Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Patent
1983-07-05
1985-01-22
Poer, James
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
106 98, 106110, 106111, 106117, C04B 735
Patent
active
044949901
ABSTRACT:
An improved cementitious composition is the subject of the present invention. The composition comprises 25-60 weight percent cement component. The cement component is 3 to 50 weight per pozzolan. The pozzolan should have a sulfate reactivity factor of no greater than 12 utilizing a function obtained from the Dunstan formula. The composition is 40 to 75 percent by weight alpha gypsum (calcium sulfate hemihydrate). Various additives may be included to enhance the performance of the composition. These include polymer modifiers, a water reducing agent, a set retarding agent and a set accelerating agent.
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patent: 3411924 (1968-11-01), Lapshin
patent: 3565648 (1971-02-01), Mori et al.
patent: 3582376 (1971-06-01), Ames
patent: 3847635 (1974-11-01), Lange et al.
patent: 4067939 (1978-01-01), Lowe et al.
Ash Grove Cement Company
Poer James
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