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Study of the Suitability of Different Types of Slag and Its Influence on the Quality of Green Grouts Obtained by Partial Replacement of Cement

机译:不同类型矿渣的适用性及其对水泥部分置换获得的绿色灌浆质量影响的研究

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摘要

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.
机译:本文是致力于减少工业水泥用量的研究路线的一部分。在这项工作中,研究了用于生产绿色水泥浆混合物的工作方法。灌浆在建筑中广泛使用,它需要大量使用原材料。另一方面,由于钢铁制造的增加,钢铁工业面临着越来越多的炉渣废物产生的问题。绿色水泥浆旨在实现减少水泥需求和改善矿渣浪费的双重目标。矿渣不是作为骨料引入的,而是通过直接替代水泥而不添加任何添加剂来实现的。该研究寻求一种可以大量使用钢渣的产品,以确保最小的阻力和可加工性。提出的结果是替换率为25%至50%,水/水泥比为1。特别是分析了不同炉渣(两种钢包炉渣(LFS)和一种高炉渣(GGBS))在最终产品质量中的适用性。强调了用炉渣代替水泥的可行性以及其来源和预处理的重要性。

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