| http://www.w3.org/ns/prov#value | - The prior art has proposed dry cement compositions comprising phosphorous containing compounds including phosphoric acid, and basic metal oxides such as aluminum and magnesium oxides and their oxyphosphate compounds, settable on mixing with water to form a concrete binder, as dislosed in U.S. Pat. No. 3,525,632 dated Aug. 25, 1970 issued to Enoch, C. R. Such cements are intended to be used with mi
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