Comparison of several laboratory compaction practices applied on roller compacted concrete pavements

2018-09-14
Şengün, Emin
Shabani, Reza
Aleessa Alam, Burhan
Aykutlu, Mehmet Ali
Yaman, İsmail Özgür
Pavements can be considered as one of the most constructed, renewed and repaired structures. This fact implies the need of continuous R&D works to be able to get the highest efficiency of those pavements, which can be only done through a good harmonized conjunct work between the field and the laboratory. In the recent years, Roller Compacted Concrete (RCC) has been increasingly used in pavement applications due to many advantages of this type of concrete, and the similarity to the production equipment of asphalt pavements. This study has two aims. The first one is to develop a proper method to be applied in the laboratory production of RCC specimens, which can simulate the real field compaction conditions by using the suitable equipment and design. The second aim is to provide an optimization for the combination of three RCC parameters: compaction, density and strength. In this study, four different RCC mixtures which consist of two different cement contents (200-400 kg/m 3), and two different maximum aggregate sizes (12-19 mm) with optimum water content were used. Test specimens from each mix design were produced in the laboratory by means of modify proctor, vibrating table, vibrating hammer, superpave gyrator compactor and a walk-behind tandem vibratory roller which can simulate the real field compaction conditions. The dry and saturated density values, the compaction amounts of each mixture and strength tests results were determined. The preliminary results show a clear difference in the test results between the various compaction methods. This difference changes according to the mix ingredients. While the impact is higher in low cement and small aggregate sizes, this effect is reduced in mixtures with high cement and large aggregate sizes. Finally, when compared with walk-behind tandem vibratory roller, vibrating hammer and superpave gyratory compactor showed similar mechanical performance to simulated field condition.
Citation Formats
E. Şengün, R. Shabani, B. Aleessa Alam, M. A. Aykutlu, and İ. Ö. Yaman, “Comparison of several laboratory compaction practices applied on roller compacted concrete pavements,” presented at the 13th International Congress on Advances in Civil Engineering, 2018, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/73784.