Long-Term Ductility of Glass Fiber Reinforced Concrete Panels

由玻璃纤维增强混凝土制成的建筑面板越来越多地用于正在翻新的建筑物和新建建筑物的外部包层。现场经验表明，随着时间的推移，这些面板的抗拉强度降低，延展性丧失。强度的降低可以在面板的初始设计中考虑到，但延性方面还不够清楚，无法包括在设计计算中。该项目将确定玻璃纤维板的长期性能，以便在设计的初始阶段适当地考虑它。几个参数将被研究，如：纤维的类型，聚合物乳胶和火山灰的添加和固化条件。

Building panels made of glass fiber reinforced concrete are increasingly used as exterior cladding for buildings which are being renovated and also for new construction. Field experience has indicated that these panels have exhibited reduced tensile strength and a loss of ductility with time. The reduced strength may be accounted for in the initial design of the panels, but the ductility aspects are not known sufficiently to be included in the design calculations. This project will determine the long-term behavior of the glass fiber panels to account for it properly in the initial stages of design. Several parameters will be investigated such as: types of fiber, additions of polymer latex and pozzolans and curing conditions.