Perez-Garcia Francisca, Parron-Rubio Maria Eugenia, Garcia-Manrique Jose Manuel, Rubio-Cintas Maria Dolores
Departamento de Ingeniería Civil, Materiales y Fabricación, Universidad de Málaga, 29071 Málaga, Spain.
Departamento de Ingeniería Industrial y Civil, Universidad de Cádiz, 11202 Algeciras, Spain.
Materials (Basel). 2019 Apr 10;12(7):1166. doi: 10.3390/ma12071166.
This paper is part of a research line focused on the reduction of the use of cement in the industry. In this work, the study of work methodologies for the manufacture of green cementitious grout mixtures is studied. Grout is widely used in construction and it requires an important use of raw materials. On the other hand, the steel industry faces the problem of the growing generation of slag wastes due to the increase in steel manufacturing. The green grout aims to achieve the dual objective of reducing the demand for cement and improve the slag waste valorization. Slag is not introduced as an aggregate but through the direct replacement of cement and no additives. The research seeks a product where we can use steel slag intensively, guaranteeing minimum resistance and workability. Results with substitutions between a 25% to 50% and water/cement ratio of 1 are presented. In particular, the suitability of different slags (two Ladle Furnace Slag (LFS) and one Blast Furnace Slag (GGBS)) in the quality of the final product are analyzed. The feasibility of replacing cement with slag and the importance of the origin and pretreatment are highlighted.
本文是一项专注于减少工业中水泥使用量的研究系列的一部分。在这项工作中，对绿色水泥基灌浆混合物制造的工作方法进行了研究。灌浆在建筑中广泛使用，并且需要大量使用原材料。另一方面，钢铁行业面临着由于钢铁制造量增加而产生的炉渣废物不断增多的问题。绿色灌浆旨在实现减少水泥需求和提高炉渣废物附加值这一双重目标。炉渣不是作为骨料引入，而是通过直接替代水泥且不添加添加剂的方式。该研究寻求一种能够大量使用钢渣的产品，同时保证最低的强度和工作性能。给出了25%至50%替代率以及水灰比为1时的结果。特别地，分析了不同炉渣（两种钢包精炼炉炉渣（LFS）和一种粒化高炉矿渣（GGBS））对最终产品质量的适用性。强调了用炉渣替代水泥的可行性以及炉渣来源和预处理的重要性。
