Open AccessStudy on improving interface bonding performance of magnesium potassium phosphate cement mortar
Author(s) -
J. Zhang,
Yao Ji,
Zhan Zhan Xu,
QiKun Xue,
Yilong Zhou,
Chenhua Jin
Publication year - 2021
Publication title -
materiales de construcción
Language(s) - English
Resource type - Journals
eISSN - 1988-3226
pISSN - 0465-2746
DOI - 10.3989/mc.2021.00421
Subject(s) - mortar , materials science , silica fume , composite material , flexural strength , cement , magnesium , potassium phosphate , bending , metallurgy , chemistry , chromatography
To enhance the interfacial bonding performance between magnesium potassium phosphate cement (MKPC) repair mortar and matrix concrete, in this study, MKPC modified mortar was used as the repair material to splice long prismatic test pieces. The four-point bending test was used to determine the flexural bearing capacity of the long prism, and the influence of changing the interface conditions and the modifying the MKPC repair mortar on the improvement of the basic performance of the splicing component is investigated.The research results show that, when the matrix concrete section is in a natural state, applying silica-fume modified MKPC interface agents on the interface with a repair thickness of 3 cm can improve the interface bonding performance. Furthermore, the working performance and mechanical properties of the MKPC repair mortar modified using nickel-iron slag and steel fibers have been significantly improved.