首页|MK增强BF-MPC力学性能

MK增强BF-MPC力学性能

扫码查看
原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
针对磷酸镁水泥(MPC)韧性低的问题,采用试验研究的方法制备不同掺量玄武岩纤维(BF)和偏高岭土(MK)的磷酸镁水泥砂浆试件测试其各龄期的强度,并通过扫描电镜(SEM)与X射线衍射(XRD)对试件进行微观分析.结果表明:随着偏高岭土掺量的增大,MPC砂浆的抗折强度与抗压强度相应提升;玄武岩纤维的掺入可明显提高MPC砂浆的抗折强度,对抗压强度的影响不显著.微观分析表明,偏高岭土和粉煤灰(FA)在MPC砂浆中参与反应生成二次水化产物,其有助于改善玄武岩纤维与基体间的粘接性能,提高MPC砂浆的力学性能.
Mechanical properties of MK strengthened BF-MPC
Aiming at the low toughness of magnesium phosphate cement(MPC),magnesium phosphate cement mortar with various proportions of basalt fiber(BF)and metakaolin(MK)were prepared through experimental method to test MPC′s strength at all ages,and microscopic analysis was carried out by scanning electron microscopy(SEM)and X ray diffraction(XRD).Experimental results reveal that the flexural strength and compressive strength of MPC mortar increase with the content of MK.The addition of BF can significantly enhance the flexural strength of MPC mortar,but the effect on the compressive strength is not significant.Microscopic analysis shows that MK and fly ash(FA)react within the MPC mortar and produce the secondary hydration products,enhancing the bonding between BF and MPC and improving MPC mortar′s mechanical properties.

magnesium phosphate cementbasalt fibermineral admixturecompressive strengthflexural strengthmicroscopic structurehydration productbonding property

金生吉、许立、杨宇豪、徐镜延

展开 >

沈阳工业大学 建筑与土木工程学院,辽宁 沈阳 110870

磷酸镁水泥 玄武岩纤维 矿物掺合料 抗压强度 抗折强度 微观结构 水化产物 粘接性能

国家自然科学基金辽宁省教育厅科技攻关计划重点项目

52179123LJKZZ20220025

2024

10.7688/j.issn.1000-1646.2024.03.14

沈阳工业大学学报
沈阳工业大学

沈阳工业大学学报

CSTPCD北大核心
影响因子：0.62
ISSN：1000-1646
年,卷(期)：2024.46(3)
  • 20