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

被引：9
|
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
收藏
页数：17
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