Plastic shrinkage and cracking of 3D printed mortar with recycled sand

This study focused on the plastic shrinkage and cracking of 3D printed mortar mixed with recycled sand as fine aggregates. The test methods for free and restrained plastic shrinkage were designed and improved to simulate the plastic shrinkage of 3D printed mortar. The shrinkage and the development of cracks under constraints were measured by image processing, and the effect of recycled sand was evaluated. 3D printed natural sand mortar and 3D...