Fast-setting cements from superphosphoric acid

Details Fast-setting cements from superphosphoric acid Fast-setting cements from superphosphoric acid

1986-05-15

1988-03-29

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

501111, C04B 904, C04B 3504

Patent

active

047341335

ABSTRACT:
Process for preparing dry fast-setting, magnesium phosphate cementitious composition capable of setting to a hardened mass at ambient temperatures following the addition of water thereto is disclosed. In this process unfiltered superphosphoric acid is added to a mixture of a magnesium-containing compound, e.g. MgO, and an aggregate, e.g. silica, with cooling to form a dry powder. This dry powder can be stored without caking, and forms a fast-setting cement having commercially acceptable compressive strength in the presence of water.

REFERENCES:
patent: 3202520 (1965-08-01), Enoch
patent: 3475188 (1969-10-01), Woodhouse et al.
patent: 3525632 (1970-08-01), Enoch
patent: 3821006 (1974-06-01), Schwartz
patent: 3879209 (1975-04-01), Limes et al.
patent: 4059455 (1977-11-01), Limes et al.
patent: 4174227 (1979-11-01), Tomic
patent: 4487632 (1984-12-01), Sherif et al.

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