An Economic Analysis on Automated Construction Safety by Rita Yi Man Li

Author:Rita Yi Man Li
Language: eng
Format: epub
Publisher: Springer Singapore, Singapore

6.3 Comparison Between Contour Crafting, Concrete Printing and D-Shape

The three major types of AM share some similarities. First, concrete printing and contour crafting are extrusion based. Concrete printing is realised with the help from cement-based paste, and contour crafting is made with cement mortar. Second, concrete printing needs to use the second material to support the created overhangs and other freeform features. The contour crafting and D-shape apply single material but use different methods to create different products (contour crafting does not need other materials to support created overhangs as it produces vertical elements largely in compression, while D-shape uses the unconsolidated material to support. Last but not least, these three kinds of AM share a common point, in that they are all layered process that build the product layer upon layer (Fig. 14) (Lee 2010).

Fig. 14Similarities between contour crafting, concrete printing, and D-shape (Lee 2010)

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