Compaction Characteristics of Roller Compacted Concreteby Morio Kurita, Shimizu Construction Co, Tokyo, Japan,
Yukio Aoyagi, Shimizu Construction Co, Tokyo, Japan,
Takao Endo, Shimizu Construction Co, Tokyo, Japan,
Tadahiko Okumura, Shimizu Construction Co, Tokyo, Japan,
Abstract: This paper describes a fundamental study on the compaction characteristics of Roller Compacted Concrete (RCC) in the fresh state during vibration through a laboratory test and a field experiment. Through the laboratory test carried out to examine the effects of the vibration factors, the required minimum acceleration to consolidate RCC densely was determined. The relationship between the densities of RCC and the vibration factors (frequency, amplitude) is shown, and the time-dependent variation properties of the surface settlement of RCC are explained. Through the field experiment carried out to investigate the vibration properties, the dynamic wave propagation of vibration in the inner part of fresh RCC was found. The settlement properties in the inner part of fresh RCC during vibrating roller compaction are explained.
Subject Headings: Roller-compacted concrete | Vibration | Concrete dams | Laboratory tests | Field tests | Compaction (material) | Surface properties | Dynamic properties
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