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:
Mar. 12, 2013
Filed:
Oct. 10, 2008
Sylvain Meille, Tignieu-Jameyzieu, FR;
Gilles Chanvillard, Saint Georges D'Esperanche, FR;
Arnaud Schwartzentruber, Genas, FR;
Emmanuel Bonnet, Chabons, FR;
Sylvain Meille, Tignieu-Jameyzieu, FR;
Gilles Chanvillard, Saint Georges D'Esperanche, FR;
Arnaud Schwartzentruber, Genas, FR;
Emmanuel Bonnet, Chabons, FR;
Lafarge, Paris, FR;
Abstract
A lightweight structural concrete includes a hydraulic binder; effective water; a superplasticizer; and aggregates; the concrete having a density in the fresh state varying from 1.40 to a Dvalue calculated according to formula (I) D=1.58+(a×AM) in which 'a' represents a coefficient for which the value is equal to 1; 'AM' represents the mass percentage of the amorphous materials contained in 1 mof fresh concrete; the concrete having a maximum fresh state density Dless than or equal to 1.85; the concrete having a W/L ratio varying from 0.19 to 0.46, where Wrepresents the quantity of effective water in kilogram per cubic meter of fresh concrete; “L” represents the quantity of cement and additions in kilograms per cubic meter of fresh concrete; the concrete including a quantity of effective water varying from 100 to 230 liters per cubic meter of fresh concrete; the concrete including a quantity of Portland clinker greater than or equal to 150 kilograms per cubic meter of fresh concrete; the concrete including a quantity of (Portland clinker+optionally fly ash+optionally slags+optionally silica fume+optionally calcined shale+optionally calcined clays) greater than or equal to 300 kilograms per cubic meter of fresh concrete; the concrete having a volume of paste greater than or equal to 300 l/mof fresh concrete; the concrete including from 1 to 16% by volume of air.