Study on Site Construction Technology of Four-Graded RCC

Yu Qiang Lin; Yan Shi; Ding Ming Guo; Jia Zheng Li; Hua Quan Yang

doi:10.4028/www.scientific.net/AMR.250-253.2927

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 250-253Study on Site Construction Technology of...

Study on Site Construction Technology of Four-Graded RCC

Abstract:

Tests on rolling technology of four-graded RCC were carried out on dam site and then recommended construction parameters of four-graded RCC was proposed, which aimed to provide technique support for application of four-graded RCC in hydropower projects. Results show that when water consumption is 71kg/m³ and VC value is 3s~5s of four-graded RCC, large aggregates are coated with mortar sufficiently and the mixture has good performance of being-rolled and anti-separation. Recommended parameters of four-graded RCC are as follows: 2 times without vibration＋6 times with vibration＋2 times without vibration for 0.4m-thick layer, 2 times without vibration＋8 times with vibration＋2 times without vibration for 0.5m-thick layer, with rolling exciting force 395kN and walking speed 1.0~1.5km/h. Then the relative compaction of four-graded RCC can reach or exceed 98.0%.

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Periodical:

Advanced Materials Research (Volumes 250-253)

Pages:

2927-2930

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.250-253.2927

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Online since:

May 2011

Authors:

Yu Qiang Lin, Yan Shi, Ding Ming Guo, Jia Zheng Li, Hua Quan Yang

Keywords:

Construction Technology, Four-Graded Roller Compacted Concrete (RCC), Relative Compaction, Rolling Times

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