Parron-Rubio María Eugenia, Perez-García Francisca, Gonzalez-Herrera Antonio, Rubio-Cintas María Dolores
Departamento de Ingeniería Industrial y Civil, Universidad de Cádiz, 11205 Algeciras, Spain.
Departamento de Ingeniería Civil, Materiales y Fabricación, Universidad de Málaga, 29071 Málaga, Spain.
Materials (Basel). 2018 Jun 17;11(6):1029. doi: 10.3390/ma11061029.
Concrete consumption greatly exceeds the use of any other material in engineering. This is due to its good properties as a construction material and the availability of its components. Nevertheless, the present worldwide construction increases and the high-energy consumption for cement production means a high environmental impact. On the other hand, one of the main problems in the iron and steel industry is waste generation and byproducts that must be properly processed or reused to promote environmental sustainability. One of these byproducts is steel slag. The cement substitution with slag strategy achieves two goals: raw materials consumption reduction and waste management. In the present work, four different concrete mixtures are evaluated. The 25% cement substitution is carried out with different types of slag. Tests were made to evaluate the advantages and drawbacks of each mixture. Depending on the origin, characteristics, and treatment of the slag, the concrete properties changed. Certain mixtures provided proper concrete properties. Stainless steel slag produced a fluent mortar that reduced water consumption with a slight mechanical strength loss. Mixtures with ground granulated blast furnace slag properties are better than the reference concrete (without slag).
混凝土的消耗量在工程领域大大超过了其他任何材料的使用量。这归因于其作为建筑材料的优良性能以及其组分的可得性。然而，当前全球建筑业的增长以及水泥生产的高能耗意味着对环境有很大影响。另一方面，钢铁行业的主要问题之一是废弃物的产生和副产品，必须对其进行妥善处理或再利用以促进环境可持续性。这些副产品之一就是钢渣。用钢渣替代水泥的策略实现了两个目标：减少原材料消耗和废弃物管理。在本研究中，对四种不同的混凝土混合物进行了评估。用不同类型的钢渣进行25%的水泥替代。进行了试验以评估每种混合物的优缺点。根据钢渣的来源、特性和处理方式，混凝土性能发生了变化。某些混合物具备合适的混凝土性能。不锈钢钢渣产生了一种流动性好的砂浆，减少了用水量，同时机械强度略有损失。具有粒化高炉矿渣性能的混合物比参考混凝土（无钢渣）性能更好。
