Synergistic effects of nano-alumina and triisopropanolamine in Portland limestone cements with various sulfate levels

IF 10.8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Cement & concrete composites Pub Date : 2025-02-19 DOI:10.1016/j.cemconcomp.2025.105994

Sungwon Sim , Heongwon Suh , Seongmin Cho , Sumin Im , Jaeyeon Park , Junxing Liu , Sungchul Bae

引用次数: 0

Abstract

This study evaluated the synergistic effects of nano-alumina and triisopropanolamine (TIPA) on the physicochemical properties of Portland limestone cement (PLC) with varying gypsum contents. The incorporation of nano-alumina and TIPA into PLC pastes with 3 and 9 wt % of gypsum resulted in increased heat release during the initial dissolution period and total heat release of cement hydration, and significantly enhanced the silicate and aluminate reactions. In addition, their combined use significantly improved the compressive strength of the PLC pastes, produced denser microstructures with lower porosities, and altered the pore shapes in the pastes. The synergistic advantages are likely related to the role of nano-alumina as a reactive filler and the use of TIPA that enhances the reactivity of the clinker phases.

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纳米氧化铝和三异丙醇胺在不同硫酸盐水平硅酸盐水泥中的协同作用

本研究评价了纳米氧化铝和三异丙醇胺（TIPA）对不同石膏含量硅酸盐石灰水泥（PLC）理化性能的协同效应。将纳米氧化铝和TIPA掺入石膏含量分别为3%和9%的PLC膏体中，增加了水泥初始溶解期的放热量和水化总放热量，并显著增强了硅酸盐和铝酸盐反应。此外，它们的联合使用显著提高了PLC膏体的抗压强度，产生了更致密的微观结构和更低的孔隙率，并改变了膏体的孔隙形状。协同优势可能与纳米氧化铝作为反应性填料的作用和TIPA的使用有关，TIPA提高了熟料相的反应性

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cement & concrete composites 工程技术-材料科学：复合

CiteScore

18.70

自引率

11.40%

发文量

459

审稿时长

65 days

期刊介绍： Cement & concrete composites focuses on advancements in cement-concrete composite technology and the production, use, and performance of cement-based construction materials. It covers a wide range of materials, including fiber-reinforced composites, polymer composites, ferrocement, and those incorporating special aggregates or waste materials. Major themes include microstructure, material properties, testing, durability, mechanics, modeling, design, fabrication, and practical applications. The journal welcomes papers on structural behavior, field studies, repair and maintenance, serviceability, and sustainability. It aims to enhance understanding, provide a platform for unconventional materials, promote low-cost energy-saving materials, and bridge the gap between materials science, engineering, and construction. Special issues on emerging topics are also published to encourage collaboration between materials scientists, engineers, designers, and fabricators.