Developing an indexing methodology for estimating the reactivity of slag from different sources use in alkali-activated materials

IF 3.2 3区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS
Ke-yu Chen , Chao Miao , Guang-hua Lyu , Ke-xian Wu , Jie-jing Chen , Jin Xia
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引用次数: 0

Abstract

The slag is rich in reactive aluminosilicate components and can be combined with alkali solution to form a three-dimensional binder. However, the inherently heterogeneous nature of slag presents challenges to the standardization of alkali-activated product. The fundamental objective of this work is to understand differences of characteristics between slags obtained from different sources within China, including physical properties, chemical composition, microstructure, elemental distribution, mineral phases, chemical bonding, glass contents, together with the microstructures of glassy phase. A novel reactivity index concept to evaluate slag used in alkali activated materials was proposed using seven typical slags in China and validated it against nine data from literature, confirming its considerable effectiveness and usefulness in reactivity evaluations. The positive correlations were found between the reactivity index of slag and the strengths of alkaline-activated pastes prepared by different methods and this index optimizes the process of raw waste selection.
开发用于估算碱活性材料中不同来源炉渣反应性的指数化方法
炉渣富含活性硅酸铝成分,可与碱溶液结合形成三维粘结剂。然而,炉渣固有的异质性给碱活性产品的标准化带来了挑战。这项工作的基本目标是了解中国境内不同来源矿渣的特性差异,包括物理性质、化学成分、微观结构、元素分布、矿物相、化学键、玻璃含量以及玻璃相的微观结构。利用中国的七种典型炉渣,提出了一种新的反应性指数概念来评估碱活性材料中使用的炉渣,并与文献中的九种数据进行了验证,证实了其在反应性评估中的有效性和实用性。研究发现,炉渣的反应性指数与不同方法制备的碱活性浆料的强度之间存在正相关,该指数可优化原废物的选择过程。
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来源期刊
Journal of Non-crystalline Solids
Journal of Non-crystalline Solids 工程技术-材料科学:硅酸盐
CiteScore
6.50
自引率
11.40%
发文量
576
审稿时长
35 days
期刊介绍: The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.
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