Re-usable net-zero carbon structures

在世界各地，建筑设计师一直在探索如何在减少能源需求的情况下提供高效的“净零”建筑。这样做的一个关键动机是，大约40%的人为全球碳排放来自建筑的建设和运营。虽然在降低建筑物运行能耗方面取得了重大进展，但建筑过程中的能源使用量仍然很高。混凝土和钢铁节能的最大机会之一在于建筑结构的产量和能源密集型生产。因为尽管人造建筑方法取得了进步，但绝大多数建筑仍然是通过传统的钢框架建筑方法交付的。我们提出了一种非现场预制的替代方案：一种可重复使用的、净零碳结构，由回收钢和无水泥混凝土制成。针对商业办公室和基础设施应用，这些组件将在异地制造，作为组件交付到项目现场，并作为单一操作进行安装。与传统建筑相比，这将减少：*结构框架重量减少10%*结构钢材含量减少15%-20%*交付到现场的数量减少40%*钢框架安装和后续行业的人力资源减少60%*体现能量减少(因此减少80%)*地板中的水泥含量减少100%通过数字工程和传感器技术的应用，该项目将询问设计和施工元素，以优化产品的设计寿命，并为建筑创建一个生命周期结束的解构策略，使其可重复使用。主要目标包括易于制造、易于现场组装、降低复杂性、提高安全性、物流和长期性能。我们将提供一个两层，9mx12m可拆卸的模型组件的完整工厂试验。输出将是节能、可重复使用和可扩展的。该解决方案支持水泥和钢铁行业提高能效和竞争力：*在结构模块中对无熟料混凝土进行全尺寸模型和性能测试，将展示这种材料在结构应用中的能力，并提供一条增加市场信任的途径，并催化低能源(和碳)混凝土产品的吸收*可重复使用产品的开发和80%的异地施工方法将显著提高钢铁的重复使用和返工的便利性，帮助钢铁行业抵御未来。我们将这一竞争视为建筑的一个机会，混凝土和钢铁行业合作开发适合广泛采用的有效的低能源解决方案，同时促进这三个行业的发展。

Around the world, construction designers have been exploring ways to deliver highly efficient "net zero" buildings with a reduced energy demand. A key motivation for this is because around 40% of man-made global carbon emissions come from the construction and operation of buildings. Although significant advances in reducing building's operational energy have been made, the energy use within the construction process remains high. One of the biggest opportunities for concrete and steel energy-efficiency lies in the volume and energy-intensive production of a building's structure. Because despite advances in manufactured approaches to construction, the vast majority of buildings are still delivered through a traditional approach to steel-framed construction. We propose a prefabricated offsite alternative: a reusable, net-zero carbon structure made from recycled steel and cement-free concrete. Targeting commercial offices and infrastructure applications, the components will be manufactured offsite and delivered to the project site as sub-assemblies and installed as a single operation. Compared with conventional construction this will reduce:* Weight of the structural frame by 10%* Structural steel content by 15-20%* Deliveries to site by 40%* Labour resources for steel frame erection and following trades by 60%* Reduced embodied energy (and therefore carbon reduction of 80%)* Cement content in floors by 100%Through the application of digital engineering and sensor technology, the project will interrogate design and construction elements to optimise the design-life of the product, and create an end-of-life deconstruction strategy for the building, making it reusable. Key aims include ease of manufacture, ease of assembly on site, reduction in complexity, improved safety, logistics and long-term performance. We will deliver a full factory trial of a two-storey, 9mx12m demountable mock-up assembly. The output will be energy efficient, reusable and scalable. The solution supports both the cement and steel industry to be more energy efficient and competitive:* The full-scale mock-up and performance testing of a clinker-free concrete in a structural module will demonstrate the material's capabilities in structural applications and offer a route to market - increasing trust and catalysing the uptake of low-energy (and carbon) concrete products* The development of a reusable product and an 80% offsite construction methodology will significantly increase the ease of reuse and rework of steel, helping future-proof the steel industry.We viewed this competition as an opportunity for the construction, concrete and steel industries to work collaboratively to develop an impactful low-energy solution suited to widespread adoption, accelerating all three industries simultaneously.