Development of Environmentally Sustainable Masonry Grout Materials

环境可持续砌体灌浆材料的开发

• 批准号: 574404-2022
• 负责人: Das, SreekantaS
• 金额: $ 2.19万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=748906
• 关键词: Development; Environmentally; Sustainable; Masonry; Grout

Masonry buildings and masonry constructions can be traced back centuries ago. Loadbearing structural elements of masonry use concrete masonry blocks which are then filled with masonry grout materials which contain a large amount of Portland cement (PC) and natural sand (NS). PC is not an environmentally friendly material since the production of PC is responsible for about 8% of the total CO2 and other greenhouse gases (GHG). Hence, the primary goal of this research is to develop environmentally friendly masonry grout materials that will use limited or no PC. Industrial waste (slag), construction wastes (ground recycled concrete masonry), and clay soil will be used to replace PC. Use of NS in masonry grout materials and in traditional concrete materials has resulted in the depletion of stone reserves. Stones are crushed to produce NS and then they are hauled long-distances to construction sites. This long-distance hauling for the NS results in more emissions of GHG into the environment. Hence, this research will also investigate the use of locally available construction and demolition wastes as the substitute for NS for use in masonry grouts. These wastes are generated by concrete block manufacturers and demolition of old concrete structures which end up in the landfills causing environmental and health hazards to people living nearby. Thus, this research will also help in alleviating the landfill problem and minimizing the health and safety hazards. The newly developed environmentally sustainable grout materials will be then tested to evaluate their ability to perform the structural functions required of masonry grouts. A large number of masonry prism specimens and several tall masonry wall specimens will be built and tested in the structural testing lab at the University of Windsor. Additionally, computer simulations will be undertaken to determine various critical information needed for the assessment of the grout materials in loadbearing applications. This research will be completed in five years and seven engineering students will execute the work under the supervision of Dr. S. Das and Dr. B. Banting. These highly trained and skilled students will be able to bridge the skills gap in Canada.

可以追溯到几个世纪前的砖石建筑和砌体建筑。砌体的负载结构元素使用混凝土砌体块，然后充满了砌体灌浆材料，其中包含大量波特兰水泥（PC）和天然砂（NS）。 PC不是一种环保的材料，因为PC的生产约为总CO2和其他温室气体（GHG）的8％。因此，这项研究的主要目标是开发将使用有限或没有PC的环保砌体灌浆材料。工业废物（炉渣），建筑废物（地面再生混凝土砌体）和粘土土壤将用于替代PC。在砌体灌浆材料和传统混凝土材料中使用NS导致石材储备的耗竭。石头被压碎以产生NS，然后将它们拖到建筑地点的长途距离。 NS的长距离拖曳导致GHG的更多排放到环境中。因此，这项研究还将调查当地可用的建筑和拆除废物作为NS用于砖石灌浆中的替代品。这些废物是由混凝土块制造商产生的，并拆除了旧混凝土结构，这些结构最终在垃圾填埋场中造成了环境和健康危害附近的人。因此，这项研究还将有助于减轻垃圾填埋场问题并最大程度地减少健康和安全危害。然后将测试新开发的环境可持续的灌浆材料，以评估其执行砌体灌浆所需的结构功能的能力。在温莎大学的结构测试实验室中，将建造和测试大量的砌体棱镜标本和几个高砖石墙标本。此外，将进行计算机模拟，以确定评估负载应用中灌浆材料所需的各种关键信息。这项研究将在五年内完成，七名工程专业的学生将在S. Das博士和B. Banting博士的监督下执行这项工作。这些训练有素且熟练的学生将能够弥合加拿大的技能差距。