[1] [1] XU B W,LOTHENBACH B,MA H Y. Properties of fly ash blended magnesium potassium phosphate mortars: effect of the ratio between fly ash and magnesia［J］. Cement and Concrete Composites,2018,90: 169-177.

[2] [2] FAN S J,DU X,CHEN B. Research on application of magnesium phosphate cement in 3D printing［J］. New Building Materials,2015,42(1): 1-4 (in Chinese).

[3] [3] ZHANG Y,ZHU Y M,REN Q,et al. Progress on 3D printing construction technology and its cement-based materials［J］. Bulletin of the Chinese Ceramic Society,2021,40(6): 1796-1807 (in Chinese).

[4] [4] LIU J,GUO R H,ZHANG Z Q. Research progress of properties of magnesium phosphate cement［J］. Materials Reports,2021,35(23): 23068-23075 (in Chinese).

[5] [5] HUANG X M,LIU G D,ZHENG Y,et al. The performance of magnesium phosphate cement in negative temperature environment: a state-of-the-art review［J］. Journal of Building Engineering,2023,76: 107278.

[6] [6] DING H Z,SHEN Y J,DU Z Y,et al. Experimental study on metakaolin modified recycled coarse aggregate concrete［J］. Chongqing Architecture,2023,22(2): 52-56 (in Chinese).

[7] [7] JIANG Z W,QIAN C,CHEN Q. Experimental investigation on the volume stability of magnesium phosphate cement with different types of mineral admixtures［J］. Construction and Building Materials,2017,157: 10-17.

[8] [8] GAO M,CHEN B,LANG L,et al. Influence of silica fume on mechanical properties and water resistance of magnesium-ammonium phosphate cement［J］. Journal of Materials in Civil Engineering,2020,32(3): 04019368.

[9] [9] SHI Y W,CHEN B. Magnesium phosphate cement modified by metakaolin［J］. Journal of the Chinese Ceramic Society,2018,46(8): 1111-1116 (in Chinese).

[10] [10] QIN Z H,ZHOU S B,MA C,et al. Roles of metakaolin in magnesium phosphate cement: effect of the replacement ratio of magnesia by metakaolin with different particle sizes［J］. Construction and Building Materials,2019,227: 116675.

[11] [11] WANG M M,LIU Q,LIANG X X,et al. Influence of metakaolin on properties of magnesium potassium phosphate cement with high water-to-solid ratio［J］. Journal of Materials in Civil Engineering,2022,34(9): 04022227.

[12] [12] QIN Z H,MA C,ZHENG Z Q,et al. Effects of metakaolin on properties and microstructure of magnesium phosphate cement［J］. Construction and Building Materials,2020,234: 117353.

[13] [13] WU B,JIAO Y X,CAO R D,et al. Effect of metakaolin on the water resistance of magnesium phosphate cement mortar［J］. Coatings,2023,13(10): 1664.

[14] [14] LIU R Q,WANG W,QI D W,et al. Static and dynamic mechanical properties of magnesium phosphate cement modified by metakaolin after high-temperature treatment［J］. Construction and Building Materials,2023,392: 131933.

[15] [15] FU X Y,YANG J M,SHAN C M,et al. Effect of metakaolin and fly ash on bond properties between MKPC paste and concrete［J］. Bulletin of the Chinese Ceramic Society,2019,38(7): 2242-2249 (in Chinese).

[16] [16] LIU Z N,HE F Q,ZHUO W D,et al. Early hydration of metakaolin/fly ash-magnesium potassium phosphate cement system［J］. Bulletin of the Chinese Ceramic Society,2020,39(5): 1397-1402+1407 (in Chinese).

[17] [17] LIU H,FENG Q D,YANG Y H,et al. Experimental research on magnesium phosphate cements modified by fly ash and metakaolin［J］. Coatings,2022,12(7): 1030.

[18] [18] HU Z Q,CHANG J,CHEN X Y,et al. Preparation of magnesium oxysulfate cement with semidry carbonation high calcium content light-burned magnesium (Ca-LBM)［J］. Construction and Building Materials,2023,408: 133664.

[19] [19] ZHAO X Q,WANG S,LI W H. A 3D printing nozzle device for simultaneous mixing and extrusion of materials: CN109366999B［P］. 2020-07-28 (in Chinese).

[20] [20] LYU Z L. Study on the effect of mineral admixture on the performance of magnesium phosphate cement［D］. Xi’an: Changan University,2018: 45-55 (in Chinese).

[21] [21] ZHAO J T,LI X G,ZHANG Y,et al. Effects of fly ash on magnesium phosphate cement［J］. Bulletin of the Chinese Ceramic Society,2018,37(2): 695-700 (in Chinese).

[22] [22] YANG H,YUAN W,YAN S Y,et al. Research on properties of high strength magnesium phosphate cement mortar modified by ultrafine admixture［J］. New Building Materials,2023,50(3): 60-63 (in Chinese).

[23] [23] LU K L,WANG B,HAN Z C,et al. Experimental study of magnesium ammonium phosphate cements modified by fly ash and metakaolin［J］. Journal of Building Engineering,2022,51: 104137.

[24] [24] MO L W,LV L M,DENG M,et al. Influence of fly ash and metakaolin on the microstructure and compressive strength of magnesium potassium phosphate cement paste［J］. Cement and Concrete Research,2018,111: 116-129.