摘要:
The invention relates to a dry binder pre-mix containing by weight percent: Portland clinker in the form of grains having a Dv97 varying between 10 and 30 μm or having a Blaine specific surface area greater than or equal to 5300 cm 2 /g, preferably greater than or equal to 5500 cm 2 /g, the minimum quantity of said clinker by weight percent being determined using formula (I) for a clinker having a Dv97 varying between 10 and 30 μm or using formula (II) for a clinker having a Blaine specific surface area greater than or equal to 5300 cm 2 /g, i.e. [26 x ln(Dv97 k )] - 43 (Formula (I)), wherein Dv97 k is the Dv97 of the clinker expressed in μm, and [-6.10 -3 X SSB k ] + 75 (Formula (II)), wherein SSB k is the Blaine specific surface area of the clinker expressed in cm 2 /g; - slag, the minimum quantity of said slag by weight percent being determined using formula (III) in the case of a mix with a clinker having a Dv97 varying between 10 and 30 μm or using formula (IV) in the case of a mix with a clinker having a Blaine specific surface area greater than or equal to 5300 cm 2 /g, i.e. [1000 ÷ SSB L ] x [(-90 x ln(Dv97 k )) + 310] (Formula (III)), wherein Dv97 k is the Dv97 of the clinker expressed in μm and SSB L is the Blaine specific surface area of the slag expressed in cm 2 /g, and [1000 + SSB L ] x [(0.021 x SSB k ) - 103] (Formula (IV)), wherein SSB k and SSB L are respectively the Blaine specific surface area of the clinker and the slag expressed in cm 2 /g; the total clinker quantity in the binder pre-mix being strictly lower than 60 %. The invention also relates to a dry binder pre-mix obtained by mixing said dry binder pre-mix with aggregates, as well as to a wet concrete obtained by means of mixing with water.
摘要:
L'invention a pour objet un procédé de préparation d'une composition de béton humide comprenant une étape de gâchage de : - clinker Portland sous forme de grains présentant un Dv97 de 10 à 30 µm, la quantité minimale dudit clinker en kg/m 3 étant déterminée selon la formule (V) : 90 x ln Dv 97 k - 150 x E eff ÷ 140 dans laquelle Dv97 k est le Dv97 du clinker exprimé en µm, et E eff est la quantité d'eau efficace en l/m 3 ; - laitier, dont la quantité minimale en kg/m 3 est déterminée selon la formule (VII) : 3500 ÷ SSB L x - 90 x ln Dv 97 k + 310 x E eff ÷ 140 dans laquelle SSB L est la surface spécifique Blaine du laitier exprimée en cm 2 /g, et Dv97 k et E eff sont tels que définis ci-avant ; - sulfate de calcium ; - matériaux complémentaires, présentant un Dv90 inférieur ou égal à 200 µm, dont la quantité minimale en kg/m 3 est déterminée selon la formule (IX) suivante : 220 - quantité de laitier - quantité de clinker - quantité de sulfate de calcium - de 1500 à 2200 kg/m 3 de granulats ; - un agent fluidifiant ; - éventuellement un accélérateur et / ou un agent entraîneur d'air et / ou un agent viscosant et / ou un retardateur et / ou un inertant des argiles ; avec - de 140 à 220 l/m 3 d'eau efficace,
la quantité totale de clinker dans le béton humide étant inférieure ou égale à 200 kg/m 3 .
摘要:
The invention relates to a method for producing a mixture of at least a first and a second component, at least the first or second component being a hydraulic binder, wherein the method includes the following steps: (i) allocating, on the production site of the first component, and to at least one portion of the first component, a data storage device in which at least one identifier of the portion of the first component is stored; (ii) determining the physical and/or chemical characteristics of the portion of the first component; (iii) storing the identifier and the physical and/or chemical characteristics of the portion of the first component; (iv) determining, on the mixture production site, the identifier by reading the data storage device; (v) providing a formulation of the mixture depending on the stored physical and/or chemical characteristics corresponding to the identifier; and (vi) producing said mixture with said formulation, at least partially with said portion of the first component.
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.
摘要:
L'invention a pour objet un procédé de préparation d'une composition de béton humide comprenant une étape de gâchage de : - clinker Portland sous forme de grains présentant un Dv97 de 10 à 30 µm, la quantité minimale dudit clinker en kg/m 3 étant déterminée selon la formule (V) : 90 x ln Dv 97 k - 150 x E eff ÷ 140 dans laquelle Dv97 k est le Dv97 du clinker exprimé en µm, et E eff est la quantité d'eau efficace en l/m 3 ; - laitier, dont la quantité minimale en kg/m 3 est déterminée selon la formule (VII) : 3500 ÷ SSB L x - 90 x ln Dv 97 k + 310 x E eff ÷ 140 dans laquelle SSB L est la surface spécifique Blaine du laitier exprimée en cm 2 /g, et Dv97 k et E eff sont tels que définis ci-avant ; - sulfate de calcium ; - matériaux complémentaires, présentant un Dv90 inférieur ou égal à 200 µm, dont la quantité minimale en kg/m 3 est déterminée selon la formule (IX) suivante : 220 - quantité de laitier - quantité de clinker - quantité de sulfate de calcium - de 1500 à 2200 kg/m 3 de granulats ; - un agent fluidifiant ; - éventuellement un accélérateur et / ou un agent entraîneur d'air et / ou un agent viscosant et / ou un retardateur et / ou un inertant des argiles ; avec - de 140 à 220 l/m 3 d'eau efficace,
la quantité totale de clinker dans le béton humide étant inférieure ou égale à 200 kg/m 3 .
摘要:
The present invention relates to a hydraulic binder comprising in parts by mass: (a) 40 to 70 parts of a Portland clinker; (b) 30 to 60 parts of fly ash; (c) optionally up to 30 parts of an inorganic material other than clinker or than fly ash; (d) 2.5 to 15 parts of an alkali metal salt expressed in parts of equivalent-Na 2 O relative to 100 parts of fly ash; and (e) 2 to 14 parts of sulphate expressed in parts of SO 3 relative to 100 parts of clinker; the fly ash having a Dv97 less than or equal to 40 μm, and the sum of (a), (b) and (c) being equal to 100.
摘要:
A hydraulic binder includes, in parts by mass: (a) from 20 to 60 parts of Portland clinker; (b) from 20 to 40 parts of slag; and (c) from 0 to 60 parts of inorganic material other than the clinker and the slag; the sum of (a), (b) and (c) being equal to 100 parts; which binder further includes a slag activator including, relative to 100 parts of the sum of (a) and (b): from 1.4 to 6.55 parts of alkali metal salt, expressed as equivalent-Na2O; and from 1.1 to 11.0 parts of calcium sulfate, expressed as SO3.
摘要:
The present invention relates to a dry binder premix including, in weight proportions: Portland clinker with a Blaine specific surface area of between 4500 and 9500 cm 2 /g, preferably between 5500 and 8000 cm 2 /g, the minimum amount of said clinker in weight percent relative to the total weight of the premix being determined according to the following formula (I): [-6.10 -3 x SSB k ] + 75 where SSB k is the Blaine specific surface area of the clinker in cm 2 /g; fly ash; at least one alkaline sulphate, the amount of alkaline sulphate being such that the equivalent amount of Na 2 O in the premix is at least equal to 5 wt % relative to the weight of fly ash; at least one source of SO 3 , in an amount such that the amount of SO 3 in the premix is at least equal to 2 wt % relative to the weight of the Portland clinker; additional materials having a Dv90 at most equal to 200 μm selected from among limestone powders, calcined schists, metakaolins, silica fillers, silica powders, pozzolanas, slag, fly ash and mixtures thereof; the amount of clinker plus the amount of fly ash being at least equal to 75 wt %, preferably 78 wt %, relative to the total weight of the premix; the total amount of clinker in the premix being strictly less than 60 wt % relative to the total weight of the premix. The invention also relates to a dry binder mix produced by mixing the preceding premix with aggregate, as well as to a wet concrete composition produced by mixing with water.