CAREER: Mechanical Modeling of Living Building Materials for Structural Applications

职业：用于结构应用的活体建筑材料的机械建模

• 批准号: 2144575
• 负责人: Mija Hubler
• 金额: $ 54.83万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-01 至 2027-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2144575&HistoricalAwards=false
• 关键词: CAREER; Mechanical; Modeling; Living; Building

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2). This Faculty Early Career Development (CAREER) award will establish a framework to describe the mechanical behavior of a living building material. This framework will represent a critical step to bring living materials into structural applications since it will identify the engineering parameters needed for structural design. This new knowledge will be applied in the demonstration of a living concrete alternative. Introduction of living building materials in structural applications will address the environmental and durability challenges of current concrete building and infrastructure construction. The project will be complemented by establishing programs to promote broad student participation in mechanics research for structural applications. These educational and outreach activities will be designed to increase diversity in the science and engineering pipeline to help meet growing workforce demand and support cross-disciplinary innovation for infrastructure materials.This project will provide a new multiscale cellular and granular material poroelastic formulation for a microbial precipitation-based living building material. Research activities toward this goal include: i) experimental study and modeling of dehydrated gel-wall material; ii) experimental study of the composite material properties; iii) formulation of a poromechanics model for the cellular gel-wall material; iv) formulation of a multiscale poromechanics model of the grain and cellular gel-wall material; and v) validation and demonstration. The research outcome will be a material model that can be used to optimize the composition of living building material for structural performance needs and predict the strength of the material under specified loading scenarios. This project will advance the knowledge base in mechanics of building materials and will help to establish the Principal Investigator's long-term career in engineering microstructures to enable discovery of new structural materials.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.

该奖项的全部或部分资金来自《2021年美国救援计划法案》(公法117-2)。这个学院早期职业发展奖将建立一个框架来描述活的建筑材料的力学行为。这一框架将是将活材料应用于结构应用的关键一步，因为它将确定结构设计所需的工程参数。这一新知识将被应用于演示一种活的具体替代方案。在结构应用中引入活的建筑材料将解决当前混凝土建筑和基础设施建设的环境和耐久性挑战。该项目将通过建立促进学生广泛参与结构应用的力学研究的项目来补充。这些教育和推广活动将旨在增加科学和工程流水线的多样性，以帮助满足不断增长的劳动力需求，并支持基础设施材料的跨学科创新。该项目将为基于微生物沉淀的生活建筑材料提供一种新的多尺度多孔和颗粒状材料多孔弹性配方。为实现这一目标开展的研究活动包括：i)脱水凝胶壁材料的实验研究和建模；ii)复合材料性能的实验研究；iii)建立多孔凝胶壁材料的孔力学模型；iv)建立颗粒和多孔凝胶壁材料的多尺度孔力学模型；以及v)验证和演示。研究成果将是一种材料模型，可用于优化生活建筑材料的组成，以满足结构性能需求，并预测特定加载情景下材料的强度。该项目将推进建筑材料力学方面的知识基础，并将有助于建立首席研究人员在工程微结构方面的长期职业生涯，从而能够发现新的结构材料。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。