Using pulverized calcium silicate slag (CSS) to replace part of Portland cement (PC) as composite cementitious material is the most energy-saving and clean treatment method. The main objective of this study was to investigate the delayed strength development of the CSS-PC composite cementitious. The compressive strength of the composite cementitious with 10% to 40% CSS was tested, the delayed strength was calculated, and the delayed age was analyzed. Results showed that the delayed strength and delayed age increased with the increase in the substitution rate of CSS, which was determined by the ratio of C2S and C3S. Moreover, a compressive strength prediction model of CSS-PC composite cementitious was established based on the “core-shell” hydration model. The calculated value was compared with the specification value of each country to analyze whether the compressive strength of CSS-PC composite cementitious meets the engineering requirements.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Delayed Strength Development of Composite Cementitious with Calcium Silicate Slag


    Additional title:

    KSCE J Civ Eng


    Contributors:
    Bai, Ru (author) / Zhang, Ju (author) / Yan, Changwang (author) / Liu, Shuguang (author) / Wang, Xiaoxiao (author) / Yang, Zhijie (author) / Jing, Hao (author)

    Published in:

    Publication date :

    2023-06-01


    Size :

    10 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Hydration Characteristics of Cementitious Composites Containing Calcium Silicate Slag Powder

    Bai, Ru / Zhang, Ju / Yan, Changwang et al. | Springer Verlag | 2023


    Xonotlite and Hillebrandite as Model Compounds for Calcium Silicate Hydrate Seeding in Cementitious Materials

    John, Elisabeth / Lehmann, Christian / Stephan, Dietmar | Transportation Research Record | 2020



    Study on Hydration and Hardening Performance of Coal Gangue-Steel Slag-Cement Composite Cementitious Material

    Zhao, Xiaozhi / Wang, Liang / Wang, Chenglong et al. | Springer Verlag | 2024


    Study on Hydration and Hardening Performance of Coal Gangue-Steel Slag-Cement Composite Cementitious Material

    Zhao, Xiaozhi / Wang, Liang / Wang, Chenglong et al. | Springer Verlag | 2024