Underwater 3D printing of cement-based mortar

被引：57

作者：

Mazhoud, Brahim ^{[1
]}

Perrot, Arnaud ^{[1
]}

Picandet, Vincent ^{[1
]}

Rangeard, Damien ^{[2
]}

Courteille, Eric ^{[2
]}

机构：

[1] Univ Bretagne Sud, UMR CNRS 6027, IRDL, F-56100 Lorient, France

[2] INSA Rennes EA 3913, LGCGM, F-35000 Rennes, France

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 214卷

关键词：

Cement-based material; Rheology; Anti-washout admixture; 3D printing; YIELD-STRESS; MIXTURE COMPOSITION; CONCRETE; CONSTRUCTION; THIXOTROPY; MODEL; VALIDATION; STRENGTH; YODEL; SCC;

D O I：

10.1016/j.conbuildmat.2019.04.134

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Nowadays, the development of renewable marine energies and needs for coastal protection to face global warming issues goes simultaneously with the fast development of digitally based construction methods such as concrete 3D printing. This creates the conditions to change the coastal and off-shore construction methods. Therefore in this study, we assess the possibility to design an underwater 3D printing materials. This possibility needs to develop cement-based materials that are simultaneously printable (pumpability, fast structuring) and also resistant to water washing out. After a mix design protocol that complies with the rheological requirements of the concrete and its water anti-washout properties (through permeability measurements), 3D printed samples has been fabricated in air and underwater. Then, the compressive strength of hardened printed mortar has been measured in order to validate the concept of the process. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：458 / 467

页数：10

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