EXPERIMENTAL STUDY ON PREPARATION AND MECHANICAL PROPERTIES OF MODIFIED MAGNESIUM PHOSPHATE CEMENT

BAI Weiliang; LI Ming; XIE Qi

doi:10.13204/j.gyjzG20101904

Volume 51 Issue 4

Aug. 2021

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BAI Weiliang, LI Ming, XIE Qi. EXPERIMENTAL STUDY ON PREPARATION AND MECHANICAL PROPERTIES OF MODIFIED MAGNESIUM PHOSPHATE CEMENT[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(4): 161-166,203. doi: 10.13204/j.gyjzG20101904

Citation:

BAI Weiliang, LI Ming, XIE Qi. EXPERIMENTAL STUDY ON PREPARATION AND MECHANICAL PROPERTIES OF MODIFIED MAGNESIUM PHOSPHATE CEMENT[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(4): 161-166,203. doi: 10.13204/j.gyjzG20101904

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EXPERIMENTAL STUDY ON PREPARATION AND MECHANICAL PROPERTIES OF MODIFIED MAGNESIUM PHOSPHATE CEMENT

doi: 10.13204/j.gyjzG20101904

BAI Weiliang^1,2,
LI Ming³,
XIE Qi^{2
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1. China Electronics Engineering Design Institute Co., Ltd., Beijing 100142, China;
2. C+E Center for Engineering Research Test and Appraisal Co., Ltd., Beijing 100142, China;
3. School of Civil Engineering, Tianjin University, Tianjin 300072, China

Received Date: 2020-10-19
Available Online: 2021-08-19

Abstract

Abstract

In order to solve the problems of fast setting time and poor operability of magnesium phosphate cement, metakaolin and hollow glass microbeads were used to modify the cement, and magnesium phosphate cement with properties of reinforcement material was prepared. The influence of metakaolin and hollow glass microbeads on cement strength, setting time and working performance were studied. The results showed that when the mass ratio of magnesium oxide and potassium dihydrogen phosphate was 1-1.5, the setting time gradually lengthens and the strength declined as the content of metakaolin increased. The content of metakaolin should be 0.5-0.8. With the increase of the content of hollow glass microbeads, the setting time tended to prolong, the fluidity increased significantly and the strength decreased slightly. The optimal content of hollow glass microbeads was 0.08-0.12. The magnesium phosphate cement prepared had controllable setting time, reliable strength, and low apparent density, which could meet the requirements of reinforcement materials.
- magnesium phosphate cement,
- metakaolin,
- hollow glass-bead,
- workability,
- mechanical properties

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References(21)

References

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