3D Printing of cement composites
3D Printing of cement composites
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DOI：
10.1179/174367509x12472364600878
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发表时间：
2010-05-01
影响因子：
2.2
通讯作者：
Farahi, E.
中科院分区：
文献类型：
--
作者：
Gibbons, G. J.;Williams, R.;Farahi, E.
本研究的目的是研究使用 3D 打印 (3DP) 技术直接在快速硬化波特兰水泥 (RHPC) 中生成三维 (3D) 结构的可行性。 3DP 是一种增材层制造 (ALM) 流程，可直接从 CAD 以分层方式生成零件。使用 3:97 w/w 的聚乙烯醇/ RHPC 比例成功打印了三维结构，打印分辨率优于 1 毫米。测试部件展示了使用简单模具工具无法制造的特征的制造，包括离轴孔、悬伸/底切等。构建后在室温下浸入水中 1 天而硬化的样品提供高达 08 +/- 01 MPa 的断裂模量 (MOR) 值，并且在室温下浸入水中 26 天后，提供的 MOR 值为 2.2 +/- 0.2 MPa，类似于 3DP (1-3 MPa) 中更常用的基于硅镁石的材料。通过水浸后固化重构了结构，消除了 ALM 工艺中典型的分层，并填充了孔隙。
The aims of this study were to investigate the feasibility of generating three-dimensional (3D) structures directly in rapid hardening Portland cement (RHPC) using 3D printing (3DP) technology. 3DP is an additive layer manufacturing (ALM) process that generates parts directly from CAD in a layer-wise manner. Three-dimensional structures were successfully printed using a polyvinylalcohol/ RHPC ratio of 3 : 97 w/w, with print resolutions of better than 1 mm. The test components demonstrated the manufacture of features, including off-axis holes, overhangs/undercuts, etc. that would not be manufacturable using simple mould tools. Samples hardened by 1 day post-build immersion in water at RT offered modulus of rupture (MOR) values of up to 08 +/- 01 MPa, and, after 26 days immersion in water at RT, offered MOR values of 2.2 +/- 0.2 MPa, similar to bassanite based materials more typically used in 3DP (1-3 MPa). Post-curing by water immersion restructured the structure, removing the layering typical of ALM processes, and infilling porosity.