Shaping of geopolymer composites by 3D printing

被引：39

作者：

Archez, J. ^{[1
,2
,3
]}

Texier-Mandoki, N. ^{[2
]}

Bourbon, X. ^{[2
]}

Caron, J. F. ^{[3
]}

Rossignol, S. ^{[1
]}

机构：

[1] IRCER Inst Rech Sur Ceram UMR7315, 12 Rue Atlantis, F-87068 Limoges, France

[2] Agence Natl Gest Dechets Radioactifs Andra, 1-7 Rue Jean Monnet, F-92298 Chatenay Malabry, France

[3] UPE, Ecole Ponts, UMR 8205, CNRS,Lab Navier, Champs Sur Marne, France

来源：

JOURNAL OF BUILDING ENGINEERING | 2021年 / 34卷

关键词：

Geopolymer; Composite; Additive manufacturing; Slump; Microstructure; Flexural strength; HARDENED PROPERTIES; MECHANICAL PERFORMANCE; CONCRETE; STRENGTH; EXTRUSION; WOLLASTONITE; METAKAOLIN; RHEOLOGY; BINDER; FRESH;

D O I：

10.1016/j.jobe.2020.101894

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This work aims to shape a hollow cylinder with a geopolymer and an additive manufacturing process (3D printing) without organic additives. The formulation of a geopolymer composite using only mineral parts is proposed and the parameters of the 3D printing process were optimized. The mechanical properties, the microstructure, and the adhesion of the layers of the printing material were analysed and compared with the literature. The results showed that the geopolymer composite could be printed with the addition of small ratios of wollastonite, glass fibers, or non-reactive aluminosilicate and by modifying the printing speed. The stacking layers exhibited a good adhesion between them, avoiding the so-called "cold joints" effect, and the fibers are flow-oriented during the process. Some hollow cylinders are successfully printed with a flexural strength of 15 MPa.

引用

页数：9

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