Investigation on mechanical properties regulation of rock-like specimens based on 3D printing and similarity quantification

• DOI: 10.1016/j.ijmst.2024.05.004
• Publication Date: 2024-07-06T19:49:38Z
• Authors: Duanyang Zhuang; Zexu Ning; Yunmin Chen; Jinlong Li; Qingdong Li; Wenjie Xu
• Keywords: Cohesion (chemistry); 3d printed

3D printing is widely adopted to quickly produce rock mass models with complex structures in batches, improving the consistency and repeatability of physical modeling. It necessary regulate mechanical properties 3D-printed specimens make them proportionally similar natural rocks. This study investigates analogues prepared by furan resin-bonded silica sand particles. The property regulation realized through quantifying its similarity sandstone, so that analogous deformation characteristics failure mode are acquired. Considering conversion, uniaxial compressive strength, cohesion stress–strain relationship curve specimen those sandstone. In ranges, strength positively correlated additive content, negatively particle size, first increases then decreases increase curing temperature. scheme optimal quantification index, type 70/140, content 2.5‰ temperature 81.6 ℃, determined for preparing sandstone models. effectiveness proved compression contrast tests. provides a reference rock-like engineering using technology.