"Concrete With A Low Clinker Content"

Abstract: The present invention relates to a dry binder premix comprising, in mass proportions: - Portland clinker having a Blaine specific surface area comprised from 4500 to 9500 cm2/g, preferably from 5500 to 8000 cm2/g, the minimum quantity of the said clinker by mass percentage relative to the total mass of the premix being determined according to the following formula (I): in which BSSk is the Blaine specific surface area of the clinker given in cm2/g; - fly ash; - at least one alkali sulphate, the quantity of alkali sulphate being such that the quantity of equivalent Na2O in the premix is greater than or equal to 5 % by mass percentage relative to the mass of fly ash; - at least one source of SO3, in a quantity such that the quantity of SO3 in the premix is greater than or equal to 2 % by mass percentage relative to the mass of Portland clinker; - complementary materials having a Dv90 less than or equal to 200 µm selected from limestone powders, calcined shale, metakaolins, siliceous fillers, silica powders, pozzolans, slags, fly ash and mixtures thereof; the quantity of clinker + the quantity of fly ash being greater than or equal to 75 %, preferably 78 %, by mass percentage relative to the total mass of the premix; the total quantity of clinker in the premix being strictly less than 60 % by mass percentage relative to the total mass of the premix. The invention also relates to a dry binder mix obtained by mixing the previous premix with aggregates, as well as a wet concrete composition obtained by mixing with water.

Patent Information

Application #

Filing Date

23 September 2011

Publication Number

06/2013

Publication Type

INA

Invention Field

CHEMICAL

Status

Email

Parent Application

Patent Number

Legal Status

Grant Date

2018-04-03

Renewal Date

Applicants

LAFARGE

61, RUE DES BELLES FEUILLES, F-75116 PARIS, (FR)

Inventors

1. SCHWARTZENTRUBER, ARNAUD

2, ALLEE LAURENCE, F-69740 GENAS (FR)

2. MARTIN, MYLENE

ROUTE DE LA LOMBARDIERE, F-38200 LUZINAY (FR)

3. BENARD, PHILIPPE

44 RUE GABRIEL SARRAZIN, F-69008 LYON (FR)

4. SABIO, SERGE

5 LOT LES PERVENCHES, 800 ROUTE DU CORBET, F-38540 SAINT JUST CHALEYSSIN (FR)

Specification

Documents

Application Documents

#	Name	Date
1	7339-delnp-2011-GPA-(19-10-2011).pdf	2011-10-19
2	7339-delnp-2011-Form-1-(19-10-2011).pdf	2011-10-19
3	7339-delnp-2011-Correspondence-Others-(19-10-2011).pdf	2011-10-19
4	7339-delnp-2011-Correspondence Others-(19-10-2011).pdf	2011-10-19
5	7339-delnp-2011-Correspondence-Others-(27-02-2012).pdf	2012-02-27
6	7339-delnp-2011-Form-5.pdf	2012-03-22
7	7339-delnp-2011-Form-3.pdf	2012-03-22
8	7339-delnp-2011-Form-2.pdf	2012-03-22
9	7339-delnp-2011-Form-1.pdf	2012-03-22
10	7339-delnp-2011-Drawings.pdf	2012-03-22
11	7339-delnp-2011-Description (Complete).pdf	2012-03-22
12	7339-delnp-2011-Correspondence Others.pdf	2012-03-22
13	7339-delnp-2011-Claims.pdf	2012-03-22
14	7339-delnp-2011-Abstract.pdf	2012-03-22
15	7339-delnp-2011-Form-18-(23-11-2012).pdf	2012-11-23
16	7339-delnp-2011-Correspondence Others-(23-11-2012).pdf	2012-11-23
17	7339-DELNP-2011-FER.pdf	2017-06-09
18	7339-DELNP-2011-OTHERS [08-12-2017(online)].pdf	2017-12-08
19	7339-DELNP-2011-FER_SER_REPLY [08-12-2017(online)].pdf	2017-12-08
20	7339-DELNP-2011-COMPLETE SPECIFICATION [08-12-2017(online)].pdf	2017-12-08
21	7339-DELNP-2011-CLAIMS [08-12-2017(online)].pdf	2017-12-08
22	7339-DELNP-2011-PatentCertificate03-04-2018.pdf	2018-04-03
23	7339-DELNP-2011-IntimationOfGrant03-04-2018.pdf	2018-04-03

Search Strategy

1	SearchStrategy_09-06-2017.pdf