Metals | |
The Effect of Silica Sand Proportion in Laser Scabbling Process on Cement Mortar | |
Dongkyoung Lee1  Tam-Van Huynh1  Youngjin Seo1  | |
[1] Department of Future Convergence Engineering, Kongju National University, Cheonan 31080, Korea; | |
关键词: cement-based material; laser scabbling; microstructural analysis; chemical analysis; thermal properties; | |
DOI : 10.3390/met11121914 | |
来源: DOAJ |
【 摘 要 】
Cement mortar composite has a wide range of applications on construction sites, including masonry, plastering and concrete repair. In construction sites, scabbling process is a method to remove from a few millimeters to several centimeters of defect concrete surfaces. As a result, it is essential to investigate the scabbling characteristics for cement mortar with different silica sand proportion in laser scabbling process. In this study, 5 types of cement mortar with different silica sand proportions in mixing were fabricated and scabbled by using a high-density power laser beam. The effects of silica sand proportion in color changing and penetration depth of the samples after laser scabbling process were studied. Furthermore, the generation of micro-cracks and pores were observed by using scanning electron microscopy (SEM). In addition, chemical composition changes between processed zone and non-processed zone were also evaluated by Energy Dispersive X-ray (EDX) analysis. The results of this study are expected to provide valuable knowledge in understanding of the laser scabbling process for cement-based materials.
【 授权许可】
Unknown