What question did this study set out to answer?

To establish a rheological framework for designing printable strain-hardening cementitious composites by linking flow parameters to pumpability, buildability, and mechanical performance.

March 6, 2019Materials & DesignOpen Access

An approach to develop printable strain hardening cementitious composites

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To establish a rheological framework for designing printable strain-hardening cementitious composites by linking flow parameters to pumpability, buildability, and mechanical performance.
Evaluated two baseline composite mixtures while varying water-to-solid ratios, fiber volume percentages, and chemical admixtures using a ram extruder and the Benbow-Bridgwater equation.
Correlated initial bulk and shear yield stress measurements with experimental printing performance to predict structural layer buildability.
Characterized hardened mechanical behavior using four-point bending, uniaxial tensile, and compressive strength tests to verify strain-hardening capability.
Bulk yield stress successfully predicted the buildability and maximum number of printable layers supported by the cementitious mixtures.
Shear yield stress reliably identified the operational threshold governing mix pumpability during additive manufacturing.
Mechanical testing confirmed that the formulated composite mixtures retained strain-hardening behavior alongside printable rheological properties.

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Implication

Experimental study demonstrates rheological modeling for printable cementitious composites, indicating bulk and shear yield stress predict buildability and pumpability.

Cite This Study

Figueiredo et al. (2019) studied this question.

synapsesocial.com/papers/6a04dec32d8fa76bdac90cb2 https://doi.org/10.1016/j.matdes.2019.107651

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Implication

Experimental study demonstrates rheological modeling for printable cementitious composites, indicating bulk and shear yield stress predict buildability and pumpability.

An approach to develop printable strain hardening cementitious composites

Key Points

Discussion

Implication

Cite This Study

An approach to develop printable strain hardening cementitious composites

Key Points

Discussion

Implication

Cite This Study

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