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首页> 外文期刊>Structural concrete >Building lightweight structures with carbon-fiber-reinforced polymer-reinforced ultra-high-performance concrete: Research approach, construction materials, and conceptual design of three building components
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Building lightweight structures with carbon-fiber-reinforced polymer-reinforced ultra-high-performance concrete: Research approach, construction materials, and conceptual design of three building components

机译：用碳纤维增强的聚合物增强的超高性能混凝土建造轻型结构：研究方法，建筑材料和三个建筑构件的概念设计

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The building industry, and especially the concrete industry, consumes a considerable proportion of the natural resources extracted from the lithosphere and is responsible for a large part of the solid waste generated worldwide. Unfortunately, this fact has not yet generated a movement to counter the trend; rather, a huge increase in the use of concrete in new structures can be observed. It is imperative to counteract this development by optimally exploiting the material properties of concrete in order to improve its efficiency. One strategy being pursued at the University of Natural Resources and Life Sciences, Vienna and TU Wien is to reduce the amount of concrete and reinforcement in structures by using high-performance materials such as carbon-fibre-reinforced polymers (CFRP) in ultra-high-performance concrete (UHPC) members. This permits a crucial reduction in the self-weight and allows for the design of very lightweight precast concrete elements. The authors' goal is to use CFRP rods as bending reinforcement and a combination of flat and preformed CFRP textiles as shear and structural reinforcement. In the first part of this paper, the research approach is introduced and a comprehensive overview of the state of the art of UHPC and CFRP reinforcement is given. The second part contains a description of the conceptual design of some structural members (one floor element and two T-beams), starting with the development of a suitable UHPC mixture. Furthermore, preliminary uniaxial tensile tests of textile-reinforced UHPC strips are described and evaluated. In the final part of this paper, the authors present parameter studies for different reinforcement types, values, additional prestressing of the rod reinforcement and the first prototypes. They are used to give an estimation of the feasibility, the load-bearing and deflection behavior of the proposed building components.
机译：建筑行业，尤其​​是混凝土行业，消耗了从岩石圈中提取的自然资源的相当一部分，并导致了全球产生的大部分固体废物。不幸的是，这一事实尚未引起抵抗潮流的动静。相反，可以观察到在新结构中混凝土使用量的巨大增加。必须通过最佳地利用混凝土的材料性能以提高其效率来抵消这种发展。维也纳自然资源与生命科学大学和维也纳工业大学追求的一种策略是通过使用高性能材料（例如超高碳纤维增强聚合物（CFRP））来减少混凝土和结构中的钢筋数量高性能混凝土（UHPC）成员。这样可以大大减少自重，并可以设计出非常轻便的预制混凝土构件。作者的目标是使用CFRP棒作为弯曲增强材料，并使用扁平和预成型CFRP纺织品的组合作为剪切和结构增强材料。在本文的第一部分，介绍了研究方法，并全面概述了UHPC和CFRP加固技术的现状。第二部分包含一些结构构件（一个地板构件和两个T型梁）的概念设计的描述，从开发合适的UHPC混合物开始。此外，还描述并评估了纺织品增强UHPC条的初步单轴拉伸试验。在本文的最后部分，作者介绍了针对不同钢筋类型，值，杆钢筋的附加预应力和第一个原型的参数研究。它们用于估计拟议建筑组件的可行性，承载和挠曲行为。

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