Recycling waste fresh paste through a Dormant & Awaking re-utilization approach

Z. Zong; P. Chen; X. Qian; J. Li; H. Fang; L. Wang

doi:10.3989/mc.2025.379024

Autores/as

Z. Zong School of Civil Engineering and Architecture, Anhui University of Science and Technology https://orcid.org/0009-0003-4466-9363
P. Chen School of Civil Engineering and Architecture, Anhui University of Science and Technology - State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science and Technology https://orcid.org/0000-0002-5538-617X
X. Qian School of Civil Engineering and Architecture, Anhui University of Science and Technology https://orcid.org/0000-0001-7132-5994
J. Li School of Civil Engineering and Architecture, Anhui University of Science and Technology https://orcid.org/0000-0001-9914-5944
H. Fang School of Civil Engineering and Architecture, Anhui University of Science and Technology https://orcid.org/0009-0004-2399-8253
L. Wang School of Civil Engineering and Architecture, Anhui University of Science and Technology https://orcid.org/0009-0001-1783-4277

DOI:

https://doi.org/10.3989/mc.2025.379024

Palabras clave:

Residuos de hormigón fresco, Inactivación, Despertar, Hidratación, Resistencia a la compresión

Resumen

Este artículo propone un enfoque innovador para gestionar y reciclar los residuos de hormigón fresco (WFP) de las plantas mezcladoras de hormigón mediante un método de Inactivar y Despertar. Este método utiliza ácido cítrico para inducir la inactivación en la WFP, ralentizando la hidratación del cemento, y luego emplea cemento de aluminato de calcio (CAC) para reactivar la hidratación. Los experimentos revelan que el ácido cítrico detiene efectivamente la hidratación del cemento, permitiendo un mayor tiempo de recolección y almacenamiento. La adición de CAC facilita la rápida rehidratación al absorber y utilizar el agua libre en los poros del cemento. Con una adición del 17.4% o 26.1% de CAC, la resistencia a la compresión de la WFP se recupera a niveles comparables con la mezcla original después de 28 días de curado. Este método ofrece una solución eficiente y flexible para el manejo de la WFP.

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Citas

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