Superpave Gyratory Compactor as an Alternative Design Method for Roller Compacted Concrete in the Laboratory

Shabani, Reza; Şengün, Emin; Öztürk, Hande İşık; Alam, Burhan; Yaman, İsmail Özgür

doi:10.1061/(asce)mt.1943-5533.0003714

Cited by 13 publications

(2 citation statements)

References 16 publications

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“…The compactability of RCCP mixtures is generally determined by Vebe consistency time. The desirable Vebe time for better compactability is 20 to 40 s, in accordance with ACI 325.10R ( 51 ) and other research studies ( 52 , 53 ); a lower or higher Vebe time than the desirable range could result in heaving in front of rollers or poor compaction, which significantly affects the performance of RCCP. However, it should be noted that the desirable Vebe time shall consider the transit time of concrete and the application type.…”

Section: Resultssupporting

confidence: 85%

Enhancing the Performance of Roller-Compacted Concrete Pavement by Synergetic Improvement of Packing Density, Lubrication, and Moisture State of Recycled Concrete Aggregate

Selvam

Singh

Anjana

2023

Transportation Research Record: Journal of the Transportation R

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Roller-compacted concrete pavement (RCCP) is considered superior to other pavement types with reference to cost, ease of construction, and performance. However, the aggregate demand is significantly higher in RCCP than in the conventional concrete pavement. It is predicted that natural minable limestone sources would be exhausted in India in the next 30 to 40 years. One way to reduce the natural aggregates (NA) requirements in RCCP is through the integration of recycled concrete aggregates (RCA). However, the physical property of RCA is significantly inferior to that of NA owing to the presence of adhered mortar (AM), which increases the water demand by 2.3 to 4.6 times and affects the compactness and hardened-state behavior of RCCP. This study has tried to enhance the compactness and improve the performance of RCCP containing RCA (coarse, fine, and total RCAs) through different synergetic approaches. This, in turn, enhances the interlocking capacity using the particle packing approach, followed by mitigating the negative effects of AM by altering the moisture states, then improving the compactability and lubricating the matrix with superplasticizers. The results depict that altering the moisture states alone could adversely affect the RCCP performance because of the moisture transfer mechanism from the hydraulic gradient. Moreover, the inclusion of superplasticizers in different moisture states could manifest better aggregate rearrangement and compactability. Further, it could improve the tensile behavior of the RCCP compared with the concrete containing NA. These findings favor the complete replacement of NA by RCA for low-volume rural road construction.

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Section: Resultssupporting

confidence: 85%

Enhancing the Performance of Roller-Compacted Concrete Pavement by Synergetic Improvement of Packing Density, Lubrication, and Moisture State of Recycled Concrete Aggregate

Selvam

Singh

Anjana

2023

Transportation Research Record: Journal of the Transportation R

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“…Traditionally, RCC pavements have been built with an 8- to 12-in. slab thickness and used for pavements carrying heavy loads, such as warehouses, truck terminals, distribution centers, and other industrial pavements ( 2 , 3 ). A recently completed accelerated pavement testing study ( 4 ) showed that a relatively thin RCC pavement built over a soil-cement base can achieve outstanding load carrying capacity with excellent field performance and construction cost savings for low-volume roadways where heavy and overloaded trucks are abundant.…”

mentioning

confidence: 99%

Development of a Fatigue Damage Model for Roller Compacted Concrete Pavement Based on In Situ Saw-Cut Beams and Accelerated Pavement Performance

Mahdi

Sobhani

et al. 2022

Transportation Research Record: Journal of the Transportation R

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As a durable, economical, and low-maintenance concrete material, roller compacted concrete (RCC) is steadily becoming the preferred choice for many pavement applications. However, the fatigue models in current pavement thickness design procedures have generally been found to over-predict the RCC pavement fatigue damage under in situ heavy truck loading. In this study, a comprehensive beam fatigue test experiment was performed using field saw-cut RCC slab samples from two full-scale accelerated pavement testing (APT) sections to investigate the fatigue behavior of in situ RCC pavements. This is the first research study to investigate the fatigue behavior of field RCC beam samples prepared and constructed with a high-density asphalt-type paver and a vibratory roller. The results indicate that a well-compacted RCC pavement can achieve higher flexural strength and exhibit better fatigue life than conventional concrete pavement. Based on the beam fatigue test results and in situ fatigue performance of APT test sections, an RCC fatigue-life model was developed, providing a more accurate solution for estimating the allowable number of load repetitions of RCC pavements subjected to vehicular fatigue loading. This model could be used in RCC thickness design procedures to determine the optimum RCC design thickness and long-term fatigue performance of RCC pavements for roadway application.

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Assessing the effect of different compaction mechanisms on the internal structure of roller compacted concrete

Selvam

NSSP

Kannan

et al. 2023

Construction and Building Materials

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Superpave Gyratory Compactor as an Alternative Design Method for Roller Compacted Concrete in the Laboratory

Cited by 13 publications

References 16 publications

Enhancing the Performance of Roller-Compacted Concrete Pavement by Synergetic Improvement of Packing Density, Lubrication, and Moisture State of Recycled Concrete Aggregate

Enhancing the Performance of Roller-Compacted Concrete Pavement by Synergetic Improvement of Packing Density, Lubrication, and Moisture State of Recycled Concrete Aggregate

Development of a Fatigue Damage Model for Roller Compacted Concrete Pavement Based on In Situ Saw-Cut Beams and Accelerated Pavement Performance

Assessing the effect of different compaction mechanisms on the internal structure of roller compacted concrete

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