EAGER: Exploratory Study of Carbon Dioxide Sequestration using Industrial Wastes and the Potential of End Products in Concrete Applications

该奖项旨在检验这样一种假设，即含有大量碱或碱土金属氧化物的废料具有足够的碳酸化潜力，可以永久储存工业过程中产生的至少一部分二氧化碳。工业碱性废物，即水泥窑粉尘（CKD）、流化床煤燃烧产生的高碳飞灰、公路玻璃珠制造产生的细玻璃粉和造纸产生的石灰泥将被研究。还建议研究所得碳化终产物在混凝土应用中的有益利用。这项EAGER研究的具体研究目标是：(i)量化工业碱性废料在其采购条件下固存二氧化碳的效率；（ii）评价碳化终产物在水泥浆中的行为，为其在混凝土中的潜在应用奠定基础。本研究中要评估的废料是在排放大量二氧化碳的工业环境中产生的。如果成功，该项目将为利用特定工业过程排放的二氧化碳对该过程中的废料进行选矿提供途径。其次，本研究将评估选矿（碳化）废物作为混凝土粘结材料的潜在应用。如果碳化产品可以用于混凝土应用，这将有助于使混凝土“更环保”。

This EAGER award is intended to test the hypothesis that waste materials containing significant amounts of alkali or alkaline earth metal oxides have sufficient carbonation potential to permanently store at least a part of the CO2 generated from industrial process. Industrial alkaline waste materials, viz., cement kiln dust (CKD), high carbon fly ash from fluidized bed coal combustion, fine glass powder from highway glass bead manufacturing, and lime mud from paper manufacturing will be investigated. It is also proposed to investigate the beneficial utilization of the resulting carbonated end products in concrete applications. The specific research objectives for this EAGER study are: (i) To quantify the efficiency of industrial alkaline waste materials in their as-procured condition for CO2 sequestration; and (ii) To evaluate the behavior of the carbonated end products in cement pastes so as to lay the foundation for their potential application in concretes.The waste materials to be evaluated in this study are generated in industrial settings that emit significant quantities of CO2. If successful, this project will provide a pathway for the utilization of the CO2 emitted from a particular industrial process towards the beneficiation of the waste material from this process. Two, the beneficiated (carbonated) waste products will be evaluated in this study for their potential application as binding materials in concrete. If the carbonated products can be utilized in concrete applications, this will contribute towards making the concrete ?greener?.