EFRI ELiS: Mechanically Adaptive Living Structural Materials

EFRI ELiS：机械自适应生命结构材料

• 批准号: 2223785
• 负责人: Christopher Hernandez
• 金额: $ 200万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2223785&HistoricalAwards=false
• 关键词: EFRI; ELiS; Mechanically; Adaptive; Living

The manufacturing and application of materials used in construction and building materials is energy intensive, generating substantial costs in dollars and carbon emissions. At the same time, building operations themselves are energy intensive, especially when it comes to heating and cooling. In the coming decades, there will be a need for new, more sustainable, and higher-performing building materials. The long-term goal of this project is to establish the technology for building materials that are less energy intensive during manufacturing and also reduce the costs of heating/cooling over the lifetime of the completed building. The specific goal of this project is to enhance the performance of sustainable materials used for insulation by increasing the ability of the material to contribute to the structural demand. In addition to technical achievements, the proposed work includes consideration of the legal challenges associated with the incorporation of such materials into building codes. Additionally, this project establishes a graduate level course for the emerging field of “Engineered Living Materials” that will include cross-campus instruction among the participating universities. Insights from the proposed work will be integrated into educational programs for middle school and high school students from underrepresented groups at each of the participating universities. The proposed research advances technology related to sustainable living building materials by creating materials that adapt to mechanical stresses during use by increasing density and stiffness at regions of greatest mechanical demand. The project focuses on the development of mechanically induced biomineralization in hempcrete, a sustainable building material with negative carbon emissions. The proposed work will advance knowledge in the field of living building materials by establishing the fluid environment necessary for nutrient delivery to resident microbes and the changes in chemical environment associated with ureolytic biomineralization within confined spaces of the living building material. A transformative aspect of the proposed work is the use of mechanically sensitive bacteria that alter the density and stiffness of the building material only at locations of greatest mechanical stress, increasing density and mechanical properties at needed locations while maintaining less dense regions with better insulative capacity This project includes 1) multiscale modeling to determine the transport of nutrients and waste products generated during biomineralization within microscale pores within a living building material, 2) fabrication of test beds of mechanically sensitive organisms using an existing sustainable building material that can benefit from enhanced mechanical performance (hempcrete), and 3) analysis of the legal implications of living building materials, which, unlike other building materials, are purposely designed to change their mechanical performance.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在建筑和建筑材料中使用的材料的制造和应用是能源密集型的，以美元和碳排放量产生巨额成本。同时，建筑行动本身就是能源密集型的，尤其是在热和冷却方面。在未来几十年中，将需要新的，更可持续和表现更高的建筑材料。该项目的长期目标是为制造过程中能源较少的建筑材料建立技术，并降低完整建筑物一生中供暖/冷却的成本。该项目的具体目标是通过提高材料有助于结构需求的能力来增强用于绝缘的可持续材料的性能。除技术成就外，拟议的工作还包括考虑与此类材料基础设施相关的法律挑战。此外，该项目还为“工程生活材料”的新兴领域建立了研究生级课程，其中将包括参与大学之间的跨校园教学。拟议工作的见解将融入到每所参与大学的中学和代表性不足小组的高中学生的教育计划中。拟议的研究通过创建适应最大机械需求区域的密度和刚度在使用过程中适应机械应力的材料来推动与可持续生活建筑材料相关的技术。该项目的重点是在Hepcrete（一种具有负碳排放的可持续建筑材料）中机械诱导的生物矿化的发展。拟议的工作将通过建立向居民提供营养所需的流动环境来提高知识的知识，以及在限制性的工作中，与尿路溶解生物矿化相关的化学环境变化是拟议工作的变革性方面的使用是使用机械敏感的细菌的使用，而在较大的位置，在较大的位置，在高度上既有机械质量的属性，又会构成高度的属性，并具有高度的高度属性。该项目包括1）多尺度建模，以确定生物矿化过程中在生物矿化过程中生成的养分和废物的运输​​，以制造活物质材料中的机械敏感有机体的测试床，使用现有的可持续性建筑材料，可以利用能够从改善机械材料（hempcrete）的机械材料（HEMPCRETE）和其他建筑物构造的材料来分析的机械性能，这些材料的作用，以及其他建筑物的作用。绩效。该奖项反映了NSF的法定使命，并被认为是值得通过基金会的知识分子优点和更广泛影响的审查标准来评估值得支持的。

项目成果

Make engineered living materials carry their weight

• DOI: 10.1016/j.matt.2023.07.023
• 发表时间: 2023-11-01
• 期刊: MATTER
• 影响因子: 18.9
• 作者: Heveran，Chelsea M.;Hernandez，Christopher J.
• 通讯作者: Hernandez，Christopher J.