| 摘要 |
PROBLEM TO BE SOLVED: To provide a rapid setting and high initial strength binder which is used as a cementitious restorative material containing phosphoric acid cement. SOLUTION: The cementitious material comprises forming a mixture of water and active ingredients consisting essentially of (i) a compound capable of providing, in an aqueous solution, magnesium ions, (ii) a potassium phosphate compound and (iii) optionally an additional phosphate source, wherein forming the mixture is substantially in the absence of ammonia or an ammonium ion containing compound. COPYRIGHT: (C)2008,JPO&INPIT
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