| 马国伟,柴艳龙,王里*,刘淼.3D打印陶砂轻质混凝土的制备与力学性能测试[J].实验力学,2020,35(1):58~66 |
| 3D打印陶砂轻质混凝土的制备与力学性能测试 |
| Preparation and mechanical properties testing of 3D printed ceramic sand lightweight concrete |
| 投稿时间：2018-08-06 修订日期：2018-11-18 |
| DOI：10.7520/1001-4888-18-180 |
| 中文关键词: 3D打印 陶砂混凝土 打印路径 力学性能 |
| 英文关键词:3D printing ceramic concrete printing path mechanical properties |
| 基金项目:国家自然科学基金重大仪器专项(No. 51627812)，国家自然科学基金青年科学基金项目(51808183) |
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| 中文摘要: |
| 混凝土3D打印在土木建筑等领域取得了迅速的发展和应用，利用陶砂制备3D打印混凝土材料有利于提升打印结构的轻量化。本文首先研究了陶砂的物理性质，配制了5种不同陶砂掺量的混凝土，结合流动性与早期刚度测试结果，确定了满足挤出型3D打印的配合比。其次借助自行研发的3D打印机制备了4种不同路径的立方体试件和棱柱体试件，评估了打印路径对3D打印结构抗压、抗弯和劈裂力学性能的影响。试验结果为拓展陶砂材料的资源化利用，3D打印材料的设计与工程应用提供了试验数据和参考。 |
| 英文摘要: |
| 3D printed concrete has achieved rapid development and application in the field of civil engineering. Adopting ceramic sand to prepare concrete materials by 3D printing greatly contributes to the lightweight of 3D printed structures. This work firstly studies the physical properties of ceramic sand. Then five kinds of concretes with different ceramic/silica sand ratios are prepared. The optimal mixing proportion comparative to the 3D printing is determined according to the fluidity and early stiffness tests. Thereafter, three kinds of cubic and prism specimens with different printing paths are manufactured by self-developed 3D printer, and the influences of the printing paths on the compressive, flexural and splitting mechanical properties of the 3D printed structure are evaluated. The experimental results provide the data and reference for the resource utilization of ceramic sand materials, design of 3D printed structures and the practical engineering applications of 3D printing. |
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