Re-usable net-zero carbon structures

在世界各地，建筑设计师一直在探索如何提供高效的“净零”建筑，同时降低能源需求。其中一个主要原因是，全球约40%的人为碳排放来自建筑物的建造和运营。虽然在减少建筑物的运行能源方面取得了重大进展，但建筑过程中的能源使用仍然很高。混凝土和钢材节能的最大机会之一在于建筑结构的体积和能源密集型生产。因为尽管制造方法在建筑方面取得了进步，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。我们提出了一种预制的场外替代方案：一种由回收钢材和无水泥混凝土制成的可重复使用的净零碳结构。针对商业办公室和基础设施应用，这些组件将在场外制造，作为子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：* 结构框架的重量减少10%* 结构钢含量减少15-20%* 现场工作量减少40%* 钢框架安装和后续行业的劳动力资源减少60%* 减少隐含能源（因此减少80%的碳）* 地板中的水泥含量减少100%通过应用数字工程和传感器技术，该项目将询问设计和施工要素，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拆除策略，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楼，9 mx 12 m的可拆卸模型组件的完整工厂试验。产出将是节能的、可重复使用的和可扩展的。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，将展示该材料在结构应用中的能力，并为市场提供一条途径-增加信任并促进低能耗混凝土的采用。（和碳）混凝土产品 * 开发可重复使用的产品和80%的非现场施工方法将大大提高钢材的重复使用和返工的便利性，有助于钢铁行业的未来发展。我们将此次比赛视为施工的机会，混凝土和钢铁行业合作开发适合广泛采用的有影响力的低能耗解决方案，同时加速所有三个行业的发展。

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.