Research Of Free-Vibration Self-Compacting High Performance Concrete

Free-vibration and self-densifying concrete, also definited as self-compacting concrete, is a kind of concrete with good performance of fluidity, adherence and anti-segregation. It is high performance concrete of low water-binder ratio. With its own gravity and without any vibration, it can fill up the space automatically. With high adding quantity of fly ash and slag ,high quality water reducing agent and other compound admixture is the most important technology of this kind of high performance concrete.SCC focus on high workability at the same time on high strength and high durability through choosing the composite of aggregate, additives, content of cementions material, admixture reasonably and the optimum design of mix proportion. SCC have the following advantages:remarkably reducing the noisy pollution and the worker's laber intensity in construction; deducing the rough surface because of over-vibration or missing-vibration in the conventional construction and resoving the quality problems of hole resulting from the coarse aggregate blocking in the section of complex shapes and densely-packed reinforcement,so it can accelerate construction progress of a buiding,shorten the construction period,secure concrete quality and improve the building's durability ; using largely industrial solid waste such as fly ash and blast furnace slag.The development and application of SCC is useful for using the comprehensive utilization of resourse and the protection of the entironmentcan and effects remarkable social and economic efficiency,so this concrete is called"green concrete".The research and practical application of the free-vibration and...