SBIR Phase I: Sustainable Engineering of Lightweight Aggregate for Concrete Use from Waste Coal Combustion Ash

SBIR 第一阶段：利用废煤燃烧灰制备混凝土用轻骨料的可持续工程

• 批准号: 2126564
• 负责人: Mohammad Balapour
• 金额: $ 25.58万
• 依托单位: SUSMAX LLC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-08-15 至 2023-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2126564&HistoricalAwards=false
• 关键词: SBIR; Phase; Sustainable; Engineering; Lightweight

The broader impact of this SBIR Phase I project is two-folds: (1) increasing the accessibility of construction lightweight aggregate (LWA) for the concrete industry and (2) conversion of waste coal combustion ash (W-CCA) to value-added products (i.e., construction LWA). Yearly, about 100 million tons of coal combustion ash is produced in the US, of which only about 60% is recycled and the rest is moved to the landfills. This imposes risks to human health and the environment. Meanwhile, accessibility of construction LWA that is traditionally produced from clay, slate, and shale is challenging for the concrete industry in some states due to the absence of local construction LWA manufacturers. Therefore, LWA must be imported from elsewhere in the country, increasing (i) the final cost for the material and (ii) greenhouse gas emission due to transportation. With an abundance of W-CCA landfills scattered throughout the US, LWA can be produced from this material near the landfill sites to increase the local accessibility of construction LWA for the concrete industry. By implementing this technology, the environmental impact of W-CCA will be reduced, natural resource consumption will be prevented, CO2 emission associated with material transportation will be reduced, and users can save money by having access to local construction LWA.This Small Business Innovation Research (SBIR) Phase I project addresses hurdles associated with manufacturing a novel porous lightweight aggregate (LWA) produced from waste coal combustion ash (W-CCA). The melting properties of W-CCA enable the production of construction LWA with superior engineering properties, including increased water absorption/desorption capacity and concrete workability relative to traditional LWA. The deliverables of this project include: (i) development of a LWA with desired sintering properties during pilot-scale production to assure technical feasibility of scaling-up the proposed technology, (ii) optimization of pilot-scale rotary kiln parameters translatable to large-scale production, (iii) demonstration of the superior engineering properties of LWA for concrete applications produced at lab pilot-scale, and (iv) demonstration of the non-leachability of W-CCA based LWA in encapsulated concrete applications.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SBIR I期项目的更广泛影响是两倍：（1）增加施工轻量级总（LWA）对混凝土行业的可及性，以及（2）（2）将废料燃料燃烧灰（W-CCA）转换为增值产品（即建筑LWA）。在美国，每年生产约1亿吨煤炭燃料，其中只有大约60％的回收利用，其余的则移至垃圾填埋场。这给人类健康和环境带来了风险。同时，由于缺乏本地建筑LWA制造商，在某些州，从粘土，石板和页岩中产生的建筑LWA的可及性对于混凝土行业而言是具有挑战性的。因此，LWA必须从该国其他地方进口，增加（i）材料的最终成本和（ii）由于运输而导致的温室气体排放。随着大量的W-CCA垃圾填埋场散布在整个美国，可以从垃圾填埋场附近的该材料生产LWA，以增加混凝土行业的施工LWA的本地可及性。 By implementing this technology, the environmental impact of W-CCA will be reduced, natural resource consumption will be prevented, CO2 emission associated with material transportation will be reduced, and users can save money by having access to local construction LWA.This Small Business Innovation Research (SBIR) Phase I project addresses hurdles associated with manufacturing a novel porous lightweight aggregate (LWA) produced from waste coal combustion ash (W-CCA). W-CCA的熔化特性使LWA具有出色的工程特性，包括相对于传统LWA的吸水能力/解吸能力增加和具体的可行性。 The deliverables of this project include: (i) development of a LWA with desired sintering properties during pilot-scale production to assure technical feasibility of scaling-up the proposed technology, (ii) optimization of pilot-scale rotary kiln parameters translatable to large-scale production, (iii) demonstration of the superior engineering properties of LWA for concrete applications produced at lab pilot-scale, and (iv) demonstration of the基于W-CCA的LWA在封装的具体应用中的不可渗透性。该奖项反映了NSF的法定任务，并且使用基金会的知识分子优点和更广泛的影响评估标准，被认为值得通过评估来获得支持。