Engineers at Princeton have developed a cement composite inspired by nacre, or mother of pearl, making it 17 times more crack-resistant and 19 times more stretchable than standard cement. This bio-inspired composite, created by alternating layers of cement paste and polymer, could enhance the durability of various brittle ceramic materials. Experiments showed that beams with separated hexagonal tablets exhibited significant improvements in ductility and fracture toughness.
The researchers created beams with alternating layers of hexagonal cement tiles and thin polymer. Credit: Sameer Khan/Fotobuddy The experiments revealed that the failure of the reference beams was brittle — meaning that the beams broke suddenly and completely upon reaching their failure point, with no ductility. The beams with alternating layers, both grooved and non-grooved, demonstrated increased ductility and resistance to cracking.
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