Flexural and Tensile Properties of Continuous Fiber-Reinforced Mortar and Its 3D Printing Verification
WANG Kaiqiang
LING Chaowei
LI Di
HU Chunyou
ZHANG Sida
Abstract：The effects of different fiber types,fiber impregnation treatments,and fiber reinforcement ratios on the flexural tensile strength of cast mortar were compared.Fibers with superior performance and good compatibility for 3D printing were selected and validated through printing tests.The results indicate that ultra-high molecular weight polyethylene(UHMWPE)fibers provide the most significant improvement in the flexural tensile strength of mortar.Mineral fibers,due to their poor abrasion resistance,offer limited enhancement and even reduce the flexural strength of mortar;however,after impregnation treatment,they significantly improve the flexural tensile strength.Impregnated carbon fibers outperform UHMWPE fibers in enhancing the flexural tensile strength.As the reinforcement ratio of UHMWPE fibers increases,the flexural strength and deflection of mortar are substantially improved.The failure mode of 3D-printed flexural specimens with a 0.3%reinforcement ratio is characterized as under-reinforced failure,exhibiting multiple cracking and high ductility.Appropriately increasing the reinforcement ratio helps restrain crack propagation.
Keywords：continuous fibercement-based materialfiber reinforcementflexural tensile performance3D printing
Publication Date：2025-11-30
Online Publishing Date：2025-12-09(First online date of this platform, not the publication date of the document)
Pages：8( 1130-1137 )