Inorganic Polymers for Sustainable Civil Infrastructure

用于可持续民用基础设施的无机聚合物

• 批准号: 0926627
• 负责人: Maria Juenger
• 金额: $ 29.99万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0926627&HistoricalAwards=false
• 关键词: Inorganic; Polymers; Sustainable; Civil; Infrastructure

Inorganic polymers, also called geopolymers, present a unique opportunity to make concrete binders almost entirely from waste-stream materials. However, there are many challenges that must be overcome in order to see implementation of these materials in civil infrastructure. One major stumbling block is that the waste materials used to make inorganic polymers are inherently highly variable, heterogeneous, and difficult to comprehensively characterize. The purpose of this investigation is to clarify the relationship between material composition and performance in inorganic polymer binders in order to facilitate production of inorganic polymer concrete from underutilized waste-stream sources. Selected wastes, primarily those from coal burning, will be fully characterized for phase composition and reactivity using newly refined analysis methods specifically adapted for this purpose. The characteristics for optimum performance in inorganic polymer concrete will be determined, and this knowledge will be used to identify promising waste materials from sources that are currently landfilled. Portland cement concrete is the dominant building material. However, portland cement production accounts for 2% of primary energy consumption and 5% of global CO2 emissions resulting from human activity. The successful replacement of portland cement concrete with inorganic polymer concrete in infrastructure and repair applications could greatly reduce CO2 emissions and energy use. Furthermore, targeting underutilized waste materials for inorganic polymer concrete will reduce landfilling. While the field of civil engineering is increasingly emphasizing sustainable development, classroom emphasis on these concepts is lagging. Research, teaching and outreach efforts performed during the proposed project will begin to address this gap.

无机聚合物，也称为地质聚合物，提供了一个独特的机会，使混凝土粘结剂几乎完全从废物流材料。 然而，为了在民用基础设施中实施这些材料，必须克服许多挑战。 一个主要的障碍是，用于制造无机聚合物的废料本质上是高度可变的，异质的，并且难以全面表征。 本研究的目的是澄清无机聚合物粘合剂的材料组成和性能之间的关系，以促进未充分利用的废物流源的无机聚合物混凝土的生产。选定的废物，主要是那些从燃煤，将充分表征的相组成和反应性，使用新的完善的分析方法，专门适用于这一目的。 将确定无机聚合物混凝土的最佳性能特征，并将利用这些知识从目前填埋的来源中确定有前途的废料。 波特兰水泥混凝土是主要的建筑材料。 然而，波特兰水泥生产占一次能源消耗的2%，占人类活动造成的全球二氧化碳排放量的5%。在基础设施和维修应用中，无机聚合物混凝土成功取代波特兰水泥混凝土，可以大大减少二氧化碳排放和能源使用。 此外，将未充分利用的废料用于无机聚合物混凝土将减少填埋。虽然土木工程领域越来越强调可持续发展，但课堂上对这些概念的强调却滞后了。 拟议项目期间开展的研究、教学和外联工作将开始，以弥补这一差距。