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Inspired by beetles 3D printing slurry when cracks become more strong
Oct 09, 2018

3D printing of cement-based materials - such as cement, mortar and concrete - will allow engineers to better control the design and performance, but hindered the extension of their technical.

"3D printing has eliminated the need for each design to create mold, so we can achieve couldn't realize these unique properties of cement-based materials," Purdue materials engineering professor Jeffrey Youngblood said.

The team also use micro CT scan to a better understanding of the behavior of the hardening cement-based material 3D printing, and use the weak characteristics, such as found in the "interface" between printing layer pore area, which promoted the cracking.

The findings in the first session of RILEM recently concrete and digital manufacturing international conference.

By the group of 3D printing some bioactive slurry elements include the so-called "honeycomb", "soft" and "Bouligand" structure, which makes them once the hardening is able to design a specific performance.Bouligand buildings, for example, using the interface of weak material more resistant to cracking and supple building cement base element, like a spring, even though they are made of brittle materials.

The team now plans to explore other methods, can design cement base element to build a more flexible structure.

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