Investigation of a shotcrete accelerator for targeted control of material properties for 3D concrete printing injection method

被引：14

作者：

Pott, Ursula ^{[1
]}

Jakob, Cordula ^{[2
]}

Dorn, Tobias ^{[1
]}

Stephan, Dietmar ^{[1
]}

机构：

[1] Tech Univ Berlin, Chair Bldg Mat & Construct Chem, Dept Civil Engn, Gustav Meyer Allee 25, D-13355 Berlin, Germany

[2] Friedrich Alexander Univ, Dept Geog & Geosci, Geozentrum Nordbayern, D-91054 Erlangen, Germany

来源：

CEMENT AND CONCRETE RESEARCH | 2023年 / 173卷

关键词：

3D concrete printing injection method; Suitability study; Shotcrete accelerator; Physical material behaviour; Cement hydration; C-S-H; EARLY AGE HYDRATION; PORTLAND-CEMENT; ALKALI-FREE; TRICALCIUM SILICATE; HEAT-FLOW; ALITE; PASTES; OPC; MECHANISMS;

D O I：

10.1016/j.cemconres.2023.107264

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The efficiency of 3D concrete printing significantly depends on the mortar performance, which can be improved and controlled by adding a shotcrete accelerator. This targeted control is implemented by adding a small accelerator dose to an injection nozzle before extrusion. In this article, a study is conducted on the suitability of the material for this application. For this purpose, a shotcrete accelerated printable mortar is investigated. Comparing physical and physicochemical results leads to an in-depth understanding of the chemical processes and their effects on physical behaviour, which enables a positive assessment of the accelerator for 3D concrete printing injection method.

引用

页数：17

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