Investigation of Factors Influencing the Compressive Strength of Magnesium Phosphate Cement Mortars

LI Xiang; GUO Yilu; ZHANG Zili; MENG Xinmiao; JI Xiaodong

doi:10.3724/j.gyjzG24012606

Volume 54 Issue 9

Sep. 2024

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2024 > 54(9): 185-190

LI Xiang, GUO Yilu, ZHANG Zili, MENG Xinmiao, JI Xiaodong. Investigation of Factors Influencing the Compressive Strength of Magnesium Phosphate Cement Mortars[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(9): 185-190. doi: 10.3724/j.gyjzG24012606

Citation:

LI Xiang, GUO Yilu, ZHANG Zili, MENG Xinmiao, JI Xiaodong. Investigation of Factors Influencing the Compressive Strength of Magnesium Phosphate Cement Mortars[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(9): 185-190. doi: 10.3724/j.gyjzG24012606

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Investigation of Factors Influencing the Compressive Strength of Magnesium Phosphate Cement Mortars

doi: 10.3724/j.gyjzG24012606

1. School of Civil Engineering, Tongji University, Shanghai 200092, China;
2. Department of Civil Engineering, Beijing Forestry University, Beijing 100083, China

Received Date: 2024-01-26
Available Online: 2024-10-18

Abstract

Abstract

Magnesium phosphate cement, recognized for its environmental sustainability, boasts attributes such as rapid setting, high early strength, low shrinkage, exceptional bond performance, robust corrosion resistance, and resilience against wear and freezing. These distinctive properties position it as a promising material for diverse applications in civil engineering. This study aims to explore the influence of various factors, including phosphate type, fly ash content, water-to-binder ratio, and curing age, on the compressive strength of magnesium phosphate cement mortar (MPCM). Experimental findings revealed that in the absence of fly ash, the utilization of a 1∶1 mass ratio blend of two phosphate salts led to a notable enhancement in the early compressive strength of MPCM compared to the individual application of either ammonium dihydrogen phosphate or potassium dihydrogen phosphate. Moreover, the addition of 20% fly ash by mass of cementitious material enhanced the 1-day compressive strength of MPCM formulated with potassium dihydrogen phosphate or a combination of phosphate salts, although it might potentially compromise the strength at 28 days. Generally, the reduction in the water-to-binder ratio from 0.25 to 0.20 and the extension of curing age from 1 day to 28 days exhibited favorable impacts on the compressive strength of MPCM.
- magnesium phosphate cement mortar,
- compressive strength,
- phosphate type,
- fly ash content,
- water-cement ratio

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References(26)

References

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