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目前混凝土的使用性能得到更多的关注 ,特别是近年来普遍产生的劣化和失效 ,使人们对高强度、低渗透性混凝土的生产和使用的兴趣日益增加。澳门观光塔主体结构所使用的掺加硅粉的C55高性能混凝土从设计到使用及评价都是从耐久性角度出发的。本文通过澳门观光塔项目的工程实践描述了掺加硅粉高性能混凝土的耐久性机理 ,并从该工程所使用的耐久性评价指标出发 ,揭示了掺加硅粉高性能混凝土的优异性能。
At present, the performance of concrete is receiving more attention. Especially the deterioration and failure that have been commonly caused in recent years have led to an increasing interest in the production and use of high strength and low permeability concrete. The main structure of the Macao Tourist Tower used in the C55 high-performance concrete with silica fume from the design to the use and evaluation are from the durability point of view. In this paper, the durability mechanism of high performance concrete with silica fume is described through the engineering practice of Macao Tower project. Based on the durability evaluation index used in this project, the excellent performance of high performance concrete with silica fume is revealed.