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Efecto del contenido de CaO en las cenizas volantes de clase C en las propiedades de deformación del hormigón
Longsheng Qin1, Miaomiao Gong2, Hongfei Zhang3
1Xinjiang Water Resources Development and Construction Group Co. Ltd, Urumqi, 830000, China.
Scientific reports
|February 10, 2026
Resumen
Las cenizas volantes de clase C con contenido variable de CaO afectan la deformación del concreto. El contenido óptimo de cenizas volantes de CaO mejora las propiedades del concreto, mejorando la aplicación de recursos y el rendimiento del material.
Área de la Ciencia:
- Ingeniería Civil Ingeniería Civil.
- Ciencia de los materiales Ciencia de los materiales.
- Ingeniería Geotécnica Ingeniería Geotécnica.
Sus antecedentes:
- La utilización de cenizas volantes de clase C es clave para la construcción sostenible.
- Comprender el impacto de las cenizas volantes en la deformación del concreto es crucial para la integridad estructural.
- El contenido variable de óxido de calcio (CaO) en las cenizas volantes influye en su rendimiento.
Objetivo del estudio:
- Para investigar el efecto de diferentes contenidos de CaO de la clase C cenizas volantes en las propiedades de deformación del concreto.
- Para determinar el contenido óptimo de CaO para las cenizas volantes en aplicaciones concretas.
- Para evaluar la influencia de la clasificación de las cenizas volantes en el rendimiento del concreto.
Principales métodos:
- Cenizas volantes seleccionadas con contenido de CaO de 0% a 22% como aditivos para hormigón.
- Estudia la solidez del concreto y las propiedades de deformación (resistencia a la tracción máxima, módulo elástico, deformación autógena del volumen, contracción por secado).
- Comparó mezclas de hormigón de cuatro y tres grados.
Principales resultados:
- El hormigón de cuatro grados exhibió una mayor resistencia a la tracción y una mayor deformación del volumen, pero un menor módulo elástico y un menor encogimiento al secarse en comparación con el hormigón de tres grados.
- Las cenizas volantes con un contenido de CaO del 5,1% al 16,5% cumplían con los requisitos de solidez para aplicaciones concretas.
- La resistencia a la tracción final y el módulo elástico del hormigón aumentaron con el contenido de CaO de las cenizas volantes, mientras que la deformación de volumen autógena disminuyó.
Conclusiones:
- Las cenizas volantes de clase C con un contenido específico de CaO (5,1-16,5%) son adecuadas para aplicaciones concretas.
- La clasificación de las cenizas volantes afecta significativamente las propiedades mecánicas y de deformación del hormigón.
- La optimización del contenido de CaO en las cenizas volantes puede mejorar la aplicación y el rendimiento de los recursos concretos.
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