Study on improving interface bonding performance of magnesium potassium phosphate cement mortar

J. Zhang; Y. Ji; Z.  Xu; Q. Xue; Y. Zhou; C. Jin

doi:10.3989/mc.2021.00421

Autores/as

J. Zhang Jiangsu Key Laboratory Environmental Impact and Structural Safety in Engineering, China University of Mining and Technology, (Xuzhou, Jiangsu, China) / School of Architecture Engineering, Xuzhou College of Industrial Technology, (Xuzhou, Jiangsu, China) https://orcid.org/0000-0003-2618-6563
Y. Ji Jiangsu Key Laboratory Environmental Impact and Structural Safety in Engineering, China University of Mining and Technology, (Xuzhou, Jiangsu, China) / State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, (Xuzhou, Jiangsu, China) https://orcid.org/0000-0002-7414-9719
Z. Xu Jiangsu Key Laboratory Environmental Impact and Structural Safety in Engineering, China University of Mining and Technology, (Xuzhou, Jiangsu, China) / State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, (Xuzhou, Jiangsu, China) https://orcid.org/0000-0001-7217-4614
Q. Xue Jiangsu Key Laboratory Environmental Impact and Structural Safety in Engineering, China University of Mining and Technology, (Xuzhou, Jiangsu, China) / State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, (Xuzhou, Jiangsu, China) / Jiangsu Collaborative Innovation Center for Building Energy Saving and Construct Technology, (Xuzhou, Jiangsu, China) https://orcid.org/0000-0003-0939-5515
Y. Zhou Jiangsu Key Laboratory Environmental Impact and Structural Safety in Engineering, China University of Mining and Technology, (Xuzhou, Jiangsu, China) / State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, (Xuzhou, Jiangsu, China) https://orcid.org/0000-0003-3056-6905
C. Jin Jiangsu Key Laboratory Environmental Impact and Structural Safety in Engineering, China University of Mining and Technology, (Xuzhou, Jiangsu, China) https://orcid.org/0000-0003-1655-3892

DOI:

https://doi.org/10.3989/mc.2021.00421

Palabras clave:

Cemento con adiciones, Adherencia, Resistencia a la flexión, Zona intersticial, Mortero

Resumen

Para mejorar el rendimiento de la adhesión entre el mortero de reparación de cemento de fosfato de magnesio y potasio (MKPC) y el hormigón matriz, se utilizó un mortero modificado con MKPC como material de reparación para unir piezas de ensayo prismáticas largas. Se utilizó el ensayo de flexión en cuatro puntos para determinar la capacidad de soporte a la flexión del prisma largo, y se investigó la influencia del cambio de las condiciones de la interfaz y la modificación del mortero de reparación MKPC en la mejora del rendimiento básico del componente de unión. Los resultados de la investigación muestran que, cuando la sección de hormigón matriz está en estado natural, la aplicación de agentes de interfaz MKPC modificados con humo de sílice en la interfaz con un espesor de reparación de 3 cm puede mejorar el rendimiento de unión de la interfaz. Además, el rendimiento de trabajo y las propiedades mecánicas del mortero de reparación MKPC modificado con escoria de níquel-hierro y fibras de acero mejora significativamente.

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Citas

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