Analysis of Microstructure of Phosphate Cement

Abstract:

The mechanism for phosphate cement hydraulic reaction is determined. The microscopic process is described by means of scanning electronic microscope, X-ray diffraction analysis,infrared spectrophotometry and differential heat analysis. The results show the three main phases are present, i.e. hydromagnesium phosphates, Mg (OH)₂ and MgO phase. The type, structure, and amount of every phase play an important role in phosphate cement properties. Hydromagnesium phosphate phase structure has a close relation to phosphate cement setting and hardening. The development of strength has much to do with the formed crystalline directing.

• Periodical: Advanced Materials Research (Volumes 284-286)
• Pages: 2366-2369
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.284-286.2366
• Online since: July 2011
• Authors: Sha Long, Yan Tong, Fu Xuan Shen, Hong Ke Ai, An Hou Long
• Keywords: Differential Heat Analysis, Infrared Spectrophotometry, Magnesium Oxide, Microscope, Phosphate Cement, Scanning Electronic, X-Ray Diffraction Analysis (XRD)

References

[1] Abbelrazing B E I, Sharp J H, EI-Jazairi B. Cem Concr Res, 1989,19(3): 247-258

[2] Abbelrazing B E I, Sharp J H, Siddy P S, et al.Proc Br Ceram Soc.1983, 141-154

[3] Asok K, Sarkar. Phosphate cement-based faste-setting binders, Cerarnic Bulletin, 1990, 169(2): 234-237