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    Effects of EVA and SAE Emulsions on Hydration and Drying Shrinkage of Calcium Sulfoaluminate Cement Pastes

    Source: Journal of Materials in Civil Engineering:;2024:;Volume ( 036 ):;issue: 007::page 04024176-1
    Author:
    Qi Ding
    ,
    Yishun Liao
    ,
    Jinxin Yao
    ,
    Hao Xu
    ,
    Yuzhang Gao
    ,
    Seth Silupumbwe
    ,
    Kejin Wang
    ,
    Shengwen Tang
    DOI: 10.1061/JMCEE7.MTENG-17414
    Publisher: American Society of Civil Engineers
    Abstract: The utilization of calcium sulfoaluminate (CSA) cement, known for its rapid strength gain and low carbon footprint, has been increasingly prevalent in the field of construction. This research aims to enhance the mechanical properties of CSA cement-based materials by incorporating ethylene-vinyl acetate (EVA) and styrene acrylate ester (SAE) copolymers. Various dosages (expressed as mass fractions) of EVA and SAE were utilized in the production of CSA cement pastes. The fluidity, setting time, electrical resistivity, and mechanical properties, including flexural strength, compressive strength, and drying shrinkage behavior, were thoroughly assessed for the CSA cement pastes, and the products of hydration in the cement pastes were analyzed. The findings suggest that the inclusion of polymer emulsions in CSA cement pastes resulted in prolonging setting time and hindering hydration. While the addition of SAE did not enhance flexural and compressive strength, the incorporation of 10% SAE effectively reduced drying shrinkage and significantly improved the flexural-to-compressive strength ratio of the CSA cement pastes after 6 h. When the SAE content reached 5%, the fluidity of cement paste could be effectively increased. On the other hand, the inclusion of EVA improved the early-age flexural strength at 6 h but did not effectively reduce drying shrinkage in the CSA cement pastes. When 5% EVA was used, the 28-day compressive strength exceeded that of the control sample (with no polymer).
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      Effects of EVA and SAE Emulsions on Hydration and Drying Shrinkage of Calcium Sulfoaluminate Cement Pastes

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4299224
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    • Journal of Materials in Civil Engineering

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    contributor authorQi Ding
    contributor authorYishun Liao
    contributor authorJinxin Yao
    contributor authorHao Xu
    contributor authorYuzhang Gao
    contributor authorSeth Silupumbwe
    contributor authorKejin Wang
    contributor authorShengwen Tang
    date accessioned2024-12-24T10:36:11Z
    date available2024-12-24T10:36:11Z
    date copyright7/1/2024 12:00:00 AM
    date issued2024
    identifier otherJMCEE7.MTENG-17414.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4299224
    description abstractThe utilization of calcium sulfoaluminate (CSA) cement, known for its rapid strength gain and low carbon footprint, has been increasingly prevalent in the field of construction. This research aims to enhance the mechanical properties of CSA cement-based materials by incorporating ethylene-vinyl acetate (EVA) and styrene acrylate ester (SAE) copolymers. Various dosages (expressed as mass fractions) of EVA and SAE were utilized in the production of CSA cement pastes. The fluidity, setting time, electrical resistivity, and mechanical properties, including flexural strength, compressive strength, and drying shrinkage behavior, were thoroughly assessed for the CSA cement pastes, and the products of hydration in the cement pastes were analyzed. The findings suggest that the inclusion of polymer emulsions in CSA cement pastes resulted in prolonging setting time and hindering hydration. While the addition of SAE did not enhance flexural and compressive strength, the incorporation of 10% SAE effectively reduced drying shrinkage and significantly improved the flexural-to-compressive strength ratio of the CSA cement pastes after 6 h. When the SAE content reached 5%, the fluidity of cement paste could be effectively increased. On the other hand, the inclusion of EVA improved the early-age flexural strength at 6 h but did not effectively reduce drying shrinkage in the CSA cement pastes. When 5% EVA was used, the 28-day compressive strength exceeded that of the control sample (with no polymer).
    publisherAmerican Society of Civil Engineers
    titleEffects of EVA and SAE Emulsions on Hydration and Drying Shrinkage of Calcium Sulfoaluminate Cement Pastes
    typeJournal Article
    journal volume36
    journal issue7
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/JMCEE7.MTENG-17414
    journal fristpage04024176-1
    journal lastpage04024176-12
    page12
    treeJournal of Materials in Civil Engineering:;2024:;Volume ( 036 ):;issue: 007
    contenttypeFulltext
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