Over the last few years, 3D construction printing (3DCP), also known as additive manufacturing (AM) or rapid prototyping (RP), has increased in popularity in the construction industry. This method, which integrates automation in the building process, provides advantages over conventional construction techniques. These advantages include reduced cost, increased time efficiency, and safer construction process. This paper provides information regarding test methods and the properties of a prototype cementitious material designed for 3DCP. The tests include the determination of fresh properties (i.e., flow, unit weight, viscosity, and set times) and mechanical properties (i.e., compressive, tensile, and shear strengths). The potential of the material is demonstrated by 3D printing a structure 100 cm (40 in.) long and 30 cm (12 in.) high. The potential application of a “cured-on-demand” technique in 3DCP is also demonstrated.

Figure 3. Values of pm/pr when the statistical weight denoted by w is varied about its reference value w,. The assignment of w is shown for each curve.should generally be greater than one for monosubstituted vinyl polymers.Acknowledgment is made to the donors of the Petroleum Research Fund, administered by the American Chemical Society, for support of this research. References and Notes(1) Flory, P.

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