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混凝土作为一种由砂、石、水泥、水、外加剂等多物质混合,经过较为复杂的水化反应并在一定温度、湿度、龄期下养护形成的固态物质。在工程中其各种性能都会对工程设计、施工有所影响。其中混凝土徐变作为一种固有性质在工程项目如桥梁工程、公路工程、工民建工程中都有着重要的工程意义与影响。本文分析论述混凝土徐变效应、影响因素及对较为常用的CEB-FIP(1990)徐变预测模型进行分析。
Concrete is a kind of solid material that is mixed by sand, stone, cement, water, admixtures and other substances, and undergoes more complex hydration reaction and curing under certain temperature, humidity and age. In engineering, its various properties will affect the engineering design and construction. Concrete creep as an inherent property has important engineering significance and influence in engineering projects such as bridge engineering, highway engineering, and civil engineering construction. This article analyzes and discusses concrete creep effects, influencing factors, and analysis of the more commonly used CEB-FIP (1990) creep prediction model.