Journal Published Online: 04 February 2022
Volume 50, Issue 6

Research on Impact Factors of Workability of Roller Compacted Concrete Based on Modified Vebe Test

CODEN: JTEVAB

Abstract

To obtain the optimum workability of roller compacted concrete (RCC), it is necessary to fully consider the degree of influence of each component of RCC. In this research, the influence of water-cement ratio, the content of cement slurry, the content of mortar, the sand ratio, the particle size of maximum aggregate, and the content of mineral powder on the workability of RCC was studied by modified Vebe test. The results showed that the Vebe consistency decreased with the increase of water-cement ratio. The recommended range of cement slurry surplus parameter was 1.1∼1.4; the recommended range of cement mortar surplus parameter was 1.2∼1.6; mixing the fly ash and silica fume into RCC is beneficial to its workability, but the content of fly ash could not exceed 20 %, and the optimum value of the content of silica fume was between 5 and 7.5 %; and the sand ratio has a significant effect on RCC, and there is an optimal sand ratio just like ordinary concrete, which is 34 % in this study.

Author Information

Zhong, Yixiong
School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha, Hunan, China
Yao, Jialiang
School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha, Hunan, China Key Laboratory of Road Structure and Material of Ministry of Transport (Changsha), Hunan, China
Lin, Jun
Highway Engineering Inspection Centre of Jiangxi Province, Nanchang City, Jiangxi Province, China
Yao, Ding
School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha, Hunan, China
Pages: 13
Price: $25.00
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Details
Stock #: JTE20210641
ISSN: 0090-3973
DOI: 10.1520/JTE20210641