【摘要】 研究了不同掺入工艺下多层石墨烯和钢纤维在水泥基中的分散效果,并对单掺、复掺两种填料下砂浆的抗压、抗折强度和压折比进行了试验研究。结果表明:采用干拌法分散钢纤维和高速离心法分散多层石墨烯的工艺更佳;钢纤维和多层石墨烯的协同作用提高了高掺量多层石墨烯砂浆的抗压和抗折强度,其中复掺钢纤维和多层石墨烯砂浆的28 d抗压强度比单掺多层石墨烯提高32.82%～43.96%,抗折强度提高18.33%～31.08%,且提高程度随着钢纤维掺量的增加而上升。更多还原

【Abstract】 The dispersion effects of multi-layer graphene and steel fibers in cement matrix under different mixing processes were studied. The compressive strength, flexural strength and compressive-flexural ratio of mortar with single and compound fillers were tested. The results show that the process of dispersing multi-layer graphene by dry mixing and high-speed centrifugation is better. The synergistic effect of steel fiber and multi-layer graphene improves the compressive and flexural strength of high content multi-layer graphene mortar, in which the 28 d compressive strength of the mortar mixed with steel fiber and mult-ilayer graphene is 32.82%～43.96% higher than that of mult-ilayer graphene alone, and the flexural strength is 18.33% ～31.08% higher than that of mult-ilayer graphene alone, and the degree of improvement increases with the increase of steel fiber content.更多还原