Effect of graphene oxide on the hydration process and macro-mechanical properties of cement

IF 2.7 4区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Boletin de la Sociedad Espanola de Ceramica y Vidrio Pub Date : 2024-07-01 DOI:10.1016/j.bsecv.2024.03.001

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引用次数: 0

Abstract

The impact of graphene oxide (GO) on the hydration process, calcium silicate hydrate (CSH) gels structure, and macro-mechanical properties were systematically researched by combinatorial techniques. Findings from ²⁹Si MAS-NMR and nitrogen adsorption (BET) revealed that the effect of GO on the hydration degree of the cement paste, and the main chain length (MCL) is more pronounced at advanced ages (from 28 days), due to its act as a nucleation site. Moreover, the results of Raman spectroscopy tests showed that GO has a strong interaction with the cement matrix. Due to the increase in the degree of hydration, the lengthening of the chain length (MCL), and the formation of strong bonds, both compressive and flexural strength tests also improved. Therefore, the effect of GO as a nucleation site has a positive effect on the cement paste nano-properties at advanced ages.

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氧化石墨烯对水泥水化过程和宏观力学性能的影响

通过组合技术系统研究了氧化石墨烯（GO）对水化过程、硅酸钙水合物（CSH）凝胶结构和宏观力学性能的影响。29Si MAS-NMR 和氮吸附（BET）的研究结果表明，GO 对水泥浆水化程度和主链长度（MCL）的影响在高龄期（28 天以上）更为明显，这是因为它起到了成核作用。此外，拉曼光谱测试结果表明，GO 与水泥基质有很强的相互作用。由于水化程度的增加、链长（MCL）的延长以及强键的形成，抗压和抗折强度测试也得到了改善。因此，GO 作为成核位点对水泥浆在高龄期的纳米性能有积极影响。

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来源期刊

Boletin de la Sociedad Espanola de Ceramica y Vidrio 工程技术-材料科学：硅酸盐

CiteScore

5.50

自引率

2.90%

发文量

审稿时长

103 days

期刊介绍： The Journal of the Spanish Ceramic and Glass Society publishes scientific articles and communications describing original research and reviews relating to ceramic materials and glasses. The main interests are on novel generic science and technology establishing the relationships between synthesis, processing microstructure and properties of materials. Papers may deal with ceramics and glasses included in any of the conventional categories: structural, functional, traditional, composites and cultural heritage. The main objective of the Journal of the Spanish Ceramic and Glass Society is to sustain a high standard research quality by means of appropriate reviewing procedures.