Dynamic Properties and Fractal Characteristics of 3D Printed Cement Mortar in SHPB Test.

Comparing with the traditional construction process, 3D printing technology used in construction offers many advantages due to the elimination of formwork. Currently, 3D printing technology used in the construction field is widely studied, however, limited studies are available on the dynamic properties of 3D printed materials. In this study, the effects of sand to binder ratios and printing directions on the fractal characteristics, dynamic compressive strength, and energy dissipation density of 3D printed cement mortar (3DPCM) are explored.

Improvement and Soil Consistency of Sand-Clay Mixtures Treated with Enzymatic-Induced Carbonate Precipitation.

Recently, microbially induced carbonate precipitation (MICP) has been studied as an alternative for the improvement of sand-clay mixtures. However, the cementing uniformity of MICP-treated sand-clay mixtures cannot be guaranteed. In this present study, enzymatic-induced carbonate precipitation (EICP) was used to deal with it.