偏高岭土与石灰石粉增强3D打印水泥基材料的各向异性研究

摘要/Abstract

摘要： 3D打印水泥基材料堆叠成型的工艺导致其条间接触面性能下降,偏高岭土的加入能够使材料孔隙率降低,力学性能提高,但偏高岭土的高需水性会造成打印条带表面水分损失,层间黏结性能下降,而石灰石粉的稀释效应可以改善这一点。本文研究了复掺偏高岭土与石灰石粉对3D打印水泥基材料各向异性的影响,并通过微观角度解释这两种材料影响力学性能的机理。结果表明,偏高岭土最佳质量掺量为12%,最佳复掺质量比例m(偏高岭土)∶m(石灰石粉)为2∶1,3D打印水泥基材料掺入偏高岭土后流动度显著下降,复掺石灰石粉后流动度提高。3D打印试块各方向抗压强度的大小为X>Z>Y>筑模,不同方向抗折强度变化规律与抗压强度基本相同,具有各向异性特征。

关键词: 3D打印, 偏高岭土, 石灰石粉, 各向异性, 抗压强度, 抗折强度

Abstract: 3D printed cement-based materials decreases interstrip contact surface properties due to the stack molding process. Metakaolin can reduce porosity and improve mechanical property, but its high water demand cause water loss on the surface of printing strip, and the interlayer bonding performance decline. Limestone powder has a dilution effect, which can improve the high water demand of metakaolin. The influences of metakaolin and mixed limestone powder on anisotropic performance of 3D printed cement-based materials were studied, and the mechanism from a microscopic perspective was explained. The results show that the optimal mass content of metakaolin is 12%, and the optimal mixing mass ratio is m(metakaolin) ∶m(limestone powder) is 2 ∶1. After adding metakaolin, the fluidity of 3D printed cement-based materials decreases significantly, the fluidity of mixed limestone powder increases. The compressive strength of 3D printed test block is characterized by X>Z>Y>molding, and the variation pattern of flexural strength in different directions is basically the same as the compressive strength, with anisotropic characteristics.

Key words: 3D printing, metakaolin, limestone powder, anisotropy, compressive strength, flexural strength

中图分类号:

TU528

张钊睿, 罗素蓉, 林欣. 偏高岭土与石灰石粉增强3D打印水泥基材料的各向异性研究[J]. 硅酸盐通报, 2024, 43(5): 1651-1662.

ZHANG Zhaorui, LUO Surong, LIN Xin. Anisotropic of 3D Printed Cement-Based Materials Reinforced with Metakaolin and Limestone Powder[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(5): 1651-1662.

参考文献

[1] 张登辉. 3D打印纤维增强高分子复合材料的各向异性研究[D]. 南京: 南京航空航天大学, 2019.
ZHANG D H. Investigation on anisotropy of fiber reinforced polymer composites in 3D printing[D].Nanjing: Nanjing University of Aeronautics and Astronautics, 2019 (in Chinese).
[2] DE SCHUTTER G, LESAGE K, MECHTCHERINE V, et al. Vision of 3D printing with concrete: technical, economic and environmental potentials[J]. Cement and Concrete Research, 2018, 112: 25-36.
[3] ZHANG J C, WANG J L, DONG S F, et al. A review of the current progress and application of 3D printed concrete[J]. Composites Part A: Applied Science and Manufacturing, 2019, 125: 105533.
[4] PANDA B, RUAN S Q, UNLUER C, et al. Investigation of the properties of alkali-activated slag mixes involving the use of nanoclay and nucleation seeds for 3D printing[J]. Composites Part B: Engineering, 2020, 186: 107826.
[5] 余盈, 李犇, 许亮军, 等. 玄武岩纤维对3D打印再生水泥基材料性能的影响研究[J]. 混凝土与水泥制品, 2021(12): 45-49.
YU Y, LI B, XU L J, et al. Research on the influence of basalt fiber on the properties of 3D printed recycled cement-based materials[J]. China Concrete and Cement Products, 2021(12): 45-49 (in Chinese).
[6] 白刚, 王里, 王芳, 等. 3D打印UHPC的制备和力学性能试验研究[J]. 材料导报, 2021, 35(12): 12063-12069.
BAI G, WANG L, WANG F, et al. Investigation of the printability and mechanical properties of 3D printing UHPC[J]. Materials Reports, 2021, 35(12): 12063-12069 (in Chinese).
[7] ZHANG Y, ZHANG Y S, YANG L, et al. Hardened properties and durability of large-scale 3D printed cement-based materials[J]. Materials and Structures, 2021, 54(1): 45.
[8] 李维红, 王乾, 陈旭浩, 等. 纤维对3D打印水泥基材料力学性能的影响[J]. 实验力学, 2021, 36(4): 499-506.
LI W H, WANG Q, CHEN X H, et al. Effect of fiber on mechanical properties of 3D printing cement-based materials[J]. Journal of Experimental Mechanics, 2021, 36(4): 499-506 (in Chinese).
[9] ZHANG Y, ZHU Y M, REN Q, et al. Comparison of printability and mechanical properties of rigid and flexible fiber-reinforced 3D printed cement-based materials[J]. Construction and Building Materials, 2023, 400: 132750.
[10] 周港明, 杭美艳, 路兰, 等. 风积沙3D打印砂浆材料参数与各向异性研究[J]. 材料导报, 2022, 36(9): 109-113.
ZHOU G M, HANG M Y, LU L, et al. Material parameters and anisotropy research of 3D printing mortar after incorporating with aeolian sand[J]. Materials Reports, 2022, 36(9): 109-113 (in Chinese).
[11] PANDA B, TAN M J. Rheological behavior of high volume fly ash mixtures containing micro silica for digital construction application[J]. Materials Letters, 2019, 237: 348-351.
[12] LIU Z X, LI M Y, WENG Y W, et al. Mixture design approach to optimize the rheological properties of the material used in 3D cementitious material printing[J]. Construction and Building Materials, 2019, 198: 245-255.
[13] ZHANG Y, ZHANG Y S, LIU G J, et al. Fresh properties of a novel 3D printing concrete ink[J]. Construction and Building Materials, 2018, 174: 263-271.
[14] 李维红, 常西栋, 王乾, 等. 矿物掺合料对3D打印水泥基材料性能的影响[J]. 硅酸盐通报, 2020, 39(10): 3101-3107+3114.
LI W H, CHANG X D, WANG Q, et al. Effect of mineral admixture on properties of 3D printing cement-based materials[J]. Bulletin of the Chinese Ceramic Society, 2020, 39(10): 3101-3107+3114 (in Chinese).
[15] 杨钱荣, 赵宗志, 肖建庄, 等. 矿物掺合料与化学外加剂对3D打印砂浆性能的影响[J]. 建筑材料学报, 2021, 24(2): 412-418.
YANG Q R, ZHAO Z Z, XIAO J Z, et al. Effect of mineral admixtures and chemical admixtures on performance of 3D printing mortar[J]. Journal of Building Materials, 2021, 24(2): 412-418 (in Chinese).
[16] 赵宇, 武喜凯, 朱伶俐, 等. 玄武岩纤维对3D打印水泥基材料可打印性的影响[J]. 复合材料学报, 2022, 39(11): 5537-5547.
ZHAO Y, WU X K, ZHU L L, et al. Influence of basalt fiber on the printability of 3D printing cement-based materials[J]. Acta Materiae Compositae Sinica, 2022, 39(11): 5537-5547 (in Chinese).
[17] BONG S H, NEMATOLLAHI B, NAZARI A, et al. Fresh and hardened properties of 3D printable geopolymer cured in ambient temperature[C]//RILEM International Conference on Concrete and Digital Fabrication. Cham: Springer, 2019: 3-11.
[18] SUREHALI S, TRIPATHI A, NIMBALKAR A S, et al. Anisotropic chloride transport in 3D printed concrete and its dependence on layer height and interface types[J]. Additive Manufacturing, 2023, 62: 103405.
[19] 宁波, 刘苗苗, 王文飞. 偏高岭土混凝土的耐久性与水化特性分析[J]. 矿产综合利用, 2022(6): 49-54+60.
NING B, LIU M M, WANG W F. Analysis of durability and hydration characteristics of metakaolin concrete[J]. Multipurpose Utilization of Mineral Resources, 2022(6): 49-54+60 (in Chinese).
[20] 汪群. 3D打印混凝土拱桥结构关键技术研究[D]. 杭州: 浙江大学, 2019.
WANG Q. Research on the pivotal technology of 3D printed concrete arch bridge[D].Hangzhou: Zhejiang University, 2019 (in Chinese).
[21] 王里, 王伯林, 白刚, 等. 3D打印混凝土各向异性力学性能研究[J]. 实验力学, 2020, 35(2): 243-250.
WANG L, WANG B L, BAI G, et al. Experimental study on the mechanical anisotropy of 3D printed concrete[J]. Journal of Experimental Mechanics, 2020, 35(2): 243-250 (in Chinese).
[22] 邓雷, 温勇, 韩国旗, 等. 锂渣混凝土孔分形维数与气体渗透性能关系研究[J]. 混凝土, 2017(5): 68-71.
DENG L, WEN Y, HAN G Q, et al. Relationship between pore fractal dimension and air permeability of lithium slag concrete[J]. Concrete, 2017(5): 68-71 (in Chinese).
[23] 李永鑫, 陈益民, 贺行洋, 等. 粉煤灰-水泥浆体的孔体积分形维数及其与孔结构和强度的关系[J]. 硅酸盐学报, 2003, 31(8): 774-779.
LI Y X, CHEN Y M, HE X Y, et al. Pore volume fractal dimension of fly ash-cement paste and its relationship between the pore structure and strength[J]. Journal of the Chinese Ceramic Society, 2003, 31(8): 774-779 (in Chinese).