Method for preparing a wet concrete composition and method for controlling the workability, rheology, and / or open time of a wet concrete composition

Abstract

A method for preparing a wet concrete composition, comprising: A. at least one aggregate; B. a binder system in an amount of 400 kg or less per cubic meter of the wet concrete composition, preferably less than 370 kg per cubic meter of the wet concrete composition; and C. an admixture formulation, which are mixed with water. The binder system (B.) is prepared from at least some of the different constituent materials of the binder system before or during the mixing step in situ. The constituent materials are incorporated separately and / or in the form of a premix. The binder system (B.) comprises: (B1) at least one lime source between 1% and 34% by dry mass; (B2) ground granulated blast-furnace slag between 5% and 75% by dry mass; (B3) at least one filler between 21% and 90% by dry mass; and (B4) SO3 between 0.1% and 5% by dry mass based on the total mass of the constituent materials B1, B2, and B3. The admixture formulation (C.) comprises: (C3) at least one water-reducing polymer; and (C4) optionally, a wetting agent and / or a surfactant. The step of mixing with water is carried out at a mass ratio of water to the binder system (B.) included between 0.2 and 0.4, more preferably between 0.25 and 0.35. 3 per cubic meter of the wet concrete composition, preferably less than 370 kg per cubic meter of the wet concrete composition 3 of the binder system, and C. an admixture formulation, which are mixed with water. The binder system (B.) is prepared from at least some of the different constituent materials of the binder system before or during the mixing step in situ. The constituent materials are incorporated separately and / or in the form of a premix. The binder system (B.) comprises: (B1) at least one lime source between 1% and 34% by dry mass; (B2) ground granulated blast-furnace slag between 5% and 75% by dry mass; (B3) at least one filler between 21% and 90% by dry mass; and (B4) SO3 between 0.1% and 5% by dry mass based on the total mass of the constituent materials B1, B2, and B3. The admixture formulation (C.) comprises: (C3) at least one water-reducing polymer; and (C4) optionally, a wetting agent and / or a surfactant. The step of mixing with water is carried out at a mass ratio of water to the binder system (B.) included between 0.2 and 0.4, more preferably between 0.25 and 0.35.

Description

Technical Field

[0001] The present disclosure relates to the field of concrete compositions. The technical field of the present invention is hydraulic mineral binders containing at least one slag, such as ground granulated blast furnace slag (GGBS or slag), which are used in compositions capable of setting and hardening, such as concrete compositions, and relates to hydraulic mineral binders.

[0002] More specifically, the present invention relates to a method for preparing a wet concrete composition and a method for controlling the workability, rheology, and / or open time of said wet concrete composition.

Background Art

[0003] The production of Portland cement has a strong negative impact on the environment due to the large amount of carbon dioxide emissions. Cement production essentially produces CO2 by decarbonation of limestone during firing of raw materials at very high temperatures (1450 °C) in a kiln (Eq. (1)). CaCO3(s) → CaO(s) + CO2(g) (Eq. (1))

[0004] In addition, carbon dioxide is released as a result of the combustion of fossil fuels required to heat the cement kiln. By adding additional emissions from grinding, approximately 1 ton of CO2 per ton of Portland cement is obtained. The cement industry generally accounts for about 7-9% of global carbon dioxide emissions.

[0005] Furthermore, handling Portland cement can lead to health problems (such as allergies) especially due to its high alkalinity (pH higher than 13). In addition, there is a risk that harmful hexavalent chromium (Cr(VI)) may be released during kneading, which is also harmful to the health of workers when in contact with the skin. Although cement powder usually contains a Cr(VI) reducing agent (as ferrous sulfate), its efficiency is limited in time. Construction workers, especially those in the third world, are not required to check the deadlines associated with such treatments.

[0006] Recent investigations on new binders aim to replace cement with binders that have a lower environmental impact in various applications. One approach is to use resources such as by-products from other industries (which are waste for one industry but major resources for another) without expensive treatment. This is the case of blast furnace slag, a by-product of the iron and steel industry. By grinding this product into fine powder (GGBS), a cementitious material can be obtained, which can be used as a partial replacement for cement or used alone by adding some chemical activators.

[0007] It is important to note that the use of GGBS not only takes environmental considerations into account but also brings some enhanced properties when used for formulating mortar and concrete, such as high resistance to sulfate attack, low permeability, good resistance in chemically aggressive environments, low heat of hydration (required in large structures), overall excellent durability, and the possibility of immobilizing heavy metals or radionuclides.

[0008] In addition, considering limiting the impact on the environment, it is desirable to limit the amount of water required for the hydraulic setting and hardened concrete composition. However, reducing the mass ratio of water to the binder composition leads to several handling problems such as low dynamic viscosity, making the mixing process difficult, low dynamic viscosity, increasing the spreading time, and controlling the duration of the open time which is generally about 2 hours.

Prior Art Documents

Non-Patent Documents

[0009]

Non-Patent Document 1

[1999] Materials and Structures, Vol.33, October 2000

Non-Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0010] In this context, the present invention aims to address at least one of the above problems and / or requirements by fulfilling at least one of the following objectives. - O1- To provide a concrete composition that is an attractive alternative to ordinary Portland cement (OPC)-based compositions. - O2- To provide an environmentally considerate concrete composition. - O3- To provide a concrete composition that is more acceptable than OPC-based compositions with respect to health and safety issues. - A concrete composition comprising a binder system and an admixture that produces a wet mix, wherein the wet mix has suitable rheological properties, i.e., a stable rheology (good workability) during the normal setting time (from several minutes to several hours, etc.) required by the user of the wet mix. - To provide a concrete composition that produces a hardened material having the required mechanical properties, particularly an acceptable initial strength (e.g., 24 hours). - To provide a concrete composition that produces a hardened material having the required durability.

Means for Solving the Problems

[0011] At least one of the above objects is a method for preparing a wet concrete composition, comprising: A. At least one aggregate, and B. A binder system of 400 Kg or less per cubic meter of the wet concrete composition, preferably less than 370 Kg per cubic meter of the wet concrete composition, and 3 C. An admixture formulation 3 are mixed with water, The binder system (B.) is prepared from at least some of the different constituent materials of the binder system before the mixing step or during the in-situ mixing step, and the constituent materials are incorporated separately and / or in the form of a premix. The binder system (B.) comprises: (B1) At least one lime source between 1% and 34% by dry mass, (B2) Granulated blast furnace slag fine powder between 5% and 75% by dry mass, (B3) At least one filler between 21% and 90% by dry mass, (B4) SO3 between 0.1% and 5% by dry mass based on the total mass of constituent materials B1, B2, and B3, and the granulated blast furnace slag fine powder has a d of 5 μm or more and strictly less than 15 μm. 50 50Optionally, particles having a d between 1 μm and strictly less than 5 μm, in an amount by mass of between 0.1% and 100% with respect to the total mass of the blast furnace slag fine powder 50 which is a particle mixture with particles having a The filler has a d of 0.05 μm or more and strictly less than 8 μm 50 Optionally, particles having a d between 8 μm and strictly less than 200 μm, in an amount by mass of between 0.1% and 50% with respect to the total mass of the filler 50 which is a particle mixture with particles having a d 50 Measurement of is performed by a laser diffraction analyzer such as "Mastersizer 2000" commercially available from MALVERN using the wet method by laser diffraction analysis, also known as laser diffraction spectroscopy The admixture formulation (C.) is (C1) at least one water-reducing polymer and (C2) optionally, a wetting agent and / or a surfactant and contains The water-reducing polymer (C1) is polyethylene glycol having a terminal phosphonic acid group and / or the following monomer units - unit UA

[0012]

Chemical formula

[0013] - unit UB

[0014]

Chemical formula

[0015] - unit UC

[0016]

Chemical formula

[0017] - unit UD

[0018] [Chemical formula]

[0019] (wherein,

[0020] [Chemical formula]

[0021] represents the binding site of the monomer unit, the content of the monomer unit UA is between 0 and 40 mol%, the content of the monomer unit UB is between 25 and 95 mol%, the content of the monomer unit UC is between 5 and 50 mol%, the content of the monomer unit UD is between 0 and 25 mol%, R1 and R2 are independently hydrogen or methyl, Z1 is a bond, methyl, or ethyl, Z2 is a bond, -CH2CH2O-, -CH2CH2OCH2CH2O-, or -CH2CH2CH2CH2O-, R3 is -(CH2CH2O) m -R4, -(CH(CH3)CH2O) n -R4, or -(CH2CH2OCH(CH3)CH2O) y -R4, m, n, and y are independently integers included between 7 and 100, R4 is hydrogen, methyl, R5 is hydrogen, methyl, or -CH2COOH, R6 is -OH, -OCH2OH, -OCH2CH2OH, -OCH2CH2CH2OH, -OCH2CH(CH3)CH2OH, -OCH2CH2CH2CH2OH, -NHR7, a group having a phosphate functional group, a group having a phosphonic acid functional group, or a group having a sulfonic acid functional group, R7 is a copolymer comprising from 2 to 12 carbon atoms and finally one or more heteroatoms, preferably O, N, or S, and being linear or branched, saturated or unsaturated. The wetting agent and / or surfactant reduces the surface tension of water to below 68 mN.m -1 and the wetting agent is preferably selected from the group consisting of glycol compounds and has a molecular weight between 60 g.mol -1 and 130 g.mol -1 . The surfactant has a molecular weight between 131 g.mol -1 and 300 g.mol− 1 . The step of mixing with water is carried out at a mass ratio of water to binder system (B.) between 0.2 and 0.4, more preferably between 0.25 and 0.35. This is achieved by the method.

[0022] The present invention also relates to a method for controlling the workability, rheology, and / or open time of a wet concrete composition comprising aggregate (A.), water (D.), and a binder system (B.), wherein the binder system (B.) comprises (B1) at least one lime source between 1% and 34% by dry mass, (B2) blast furnace slag fine powder between 5% and 75% by dry mass, (B3) at least one filler between 21% and 90% by dry mass, (B4) SO3 between 0.1% and 5% by dry mass with respect to the total mass of components B1, B2, and B3 and (B1) optionally, the blast furnace slag fine powder is a particle mixture of particles having a d 50 of 5 μm or more and strictly less than 15 μm, and particles having a d 50 of between 1 μm and strictly less than 5 μm, in a mass between 0.1% and 100% with respect to the total mass of the blast furnace slag fine powder, the filler has a d 50Optionally, particles having a d of 8 μm or more and strictly less than 200 μm, by mass, between 0.1% and 50% with respect to the total mass of the filler 50 a particle mixture with particles having d 50 is measured by laser diffraction analysis, also known as laser diffraction spectroscopy, using the wet method, by a laser diffraction analyzer such as "Mastersizer 2000" commercially available from MALVERN The mass ratio of water (D.) to the binder composition (B.) is included between 0.2 and 0.4, more preferably between 0.25 and 0.35 the method includes adding a admixture formulation (C.) to the wet concrete composition, and the admixture formulation (C.) (C1) at least one water-reducing polymer, and (C2) optionally, a wetting agent and / or a surfactant and includes the water-reducing polymer (C1) is polyethylene glycol having a terminal phosphonic acid group, and / or the following monomer units - unit UA

[0023]

Chemical formula

[0024] - unit UB

[0025]

Chemical formula

[0026] - unit UC

[0027]

Chemical formula

[0028] - unit UD

[0029]

Chemical formula

[0030] (wherein

[0031] [Chem.]

[0032] represents the bonding site of the monomer unit, the content of the monomer unit UA is between 0 and 40 mol%, the content of the monomer unit UB is between 25 and 95 mol%, the content of the monomer unit UC is between 5 and 50 mol%, the content of the monomer unit UD is between 0 and 25 mol%, R1 and R2 are independently hydrogen or methyl, Z1 is a bond, methyl, or ethyl, Z2 is a bond, -CH2CH2O-, -CH2CH2OCH2CH2O-, or -CH2CH2CH2CH2O-, R3 is -(CH2CH2O) m -R4, -(CH(CH3)CH2O) n -R4, or -(CH2CH2OCH(CH3)CH2O) y -R4, m, n, and y are independently integers included between 7 and 100, R4 is hydrogen, methyl, R5 is hydrogen, methyl, or -CH2COOH, R6 is -OH, -OCH2OH, -OCH2CH2OH, -OCH2CH2CH2OH, -OCH2CH(CH3)CH2OH, -OCH2CH2CH2CH2OH, -NHR7, a group having a phosphoric acid functional group, a group having a phosphonic acid functional group, or a group having a sulfonic acid functional group, R7 is a copolymer containing from 2 to 12 carbon atoms and finally one or more heteroatoms, preferably O, N or S, which may be saturated or unsaturated, linear or branched, Wetting agents and / or surfactants reduce the surface tension of water to 68 mN.m -1 and the wetting agent is selected from the group consisting of, preferably including, glycol compounds, -1 to 130 g.mol -1 and the surfactant has a molecular weight comprised between 131 g.mol -1 to 300 g.mol -1 having a molecular weight comprised between Regarding the method.

[0033] The present invention additionally relates to the use of the admixture formulation (C.), (C1) at least one water-reducing polymer; (C2) optionally with a wetting agent and / or surfactant; Including, The water-reducing polymer (C1) is a polyethylene glycol having a terminal phosphonic acid group, and / or the following monomer units: - Unit UA

[0034] [ka]

[0035] - Unit UB

[0036] [ka]

[0037] - Unit UC

[0038] [ka]

[0039] - Unit UD

[0040] [Chem.]

[0041] (wherein

[0042] [Chem.]

[0043] represents the binding site of the monomer unit, the content of monomer unit UA is between 0 and 40 mol%, the content of monomer unit UB is between 25 and 95 mol%, the content of monomer unit UC is between 5 and 50 mol%, the content of monomer unit UD is between 0 and 25 mol%, R1 and R2 are independently hydrogen or methyl, Z1 is a bond, methyl, or ethyl, Z2 is a bond, -CH2CH2O-, -CH2CH2OCH2CH2O-, or -CH2CH2CH2CH2O-, R3 is -(CH2CH2O) m -R4, -(CH(CH3)CH2O) n -R4, or -(CH2CH2OCH(CH3)CH2O) y -R4, m, n, and y are independently integers included between 7 and 100, R4 is hydrogen, methyl, R5 is hydrogen, methyl, or -CH2COOH, R6 is -OH, -OCH2OH, -OCH2CH2OH, -OCH2CH2CH2OH, -OCH2CH(CH3)CH2OH, -OCH2CH2CH2CH2OH, -NHR7, a group having a phosphate functional group, a group having a phosphonic acid functional group, or a group having a sulfonic acid functional group, R7 is a copolymer containing from 2 to 12 carbon atoms and finally one or more heteroatoms, preferably O, N, or S, and being linear or branched, saturated or unsaturated. The wetting agent and / or surfactant reduces the surface tension of water to below 68 mN·m -1 The wetting agent is preferably selected from the group consisting of glycol compounds and has a molecular weight between 60 g·mol -1 and 130 g·mol -1 The surfactant has a molecular weight between 131 g·mol -1 and 300 g·mol -1 and is included. To control the mixability, rheology, and / or open time of the wet concrete composition, it contains aggregate (A.), water (D.), and binder system (B.) in an amount of 400 Kg per 1 m³ of the wet concrete composition, preferably less than 370 kg per 1 m³ of the wet concrete composition. (B1) At least one lime source between 1% and 34% by dry mass; (B2) Ground granulated blast furnace slag between 5% and 75% by dry mass; (B3) At least one filler between 21% and 90% by dry mass; (B4) SO₃ between 0.1% and 5% by dry mass with respect to the total mass of constituent materials B1, B2, and B3; and is included. The ground granulated blast furnace slag is optionally a particle mixture of particles having a d 50 of 5 μm or more and strictly less than 15 μm, and particles having a d 50 of 1 μm or more and strictly less than 5 μm, in a mass between 0.1% and 100% with respect to the total mass of the ground granulated blast furnace slag. The filler is optionally a particle mixture of particles having a d 50 of 0.05 μm or more and strictly less than 8 μm, and particles having a d 50 of 8 μm or more and strictly less than 200 μm, in a mass between 0.1% and 50% with respect to the total mass of the filler. d 50The measurement is performed by a laser diffraction analyzer such as "Mastersizer 2000" commercially available from MALVERN, using the wet method, by laser diffraction analysis, also known as laser diffraction spectroscopy, The mass ratio of water (D.) to the binder composition (B.) is included between 0.2 and 0.4, more preferably between 0.25 and 0.35, for use.

[0044] The present invention further provides A. at least one kind of aggregate, B. 400 Kg per 1 m of the wet concrete composition, preferably less than 370 kg per 1 m of the wet concrete composition 3 of an amount of a binder system, 3 C. an admixture formulation, and D. water to form a wet concrete composition, wherein the binder system (B.) comprises (B1) at least one kind of lime source between 1% and 34% by dry mass, (B2) blast furnace slag fine powder between 5% and 75% by dry mass, (B3) at least one kind of filler between 21% and 90% by dry mass, (B4) SO3 between 0.1% and 5% by dry mass based on the total mass of the constituent materials B1, B2, and B3 and the blast furnace slag fine powder is optionally a particle mixture of particles having a d of 5 μm or more and strictly less than 15 μm and particles having a d between 1 μm and strictly less than 5 μm in a mass between 0.1% and 100% with respect to the total mass of the blast furnace slag fine powder, 50 the filler is optionally a particle mixture of particles having a d of 0.05 μm or more and strictly less than 8 μm and particles having a d between 8 μm and strictly less than 200 μm in a mass between 0.1% and 50% with respect to the total mass of the filler, 50 and d 50 50 d 50The measurement is carried out by a laser diffraction analyzer such as "Mastersizer 2000" commercially available from MALVERN using the wet method by laser diffraction analysis, also known as laser diffraction spectroscopy. The admixture formulation (C.) (C1) at least one water-reducing polymer and (C2) optionally, a wetting agent and / or a surfactant and The water-reducing polymer (C1) is polyethylene glycol having a terminal phosphonic acid group and / or the following monomer units - unit UA

[0045] [Chemical formula]

[0046] - unit UB

[0047] [Chemical formula]

[0048] - unit UC

[0049] [Chemical formula]

[0050] - unit UD

[0051] [Chemical formula]

[0052] (wherein

[0053] [Chemical formula]

[0054] represents the binding site of the monomer unit, the content of monomer unit UA is between 0 and 40 mol%, the content of monomer unit UB is between 25 and 95 mol%, the content of monomer unit UC is between 5 and 50 mol%, the content of monomer unit UD is between 0 and 25 mol%, R1 and R2 are independently hydrogen or methyl, Z1 is a bond, methyl, or ethyl, Z2 is a bond, -CH2CH2O-, -CH2CH2OCH2CH2O-, or -CH2CH2CH2CH2O-, R3 is -(CH2CH2O) m -R4, -(CH(CH3)CH2O) n -R4, or -(CH2CH2OCH(CH3)CH2O) y -R4, m, n, and y are independently integers included between 7 and 100, R4 is hydrogen, methyl, R5 is hydrogen, methyl, or -CH2COOH, R6 is -OH, -OCH2OH, -OCH2CH2OH, -OCH2CH2CH2OH, -OCH2CH(CH3)CH2OH, -OCH2CH2CH2CH2OH, -NHR7, a group having a phosphate functional group, a group having a phosphonic acid functional group, or a group having a sulfonic acid functional group, R7 is a copolymer containing from 2 to 12 carbon atoms and finally one or more heteroatoms, preferably O, N, or S, and being a saturated or unsaturated straight-chain or branched-chain, a wetting agent and / or a surfactant reduces the surface tension of water to below 68 mN.m, -1 the wetting agent contains glycol compounds, preferably selected from the group consisting of them, and has a molecular weight included between 60 g.mol -1 and 130 g.mol -1 and the surfactant has a molecular weight included between 131 g.mol -1 and 300 g.mol -1having a molecular weight included between, the mass ratio of water to the binder system (B.) being included between 0.2 and 0.4, more preferably between 0.25 and 0.35, relates to a wet concrete composition.

[0055] The present invention also relates to a hardened concrete composition obtained from the above-described wet concrete composition.

[0056] Definitions According to the terminology used herein, the following non-limiting definitions must be taken into account.

[0057] "Slag" means a stony by-product separated from metals during the smelting or refining of ores.

[0058] "GGBS" or "GGBFS": ground granulated blast-furnace slag, which is equivalent to blast furnace slag, granulated blast furnace slag (GBFS), and blast furnace ground slag powder.

[0059] "Cement" is understood to mean a powdery substance manufactured for use in the production of mortar or concrete. This is a mineral hydraulic binder that does not contain any organic compounds. This refers to any ordinary cement and includes alkali-activated cements blended with slag Portland.

[0060] "Binder" refers to "hydraulic binder", which means a material that hardens only by adding water, such as GGBS and cement.

[0061] "Dry concrete" refers to a material composed of a binder, aggregates such as sand and gravel, and other constituent materials such as admixtures. "Wet concrete" refers to a material composed of a binder, aggregates such as sand and gravel, and other constituent materials such as admixtures and water. "Hardened concrete" refers to a hardened product obtained from wet concrete after reaction and evaporation of water.

[0062] "d" 50 "gives the median size of the particle size distribution of the material (usually in micrometers for cementitious materials). This means that 50% of the particles have a size less than a certain number and 50% of the particles have a size greater than a given number. The measurement of d" 50 is carried out by laser diffraction analysis, also known as laser diffraction spectroscopy, using the wet method, by a laser diffraction analyzer such as "Mastersizer 2000" commercially available from MALVERN.

[0063] "Filler" refers to a material whose main role in the binder is physical rather than chemical. Fillers occupy the pore space and are less energy-intensive, so they are used as substitutes for hydraulic binders and supplementary cementitious materials. Here, this term refers to crushed limestone, crushed dolomite, marble powder, siliceous sand, recycled concrete fine aggregate, or a mixture thereof.

Brief Description of the Drawings

[0064]

Figure 1

Figure 2

Embodiments for Carrying Out the Invention

[0065] Method for Preparing a Wet Concrete Composition According to the present invention, the binder system (B.) may be prepared from at least some of the different constituent materials of the binder system before or during the mixing step in situ, and the constituent materials are incorporated separately and / or in the form of a premix.

[0066] In other words, the wet concrete composition can be prepared by two separate methods.

[0067] In the first method, a binder system is prepared and then mixed with at least one aggregate. The resulting dry concrete composition is then mixed with water.

[0068] In the second method, a wet concrete composition is prepared by mixing each constituent material of the binder system and the aggregate in water.

[0069] According to the present disclosure, the term "mixing" must be understood to be any form of mixing.

[0070] In a preferred embodiment, prior to mixing with the aggregate, a part of the binder composition and at least a part of the water are mixed together.

[0071] The step of mixing with water is carried out at a mass ratio of water to the binder composition (B.) that is included between 0.2 and 0.4, preferably between 0.25 and 0.35.

[0072] Aggregate (A) The aggregate includes a major classification of particulate materials used in construction, including sand, gravel, crushed stone, slag (not granulated), recycled concrete, and geosynthetic aggregate. They serve as a reinforcing material that adds strength to the entire composite material.

[0073] Binder system The binder system (B.) according to the present invention is (B1) at least one lime source between 1% and 34% by dry mass, and (B2) blast furnace slag fine powder between 5% and 75% by dry mass, and (B3) at least one filler between 21% and 90% by dry mass, and (B4) SO3 between 0.1% and 5% by dry mass with respect to the total mass of the constituent materials B1, B2, and B3 and includes.

[0074] Constituent material B1 The binder system according to the present invention contains constituent material B1 in an amount of between 1% and 34% by dry mass, preferably between 3% and 25% by dry mass, more preferably between 5% and 20% by dry mass, and the constituent material B1 is a lime source.

[0075] Preferably, the lime source is Portland cement or lime such as hydraulic lime, calcium hydroxide, slaked lime, quicklime, and lime slurry.

[0076] When the lime source is Portland cement, at least a part thereof is advantageously ultrafine cement having a d of 8 μm or less, preferably 3.5 μm or less. This embodiment is advantageous because it enables an increased compressive strength to be obtained compared to other embodiments. 50

[0077] Constituent material B2 The binder system according to the present invention contains constituent material B2 in an amount of between 5% and 75% by dry mass, preferably between 10% and 65% by dry mass, more preferably between 15% and 50% by dry mass, and even more preferably between 20% and 40% by dry mass, and the constituent material B2 is ground granulated blast-furnace slag (GGBS).

[0078] According to the present invention, the ground granulated blast-furnace slag is a particle mixture of particles having a d of 5 μm or more, preferably less than 15 μm, and optionally, a part of the ground granulated blast-furnace slag is ultrafine, that is, it is made up of particles having a d of 1 μm or more and strictly less than 5 μm. 50 50

[0079] Constituent material B3 The binder system according to the present invention contains constituent material B3 in an amount of between 21% and 90% by dry mass, and the constituent material B3 is a particle mixture of particles having a d of 0.05 μm or more and strictly less than 8 μm, and optionally, preferably between 30% and 80% of the particles, more preferably between 40% and 70% of the particles, and even more preferably between 50% and 60% of the particles are fillers having a d of 8 μm or more and strictly less than 200 μm. 50 50 ​​​​​

[0080] Preferably, the filler is a limestone filler, more preferably, the filler is a natural material sourced from a quarry such as calcite and its polymorphs, such as arragonite or vaterite, and dolomite or precipitated calcium carbonate, and mixtures thereof.

[0081] The dispensing of this filler in combination with the dispensing of GGBS enables the technical effect of reducing the viscosity of the binder composition according to the present invention and of concrete or industrial mortar and increasing the compressive strength.

[0082] Constituent material B4 According to the present invention, the binder composition further comprises SO3 in an amount between 0.1% and 5% by dry mass, based on the total mass of constituent materials B1, B2, and B3. - and further contains.

[0083] SO3 - The content of is determined with respect to the dispensing of 30 constituent materials (B1), (B2) and (B3). In other words, the dry mass percentage of SO3 - is determined by taking into account that the sum of the contents of constituent materials (B1), (B2), and (B3) represents 100% by dry mass.

[0084] Preferably, SO3 - is derived from sodium sulfate, potassium sulfate, calcium sulfate, anhydrous sulfate, recycled gypsum, or mixtures thereof.

[0085] Admixture formulation In the meaning of the present invention, a "rheology enhancing admixture" means a single compound or a mixture of compounds used to control the mixability, rheology, and / or open time of a wet concrete composition or a wet mortar composition containing at least a binder composition, aggregates, and water.

[0086] The content of the rheology enhancer mixture is determined with respect to the proportions of constituent materials a, b, and c. In other words, the dry mass percentage of the rheology enhancer mixture is determined by taking into account that the total content of constituent materials a, b, and c represents 100% in dry mass.

[0087] According to the present invention, the water-reducing polymer (C1) has the following monomer units - Unit UA

[0088]

Chemical formula

[0089] - Unit UB

[0090]

Chemical formula

[0091] - Unit UC

[0092]

Chemical formula

[0093] - Unit UD

[0094]

Chemical formula

[0095] (wherein

[0096]

Chemical formula

[0097] represents the bonding site of the monomer unit, the content of monomer unit UA is between 0 and 40 mol%, the content of monomer unit UB is between 25 and 95 mol%, The content of the monomer unit UC is between 5 and 50 mol%, The content of the monomer unit UD is between 0 and 25 mol%, R1 and R2 are independently hydrogen or methyl, Z1 is a bond, methyl, or ethyl, Z2 is a bond, -CH2CH2O-, -CH2CH2OCH2CH2O-, or -CH2CH2CH2CH2O-, R3 is -(CH2CH2O) m -R4, -(CH(CH3)CH2O) n -R4, or -(CH2CH2OCH(CH3)CH2O) y -R4, m, n, and y are independently integers included between 7 and 100, R4 is hydrogen, methyl, R5 is hydrogen, methyl, or -CH2COOH, R6 is -OH, -OCH2OH, -OCH2CH2OH, -OCH2CH2CH2OH, -OCH2CH(CH3)CH2OH, -OCH2CH2CH2CH2OH, -NHR7, a group having a phosphate functional group, a group having a phosphonic acid functional group, or a group having a sulfonic acid functional group, R7 is a copolymer containing from 2 to 12 carbon atoms and finally one or more heteroatoms, preferably O, N, or S, and being saturated or unsaturated, linear or branched.

[0098] In certain embodiments, the sum of the content of the monomer unit UA, the content of the monomer unit UB, the content of the monomer unit UC, and the content of the monomer unit UD is equal to 100 mol%.

[0099] In another embodiment, the water-reducing polymer (C1) contains at least another monomer unit in an amount of up to 20 mol%. Preferably, the at least another monomer unit results from the polymerization of any unsaturated monomer, and the unsaturated monomer can be copolymerized with any of the monomers contained in the PCE on the condition that the resulting polymer cannot be one of the Tempo ranges of the high-performance water-reducing agent ViscoCrete® manufactured by Sika®.

[0100] Preferably, the amount of the monomer unit UA is between 5 and 35 mol%, more preferably between 10 and 30 mol%, and even more preferably between 15 and 25 mol%.

[0101] Preferably, the amount of the monomer unit UB is between 25 and 95 mol%, more preferably between 35 and 80 mol%, and even more preferably between 45 and 65 mol%.

[0102] Preferably, the amount of the monomer unit UC is between 5 and 50 mol%, more preferably between 15 and 40 mol%, and even more preferably between 20 and 30 mol%.

[0103] Preferably, the amount of the monomer unit UD is between 0 and 25 mol%, more preferably between 5 and 20 mol%, and even more preferably between 10 and 15 mol%.

[0104] In an embodiment where the water-reducing polymer (C1) contains a phosphate functional group, at least some of the constitutional units derived from the carboxylic acid monomer are substituted with phosphoric acid.

[0105] In an embodiment where the water-reducing polymer (C1) contains a phosphonic acid functional group, at least some of the constitutional units derived from the carboxylic acid monomer are substituted with phosphonic acid.

[0106] Preferably, the water-reducing polymer (C1) is anionic, cationic, or zwitterionic.

[0107] Preferably, the water-reducing polymer has a mass molecular weight included between 5000 g / mol -1 and 300000 g / mol -1 .

[0108] In certain embodiments, the water-reducing polymer (C1) is HPEG. HPEG is a copolymer derived from (meth)acrylic acid, itaconic acid monomers, and w-hydroxy-a-methallyl poly(ethylene glycol) macromonomer or w-methoxy-a-methallyl poly(ethylene glycol).

[0109] In this embodiment, the water-reducing polymer (C1) has the following monomer units - Unit UB

[0110]

Chemical formula

[0111] - Unit UC

[0112]

Chemical formula

[0113] - Unit UD

[0114]

Chemical formula

[0115] (wherein

[0116]

Chemical formula

[0117] represents the binding site of the monomer unit, the content of monomer unit UB is between 25 and 95 mol%, the content of monomer unit UC is between 5 and 50 mol%, The content of monomer unit UD is between 0 and 25 mol%, R1 is hydrogen or methyl, R2 is hydrogen, Z1 is methyl, Z2 is a bond, R3 is -(CH2CH2O) m -R4, -(CH(CH3)CH2O) n -R4, or -(CH2CH2OCH(CH3)CH2O) y -R4, m, n, and y are independently integers included between 7 and 100, R4 is hydrogen or methyl, R5 is hydrogen, methyl, or -CH2COOH, R6 is -OH, -OCH2OH, -OCH2CH2OH, -OCH2CH2CH2OH, -OCH2CH(CH3)CH2OH, -OCH2CH2CH2CH2OH, -NHR7, a group having a phosphate functional group, a group having a phosphonic acid functional group, or a group having a sulfonic acid functional group, R7 is a copolymer containing from 2 to 12 carbon atoms and finally one or more heteroatoms, preferably O, N, or S, and being a saturated or unsaturated straight-chain or branched-chain.

[0118] In this embodiment, preferably, the content of monomer unit UB is between 25 and 95 mol%, more preferably between 35 and 80 mol%, even more preferably between 45 and 65 mol%; the content of monomer unit UC is between 5 and 50 mol%, more preferably between 15 and 40 mol%, even more preferably between 20 and 30 mol%; the content of monomer unit UD is between 1 and 25 mol%, more preferably between 5 and 20 mol%, even more preferably between 10 and 15 mol%.

[0119] In another embodiment, the water-reducing polymer (C1) is APEG. APEG is a block copolymer of the A-B-A-B type, where the A structural unit is derived from a maleic acid monomer and the B structural unit is derived from a w-hydroxy-a-allyl poly(ethylene glycol) macromonomer.

[0120] In this embodiment, the water-reducing polymer (C1) has the following monomer units - Unit UA

[0121]

Chemical formula

[0122] - Unit UB

[0123]

Chemical formula

[0124] - Unit UC

[0125]

Chemical formula

[0126] - Unit UD

[0127]

Chemical formula

[0128] (where

[0129]

Chemical formula

[0130] represents the bonding site of the monomer unit, the content of monomer unit UA is between 0 and 40 mol%, the content of monomer unit UB is between 25 and 95 mol%, The content of the monomer unit UC is between 5 and 50 mol%, the content of the monomer unit UD is between 0 and 25 mol%, R1 is hydrogen or methyl, R2 is hydrogen, Z1 is methyl, Z2 is a bond, R3 is -(CH2CH2O) m -R4, -(CH(CH3)CH2O) n -R4, or -(CH2CH2OCH(CH3)CH2O) y -R4, m, n, and y are independently integers included between 7 and 100, R4 is hydrogen or methyl, R5 is hydrogen, methyl, or -CH2COOH, R6 is -OH, -OCH2OH, -OCH2CH2OH, -OCH2CH2CH2OH, -OCH2CH(CH3)CH2OH, -OCH2CH2CH2CH2OH, -NHR7, a group having a phosphate functional group, a group having a phosphonic acid functional group, or a group having a sulfonic acid functional group, R7 is a copolymer containing from 2 to 12 carbon atoms and finally one or more heteroatoms, preferably O, N, or S, and being a saturated or unsaturated straight-chain or branched-chain).

[0131] In this embodiment, preferably, the content of the monomer unit UA is between 5 and 35 mol%, more preferably between 10 and 30 mol%, even more preferably between 15 and 25 mol%, preferably, the content of the monomer unit UB is between 25 and 95 mol%, more preferably between 35 and 80 mol%, even more preferably between 45 and 65 mol%, the content of the monomer unit UC is between 5 and 50 mol%, more preferably between 15 and 40 mol%, even more preferably between 20 and 30 mol%, and the content of the monomer unit UD is between 1 and 25 mol%, more preferably between 5 and 20 mol%, even more preferably between 10 and 15 mol%.

[0132] In another embodiment, the water-reducing polymer (C1) is VPEG. VPEG is a vinyl ether-based PCE.

[0133] In this embodiment, the water-reducing polymer (C1) has the following monomer units - Unit UB

[0134] [Chemical formula]

[0135] - Unit UC

[0136] [Chemical formula]

[0137] - Unit UD

[0138] [Chemical formula]

[0139] (wherein,

[0140] [Chemical formula]

[0141] represents the binding site of the monomer unit, the content of monomer unit UB is between 25 and 95 mol%, the content of monomer unit UC is between 5 and 50 mol%, the content of monomer unit UD is between 0 and 25 mol%, R1 is hydrogen or methyl, R2 is hydrogen, Z1 is a bond, Z2 is a bond, -CH2CH2O-, -CH2CH2OCH2CH2O-, or -CH2CH2CH2CH2O-, R3 is -(CH2CH2O) m -R4, -(CH(CH3)CH2O) n -R4, or -(CH2CH2OCH(CH3)CH2O) y -R4, m, n, and y are independently integers between 7 and 100, inclusive; R4 is hydrogen or methyl; R5 is hydrogen, methyl, or —CH2COOH; R6 is -OH, -OCH2OH, -OCH2CH2OH, -OCH2CH2CH2OH, -OCH2CH2CH2OH, -OCH2CH(CH3)CH2OH, -OCH2CH2CH2CH2OH, -NHR7, a group having a phosphoric acid functional group, a group having a phosphonic acid functional group, or a group having a sulfonic acid functional group; R7 is a copolymer containing from 2 to 12 carbon atoms and finally one or more heteroatoms, preferably O, N, or S, which may be saturated or unsaturated, linear or branched.

[0142] In this embodiment, preferably the amount of monomer units UB is between 25 and 95 mol%, more preferably between 35 and 80 mol%, even more preferably between 45 and 65 mol%, the amount of monomer units UC is between 5 and 50 mol%, more preferably between 15 and 40 mol%, even more preferably between 20 and 30 mol%, and the amount of monomer units UD is between 1 and 25 mol%, more preferably between 5 and 20 mol%, even more preferably between 10 and 15 mol%.

[0143] In another embodiment, the water-reducible polymer (C1) is IPEG, which is a copolymer derived from acrylic acid monomers and from isoprenol poly(ethylene glycol) macromonomers.

[0144] In this embodiment, the water-reducing polymer (C1) comprises the following monomer units: - Unit UB

[0145] [ka]

[0146] - Unit UC

[0147]

Chem.

[0148] - Unit UD

[0149]

Chem.

[0150] (wherein,

[0151]

Chem.

[0152] represents the bonding site of the monomer unit, the content of the monomer unit UB is between 25 and 95 mol%, the content of the monomer unit UC is between 5 and 50 mol%, the content of the monomer unit UD is between 0 and 25 mol%, R1 is hydrogen or methyl, R2 is hydrogen, Z1 is ethyl, Z2 is a bond, R3 is -(CH2CH2O) m -R4, -(CH(CH3)CH2O) n -R4, or -(CH2CH2OCH(CH3)CH2O) y -R4, m, n, and y are independently integers included between 7 and 100, R4 is hydrogen or methyl, R5 is hydrogen, methyl, or -CH2COOH, R6 is -OH, -OCH2OH, -OCH2CH2OH, -OCH2CH2CH2OH, -OCH2CH2CH2OH, -OCH2CH(CH3)CH2OH, -OCH2CH2CH2CH2OH, -NHR7, a group having a phosphoric acid functional group, a group having a phosphonic acid functional group, or a group having a sulfonic acid functional group; R7 is a copolymer containing from 2 to 12 carbon atoms and finally one or more heteroatoms, preferably O, N, or S, which may be saturated or unsaturated, linear or branched.

[0153] In this embodiment, preferably the amount of monomer units UB is between 25 and 95 mol%, more preferably between 35 and 80 mol%, even more preferably between 45 and 65 mol%, the amount of monomer units UC is between 5 and 50 mol%, more preferably between 15 and 40 mol%, even more preferably between 20 and 30 mol%, and the amount of monomer units UD is between 1 and 25 mol%, more preferably between 5 and 20 mol%, even more preferably between 10 and 15 mol%.

[0154] According to the present invention, the rheology enhancing admixture optionally comprises a wetting agent and / or a surfactant, wherein the wetting agent and surfactant reduce the surface tension of water to 68 mN.m. -1 The wetting agent is reduced to 60 g.mol -1 to 130 g.mol -1 and the surfactant is selected from the group consisting of glycol compounds having a molecular weight comprised between 131 g.mol -1 to 300 g.mol -1 The molecular weight is between .

[0155] Wetting agents and surfactants may be cationic, anionic, or nonionic, preferably nonionic. Considered nonionic are species that exhibit an overall neutral charge, i.e., have an equal number of positive and negative charges, or are completely absent of positive or negative charges.

[0156] The surface tension can be reduced by the following methods: · Prepare a solution S1 of a wetting agent or surfactant at a concentration of 0.5 g / L in Milli-Q water -1 · Measure the surface tension of solution S1 using the Du Noüy ring method · Measure the surface tension of Milli-Q water using the same Du Noüy ring method at the same temperature and pressure · Calculate the percentage of the variation in surface tension between Milli-Q water and solution S1 It is measured by

[0157] In a preferred embodiment, the wetting agent is selected from, preferably consisting of, the group comprising 2-methyl-2,4-pentanediol (MPD), diethylene glycol (DEG), neopentyl glycol (NPG), and mixtures thereof.

[0158] In a preferred embodiment, the surfactant may be 2,4,7,9-tetramethyldec-5-yne-4,7-diol.

[0159] Optional other constituent materials The binder composition is advantageously, preferably, fortified with one or several other constituent materials, in particular functional additives, selected from the following list.

[0160] · Water retention agent The water retention agent has the property of retaining the mixing water before coagulation. The water is trapped in the wet compound paste to improve its binding. To a certain extent, the water is not absorbed much by the support.

[0161] The water retention agent preferably includes modified cellulose, modified guar, modified cellulose ether, and / or guar ether, and mixtures thereof, more preferably selected from the group consisting of methyl cellulose, methyl hydroxypropyl cellulose, methyl hydroxyethyl-cellulose, and mixtures thereof.

[0162] · Rheology agent Possible rheology agents (also called "thickeners") are preferably selected from the group consisting of, more preferably consisting of, starch ethers, cellulose ethers, and / or gums (such as welan, guar, xanthan, succinoglycan, etc.), preferably modified polysaccharides from among modified starches, polyvinyl alcohol, polyacrylamide, sepiolite, and mixtures thereof.

[0163] · Defoamer / anti-foaming agent Possible defoamers are preferably selected from the group consisting of, more preferably consisting of, polyether polyols and mixtures thereof.

[0164] · Biocide Possible biocides are preferably selected from the group consisting of, more preferably consisting of, mineral oxides such as zinc oxide and mixtures thereof.

[0165] · Pigment Possible pigments are preferably selected from the group consisting of, more preferably consisting of, TiO2, iron oxide, and mixtures thereof.

[0166] · Flame retardant Flame retardants (or fire retardants) make it possible to increase fire resistance and / or reduce the rate of flame spread of the composition.

[0167] · Air entraining agent Air entraining agents (surfactants) are preferably selected from the group consisting of, more preferably consisting of, natural resins, sulfided or sulfonated compounds, synthetic detergents, organic fatty acids, and mixtures thereof, more preferably from the group consisting of, more preferably consisting of, lignosulfonates, basic soaps of fatty acids, and mixtures thereof, more preferably from the group consisting of, more preferably consisting of, olefin sulfonic acids, sodium lauryl sulfate, and mixtures thereof.

[0168] Retarder The retarding agent is advantageously chosen in the group comprising, more preferably consisting of, tartaric acid and its salts: sodium or potassium salts, citric acid and its salts: sodium (trisodium citrate), and mixtures thereof.

[0169] In addition, other constituent materials include: Superplasticizer ·fiber ·Dispersion powder Polymer resins Complexing agents Polyol-based drying shrinkage reducing agent may be.

[0170] The total content of these optional other constituent materials in the dry concrete composition or dry industrial mortar composition is preferably comprised between 0.1% and 10% by weight of the total weight of the dry concrete composition or dry industrial mortar composition. [Example]

[0171] Preparation of concrete composition and trial of concrete composition The concrete composition was prepared by the following procedure: First, the aggregate and binder were mixed for 1 minute. The admixture system was added to the water, and the entire amount of water + admixture system was added during mixing. The concrete was mixed for an additional 2 minutes.

[0172] The CEM mortar composition (mortar concrete equivalent) was prepared according to "Method of the concrete equivalent mortar (CEM) - A new tool to design concrete containing admixture" - A. Schwartzentruber and C. Catherine

[1999] Materials and Structures, Vol. 33, October 2000.

[0173] The time flow of the wet concrete composition was measured according to the experimental standard "XP P18-469-Cone outflow time" published by AFNOR in January 2019. By conducting trials every 30 minutes, the time flow was monitored up to a maximum of 1 hour and 30 minutes. Before each new trial, the concrete was mixed for 30 seconds.

[0174] The time flow of CEM was also measured according to the experimental standard "XP P18-469-Cone outflow time" published by AFNOR in January 2019, except that the cone had an inlet opening with a diameter of 15.0 cm, an outlet opening with a diameter of 3.9 cm, and a height of 12.0 cm.

[0175] The slump test was performed using an Abrams cone according to the standard NF EN 12350-2. By conducting trials every 30 minutes, the slump was monitored up to a maximum of 1 hour and 30 minutes. Before each new trial, the concrete was mixed for 30 seconds.

[0176] The spread of CEM mortar was measured using an MBE cone according to "Method of the concrete equivalent mortar (CEM)-A new tool to design concrete containing admixture" - A. Schwartzentruber and C. Catherine

[1999] Materials and Structures, Vol. 33, October 2000.

[0177] The water-reducing polymers used in the examples are HPEG RB1050 (registered trademark) and HPEG PC1901 manufactured by Marla (registered trademark), Chryso (registered trademark) Fluid Optima 100 manufactured by Saint Gobain, and Viscocrete (registered trademark) tempo 10 manufactured by Sika.

[0178] (Example 1: Influence of water-reducing polymers) Three types of concrete compositions were prepared according to Table 1 below.

[0179] [Table 1]

[0180] The time flow and slump after 0 minutes, 30 minutes, 60 minutes, and 90 minutes after mixing are described in Table 2 below.

[0181] [Table 2]

[0182] As can be seen from Table 2, the use of HPEG or Optima 100 makes it possible to maintain the time flow and slump of the concrete, while the use of Viscocrete® Tempo 10 results in concrete that hardens before 30 minutes. This indicates that the use of HPEG or Optima increases the open time and rheology.

[0183] (Example 2: Effect of Wetting Agent on CEM) Five types of CEM were prepared according to Table 3 below.

[0184] [Table 3]

[0185] These MBEs were mixed for 90 seconds after the introduction of water, then the mixing was stopped in order to perform the time flow and spread tests, and then the mixing was restarted. As shown in Figure 1, the energy required for the mixing of each sample was measured. As can be seen from Figure 1, the energy required for the mixing of MBEs is lower for MBEs (MBE2, MBE3, MBE4, and MBE5) containing a wetting agent or surfactant (Constituent Material C2) after 50 s.

[0186] After 90 seconds of mixing, the spread and flow time of each MBE were measured. The results are shown in Table 4 below.

[0187] [Table 4]

[0188] The addition of a wetting agent or surfactant makes it possible to reduce the mixing time required to obtain acceptable rheology and viscosity characteristics. What this means is that the addition of a wetting agent or surfactant improves miscibility and thus makes it possible to obtain a lower viscosity with a smaller aqueous system and a shorter mixing time.

[0189] (Example 3: Effect of Wetting Agent on Concrete Composition) Additional concrete compositions were prepared according to Table 5 below.

[0190] [Table 5]

[0191] Immediately after mixing, the spread and flow time of each wetted concrete were measured. The results are shown in Table 6 below.

[0192] [Table 6]

[0193] The addition of a wetting agent makes it possible to reduce the mixing time required to obtain acceptable rheology and viscosity characteristics. What this means is that the addition of a wetting agent improves miscibility and thus makes it possible to obtain a lower viscosity with a smaller aqueous system and a shorter mixing time.

Claims

1. A method for preparing a wet concrete composition, A. At least one type of aggregate, B. The wet concrete composition 1 m 3 Preferably 1 m³ of the wet concrete composition, weighing 400 kg or less per m³. 3 A binder system in an amount of less than 370 kg per unit, C. Admixture composition and This includes the step of mixing it with water. The binder system (B.) is prepared from at least some of the different constituent materials of the binder system before or in the process of mixing, and the constituent materials are incorporated separately and / or in the form of a premix. The aforementioned binder system (B) (B1) At least one lime source in a dry mass of between 1% and 34%, (B2) Blast furnace slag fine powder with a dry weight of between 5% and 75%, (B3) At least one filler in a dry mass between 21% and 90%, (B4) SO4 between 0.1% and 5% by dry mass relative to the total mass of constituent materials B1, B2, and B3 3 and Includes, The blast furnace slag fine powder is 5 μm or larger and strictly less than 15 μm. 50 Particles having, optionally, d between 1 μm and strictly less than 5 μm, in mass between 0.1% and 100% with respect to the total mass of the blast furnace slag fine powder. 50 A particle mixture containing particles having The filler material is d, which is 0.05 μm or larger and strictly less than 8 μm. 50 Particles having, optionally, d, which are 0.1% to 50% by mass of the total mass of the filler, and are 8 μm or larger and strictly less than 200 μm. 50 A particle mixture containing particles having d 50 The measurement was performed using a wet method by laser diffraction analysis, also known as laser diffraction spectroscopy, with a laser diffraction analyzer such as the "Mastersizer 2000" commercially available from MALVERN. The aforementioned admixture (C.) (C1) At least one water-reducing polymer, (C2) Optionally, a wetting agent and / or a surfactant Includes, The water-reducing polymer (C1) is polyethylene glycol having terminal phosphonic acid groups, and / or the following monomer units. - Unit UA 【Chemistry 1】 - Unit UB 【Chemistry 2】 - Unit UC 【Transformation 3】 - Unit UD 【Chemistry 4】 (In the formula, 【Transformation 5】 This represents the bonding site of the monomer unit, The amount of monomer unit UA is between 0 and 40 mol%, The amount of monomer unit UB is between 25 and 95 mol%, The amount of monomer unit UC is between 5 and 50 mol%, The amount of monomer unit UD is between 0 and 25 mol%, R 1 and R 2 are each independently hydrogen or methyl, Z 1 It is a bond, methyl, or ethyl, Z 2 This is a bond, -CH 2 CH 2 O-, -CH 2 CH 2 OCH 2 CH 2 O-, or -CH 2 CH 2 CH 2 CH 2 It is O-, R 3 is, -(CH 2 CH 2 O) m -R 4 ,-(CH(CH 3 )CH 2 O) n -R 4 , or -(CH 2 CH 2 OCH(CH 3 )CH 2 O) y -R 4 And, m, n, and y are independent integers between 7 and 100. R 4 These are hydrogen and methyl, R 5 is hydrogen, methyl, or -CH 2 COOH R 6 -OH, -OCH 2 OH, -OCH 2 CH 2 OH, -OCH 2 CH 2 CH 2 OH, -OCH 2 CH(CH 3 )CH 2 OH, -OCH 2 CH 2 CH 2 CH 2 OH, -NHR 7 , a group having a phosphate functional group, a group having a phosphonic acid functional group, or a group having a sulfonic acid functional group, R 7 This copolymer comprises two to twelve carbon atoms and ultimately one or more heteroatoms, preferably O, N, or S, and is saturated or unsaturated, in a linear or branched chain. The wetting agent and / or the surfactant raises the surface tension of water to 68 mN.m -1 Further reducing the amount, the wetting agent is selected from the group comprising glycol compounds, preferably 60 g.mol. -1 From 130 g.mol -1 The surfactant has a molecular weight within the range of 131 g.mol. -1 From 300g.mol -1 Having a molecular weight included in between, The step of mixing with water is performed in a mass ratio of water to the binder system (B) that is between 0.2 and 0.4, more preferably between 0.25 and 0.

35. method.

2. The method according to claim 1, wherein the aggregate (A) is sand and / or gravel.

3. The method according to claim 1, wherein the lime source (B1) is Portland cement or lime such as hydraulic lime, calcium hydroxide, slaked lime, quicklime, and lime slurry.

4. The lime source (B1) is Portland cement, and at least a portion thereof is d 8 μm or less, preferably 3.5 μm or less. 50 It is an ultrafine cement having the following properties: d 50 The method according to claim 1, wherein the measurement is performed by laser diffraction analysis, also known as laser diffraction spectroscopy, using a wet method and a laser diffraction analyzer such as the "Mastersizer 2000" commercially available from MALVERN.

5. The method according to claim 1, wherein the filler (B3) is a natural material obtained from a quarry, such as calcite and its polymorphs, for example, aragonite or vaterite, and dolomite or precipitated calcium carbonate, and mixtures thereof.

6. The method according to claim 1, wherein the water-reducing polymer is anionic, cationic, or zwitterionic.

7. A wet concrete composition comprising aggregate (A), water (D), and a binder system (B), wherein the binder system (B) is 1 m³ of the wet concrete composition. 3 Preferably 1 m³ of the wet concrete composition, weighing 400 kg or less per m³. 3 A method for controlling the mixability, rheology, and / or open time of a wet concrete composition in an amount of less than 370 kg per unit, (B1) At least one lime source in a dry mass of between 1% and 34%, (B2) Blast furnace slag fine powder with a dry weight of between 5% and 75%, (B3) At least one filler in a dry mass between 21% and 90%, (B4) SO4 between 0.1% and 5% by dry mass relative to the total mass of constituent materials B1, B2, and B3 3 and Includes, The blast furnace slag fine powder is 5 μm or larger and strictly less than 15 μm. 50 Particles having, optionally, d between 1 μm and strictly less than 5 μm, in mass between 0.1% and 100% with respect to the total mass of the blast furnace slag fine powder. 50 A particle mixture containing particles having The filler material is d, which is 0.05 μm or larger and strictly less than 8 μm. 50 Particles having, optionally, d, which are 0.1% to 50% by mass of the total mass of the filler, and are 8 μm or larger but strictly less than 200 μm. 50 A particle mixture containing particles having d 50 The measurement was performed using a wet method by laser diffraction analysis, also known as laser diffraction spectroscopy, with a laser diffraction analyzer such as the "Mastersizer 2000" commercially available from MALVERN. The mass ratio of water to the binder system (B.) is between 0.2 and 0.4, more preferably between 0.25 and 0.

35. The method includes adding an admixture mixture (C.) to the wet concrete composition, wherein the admixture mixture (C.) is (C1) At least one water-reducing polymer, (C2) Optionally, a wetting agent and / or a surfactant Includes, The water-reducing polymer (C1) is polyethylene glycol having terminal phosphonic acid groups, and / or the following monomer units. - Unit UA 【Transformation 6】 - Unit UB 【Transformation 7】 - Unit UC 【Transformation 8】 - Unit UD 【Chemistry 9】 (In the formula, 【Chemistry 10】 This represents the bonding site of the monomer unit, The amount of monomer unit UA is between 0 and 40 mol%, The amount of monomer unit UB is between 25 and 95 mol%, The amount of monomer unit UC is between 5 and 50 mol%, The amount of monomer unit UD is between 0 and 25 mol%, R 1 and R 2 These are independently hydrogen or methyl, Z 1 It is a bond, methyl, or ethyl, Z 2 This is a bond, -CH 2 CH 2 O-, -CH 2 CH 2 OCH 2 CH 2 O-, or -CH 2 CH 2 CH 2 CH 2 It is O-, R 3 is -(CH 2 CH 2 O) m -R 4 、-(CH(CH 3 )CH 2 O) n -R 4 、 or -(CH 2 CH 2 OCH(CH 3 )CH 2 O) y -R 4 and m, n, and y are independent integers between 7 and 100. R 4 These are hydrogen and methyl, R 5 is hydrogen, methyl, or -CH 2 COOH R 6 -OH, -OCH 2 OH, -OCH 2 CH 2 OH, -OCH 2 CH 2 CH 2 OH, -OCH 2 CH(CH 3 )CH 2 OH, -OCH 2 CH 2 CH 2 CH 2 OH, -NHR 7 , a group having a phosphate functional group, a group having a phosphonic acid functional group, or a group having a sulfonic acid functional group, R 7 This copolymer comprises two to twelve carbon atoms and ultimately one or more heteroatoms, preferably O, N, or S, and is saturated or unsaturated, in a linear or branched chain. The wetting agent and / or the surfactant raises the surface tension of water to 68 mN.m -1 Further reducing the amount, the wetting agent is selected from the group comprising glycol compounds, preferably 60 g.mol. -1 From 130 g.mol -1 Having a molecular weight included in between, The aforementioned surfactant is 131 g.mol -1 From 300g.mol- 1 Having a molecular weight included in between, method.

8. The use of admixture formulation (C.), (C1) At least one water-reducing polymer, (C2) Optionally, a wetting agent and / or a surfactant Includes, The water-reducing polymer (C1) is polyethylene glycol having terminal phosphonic acid groups, and / or the following monomer units. - Unit UA 【Chemistry 11】 - Unit UB 【Chemistry 12】 - Unit UC 【Chemistry 13】 - Unit UD 【Chemistry 14】 (In the formula, 【Chemistry 15】 This represents the bonding site of the monomer unit, The amount of monomer unit UA is between 0 and 40 mol%, The amount of monomer unit UB is between 25 and 95 mol%, The amount of monomer unit UC is between 5 and 50 mol%, The amount of monomer unit UD is between 0 and 25 mol%, R 1 and R 2 These are independently hydrogen or methyl, Z 1 It is a bond, methyl, or ethyl, Z 2 This is a bond, -CH 2 CH 2 O-, -CH 2 CH 2 OCH 2 CH 2 O-, or -CH 2 CH 2 CH 2 CH 2 It is O-, R 3 is, -(CH 2 CH 2 O) m -R 4 ,-(CH(CH 3 )CH 2 O) n -R 4 , or -(CH 2 CH 2 OCH(CH 3 )CH 2 O) y -R 4 And, m, n, and y are independent integers between 7 and 100. R 4 These are hydrogen and methyl, R 5 is hydrogen, methyl, or -CH 2 COOH R 6 -OH, -OCH 2 OH, -OCH 2 CH 2 OH, -OCH 2 CH 2 CH 2 OH, -OCH 2 CH(CH 3 )CH 2 OH, -OCH 2 CH 2 CH 2 CH 2 OH, -NHR 7 , a group having a phosphate functional group, a group having a phosphonic acid functional group, or a group having a sulfonic acid functional group, R 7 This copolymer comprises two to twelve carbon atoms and ultimately one or more heteroatoms, preferably O, N, or S, and is saturated or unsaturated, in a linear or branched chain. The wetting agent and / or the surfactant raises the surface tension of water to 68 mN.m -1 Further reducing the amount, the wetting agent is selected from the group comprising glycol compounds, preferably 60 g.mol. -1 From 130 g.mol -1 The surfactant has a molecular weight within the range of 131 g.mol. -1 From 300g.mol -1 Having a molecular weight included in between, To control the mixability, rheology, and / or open time of the wet concrete composition, the wet concrete composition contains aggregate (A.), water (D.), and binder system (B.) in an amount of 400 kg or less per 1 m³ of the wet concrete composition, preferably less than 370 kg per 1 m³ of the wet concrete composition. (B1) At least one lime source in a dry mass of between 1% and 34%, (B2) Blast furnace slag fine powder with a dry weight of between 5% and 75%, (B3) At least one filler in a dry mass between 21% and 90%, (B4) SO4 between 0.1% and 5% by dry mass relative to the total mass of constituent materials B1, B2, and B3 3 and Includes, The blast furnace slag fine powder is 5 μm or larger and strictly less than 15 μm. 50 Particles having, optionally, d between 1 μm and strictly less than 5 μm, in mass between 0.1% and 100% with respect to the total mass of the blast furnace slag fine powder. 50 A particle mixture containing particles having The filler material is d, which is 0.05 μm or larger and strictly less than 8 μm. 50 Particles having, optionally, d, which are 0.1% to 50% by mass of the total mass of the filler, and are 8 μm or larger but strictly less than 200 μm. 50 A particle mixture containing particles having d 50 The measurement was performed using a wet method by laser diffraction analysis, also known as laser diffraction spectroscopy, with a laser diffraction analyzer such as the "Mastersizer 2000" commercially available from MALVERN. The mass ratio of water to the binder system (B) is between 0.2 and 0.4, more preferably between 0.25 and 0.

35. use.

9. A. At least one type of aggregate, B. The wet concrete composition 1 m 3 Preferably 1 m³ of the wet concrete composition, weighing 400 kg or less per m³. 3 A binder system in an amount of less than 370 kg per unit, C. Mixtures containing admixtures, D. Water and A wet concrete composition comprising, The aforementioned binder system (B) (B1) At least one lime source in a dry mass of between 1% and 34%, (B2) Blast furnace slag fine powder with a dry weight of between 5% and 75%, (B3) At least one filler in a dry mass between 21% and 90%, (B4) SO4 between 0.1% and 5% by dry mass relative to the total mass of constituent materials B1, B2, and B3 3 and Includes, The blast furnace slag fine powder is 5 μm or larger and strictly less than 15 μm. 50 Particles having, optionally, d between 1 μm and strictly less than 5 μm, in mass between 0.1% and 100% with respect to the total mass of the blast furnace slag fine powder. 50 A particle mixture containing particles having The filler material is d, which is 0.05 μm or larger and strictly less than 8 μm. 50 Particles having, optionally, d, which are 0.1% to 50% by mass of the total mass of the filler, and are 8 μm or larger but strictly less than 200 μm. 50 A particle mixture containing particles having d 50 The measurement was performed using a wet method by laser diffraction analysis, also known as laser diffraction spectroscopy, with a laser diffraction analyzer such as the "Mastersizer 2000" commercially available from MALVERN. The aforementioned admixture (C.) (C1) At least one water-reducing polymer, (C2) Optionally, a wetting agent and / or a surfactant Includes, The water-reducing polymer (C1) is polyethylene glycol having terminal phosphonic acid groups, and / or the following monomer units. - Unit UA 【Chemistry 16】 - Unit UB 【Chemistry 17】 - Unit UC [Chemistry 18] - Unit UD 【Chemistry 19】 (In the formula, 【Chemistry 20】 This represents the bonding site of the monomer unit, The amount of monomer unit UA is between 0 and 40 mol%, The amount of monomer unit UB is between 25 and 95 mol%, The amount of monomer unit UC is between 5 and 50 mol%, The amount of monomer unit UD is between 0 and 25 mol%, R 1 and R 2 These are independently hydrogen or methyl, Z 1 It is a bond, methyl, or ethyl, Z 2 This is a bond, -CH 2 CH 2 O-, -CH 2 CH 2 OCH 2 CH 2 O-, or -CH 2 CH 2 CH 2 CH 2 It is O-, R 3 is, -(CH 2 CH 2 O) m -R 4 ,-(CH(CH 3 )CH 2 O) n -R 4 , or -(CH 2 CH 2 OCH(CH 3 )CH 2 O) y -R 4 And, m, n, and y are independent integers between 7 and 100. R 4 These are hydrogen and methyl, R 5 is hydrogen, methyl, or -CH 2 COOH R 6 -OH, -OCH 2 OH, -OCH 2 CH 2 OH, -OCH 2 CH 2 CH 2 OH, -OCH 2 CH(CH 3 )CH 2 OH, -OCH 2 CH 2 CH 2 CH 2 OH, -NHR 7 , a group having a phosphate functional group, a group having a phosphonic acid functional group, or a group having a sulfonic acid functional group, R 7 This copolymer comprises two to twelve carbon atoms and ultimately one or more heteroatoms, preferably O, N, or S, and is saturated or unsaturated, in a linear or branched chain. The wetting agent and / or the surfactant raises the surface tension of water to 68 mN.m -1 Further reducing the amount, the wetting agent is selected from the group comprising glycol compounds, preferably 60 g.mol. -1 From 130 g.mol -1 The surfactant has a molecular weight within the range of 131 g.mol. -1 From 300g.mol -1 Having a molecular weight included in between, The mass ratio of water to the binder system (B) is between 0.2 and 0.4, more preferably between 0.25 and 0.

35. Wet concrete composition.

10. A hardened concrete composition obtained from the wet concrete composition described in claim 9.

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