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:
Dec. 11, 2012
Filed:
Nov. 30, 2010
Stefano Cangiano, Torre' de Roveri, IT;
Antonio Princigallo, Stezzano, IT;
Stefano Cangiano, Torre' de Roveri, IT;
Antonio Princigallo, Stezzano, IT;
Italcementi S.p.A., Bergamo, IT;
Abstract
The present invention concerns a hydraulic binder comprising a ground blast furnace slag in an amount comprised between 30% and 95% by mass on the binder, Portland cement clinker in an amount equal to or greater than 5% by mass on the binder, and at least one sulphate as activator, characterised in that said slag has the following properties and composition by mass: grinding fineness greater than 4000 cm2/g Blaine glass content greater than 80% SiO: 30-40% AlO: 9-13% CaO: 34-42% with a (CaO+MgO)/(AlO+SiO) ratio greater than 1; and in that said sulphate is contained in a total amount, expressed as SO, comprised between 0.6% and 4.5% by mass on the binder.