摘要
选用长度分别为13 mm、9 mm的钢纤维(SF)、聚丙烯纤维(PF)进行混杂,对7 d龄期的不同体积掺量和混杂比的钢-聚丙烯纤维水泥基复合材料(H-SPCC)进行抗压和抗折试验。试验结果:混掺钢纤维聚丙烯纤维(H-SP)对改善水泥基复合材料力学性能效果显著,且体积掺量和混杂比对H-SPCC的力学性能的影响较为显著。当钢纤维体积分数为1%,体积混杂比为3∶1时,对抗压性能增强效果最佳,抗压强度为38.07 MPa,相比未掺H-SP纤维提高了58.9%;当钢纤维体积分数为1%,体积混杂比为5∶1时,对抗折性能增强效果最佳,抗折强度为6.80 MPa,相比未掺H-SP纤维提高了26.4%。
The steel fibres(SFs)in the length of 13mm and 9mm are chosen to mix with the PF.The polypropylene-fiber-cement-based compound material(H-SPCC)at seven days of age with different volume mixture and mixture ratio were subjected to compression test and bending test.It was found that the hybrid steel fiber polypopylene(H-SP)is obvious in promoting the mechanical properties of the cement-based composites,and the volume content and mixing ratio have a significant effect on the mechanical properties of H-SPCC.When the volume fraction of steel fiber is 1%and the volume mixing ratio is 3:1,the compressive strength enhancement effect is the best,with the compressive strength at 38.07 MPa,which is 58.9%higher than that of undoped H-SP fiber;When the volume fraction of the steel fiber is 1%and the volume mixing ratio is 5:1,the flexural performance enhancement effect is the best,with the flexural strength being 6.80 MPa,which is 26.4%higher than that of the undoped H-SP fiber.
作者
赵瑞刚
傅思静
徐海燕
陶静
张黎
ZHAO Ruigang;FU Sijing;XU Haiyan;TAO Jing;ZHANG Li(School of Architecture and Engineering,Neijiang Teachers College, Neijiang, Sichuan 641100,China)
出处
《内江师范学院学报》
2020年第10期76-81,共6页
Journal of Neijiang Normal University
基金
内江师范学院大学生创新创业项目(X2019144)。
关键词
混杂纤维
水泥基复合材料
力学性能
体积掺量
混杂比
hybrid fibers
cement-based composites
mechanical properties
volume content
hybrid ratio
