PROCESS, EQUIPMENT AND PERFORMANCE OF 3D PRINTING CONCRETE
Additive manufacturing has become a hot topic in architecture field in recent years.The process and materials of additive manufacturing technoldgy in construction are discussed in this paper.The two types of 3D printing processes (D-shape and Contour Crafting) are introduced and compared.The printing material can be various binders such as Portland cements, aluminate cements and alkali-activated materials.In this paper, Portland cement, silica fume, slag powder, admixtures and fiber were used to prepare 3D printing concrete.The printing of laboratory-scale specimens is achieved through a printing system with three-dimensional motion device, screw extruder and nozzle.Some testing methods for fresh and hardened properties of printing concrete were examined.Mortar fluidity suitable for 3D printing was studied and suitable mortar proportions were found.The fiber reinforced 3D printing concrete is anisotropic in terms of mechanical properties and the reason for this phenomenon was analyzed.
Additive manufacturing Printing concrete Performance testing
Qiang Wang Jianzhong Lai Saiyang Dong
School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
国际会议
福州
英文
423-431
2018-11-07（万方平台首次上网日期，不代表论文的发表时间）