Li Hu, Fan Yang, Yijia Huang, Kaixuan Yang, Binbin Li
{"title":"Improvement of phosphate ester grinding aids on cement grinding and water-reducing performance","authors":"Li Hu, Fan Yang, Yijia Huang, Kaixuan Yang, Binbin Li","doi":"10.1680/jadcr.23.00017","DOIUrl":null,"url":null,"abstract":"Phosphate ester polymers were prepared from phosphate ester monomers for the first time, and their effects on cement grinding and water-reducing as grinding aids were studied. FT-IR, standard viscosity, setting time, mortar fluidity, mortar compressive strength, etc., tested phosphorus series products’ properties. The results show that: (1) Dibutyl hydroxyethyl phosphate can reduce the residue of 45 μm and 80 μm grinding sieves by 68.67% and 98.67%, respectively. (2) By comparing with triethanolamine (TEA). It is found that the grinding effect of hydroxyethyl dibutyl phosphate is not only better, but also the optimal mixing amount is smaller, only 0.167%. Under the same grinding amount, the grinding time can be shortened by 30%, and under the same grinding time, the grinding output can be increased by at least 20%. (3) Polymer grinding aids can significantly improve the fluidity of cement paste by 40.06%, which can make the water-reduction rate of cement mortar reach more than 20%. The experimental results show that as a new generation of grinding aids system, phosphate ester grinding aids not only have a significant grinding effect but also have high molecular designability, which will significantly enrich the grinding aids market and effectively promote energy conservation and emission reduction in the grinding field.","PeriodicalId":7299,"journal":{"name":"Advances in Cement Research","volume":" ","pages":""},"PeriodicalIF":1.3000,"publicationDate":"2023-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Cement Research","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1680/jadcr.23.00017","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Phosphate ester polymers were prepared from phosphate ester monomers for the first time, and their effects on cement grinding and water-reducing as grinding aids were studied. FT-IR, standard viscosity, setting time, mortar fluidity, mortar compressive strength, etc., tested phosphorus series products’ properties. The results show that: (1) Dibutyl hydroxyethyl phosphate can reduce the residue of 45 μm and 80 μm grinding sieves by 68.67% and 98.67%, respectively. (2) By comparing with triethanolamine (TEA). It is found that the grinding effect of hydroxyethyl dibutyl phosphate is not only better, but also the optimal mixing amount is smaller, only 0.167%. Under the same grinding amount, the grinding time can be shortened by 30%, and under the same grinding time, the grinding output can be increased by at least 20%. (3) Polymer grinding aids can significantly improve the fluidity of cement paste by 40.06%, which can make the water-reduction rate of cement mortar reach more than 20%. The experimental results show that as a new generation of grinding aids system, phosphate ester grinding aids not only have a significant grinding effect but also have high molecular designability, which will significantly enrich the grinding aids market and effectively promote energy conservation and emission reduction in the grinding field.
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.