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Delayed Strength Development of Composite Cementitious with Calcium Silicate Slag
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.
Delayed Strength Development of Composite Cementitious with Calcium Silicate Slag
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.
Delayed Strength Development of Composite Cementitious with Calcium Silicate Slag
KSCE J Civ Eng
Bai, Ru (author) / Zhang, Ju (author) / Yan, Changwang (author) / Liu, Shuguang (author) / Wang, Xiaoxiao (author) / Yang, Zhijie (author) / Jing, Hao (author)
KSCE Journal of Civil Engineering ; 27 ; 2509-2518
2023-06-01
10 pages
Article (Journal)
Electronic Resource
English
Hydration Characteristics of Cementitious Composites Containing Calcium Silicate Slag Powder
| Springer Verlag | 2023