Influence of Metakaolin on Properties of Magnesium Potassium Phosphate Cement with High Water-to-Solid Ratio
Publication: Journal of Materials in Civil Engineering
Volume 34, Issue 9
Abstract
In this paper, the effect of metakaolin on the performance of magnesium potassium phosphate cement (MKPC) with a high water-to-solid (w/s) ratio of 0.375 was studied. MKPC was prepared by substituting metakaolin for varying amounts of magnesia. The results showed that the increase of metakaolin led to a decrease in the fluidity of the fresh MKPC slurry. Additionally, the presence of metakaolin reduced the maximum temperature of the second peak in the MKPC hydration reaction and delayed its appearance. This is because of the amount of magnesia as an effective alkaline component decreased. Metakaolin improved the compressive strength of MKPC by reducing the porosity and forming new hydration products. Moreover, it was found that the compressive strength of MKPC with 30% metakaolin exhibited the highest at 20.36 MPa at 28 days and showed a downward trend when metakaolin exceeded 30%. Metakaolin owns the pozzolanic effect as well as the filling effect in the MKPC system of a high w/s ratio, which is the reason for the improvement in compressive strength and reduction of chloride diffusion. This work provides some fundamental information for understanding the high w/s ratio MKPC modified by metakaolin, which helps to promote its application in the field of anticorrosion coatings and waste stabilization/solidification binders.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This work was supported by The Science and Technology Development Fund, Macau SAR (File No. FDCT-0138/2020/A3); National Natural Science Foundation of China, Excellent Young Scientists Fund (HK&Macau) (File No. 5212290021), and Shenzhen-Hong Kong-Macau science and technology plan (c) (File No. SGDX2020110309360).
References
Chang, Y., C. Shi, N. Yang, and J. Yang. 2013. “Effect of fineness of magnesium oxide on properties of magnesium potassium phosphate cement.” J. Chin. Ceram. Soc. 41 (4): 492–499. https://doi.org/10.7521/j.issn.0454-5648.2013.04.11.
Chinese Standard. 2006. Technical specification for anti-corrosion of concrete structures of highway engineering. JTG/J B07-01 2006. Beijing: Ministry of Communications of the People’s Republic of China.
Chinese Standard. 2012. Methods for testing uniformity of concrete admixture. GB/T 8077-2012. Beijing: Standardization Administration of the People’s Republic of China.
Du, Y., P. Gao, J. Yang, and F. Shi. 2020. “Research on the chloride ion penetration resistance of magnesium phosphate cement (MPC) material as coating for reinforced concrete structures.” Coatings 10 (12): 1145. https://doi.org/10.3390/coatings10121145.
Haque, M. A., and B. Chen. 2019. “Research progresses on magnesium phosphate cement: A review.” Constr. Build. Mater. 211 (Jun): 885–898. https://doi.org/10.1016/j.conbuildmat.2019.03.304.
Jeon, I. K., A. Qudoos, and H. G. Kim. 2021. “Influence of carbonation curing on hydration and microstructure of magnesium potassium phosphate cement concrete.” J. Build. Eng. 38 (Jun): 102203. https://doi.org/10.1016/j.jobe.2021.102203.
Katsiki, A., T. Hertel, T. Tysmans, Y. Pontikes, and H. Rahier. 2019. “Metakaolinite phosphate cementitious matrix: Inorganic polymer obtained by acidic activation.” Materials 12 (3): 442. https://doi.org/10.3390/ma12030442.
Le Rouzic, M., T. Chaussadent, L. Stefan, and M. Saillio. 2017. “On the influence of Mg/P ratio on the properties and durability of magnesium potassium phosphate cement pastes.” Cem. Concr. Res. 96 (Jun): 27–41. https://doi.org/10.1016/j.cemconres.2017.02.033.
Li, Y., J. Sun, and B. Chen. 2014. “Experimental study of magnesia and M/P ratio influencing properties of magnesium phosphate cement.” Constr. Build. Mater. 65 (Aug): 177–183. https://doi.org/10.1016/j.conbuildmat.2014.04.136.
Lu, X., and B. Chen. 2016. “Experimental study of magnesium phosphate cements modified by metakaolin.” Constr. Build. Mater. 123 (Oct): 719–726. https://doi.org/10.1016/j.conbuildmat.2016.07.092.
Lv, L., P. Huang, L. Mo, M. Deng, J. Qian, and A. Wang. 2019. “Properties of magnesium potassium phosphate cement pastes exposed to water curing: A comparison study on the influences of fly ash and metakaolin.” Constr. Build. Mater. 203 (Apr): 589–600. https://doi.org/10.1016/j.conbuildmat.2019.01.134.
Ma, H., B. Xu, and Z. Li. 2014. “Magnesium potassium phosphate cement paste: Degree of reaction, porosity and pore structure.” Cem. Concr. Res. 65 (Nov): 96–104. https://doi.org/10.1016/j.cemconres.2014.07.012.
Mo, L., L. Lv, M. Deng, and J. Qian. 2018. “Influence of fly ash and metakaolin on the microstructure and compressive strength of magnesium potassium phosphate cement paste.” Cem. Concr. Res. 111 (Sep): 116–129. https://doi.org/10.1016/j.cemconres.2018.06.003.
Nasab, G. M., F. Golestanifard, and K. J. D. MacKenzie. 2014. “The effect of the ratio in the structural modification of metakaolin-based geopolymers studied by XRD, FTIR and MAS-NMR.” J. Ceram. Sci. Technol. 5 (3): 185–192. https://doi.org/10.4416/JCST2014-00007.
Qin, J., J. Qian, X. Dai, C. You, H. Ma, and Z. Li. 2021. “Effect of water content on microstructure and properties of magnesium potassium phosphate cement pastes with different magnesia-to-phosphate ratios.” J. Am. Ceram. Soc. 104 (6): 2799–2819. https://doi.org/10.1111/jace.17695.
Qin, Z., C. Ma, Z. Zheng, G. Long, and B. Chen. 2020. “Effects of metakaolin on properties and microstructure of magnesium phosphate cement.” Constr. Build. Mater. 234 (Feb): 117353. https://doi.org/10.1016/j.conbuildmat.2019.117353.
Qin, Z., S. Zhou, C. Ma, G. Long, Y. Xie, and B. Chen. 2019. “Roles of metakaolin in magnesium phosphate cement: Effect of the replacement ratio of magnesia by metakaolin with different particle sizes.” Constr. Build. Mater. 227 (Dec): 116675. https://doi.org/10.1016/j.conbuildmat.2019.116675.
Rovnaník, P. 2010. “Effect of curing temperature on the development of hard structure of metakaolin-based geopolymer.” Constr. Build. Mater. 24 (7): 1176–1183. https://doi.org/10.1016/j.conbuildmat.2009.12.023.
Shi, Y., B. Chen, and M. R. Ahmad. 2019. “Effects of alumina as an effective constituent of metakaolin on properties of magnesium phosphate cements.” J. Mater. Civ. Eng. 31 (8): 04019147. https://doi.org/10.1061/(ASCE)MT.1943-5533.0002779.
Torras, J., I. Buj, M. Rovira, and J. de Pablo. 2011. “Semi-dynamic leaching tests of nickel containing wastes stabilized/solidified with magnesium potassium phosphate cements.” J. Hazard. Mater. 186 (2–3): 1954–1960. https://doi.org/10.1016/j.jhazmat.2010.12.093.
Vijan, C. A., and A. Badanoiu. 2020. “The influence of potassium phosphate and fly ash addition on the setting time and mechanical strengths of magnesium phosphate cements.” U.P.B Sci. Bull. Ser. B 82 (3): 21–32.
Wang, D., J. Zhu, and R. Wang. 2021a. “Assessment of magnesium potassium phosphate cement for waste sludge solidification: Macro-and micro-analysis.” J. Cleaner Prod. 294 (Apr): 126365. https://doi.org/10.1016/j.jclepro.2021.126365.
Wang, Q., C. Yu, J. Yang, L. Chong, X. Xu, and Q. Wu. 2019. “Influence of nickel slag powders on properties of magnesium potassium phosphate cement paste.” Constr. Build. Mater. 205 (Apr): 668–678. https://doi.org/10.1016/j.conbuildmat.2019.02.014.
Wang, Z., B. Wei, X. Wu, H. Zhu, Q. Wang, Z. Xiong, and Z. Ding. 2021b. “Effects of dry-wet cycles on mechanical and leaching characteristics of magnesium phosphate cement-solidified Zn-contaminated soils.” Environ. Sci. Pollut. Res. 28 (14): 18111–18119. https://doi.org/10.1007/s11356-020-11977-5.
Xu, B., B. Lothenbach, and H. Ma. 2018. “Properties of fly ash blended magnesium potassium phosphate mortars: Effect of the ratio between fly ash and magnesia.” Cem. Concr. Compos. 90 (Jul): 169–177. https://doi.org/10.1016/j.cemconcomp.2018.04.002.
Xu, B., B. Lothenbach, and F. Winnefeld. 2020. “Influence of wollastonite on hydration and properties of magnesium potassium phosphate cements.” Cem. Concr. Res. 131 (May): 106012. https://doi.org/10.1016/j.cemconres.2020.106012.
Xu, B., H. Ma, H. Shao, Z. Li, and B. Lothenbach. 2017. “Influence of fly ash on compressive strength and micro-characteristics of magnesium potassium phosphate cement mortars.” Cem. Concr. Res. 99 (Sep): 86–94. https://doi.org/10.1016/j.cemconres.2017.05.008.
Xu, B., F. Winnefeld, J. Kaufmann, and B. Lothenbach. 2019. “Influence of magnesium-to-phosphate ratio and water-to-cement ratio on hydration and properties of magnesium potassium phosphate cements.” Cem. Concr. Res. 123 (Sep): 105781. https://doi.org/10.1016/j.cemconres.2019.105781.
Yang, J., J. Lu, Q. Wu, M. F. Xia, and X. Li. 2018. “Influence of steel slag powders on the properties of MKPC paste.” Constr. Build. Mater. 159 (Jan): 137–146. https://doi.org/10.1016/j.conbuildmat.2017.10.081.
Yang, J., and C. Qian. 2010. “Effect of borax on hydration and hardening properties of magnesium and pottassium phosphate cement pastes.” J. Wuhan Univ. Technol. Mater. Sci. Ed. 25 (4): 613–618. https://doi.org/10.1007/s11595-010-0055-6.
Yang, J., S. Zhen, and Q. Wu. 2019. “Effect of municipal solid waste incineration fly ash on properties of magnesium potassium phosphate paste.” J. Mater. Civ. Eng. 31 (11): 06019013. https://doi.org/10.1061/(ASCE)MT.1943-5533.0002923.
Yin, S., H. Yang, Y. Dong, C. Qu, J. Liu, T. Guo, and K. Duan. 2021. “Environmentally favorable magnesium phosphate anti-corrosive coating on carbon steel and protective mechanisms.” Sci. Rep. 11 (1): 1–10. https://doi.org/10.1038/s41598-020-79613-3.
Zhang, J., F. Bian, Y. Zhang, Z. Fang, C. Fu, and J. Guo. 2018. “Effect of pore structures on gas permeability and chloride diffusivity of concrete.” Constr. Build. Mater. 163 (Feb): 402–413. https://doi.org/10.1016/j.conbuildmat.2017.12.111.
Zhang, J., S. Li, Z. Li, C. Liu, Y. Gao, and Y. Qi. 2020. “Properties of red mud blended with magnesium phosphate cement paste: Feasibility of grouting material preparation.” Constr. Build. Mater. 260 (Nov): 119704. https://doi.org/10.1016/j.conbuildmat.2020.119704.
Zhang, S., H. S. Shi, S. W. Huang, and P. Zhang. 2013. “Dehydration characteristics of struvite-K pertaining to magnesium potassium phosphate cement system in non-isothermal condition.” J. Therm. Anal. Calorim. 111 (1): 35–40. https://doi.org/10.1007/s10973-011-2170-9.
Zhang, T., H. Chen, X. Li, and Z. Zhu. 2017. “Hydration behavior of magnesium potassium phosphate cement and stability analysis of its hydration products through thermodynamic modeling.” Cem. Concr. Res. 98 (Aug): 101–110. https://doi.org/10.1016/j.cemconres.2017.03.015.
Zhen, S. C., Y. Xun, and B. Q. Miao. 2013. “Solidification/stabilization of heavy metals by magnesium potassium phosphate cement.” Adv. Mater. Res. 664 (Feb): 683–689. https://doi.org/10.4028/www.scientific.net/AMR.664.683.
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Published In
Journal of Materials in Civil Engineering
Volume 34 • Issue 9 • September 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Oct 11, 2021
Accepted: Jan 14, 2022
Published online: Jun 28, 2022
Published in print: Sep 1, 2022
Discussion open until: Nov 28, 2022
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