(2 citation statements)

References 28 publications

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“…Likewise, Sengun et al ( 16 , 53 ) noticed a 47% reduction in the compressive strength of VT-compacted specimens compared with FSs. This negative effect could be ascribed to the lower compaction energy of the VT when compared with that of field compaction ( 54 ). These findings reveal that the existing ASTM parameters for the VH and VT methods must be tailored to simulate the field behavior in the laboratory.…”

Section: Resultsmentioning

confidence: 99%

Tailoring of Compaction Parameters of the Vibratory Table and Vibratory Hammer for Roller Compacted Concrete Pavements to Resemble Field Properties

Selvam

Singh

2023

Transportation Research Record: Journal of the Transportation R

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Previous studies have indicated that roller compacted concrete pavement may demonstrate significant variations in field behavior compared to laboratory specimens. This discrepancy can be attributed to the dissimilarities in compaction efforts between laboratory and field conditions, wherein the laboratory efforts fail to emulate the field compaction. Thus, in the present study, efforts have been made to optimize the compaction parameters, especially the number of layers of widely employed compaction methods, viz, the vibratory hammer (VH) and vibratory table (VT). A field slab was constructed using a duplex roller to provide a target value for the optimization process. Parameters such as packing density, fresh density, mechanical properties, viz, compressive, split tensile, and flexural strength, and porosity were considered for the tailoring process. Fresh density results showed that VT and VH-compacted specimens with ASTM parameters were loosely (−1.1%) and densely compacted (+5%), respectively, compared with field specimens (FSs). Therefore, to determine the optimal compaction parameters, the number of layers increased to five in the VT method and decreased to one in the VH method. Among different compaction layers, only the specimen fabricated with four layers and one layer in the VT and VH methods, respectively, could closely resemble the fresh, mechanical, and porosity of FSs. In addition, a new compaction procedure for fabricating prismatic specimens is developed for the VH and VT methods based on the compaction energy and packing density approaches.

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Section: Resultsmentioning

confidence: 99%

Tailoring of Compaction Parameters of the Vibratory Table and Vibratory Hammer for Roller Compacted Concrete Pavements to Resemble Field Properties

Selvam

Singh

2023

Transportation Research Record: Journal of the Transportation R

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“…For instance, in RCCP, the specimens were fabricated with a vibratory hammer, as compared with the vibratory table in JPCP. The employment of a vibratory hammer caused a denser packing (packing density—0.86), which produced higher compactness and thereby enhanced the strength ( 35 , 36 ). However, the use of a conventional vibratory table in the JPCP specimen preparation resulted in a dispersed aggregate skeleton (packing density—0.75) and a higher fraction of voids (0.25), thus negatively affecting the compressive strength.…”

Section: Resultsmentioning

confidence: 99%

Comparative Analysis of Jointed Plain Concrete Pavement and Roller-Compacted Concrete Pavement

Selvam

Kumar

Singh

2023

Transportation Research Record: Journal of the Transportation R

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Jointed plain concrete pavement (JPCP) is the widely preferred conventional concrete pavement for highways; however, the higher initial construction cost and extended time for traffic opening limit its applicability. Recent advancements like roller-compacted concrete pavement (RCCP) could address the above concerns of JPCP. Yet, there is a lack of knowledge and comparative studies on the performance assessment, sustainability, and economic analysis of RCCP and JPCP. Therefore, this study aims to evaluate the engineering properties (density, compressive and flexural strength, and fluid flow properties), cost analysis (materials and initial construction cost), and sustainability (carbon dioxide emissions and energy consumption) of both pavements. The fresh density and mechanical properties of RCCP were 8%–9% and 13%–35% higher than JPCP; thus, 44%–89% and 24%–57% reductions in water absorption and porosity were observed in the considered RCCP mixes against JPCP. The higher strength properties of RCCP significantly reduced the pavement thickness by 10%–25%, thereby lowering the materials and initial construction costs by 52%–78%. Further, sustainability assessment through the cradle-to-gate (from raw material extraction to transportation phase) and gate-to-gate (only concrete production in a ready-mix plant) approaches revealed that employment of RCCP could significantly reduce carbon dioxide emissions (9%–30%) and energy consumption (10%–32%) compared with JPCP mixes. The findings show that RCCP can be considered sustainable, economical, and higher-performance pavement than JPCP.

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Optimal Paste Volume Method: An Alternative Mixture Proportioning Method for Roller Compacted Concrete Pavement

Selvam,

Singh

2024

Transp. in Dev. Econ.

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Comparative investigation of laboratory and field compaction techniques for designing roller compacted concrete pavements (RCCP)

Cited by 6 publications

References 28 publications

Tailoring of Compaction Parameters of the Vibratory Table and Vibratory Hammer for Roller Compacted Concrete Pavements to Resemble Field Properties

Tailoring of Compaction Parameters of the Vibratory Table and Vibratory Hammer for Roller Compacted Concrete Pavements to Resemble Field Properties

Comparative Analysis of Jointed Plain Concrete Pavement and Roller-Compacted Concrete Pavement

Optimal Paste Volume Method: An Alternative Mixture Proportioning Method for Roller Compacted Concrete Pavement

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