The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 14, 1979
Filed:
Jun. 14, 1977
Boris I Nudelman, Tashkent, SU;
Alexandr S Sventsitsky, Tashkent, SU;
Marsel Y Bikbau, Tashkent, SU;
Isaak M Bun, Tashkent, SU;
Arnold A Kevvai, Tashkent, SU;
Other;
Abstract
Cement is disclosed having the following composition, in percent by weight: 20 to 75% of highly basic calcium chlorosilicate, 10 to 55% of calcium chloro-orthosilicate, 0.5 to 30% of calcium chloroaluminate, 2 to 20% of calcium chloroalumoferrite; cement of the foregoing compositions is produced by calcining at a temperature within the range of from 1,000.degree. to 1,200.degree. C. a raw mixture containing a calcareous component, silicaceous component, aluminous component, ferrous component, magnesium-containing component and calcium chloride in particular proportions, and then grinding the resultant cement clinker. This cement features a reduced heat emission in the initial stage of the hydration process and possesses a high activity. No corrosion of steel reinforcement is observed in concretes produced from the present cement. The cement can be used in heavy-duty concrete structures such as hydropower dams, in the production of high-strength concretes and ferroconcrete structures. The present process involves calcination at lowered temperatures and makes it possible to obtain a cement clinker possessing a high porosity and increased grinding ability thus reducing power consumption for its grinding by 2-2.5 times.