Study on the Effect of Glass Bead Incorporation on the Performance of 3D Printed Glass Bead Insulating Cement-Based Materials

Zhuang Li

doi:10.62051/ijmsts.v5n2.02

Authors

Zhuang Li

DOI:

https://doi.org/10.62051/ijmsts.v5n2.02

Keywords:

3D printing, Vitrified microsphere, Thermal insulation cement-based material, Mechanical properties, Thermal conductivity

Abstract

To address the issues of low strength and poor construction efficiency of traditional insulation materials, this study prepared insulation cement-based materials using glass microspheres as lightweight aggregates through 3D printing technology. Through orthogonal experimental design, the influence of glass microsphere dosage (70% to 110%) on the working performance, mechanical properties and insulation performance of the materials was systematically investigated. The results show that as the dosage of glass microspheres increases, the fluidity of the slurry gradually decreases, and the 28-day compressive strength drops from 5.85 MPa to 0.74 MPa, but the thermal conductivity significantly decreases from 0.1445 w/(m·k) to 0.0632 w/(m·k). When the dosage of glass microspheres is 100%, the material has both good mechanical properties (1.48 MPa) and insulation performance (0.0718 w/(m·k)), meeting the requirements of Type II products in the building insulation mortar standard GB/T 20473-2021. This study provides theoretical basis and technical support for the engineering application of 3D printed insulation cement-based materials.

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