Portland 3D Printing of Portland Cement Pastes with Additions of Kaolin, Superplastificant, and Calcium Carbonate

被引：0
|
作者：
Vergara, Luis A. [1 ]
Colorado, Henry A. [1 ,2 ]
机构：
[1] Univ Antioquia UdeA, CCComposites Lab, Calle 70 52-21, Medellin, Colombia
[2] Univ Antioquia, Fac Ingn, Bloque 20,Calle 67 53-108, Medellin, Colombia
来源：
TMS 2020 149TH ANNUAL MEETING & EXHIBITION SUPPLEMENTAL PROCEEDINGS | 2020年
关键词：
3D printing; Additive manufacturing; Portland cement; Mortar; Kaolin; direct ink writing; CONCRETE; PERFORMANCE; DESIGN;
D O I：
10.1007/978-3-030-36296-6_20
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The main goal in this investigation is to develop inexpensive formulations of Portland cement pastes for additive manufacturing using the direct ink writing technique. Kaolin, a superplastificant, and calcium carbonate additions were used as additives and modifiers of the printing material. A total of 3 formulations were developed with acceptable shape stability and finishing of the manufactured parts. Cylindrical samples of 17 mm in diameter and 26 mm of height were built in order to be tested in compression tests. The microstructure was characterized with scanning electron microscopy, density, and compression tests. Results showed one formulation to be the best one, which was associated mainly to an optimal kaolin content as rheology regulator.
引用
收藏
页码：217 / 226
页数：10
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