氧化石墨烯改性聚羧酸盐超塑化剂在碱性水泥溶液中的分散及其影响

IF 1.4 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Advances in Cement Research Pub Date : 2024-03-11 DOI:10.1680/jadcr.23.00217

Han Zhou, Dongxu Li

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引用次数: 0

摘要

氧化石墨烯（GO）在碱性溶液中的聚集是限制其在水泥基材料中潜在应用的一个关键因素。本研究采用了一种新型超塑化剂作为分散剂，并通过滴加法合成了 GO@PCE 减水剂。这种合成方法不仅保留了 PCE 的减水功能，还提高了 GO 在碱性水泥溶液中的分散性。此外，该合成方法简单易行。结果表明，GO@PCE 在饱和氢氧化钙溶液中能保持良好的分散性。此外，还观察到 GO@PCE 可增强水泥的可操作性，加速水泥水化，降低氢氧化钙的结晶尺寸，并有效提高水泥砂浆的抗压强度。

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The dispersion and influence of graphene oxide modified polycarboxylate superplasticizer in alkaline cement solution

The aggregation of graphene oxide (GO) in alkaline solutions is a critical factor that limits its potential application in cement-based materials. In this study, a novel superplasticizer was employed as a dispersant, and the GO@PCE water-reducing agent was synthesized through a dropwise addition method. This synthesis approach not only preserves the water-reducing capabilities of PCE but also enhances the dispersibility of GO in alkaline cement solutions. Furthermore, the synthesis method is straightforward. The results demonstrate that GO@PCE maintains excellent dispersion in saturated calcium hydroxide solution. Furthermore, it was observed that GO@PCE can enhance the workability of cement, accelerate cement hydration, reduce the crystallite size of calcium hydroxide, and effectively increase the compressive strength of cement mortar.

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来源期刊

Advances in Cement Research 工程技术-材料科学：综合

CiteScore

3.70

自引率

5.00%

发文量

审稿时长

3.2 months

期刊介绍： Advances in Cement Research highlights the scientific ideas and innovations within the cutting-edge cement manufacture industry. It is a global journal with a scope encompassing cement manufacture and materials, properties and durability of cementitious materials and systems, hydration, interaction of cement with other materials, analysis and testing, special cements and applications.