Application of underwater Self-Compacting Concrete

• Main Authors: Chen, Guan-Yu, 陳冠宇
• Other Authors: Jau, Wen-Chen
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/38965188892658482783

碩士 === 國立交通大學 === 土木工程學系 === 98 === Currently carried out in the water engineering structures, mainly in a continuous wall, the main deep foundation pile, still use traditional concrete or concrete with high fluidity, its not easy to control the placement of quality. After years of research and development, has successfully developed self-compacting concrete for underwater construction and contacted with water will not spread. Self-compacting concrete (SCC) is a concrete which can fill into every corner of the form by its own weight without vibration . Effectively improve the poor quality of concrete construction defects This research develops this underwater SCC which will not segregate in water and have excellent workability and is anti-washout in water. The indices for the performance include pH values, turbidity value, anti-washout ability, and workability. In order to simulate the actual construction in the water, using tremie to pour concrete mold. In the air and water environment, compare two environmental impact on the concrete. Underwater self-compacting concrete applied to domestic engineering in this study, including compressive strength, workability, the water is not tested for in vitro analysis, non-destructive testing. In order to fill the case of internal piles, the steel cage around the transparent tube device 8, to facilitate observation of the camera into the pile of concrete placement of the internal process and the situation after hardened concrete. Keywords: underwater self-compacting concrete, antiwashout,tremie