Effects of Three Kinds of Solid Waste Micro-powder on the Early Properties and Action Mechanism for Magnesium Potassium Phosphate Cement Paste
ZHANG Jie1,2, ZHANG Jianjian1, SUN Guowen1, YANG Jianming2, TANG Qingqing1,2
1 School of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043; 2 College of Civil Engineering, Yancheng Institute of Technology, Yancheng 224051;
Abstract: To improve the early properties of potassium magnesium phosphate cement (MKPC) paste and make full use of so-lid waste micro-powder, the influencing law of different content of fly ash, steel slag and nickel slag micro-powder on the hydration temperature, compressive strength and volume deformation of magnesium potassium phosphate cement paste at early stage (Normal temperature curing for 24 h) were investigated by a combination of macro-performance testing and microstructure analysis. The results showed that the peak temperature of the first hydration temperature in the composite MKPC paste with three kinds of solid waste micro-powders reduce 3 ℃ to 10 ℃, and among them, the blending effect of steel slag was significant and it maked the first peak time of composite MKPC paste postpone more than 30 minutes. Considering the maximum utilization rate of the solid waste and the reference standards on the rapid repair material requiring the strength not less than 42.5 MPa with one day, the suitable dosage of fly ash, steel slag and nickel slag micro-powder was 20%,30% and 30%, respectively; the volumetric expansion rate of the compo-site MKPC hardened body was higher than that of the control group at one day. In addition, the microstructure of MKPC hardened paste containing suitable amount of solid waste micro-powder showed that the number increased, grain size becoming smaller and morphology changed of the crystal, and the structure accumulation was also obviously dense.
张洁, 张建建, 孙国文, 杨建明, 汤青青. 三种固废微粉对磷酸钾镁水泥浆体早期性能影响及作用机理[J]. 材料导报, 2018, 32(20): 3553-3561.
ZHANG Jie, ZHANG Jianjian, SUN Guowen, YANG Jianming, TANG Qingqing. Effects of Three Kinds of Solid Waste Micro-powder on the Early Properties and Action Mechanism for Magnesium Potassium Phosphate Cement Paste. Materials Reports, 2018, 32(20): 3553-3561.
1 Wagh A S. Chemically bonded phosphate ceramics:21st century materials with diverse applications[M]. London: Elsevier Science,2004,12. 2 Andrade A, Schuiling R D. The chemistry of struvite crystallization[J]. Mineral Journal,2001(23):37. 3 Yang Q, Zhu B, Wu X. Characteristics and durability test of magnesium phosphate cement-based material for rapid repair of concrete[J]. Material and Structure,2000,33(4):229. 4 Yang Q, Zhang S, Wu X. Deicer-scaling resistance of phosphate cement-based binder for rapid repair of concrete[J]. Cement and Concrete Research,2002 32(1):165. 5 Yang J M, Qian C X, Xun Y, et al. Study on durability of glass fiber reinforced magnesium phosphate cement composites[J]. Journal of Building Materials,2009,12(5):590(in Chinese). 杨建明,钱春香,荀勇,等.玻纤增强磷酸镁水泥复合材料的耐久性[J].建筑材料学报,2009,12(5):590. 6 Seehra S S, Gupta S, Kumar S. Rapid setting magnesium phosphate cement for quick repair of concrete pavements-characterisation and durability aspects[J]. Cement and Concrete Research,1993,23(2):254. 7 Yang Q, Zhu B, Zhang S, et al. Properties and applications of magnesia-phosphate cement mortar for rapid repair of concrete[J]. Cement and Concrete Research,2000,30(11):1807. 8 Wagh A S, Chemically bonded phosphate ceramics: Twenty-first century materials with diverse applications[M]. UK: Elsevier,2016. 9 Yang J M, Shi C J, Chang Y, et al. Hydration and hardening cha-racteristics of magnesium potassium phosphate cement paste with compound retarder[J]. Building Materials,2013,16(1):46(in Chinese). 杨建明,史才军,常远,等.掺复合缓凝剂的磷酸钾镁水泥浆体的水化硬化特性[J].建筑材料学报,2013,16(1):46. 10 Ding Z, Li Z J. Preparation and properties of early strength phosphorous portland cement[J]. Materials Research,2006(2):141(in Chinese). 丁铸,李宗津.早强磷硅酸盐水泥的制备和性能[J].材料研究学报,2006(2):141.11 Wang H T, Qian J S, Cao J H, et al. Effect of fly ash on the pro-perties of phosphate cement based repairing materials[J]. New buil-ding materials,2005(12):41(in Chinese). 汪宏涛,钱觉时,曹巨辉,等.粉煤灰对磷酸盐水泥基修补材料性能的影响[J].新型建筑材料,2005(12):41. 12 杨建明,史才军.一种磷酸钾镁水泥凝结时间和早期水化速度的控制方法:CN,102234200A[P].2011-11-09. 13 Zhang S, et al. Dehydration characteristics of struvite-K pertaining to magnesium potassium phosphate cement system in non-isothermal condition[J]. Thermal Analysis and Calorimetry,2013,111(1):3. 14 Fei Q. Reaction mechanisms of magnesium potassium phosphate cement and its application[D].Hong Kong, China:The Hong Kong University of Science and Technology,2010. 15 Hou G H, Li W F, Wang J G. Differences in the phase-to-grinding and gelling properties of converter steel slag[J]. Chinese Ceramic Society,2009,37(10):1613(in Chinese). 侯贵华,李伟峰,王京刚.转炉钢渣中物相易磨性及胶凝性的差异[J].硅酸盐学报,2009,37(10):1613.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2018, Vol. 32 
