Abstract
Magnesium potassium phosphate cement (MKPC) incorporated with slag was prepared from the byproduct boron-containing magnesium oxide (B-MgO) from the production of Li2CO3 from salt lakes. The influence of the slag content on the setting time, compressive strength, water resistance and seawater corrosion resistance of MKPC was investigated. The composition and microstructure of MKPC were also studied in detail. The results demonstrate that the setting time of MKPC increases with increasing slag content. The compressive strength at 3h and 28d of MKPC specimens with 20wt% slag can reach approximately 35MPa and 60MPa, respectively. Moreover, slag significantly improves the water resistance and the seawater corrosion resistance of MKPC. The properties of MKPC incorporated with 20wt% slag indicated that it met the requirements for rapid repairing materials.
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