公开(公告)号：EP2203400A2

公开(公告)日：2010-07-07

申请号：EP08867183.9

申请日：2008-10-10

申请人： Lafarge

发明人： MEILLE, Sylvain ,  BONNET, Emmanuel ,  CHANVILLARD, Gilles ,  SCHWARTZENTRUBER, Arnaud

IPC分类号： C04B28/04 ,  C04B14/12 ,  C04B14/16 ,  C04B18/08 ,  C04B28/02 ,  C04B14/10

CPC分类号： C04B28/02 ,  C04B2111/00198 ,  C04B2111/40 ,  Y02W30/92 ,  Y02W30/94 ,  C04B14/12 ,  C04B14/28 ,  C04B18/08 ,  C04B18/141 ,  C04B18/146 ,  C04B2103/304 ,  C04B2103/32 ,  C04B24/2647

摘要： The invention relates to a lightweight structural concrete comprising at least: a hydraulic binder; effective water; a superplasticizer; and aggregates, said concrete having a density in the fresh state varying from 1.40 to a value D
max calculated from the formula (I)D
max = 1.58 + (a ´ MA) in which a represents a coefficient equal to 1, advantageously equal to 0.9 and preferably equal to 0.8 and MA represents the percentage by weight of amorphous matter contained in 1 m
3 of fresh concrete; said concrete having a maximum density in the fresh state D
max equal to or less than 1.85, advantageously equal to or less than 1.8 and preferably equal to or less than 1.7; said concrete having an E
eff /L ratio varying from 0.19 to 0.46, where E
eff represents the effective amount of water in kilograms per cubic metre of fresh concrete and L represents the amount of cement and additions in kilograms per cubic metre of fresh concrete; said concrete comprising an effective amount of water varying from 100 to 230 litres per cubic metre of fresh concrete; said concrete comprising an amount of Portland clinker equal to or greater than 150 kilograms per cubic metre of fresh concrete; said concrete comprising an amount of (Portland clinker + optional additions + optional silica fumes + optional calcined schists + optional calcined clays) equal to or greater than 300 kilograms per cubic metre of fresh concrete; and said concrete having a slurry volume equal to or greater than 300 l/m
3 of fresh concrete. The invention also describes a method of producing such a concrete, the use of said concrete as building material, and a cured concrete object obtained from such a concrete.

公开(公告)号：EP2203400B3

公开(公告)日：2016-07-20

申请号：EP08867183.9

申请日：2008-10-10

申请人： Lafarge

发明人： MEILLE, Sylvain ,  BONNET, Emmanuel ,  CHANVILLARD, Gilles ,  SCHWARTZENTRUBER, Arnaud

IPC分类号： C04B28/04 ,  C04B14/12 ,  C04B14/16 ,  C04B18/08 ,  C04B28/02 ,  C04B14/10

CPC分类号： C04B28/02 ,  C04B2111/00198 ,  C04B2111/40 ,  Y02W30/92 ,  Y02W30/94 ,  C04B14/12 ,  C04B14/28 ,  C04B18/08 ,  C04B18/141 ,  C04B18/146 ,  C04B2103/304 ,  C04B2103/32 ,  C04B24/2647

公开(公告)号：EP2203400B1

公开(公告)日：2011-06-15

申请号：EP08867183.9

申请日：2008-10-10

申请人： Lafarge

发明人： MEILLE, Sylvain ,  BONNET, Emmanuel ,  CHANVILLARD, Gilles ,  SCHWARTZENTRUBER, Arnaud

IPC分类号： C04B28/04 ,  C04B14/12 ,  C04B14/16 ,  C04B18/08 ,  C04B28/02 ,  C04B14/10

CPC分类号： C04B28/02 ,  C04B2111/00198 ,  C04B2111/40 ,  Y02W30/92 ,  Y02W30/94 ,  C04B14/12 ,  C04B14/28 ,  C04B18/08 ,  C04B18/141 ,  C04B18/146 ,  C04B2103/304 ,  C04B2103/32 ,  C04B24/2647

摘要： The invention relates to a lightweight structural concrete comprising at least: a hydraulic binder; effective water; a superplasticizer; and aggregates, said concrete having a density in the fresh state varying from 1.40 to a value D
max calculated from the formula (I)D
max = 1.58 + (a ´ MA) in which a represents a coefficient equal to 1, advantageously equal to 0.9 and preferably equal to 0.8 and MA represents the percentage by weight of amorphous matter contained in 1 m
3 of fresh concrete; said concrete having a maximum density in the fresh state D
max equal to or less than 1.85, advantageously equal to or less than 1.8 and preferably equal to or less than 1.7; said concrete having an E
eff /L ratio varying from 0.19 to 0.46, where E
eff represents the effective amount of water in kilograms per cubic metre of fresh concrete and L represents the amount of cement and additions in kilograms per cubic metre of fresh concrete; said concrete comprising an effective amount of water varying from 100 to 230 litres per cubic metre of fresh concrete; said concrete comprising an amount of Portland clinker equal to or greater than 150 kilograms per cubic metre of fresh concrete; said concrete comprising an amount of (Portland clinker + optional additions + optional silica fumes + optional calcined schists + optional calcined clays) equal to or greater than 300 kilograms per cubic metre of fresh concrete; and said concrete having a slurry volume equal to or greater than 300 l/m
3 of fresh concrete. The invention also describes a method of producing such a concrete, the use of said concrete as building material, and a cured concrete object obtained from such a concrete.