Bulletin of the Chinese Ceramic Society, Volume. 42, Issue 4, 1174(2023)

Effect of Fiber Surface Modification on Mechanical Properties of EGC

CHEN Ya1, WAN Xiaomei1,2, CUI Yunzheng1, and LI Hui1
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • show less

    The synthesized nano-SiO2 was attached to the surface of polyvinyl alcohol (PVA) fiber and polyethylene (PE) fiber by chemical deposition method, and the distribution of SiO2 on the modified fiber surface was observed by scanning electron microscope (SEM). The strength and toughness of engineering geopolymer composites (EGC) were compared by compressive tests, flexural tests and uniaxial tensile tests before and after the surface modification of fibers. And the reason for the change of macro-mechanical properties was verified by single fiber pull-out tests from the microscopic mechanical point of view. The results show that the compressive and flexural strength of PVA fiber EGC specimen after hydrophobic modification of SiO2 decrease and those properties of PE fiber EGC specimen after hydrophilic modification of SiO2 improve. In the process of uniaxial tension, most EGC specimens show different degrees of tensile strain hardening, and it is more obvious after the fibers are modified. The results of single fiber pull-out tests show that the EGC specimens have a more obvious slip hardening stage and the interface property of fiber-matrix is improved after fiber surface modification.


    Get Citation

    Copy Citation Text

    CHEN Ya, WAN Xiaomei, CUI Yunzheng, LI Hui. Effect of Fiber Surface Modification on Mechanical Properties of EGC[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(4): 1174

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information


    Received: Dec. 1, 2022

    Accepted: --

    Published Online: Jun. 12, 2023

    The Author Email: