摘要：对细菌纤维素增强水泥复合材料进行研究,探讨细菌纤维素含量、长度对水泥基复合材料抗折、抗压强度的影响以及细菌纤维素对水泥凝结时间和水化过程的影响。结果表明:细菌纤维素的加入能明显改善水泥基复合材料力学性能,细菌纤维素质量分数为0.02%是实验最佳掺量,材料抗折、抗压强度分别提高了20%和8%;过长细菌纤维素将导致分散不均,使浆体结构疏松;细菌纤维素对水泥浆体pH值和凝结时间无明显影响;细菌纤维素促进水化过程中CaO-SiO₂-H₂O凝胶生成。

关键词： 细菌纤维素;水泥基复合材料;力学性能

Abstract： The properties of bacterial cellulose reinforced cement composites were investigated. The analysis was focused on the influence of content and length of bacterial cellulose on strength， setting time and hydration of cement composites. The results showed that the flexural strength and compressive strength increased 20% and 8% respectively when the mass fraction of bacterial cellulose was 0.02%. There were less significant impact of bacterial cellulose on pH and setting time， but the bacterial cellulose accelerated the production of CaO-SiO₂-H₂O gel during hydration. 

Keywords：bacterial cellulose； cement composites； mechanical property