The effect of coarse to fine aggregate ratio on the fresh and hardened properties of roller-compacted concrete pavement

Hashemi, Mohammad; Atiş, Cengiz Duran; Karim, Mohamed Rehan

doi:10.1016/j.conbuildmat.2018.02.216

Cited by 52 publications

(42 citation statements)

References 8 publications

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“…The correlation between splitting tensile strength and flexural tensile strength (Figure 7d) displays a strong correlation index (R² = 0.9758). The same strong correlation was observed by Lopez-Uceda et al [8] with R² = 0.9466 and Hashemi et al [49] with R² = 0.9117 who observed a positive correlation between these properties in RCC with 9% and 12% cement content and NA. In addition, the adjusted correlation in this research study presented a negative trend, unlike the correlations adjusted by Lopez-Uceda et al [8] and Hashemi et al [49].…”

Section: Resultssupporting

confidence: 80%

“…The same strong correlation was observed by Lopez-Uceda et al [8] with R² = 0.9466 and Hashemi et al [49] with R² = 0.9117 who observed a positive correlation between these properties in RCC with 9% and 12% cement content and NA. In addition, the adjusted correlation in this research study presented a negative trend, unlike the correlations adjusted by Lopez-Uceda et al [8] and Hashemi et al [49]. Figure 7a suggests the correlation between compressive strength at 28 days and splitting tensile strength at the same age, and it is weaker because correlation index is low (R 2 = 0.1418).…”

Section: Resultssupporting

confidence: 80%

“…The correlation between splitting tensile strength and flexural tensile strength (Figure 7d) displays a strong correlation index (R 2 = 0.9758). The same strong correlation was observed by Lopez-Uceda et al [8] with R 2 = 0.9466 and Hashemi et al [49] with R 2 = 0.9117 who observed a positive correlation between these properties in RCC with 9% and 12% cement content and NA.…”

Section: Resultssupporting

confidence: 80%

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Roller Compacted Concrete with Recycled Concrete Aggregate for Paving Bases

Fardin

Santos

2020

Sustainability

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This research aimed to investigate the mechanical and physical properties of Roller Compacted Concrete (RCC) used with Recycled Concrete Aggregate (RCA) as a replacement for natural coarse aggregate. The maximum dry density method was adopted to prepare RCC mixtures with 200 kg/m³ of cement content and coarse natural aggregates in the concrete mixture. Four RCC mixtures were produced from different RCA incorporation ratios (0%, 5%, 15%, and 30%). The compaction test, compressive strength, splitting tensile strength, flexural tensile strength, and modulus of elasticity, porosity, density, and water absorption tests were performed to analyze the mechanical and physical properties of the mixtures. One-way Analysis of Variance (ANOVA) was used to identify the influences of RCA on RCC’s mechanical properties. As RCA increased in mixtures, some mechanical properties were observed to decrease, such as modulus of elasticity, but the same was not observed in the splitting tensile strength. All RCCs displayed compressive strength greater than 15.0 MPa at 28 days, splitting tensile strength above 1.9 MPa, flexural tensile strength above 2.9 MPa, and modulus of elasticity above 19.0 GPa. According to Brazilian standards, the RCA added to RCC could be used for base layers.

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Section: Resultssupporting

confidence: 80%

Section: Resultssupporting

confidence: 80%

Section: Resultssupporting

confidence: 80%

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Roller Compacted Concrete with Recycled Concrete Aggregate for Paving Bases

Fardin

Santos

2020

Sustainability

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“…In this way, after evaporation of air from the oven dried samples, the water fills the pores under vacuum to reach full saturation. This method has been proposed by many other researchers [29,30].…”

Section: Porositymentioning

confidence: 99%

Laboratory comparison of roller-compacted concrete and ordinary vibrated concrete for pavement structures

2020

JCE

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Laboratory comparison of roller-compacted concrete and ordinary vibrated concrete for pavement structures The roller-compacted concrete pavement (RCCP) has the same ingredients as the pavement made of normal vibrated concrete (NVC). Microstructure images show that RCCP has higher pack density compared to NVC specimens. The 28-day compressive, splitting tensile, and flexural strengths of RCCP are by 9%, 4%, and 25% higher than those of NVC. The final water absorption and porosity values are by about 8% and 10.6% lower for RCCP in comparison with NVC.

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“…Cement concrete, a widely used construction material, requires good quality aggregates for its production in order to ensure its optimal performance. Aggregates, generally, are considered as volumetric material and occupying 65-75% of concrete volume, it plays a vital role, as it contributes more to the fresh and hardened stated properties of concrete [1][2][3][4]. However, studies [5][6][7] have reported that the increasing use of the natural aggregates could quicken the depletion of the sources.…”

Section: Introductionmentioning

confidence: 99%

Fresh properties of self-compacting concrete incorporating electric arc furnace oxidizing slag (EAFOS) as coarse aggregate

Murthi¹,

Poongodi²,

Awoyera

et al. 2020

SN Appl. Sci.

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This study investigates the fresh properties of self-compacting concrete incorporating electric arc furnace oxidizing slag as coarse aggregate. A binary blend of 30% fly ash and cement was utilized as binder to improve the performance of concrete in its fresh state. Concrete grades M20, M30 and M40 were developed by replacing natural coarse aggregate with 50% and 100% electric arc furnace oxidizing slag (EAFOS) aggregate. Thus, fresh properties of SCC; slump flow, T500, U box, V funnel and L-box were determined. From the evaluation of fresh properties, it is shown that the grades of concretes developed passed the set standard limits for SCC. The results showed that 50% EAFOS addition to SCC will not deter its fresh properties in any way, however, when EAFOS was added up to 100%, there was reduction in workability properties of the concrete. The study showcases the significant potential of EAFOS as an alternative aggregate in SCC. Thus, the data provided in this study will be useful for concrete constructors.

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The effect of coarse to fine aggregate ratio on the fresh and hardened properties of roller-compacted concrete pavement

Cited by 52 publications

References 8 publications

Roller Compacted Concrete with Recycled Concrete Aggregate for Paving Bases

Roller Compacted Concrete with Recycled Concrete Aggregate for Paving Bases

Laboratory comparison of roller-compacted concrete and ordinary vibrated concrete for pavement structures

Fresh properties of self-compacting concrete incorporating electric arc furnace oxidizing slag (EAFOS) as coarse aggregate

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