| 摘要 |
A method for making a cementitious material comprises forming a mixture of water and active ingredients consisting essentially of i) a compound capable of providing, in aqueous solution, magnesium ions, ii) a potassium phosphate compou nd and iii) optionally an additional phosphate source; wherein forming said mixture is substantially in the absence of ammonia or an ammonium ion-containing compound. A method for repairing a flaw in a cementitious structure comprises applying to th e flaw the cementitious binder thus prepared.
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