{"title":"The dispersion and influence of graphene oxide modified polycarboxylate superplasticizer in alkaline cement solution","authors":"Han Zhou, Dongxu Li","doi":"10.1680/jadcr.23.00217","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":"135 6","pages":""},"PeriodicalIF":17.7000,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1680/jadcr.23.00217","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
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.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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