Accelerator for portland cement derived from fertilizer

Details Accelerator for portland cement derived from fertilizer Accelerator for portland cement derived from fertilizer

1988-01-19

1990-01-30

Hearn, Brian E.

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

C04B 2400

Patent

active

048971200

ABSTRACT:
Method of producing a calcium nitrate composition, and the resulting composition, for use as a accelerator for time of set for portland cement in concrete and mortars comprising the steps of reacting a calcium ammonium nitrate hydrate composition with a tri- or tetramethylolglycoluril (TMGU) to crosslink with and convert the ammonia present therein into non-reactive, water-soluble components which exist in an aqueous medium at selected conditions of time, temperature, and pH.

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Kantro, D. L., "Tricalcium Silicate Hydration in the Presence of Various Salts", Journal of Testing and Evaluation, JTEVA, vol. 3, No. 4, Jul. 1975, pp. 312-321.
American Cyanamic Company Bulletin "Cymel.RTM. 1172 Cross-Linking Agent", (6 pages).

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