Effect of pre-wetting treatment for waste waterglass foundry sand on the properties of alkali-activated slag

X. Shen; P. Chen; S. Li; Y. Wang; S. Hu; C. Pei; J. Xie

doi:10.3989/mc.2024.371123

Autores/as

X. Shen School of Civil Engineering and Architecture, Anhui University of Science and Technology https://orcid.org/0009-0007-4897-943X
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
S. Li School of Civil Engineering and Architecture, Anhui University of Science and Technology https://orcid.org/0000-0002-7103-5011
Y. Wang School of Civil Engineering and Architecture, Anhui University of Science and Technology https://orcid.org/0000-0003-4992-7205
S. Hu School of Civil Engineering and Architecture, Anhui University of Science and Technology https://orcid.org/0009-0003-3189-6882
C. Pei School of Civil Engineering and Architecture, Anhui University of Science and Technology https://orcid.org/0009-0002-5145-6174
J. Xie School of Civil Engineering and Architecture, Anhui University of Science and Technology https://orcid.org/0000-0002-0364-8406

DOI:

https://doi.org/10.3989/mc.2024.371123

Palabras clave:

Materiales de escorias activadas alcalinamente, Residuo de arena procedente de la fundición de vidrio, Interfase, Resistencia a la compresión, Nanoindentación

Resumen

La arena de fundición de vidrio lixiviado (WwFS, por sus siglas en inglés) es un residuo sólido generado por las industrias de fundición que comúnmente se desecha en los vertederos y tiene necesidades urgentes de eliminación y reciclaje. En consecuencia, este estudio sugiere utilizar WwFS como árido para la preparación de morteros de escoria activada alcalinamente (AASM). Se utilizaron dos métodos de prehumectación diferentes (24 h de prehumectación a 20 °C y 1 ~ 6 h de prehumectación a 70 °C) para tratar el WwFS y se comparó su comportamiento con el de morteros con arena de cuarzo y con WwFS seco. Las resistencias a la compresión de los morteros WwFS que contienen prehumectación WwFS en agua a 70 °C a 28 días aumentaron entre un 1,3 y un 10,0 % respecto a las obtenidas en los morteros WwFS sin tratamiento de humectación previa, y el módulo elástico promedio C-(A)-S-H aumentó un 16%. Este estudio confirmó la viabilidad de utilizar WwFS prehumedecidos con agua caliente como único árido para AASM, lo cual es importante para la utilización a gran escala de WwFS.

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