{"title":"The influence of eggshell powder and limestone on the rheological properties of cement pastes","authors":"S. Grzeszczyk, A. Kaleta-Jurowska, K. Jurowski","doi":"10.32047/cwb.2022.27.6.3","DOIUrl":null,"url":null,"abstract":"The paper presents the effect of the powders obtained from egg-shells and limestone on the rheological properties of cement pastes. Both powders were added to Portland cement CEM I 42.5 R, 30% by mass. The higher yield stress and plastic viscosity of the cement pastes prepared with the addition of eggshell powder, compared to the cement pastes made with limestone powder, were explained by the influence of the eggshell membrane and its chemical structure. The membrane, which absorbs water and expands in the cement paste, is causing an increase in rheological parameters. The membrane, which absorbs water and swells in the cement paste, causes an increase in viscosity and thixotropy compared to the neat cement slurry and slurry with limestone meal added as a result of particle bonding.","PeriodicalId":55632,"journal":{"name":"Cement Wapno Beton","volume":"239 1","pages":""},"PeriodicalIF":0.5000,"publicationDate":"2023-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cement Wapno Beton","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.32047/cwb.2022.27.6.3","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
The paper presents the effect of the powders obtained from egg-shells and limestone on the rheological properties of cement pastes. Both powders were added to Portland cement CEM I 42.5 R, 30% by mass. The higher yield stress and plastic viscosity of the cement pastes prepared with the addition of eggshell powder, compared to the cement pastes made with limestone powder, were explained by the influence of the eggshell membrane and its chemical structure. The membrane, which absorbs water and expands in the cement paste, is causing an increase in rheological parameters. The membrane, which absorbs water and swells in the cement paste, causes an increase in viscosity and thixotropy compared to the neat cement slurry and slurry with limestone meal added as a result of particle bonding.
本文研究了蛋壳粉和石灰石粉对水泥浆体流变性能的影响。两种粉末均加入波特兰水泥CEM I 42.5 R，质量比为30%。蛋壳粉对水泥浆体的屈服应力和塑性粘度的影响，可以通过蛋壳膜及其化学结构的影响来解释。膜吸收水并在水泥浆中膨胀，导致流变参数增加。与纯水泥浆和添加石灰石粉的泥浆相比，由于颗粒结合，膜在水泥浆中吸水膨胀，导致粘度和触变性增加。
Cement Wapno BetonCONSTRUCTION & BUILDING TECHNOLOGY-MATERIALS SCIENCE, COMPOSITES
CiteScore
1.30
自引率
28.60%
发文量
0
审稿时长
>12 weeks
期刊介绍：
The Publisher of the scientific bimonthly of international circulation, entitled "Cement-Wapno-Beton" ["Cement-Lime-Concrete"], is the Fundacja Cement, Wapno, Beton [Foundation Cement, Lime, Concrete]. The periodical is dedicated to the issues concerning mineral setting materials and concrete. It is concerned with the publication of academic and research works from the field of chemistry and technology of building setting materials and concrete
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