ACID FORMATES FOR USE AS SETTING AND EARLY STRENGTH DEVELOPMENT ACCELERATORS IN CEMENTITIOUS COMPOSITIONS

摘要

BP CASE NO. CHE. 4694ABSTRACT OF THE DISCLOSUREACID FORMATES FOR USE AS SETTING AND EARLY STRENGTHDEVELOPMENT ACCELERATORS IN CEMENTITIOUS COMPOSITIONSThis invention relates to the use of sodium, calcium andammonium slats of formic acid as early strength developersand setting accelerators in hydraulic cements, concretes,mortars and plasters. The salts used are acidic saltscontaining between 1.5 and 5 moles of the formate ionper mole of the cation. These salts have much greatersolubility and are more effective than the correspondingcalcium salts, particularly under low temperature conditions.