Comparison of laboratory practices for roller compacted concretepavements

2018-06-22
Şengün, Emin
Aykutlu, Mehmet Ali
Shabani, Reza
Aleessa Alam, Burhan
Yaman, İsmail Özgür
Many advantages like time, cost and sustainability provided by the use of Roller Compacted Concrete (RCC) are behind the increase of this use in pavements, dams, airports, industrial storehouse, military fields and other applications day by day. However, even that many countries started to use this technology since the 1970’s, especially Canada and USA, there is no fully efficient laboratory test method that can represent the compaction conditions of the field. This study aims to compare the main compaction methods that are used to prepare RCC specimens in the laboratory. To achieve this purpose, different RCC mixture designs were prepared by changing the three main factors that most affect the RCC concrete matrix through the use of two different cement dosages (200 and 400 kg/m3 ), two maximum aggregate sizes (Dmax 12 mm and 19 mm) and five different water contents (3-4-5-6-7%). Along with this, different compaction techniques (modified proctor, vibrating table, vibrating hammer and superpave gyratory compacter) were applied for each mixture. Then, the effects of RCC mixing parameters on the Vebe time, the density and the compressive strength were investigated. Especially for compressive strength, the use of a vibrating hammer gives higher density and strength values for lower cement content mixtures whereas other compaction methods exhibit lower values for all mixtures when compared to gyratory compactor.
Citation Formats
E. Şengün, M. A. Aykutlu, R. Shabani, B. Aleessa Alam, and İ. Ö. Yaman, “Comparison of laboratory practices for roller compacted concretepavements,” presented at the 13th International Symposium on Concrete Roads (2018), Berlin, Germany, 2018, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/83576.