Patent ID: 8603237

Claim:
A composition comprising: at least one of a molar ratio of magnesium oxychloride cement comprising MgO: MgCl 2 ranging from about 10:1 to about 3:1 and a molar ratio of H 2 O: MgCl 2 ranging from about 18:1 to about 13:1; and a molar ratio of magnesium oxysulfate cement comprising MgO: MgSO4 ranging from about 7:1 to about 1:1, and a molar ratio of H2O: MgSO4 ranging from about 1:7 to about 2:1; and at least one alkali metal phosphate selected from the group consisting of sodium mono hydrogen phosphate, sodium di-hydrogen phosphate, magnesium mono hydrogen phosphate, magnesium di-hydrogen phosphate, lithium mono hydrogen phosphate and lithium di-hydrogen phosphate.