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Coating mortars based on mining and industrial residues
Journal of Material Cycles and Waste Management ( IF 3.1 ) Pub Date : 2020-05-16 , DOI: 10.1007/s10163-020-01051-0
Júlia Castro Mendes , Rodrigo Rony Barreto , Vanessa de Freitas Vilaça , Amanda Vitor Lopes , Henor Artur de Souza , Ricardo André Fiorotti Peixoto

The present work assesses the feasibility of using mining and industrial residues as aggregates of coating mortars in terms of building thermal performance. For this purpose, we investigated four types of aggregates (river sand—REF, iron ore tailings—IOT, friable quartzite—QTZ, and steelmaking slag—SLG). Initially, the specific gravity (density) and thermal conductivity of the residue-based mortars were experimentally obtained. Subsequently, a sensitivity analysis was performed through energy simulations of two existing dwellings. Mortars with SLG and IOT presented the best performance due to their low thermal conductivity and, more importantly, their high density. Mortars with SLG presented 64% of thermal performance classifications as “superior” and “intermediate”, versus an average of 53% for the other aggregates. They were followed by those with IOT, REF and lastly those with QTZ. Therefore, these mortars are cost-effective and sustainable solutions to passively improve the thermal performance of buildings, as well as to mitigate the impacts of the disposal of these residues.



中文翻译:

基于采矿和工业残留物的涂料砂浆

根据建筑物的热性能,目前的工作评估了将采矿和工业残余物用作砂浆砂浆骨料的可行性。为此,我们研究了四种集料(河砂REF,铁矿石尾矿IOT,易碎石英岩QTZ和炼钢炉渣SLG)。最初,通过实验获得了基于残余物的砂浆的比重(密度)和导热率。随后,通过对两个现有住宅的能量模拟进行了敏感性分析。具有SLG和IOT的砂浆表现出最佳的性能,这是因为它们的导热系数低,更重要的是,它们的密度高。具有SLG的砂浆在热性能分类中占“优级”和“中级”的比例为64%,而其他骨料的平均值为53%。紧随其后的是拥有IOT,REF的企业,最后是拥有QTZ的企业。因此,这些砂浆是经济有效且可持续的解决方案,可以被动地改善建筑物的热性能,并减轻处置这些残渣的影响。

更新日期:2020-05-16
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