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

Haselbach，Liv M.，南卡罗来纳大学PI0725268 SGER：混凝土和二氧化碳封存：多少？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，首次使用后被碾压和回收的混凝土吸收二氧化碳的程度和动力学尚未得到详细研究。这一探索性项目将通过对不同学科的现有平衡和动力学研究进行数据挖掘，为混凝土封存二氧化碳开发一个概念模型。将对数据进行分析，以估计最大碳化潜力并优化封存。这些结果将被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封存潜力。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以及混凝土在未来建筑中的使用。参与的研究生和本科生将从接触广泛的学科和发展概念模型中受益。

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.