SGER: Concrete and CO2 Sequestering: How Much? How Fast?

哈塞尔巴赫，丽芙M.，PI南卡罗来纳大学0725268SGER：混凝土和二氧化碳封存：多少钱？有多快？波特兰水泥基混凝土的生产被认为是二氧化碳的最大贡献者之一，二氧化碳是温室气体排放的主要组成部分。 通过对混凝土可持续性的生命周期评估，混凝土碳化已被评估为潜在的重要二氧化碳汇。 然而，尚未详细研究混凝土在初次使用后破碎和回收的二氧化碳吸收程度和动力学。 这一探索性项目将通过对来自不同学科的现有平衡和动力学研究进行数据挖掘，开发一个混凝土固存二氧化碳的概念模型。 将对数据进行分析，以估计最大碳酸化潜力并优化封存。 研究结果将纳入生命周期评估模型和实验方法，以评估混凝土再利用和再循环的固碳潜力。 了解解构材料在温室气体封存中的作用将影响混凝土的回收利用以及未来建筑中混凝土的使用。 参与的研究生和本科生将受益于接触到广泛的学科和概念模型的发展。

Haselbach, Liv M., PIUniversity of South Carolina0725268SGER: Concrete and CO2 Sequestering: How Much? How Fast?The production of Portland cement-based concrete is considered one of the largest contributors to carbon dioxide, which is a major component of greenhouse gas emissions. Through life cycle assessment of the sustainability of concrete, concrete carbonation has been evaluated as a potentially important sink for carbon dioxide. However, the extent and kinetics of the up take of carbon dioxide by concrete that is crushed and recycled after its primary use have not been examined in detail. This exploratory project will develop a conceptual model for the sequestration of carbon dioxide by concrete through data mining of existing equilibrium and kinetic studies from diverse disciplines. The data will be analyzed to estimate maximum carbonation potentials and optimize sequestration. The results will be incorporated in life cycle assessment models and experimental approaches to evaluate the sequestration potential of reuse and recycle of concrete. Understanding the role of deconstructed materials in greenhouse gas sequestration will influence the recycling of concrete as well as use of concrete in future construction. The participating graduate and undergraduate students will benefit from exposure to a broad range of disciplines and development of conceptual models.