Abstract：This study investigated the effects of various fiber types—single added polyvinyl alcohol (PVA), polyethylene (PE), polypropylene (PP), basalt fiber (BF), and carbon fiber (CF)—on the mechanical properties of basic magnesium sulfate cement-engineered cementitious composites (BMSC-ECC). Microscopic analysis (SEM) was employed to systematically elucidate the mechanistic roles of each fiber type in BMSC-ECC. Results demonstrated that fiber incorporation significantly enhanced the flexural strength of BMSC-ECC, with PVA fibers showing optimal reinforcement effects: their 7-day and 28-day flexural strengths increased by 74.9% and 85.2% respectively compared to non-reinforced counterparts. However, the compressive strength of the matrix decreased due to fiber introduction. In four-point bending tests, both PVA and PE fiber specimens exhibited pronounced strain hardening and multi-cracking characteristics. Notably, PVA fiber specimens demonstrated superior bending strength and toughness index compared to PE fibers, achieving a 54.3% improvement over the baseline group. The introduction of PVA fibers notably elevated the overall strength and toughness of BMSC-ECC materials
李培莉, 徐 迅, 陶 璇, 杨肖晨, 李莹江. 纤维种类对碱式硫酸镁水泥基ECC力学性能影响的研究[J]. 水泥杂志, 2026, 0(8): 57-.
LI Peili, et al. Research on influence of fiber types on mechanical properties of basic magnesium sulfate cement-based ECC with cement matrix. Journal of Cement, 2026, 0(8): 57-.
2026, Vol. 0 
