Enhanced hydration reaction of synthesized C4A0.81F1.19 with the use of different grinding agents

IF 3.4 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Materials and Structures Pub Date : 2024-10-10 DOI:10.1617/s11527-024-02476-x

Hyunuk Kang, Yangwoo Lee, Sungjin Jung, Juhyuk Moon

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引用次数: 0

Abstract

Tetracalcium aluminoferrite (C₄AF) presents in ordinary Portland cement (OPC) as a solid solution phase, as C₄A_xF_2−x (0.7 ≤ x ≤ 1.1). There is a limited understanding of the hydration reactions of C₄AF, particularly regarding the influence of alkanolamines (AA) on C₄AF, which can substantially alter OPC hydration. In this study, synthesized C₄A_0.81F_1.19 was subjected to grinding, using three different AA (triisopropanolamine, ethanol diisopropanolamine, and diethanol isopropanolamine) at dosages of 0, 0.1, and 0.3%. It was experimentally confirmed that the crystal structure of unhydrated C₄AF was partially changed during the grinding process, and the hydration properties of C₄AF were modified. From these results, the compressive strength improved significantly, and the rate of strength enhancement was the highest with 0.1% of diethanol isopropanolamine. More specifically, it was revealed that both Fe and Al sources were proficiently activated, leading to the production of Al/Fe-containing AFm phases and efficiently enhanced mechanical properties.

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使用不同研磨剂增强合成的 C4A0.81F1.19 的水化反应

铝铁酸四钙（C4AF）在普通硅酸盐水泥（OPC）中以 C4AxF2-x (0.7 ≤ x ≤ 1.1) 的固溶相形式存在。人们对 C4AF 的水合反应了解有限，尤其是烷醇胺 (AA) 对 C4AF 的影响，因为烷醇胺会大大改变 OPC 的水合反应。在本研究中，对合成的 C4A0.81F1.19 进行了研磨，使用了三种不同的 AA（三异丙醇胺、乙醇二异丙醇胺和二乙醇异丙醇胺），用量分别为 0、0.1 和 0.3%。实验证实，在研磨过程中，未水合的 C4AF 晶体结构发生了部分变化，C4AF 的水合特性也发生了改变。从这些结果来看，抗压强度显著提高，其中 0.1% 的二乙醇异丙醇胺的强度提高率最高。更具体地说，研究发现铁源和铝源都被有效激活，从而产生了含铝/铁的 AFm 相，并有效提高了机械性能。

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来源期刊

Materials and Structures 工程技术-材料科学：综合

CiteScore

6.40

自引率

7.90%

发文量

222

审稿时长

5.9 months

期刊介绍： Materials and Structures, the flagship publication of the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), provides a unique international and interdisciplinary forum for new research findings on the performance of construction materials. A leader in cutting-edge research, the journal is dedicated to the publication of high quality papers examining the fundamental properties of building materials, their characterization and processing techniques, modeling, standardization of test methods, and the application of research results in building and civil engineering. Materials and Structures also publishes comprehensive reports prepared by the RILEM’s technical committees.