CAREER: Development of Novel High-Performance Carbon Sink Concrete Materials Using Sustainable Multifunctional Hybrid Additives

职业：使用可持续多功能混合添加剂开发新型高性能碳汇混凝土材料

• 批准号: 2335878
• 负责人: Mehdi Khanzadeh Moradllo
• 金额: $ 57.94万
• 依托单位: Temple University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-04-01 至 2029-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2335878&HistoricalAwards=false
• 关键词: CAREER; Development; Novel; Performance; Carbon

This Faculty Early Career Development Program (CAREER) award supports research to develop novel multi-functional hybrid materials and internal carbon dioxide (CO2) curing processes for carbon-sink concrete materials to address the fundamental limitations of carbonated concrete systems. Achieving and sustaining net-zero emissions requires advanced materials and methods for long-term sequestration of anthropogenic CO2. The production of concrete materials through binder carbonation has the potential to consume approximately one billion tons of CO2 annually. The application of carbonated concrete materials can also largely reduce CO2 emissions from the production of ordinary portland cement. Despite the major technological developments related to carbonated concrete materials in recent decades, the expanded use of these eco-friendly materials in structural and non-structural applications depends on addressing the chemical, physical, and processing related barriers. This research will focus on micro-engineering the carbonation process using sustainable performance-enhancing additives that will be exploited to design a range of microstructures for the carbonated concrete materials. It will attempt to design next-generation high-performance carbon-sink concrete with superior mechanical and durability properties to satisfy or surpass performance requirements for building and infrastructure applications in different geographic regions. The educational objectives of this work will complement the research goals by advancing knowledge on climate change and the importance of sustainable construction practices in Philadelphia high schools and colleges, as well as in the professional community by developing Sustainable Infrastructure Workshops, Multidisciplinary Undergraduate Team Competitions, and Sustainable Concrete Seminars. The education plan aims to enhance the diversity of the STEM workforce through strategic targeting and recruiting of underrepresented students. The overarching goal of this research is to micro-engineer the carbonation process using hybrid polymers that can perform multiple functions: (i) serve as internal CO2 sources to extend the process; (ii) regulate local pH to sustain the precipitation of carbonates; and (iii) serve as carbonate nucleation/growth sites to alter the kinetics and products of the process. The multi-functional hybrid polymers will be exploited to design a range of microstructures to link microstructure characteristics to the physical properties of carbonated materials. These fundamental relationships will be employed to predict the long-term performance of carbonated concrete materials in different environments and under various loading conditions. This research will attempt to advance the specific state-of-the-art in carbonated concrete materials and more broadly carbon capture technologies from several major scientific and technological perspectives such as: 1) uncovering the functioning mechanism of hybrid polymers using coupled in-situ synchrotron techniques, 2) developing novel advanced analytical techniques for studying carbonation reaction and microstructure evolution in carbonated concrete systems across length scales, and 3) developing efficient sustainable additives to engineer carbonated concrete materials from the bottom-up. This research will advance the knowledge base in materials science, binder chemistry, porous media mechanics, and advanced analytical and imaging techniques.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.

该学院早期职业发展计划 (CAREER) 奖项支持研究开发新型多功能混合材料和碳汇混凝土材料的内部二氧化碳 (CO2) 固化工艺，以解决碳化混凝土系统的基本局限性。实现和维持净零排放需要先进的材料和方法来长期封存人为二氧化碳。通过粘结剂碳化生产混凝土材料每年可能消耗约 10 亿吨二氧化碳。碳化混凝土材料的应用还可以很大程度上减少普通硅酸盐水泥生产过程中的二氧化碳排放。尽管近几十年来与碳化混凝土材料相关的技术取得了重大发展，但这些环保材料在结构和非结构应用中的扩大使用取决于解决化学、物理和加工相关的障碍。这项研究将重点关注使用可持续的性能增强添加剂对碳化过程进行微观工程，这些添加剂将用于设计碳化混凝土材料的一系列微观结构。它将尝试设计具有卓越机械和耐久性能的下一代高性能碳汇混凝土，以满足或超越不同地理区域的建筑和基础设施应用的性能要求。这项工作的教育目标将通过推进费城高中和大学以及专业界的气候变化知识和可持续建筑实践的重要性来补充研究目标，方法是举办可持续基础设施研讨会、多学科本科团队竞赛和可持续混凝土研讨会。该教育计划旨在通过战略定位和招募代表性不足的学生来增强 STEM 劳动力的多样性。这项研究的总体目标是使用具有多种功能的混合聚合物对碳酸化过程进行微工程设计：(i) 作为内部二氧化碳源来扩展该过程； (ii) 调节局部 pH 值以维持碳酸盐的沉淀； (iii) 作为碳酸盐成核/生长位点来改变该过程的动力学和产物。多功能杂化聚合物将用于设计一系列微观结构，将微观结构特征与碳酸材料的物理性能联系起来。这些基本关系将用于预测碳化混凝土材料在不同环境和各种载荷条件下的长期性能。本研究将尝试从几个主要科学和技术角度推进碳化混凝土材料和更广泛的碳捕获技术的特定最新技术，例如：1）利用耦合原位同步加速器揭示杂化聚合物的功能机制技术，2）开发新颖的先进分析技术，用于研究碳化反应和碳化混凝土系统在长度尺度上的微观结构演变，以及3）开发高效的可持续添加剂，以自下而上地设计碳化混凝土材料。这项研究将推进材料科学、粘合剂化学、多孔介质力学以及先进分析和成像技术方面的知识基础。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。