张 宇,张云升,方 硕

本研究采用五种不同的界面处理方式，包括未处理界面、涂刷水泥净浆界面剂、掺10%U型膨胀剂的水泥净浆界面剂、环氧型界面剂和CN405复合型界面剂。通过劈裂抗拉试验与X-CT测试，系统分析界面剂对3D打印混凝土与后浇混凝土界面粘结性能的影响。结果表明，掺膨胀剂的水泥净浆界面剂与CN405复合型界面剂提升效果最为显著，粘结强度较未处理界面分别提高81%与50%，孔隙率分别降低了42%与31%，而环氧型界面剂则降低了界面粘结强度。研究结果可为3D打印混凝土界面性能的优化设计与工程应用提供理论支撑。

界面剂；3D打印混凝土；永久模板；劈裂粘结强度；X-CT

[1] Wangler T,Roussel N,Bos F P,et al..Digital concrete:a review[J].Cement and Concrete Research,2019,123:105780. [2] Yang Y,Wu C,Liu Z,et al.Mechanical anisotropy of ultra-high performance fibre-reinforced concrete for 3D printing[J].Cement and Concrete Composites,2022,125:104310. [3] Ma G,Li Z,Wang L,et al..Mechanical anisotropy of aligned fiber reinforced composite for extrusion-based 3D printing[J].Construction and Building Materials,2019,202:770-783. [4] Zhu B,Nematollahi B,Pan J,et al.3D concrete printing of permanent formwork for concrete column construction[J].Cement and Concrete Composites,2021,121:104039. [5] Liu B,Guo Y,Wang Y,et al..Study on the compression performance of 3D printing concrete permanent formwork composite c olumns[J].Journal of Building Engineering,2024,98:111245. [6] 张治成，叶志凯，孙晓燕，等。3D 打印混凝土永久模板叠合柱的抗压性能数值模拟研究[J].土木与环境工程学报（中英文）: 1-14. [7] Wang L,Yang Y,Hu Y,et al.Interfacial Properties of Three-Dimensional-Printed Permanent Formwork with Cast-in-Place Concr ete[J].3D Printing and Additive Manufacturing,2022:3dp.2021.0213. [8] Wang L,Yang Y,Yao L,et al.Interfacial bonding properties of 3D printed permanent formwork with the post-casted concrete[J]. Cement and Concrete Composites,2022,128:104457. [9] Chen Y,Zhang Y,Liu Z,et al.3D-printed concrete permanent formwork:Effect of postcast concrete proportion on interface bonding[J].Materials Letters,2023,344:134472. [10] 吴应雄,郑新颜,黄伟,等.超高性能混凝土-既有混凝土界面粘结性能研究综述[J].材料导报,2023(16):1-29. [11] Xu L,Yao Y,Li Y,et al.Review of the Interfacial Bonding Properties between Ultrahigh-Performance Concrete and Normal Concrete[J].Applied Sciences,2023,13(11):6697. [12] Huang H,Yuan Y,Zhang W,et al.Bond behavior between lightweight aggregate concrete and normal weight concrete based on splitting-tensile test[J].Construction and Building Materials,2019,209:306-314. [13] Zhang Y,Zhu P,Liao Z,et al.Interfacial bond properties between normal strength concrete sub.

点击下载PDF