Blast furnace slag fine powder with enhanced properties

Abstract

The present invention relates to a fineness between 7.5 μm and 12 μm, having a Braine value between 4500 and 6500. 50 and d between 19 μm and 29 μm 85 This invention relates to blast furnace slag fine powder characterized by having the following properties.

Description

[Technical Field]

[0001] This disclosure relates to the field of hydraulic binder compositions comprising blast furnace slag powder (GGBS) for preparing construction products. In particular, the technical field of the present invention relates to hydraulic mineral binders comprising blast furnace slag powder (GGBS or slag) used in compositions that can be solidified and hardened, such as mortar and concrete. [Background technology]

[0002] The production of ordinary Portland cement (OPC) has a significant negative impact on the environment due to the emission of large amounts of carbon dioxide. Cement production inherently generates CO2 through the decarboxylation reaction of limestone while the raw materials are fired at very high temperatures (1450°C) in a furnace (Equation (1)). CaCO3(s) → CaO(s) + CO2(g) (1)

[0003] Furthermore, carbon dioxide is emitted from the combustion of fossil fuels required to heat the furnaces. Adding the additional emissions from crushing, Portland cement yields almost one ton of CO2 per ton. Overall, the cement industry accounts for 7-9% of global carbon dioxide emissions. [Overview of the project] [Problems that the invention aims to solve]

[0004] The harmful effects of Portland cement are exacerbated by the high water demand required for complete hydration.

[0005] Furthermore, handling Portland cement can cause health problems (such as allergies) due to its high alkalinity (pH 13 or higher). Additionally, harmful elements such as hexavalent chromium (Cr(VI)) may be released during mixing, which is also toxic to workers. While cement powder usually contains Cr(VI) reducing agents (such as iron sulfate), their effects are limited in duration. Construction workers, especially those in developing countries, are not expected to frequently check the expiration dates for such treatments.

[0006] Most current research on new binders aims to replace cement with binders that have a less environmental impact in various applications. One approach is to use resources without expensive processing, such as by-products from other industries (which are waste for some industries but a major resource for others). This applies to blast furnace slag, a by-product of the iron industry. By grinding this product into a fine powder (GGBS), a cementitious material can be obtained that can be used as a partial substitute for cement, or used alone by adding some chemical activators (such as alkalis or sulfates).

[0007] It is important to note that the use of GGBS is not only environmentally friendly, but also leads to several enhanced properties, including high resistance to sulfate attacks, low permeability, excellent resistance in chemically aggressive environments, low heat of hydration (necessary for large structures), generally excellent durability, and the potential for immobilization of heavy metals or radionuclides.

[0008] Another advantage of GGBS-based products is the low water requirement for obtaining suitable rheological properties. This is important from both environmental and social perspectives. In fact, water resources are dwindling dramatically worldwide, not just in arid regions, and this is particularly linked to geopolitical tensions and wars. In this regard, given the vast amounts of cementitious material consumed globally, the benefit of reducing the amount of kneading water used in cementitious materials is not anecdotal.

[0009] Hydraulic binders containing GGBS in amounts between 36% and 95% by mass, and Portland cement clinker, are known as CEM III. Literature WO 2011 / 055063 A1 discloses a hydraulic binder containing two different types of GGBS, one having a fineness of less than 6000 Blaine value and the other having a fineness of 6000 or more Blaine value. This hydraulic binder can overcome some of the drawbacks of conventional hydraulic binders containing GGBS, such as the formation of excess ettringite or unreacted calcium sulfate, which causes undesirable expansion of the construction material obtained from the conventional hydraulic binder, resulting in reduced strength and durability.

[0010] While these hydraulic binders provide satisfaction with respect to the problems addressed, GGBS-based hydraulic binders can be further improved, particularly in terms of rheology, solidification time, and water requirements.

[0011] In this context, the present invention aims to address at least one of the above-mentioned problems and / or needs by achieving at least one of the following objectives: O1. To provide a slag-based binder or a mortar or concrete composition comprising the slag-based binder, which is an attractive alternative to an OPC-based composition. O2. To provide a slag-based binder or a mortar or concrete composition containing the slag-based binder, which is more acceptable than an OPC-based composition in terms of hygiene and safety issues. O3. To provide construction products such as slag-based binders or mortar compositions, concrete compositions, dry concrete compositions, and dry mortar compositions containing the slag-based binder, and to produce a wet formulation having appropriate rheological properties, that is, a stable rheology (excellent workability) during the normal setting time (e.g., several minutes to several hours) required by the user of the wet formulation, and to reduce the risk of compromising the water / binder ratio and the mechanical properties of the hardened material obtained from this wet formulation. O4. To provide a slag-based binder or a mortar or concrete composition containing the slag-based binder, and to produce a hardened material having the required mechanical properties, particularly an acceptable initial strength (e.g., 24 hours). O5. To provide a slag-based binder or a mortar or concrete composition containing the slag-based binder, and to produce a hardened material having the required durability.

Means for Solving the Problems

[0012] The fine particle size composed between a Blaine value of 4500 and a Blaine value of 6500, and d is between 7.5 μm and 12 μm 50 and d is between 19 μm and 29 μm 85 The blast furnace slag fine powder, characterized by having the above, has achieved at least one of the above objects.

[0013] The present invention also relates to a hydraulic binder composition containing the above-mentioned blast furnace slag fine powder.

[0014] The present invention further relates to a dry industrial mortar composition or a dry concrete composition containing at least one aggregate and the above-mentioned hydraulic binder composition.

[0015] In another aspect, the present invention is directed to a wet industrial mortar formulation or a wet concrete formulation containing at least one aggregate, the above-mentioned hydraulic binder composition, and water.

[0016] In yet another aspect, a hardened industrial mortar product or a hardened concrete product obtained from the wet industrial mortar formulation described above is proposed.

[0017] The present invention also relates to a method for preparing the wet industrial mortar formulation described above, which includes the step of mixing water, at least one aggregate, and the hydraulic binder composition described above, wherein the hydraulic binder composition is prepared in situ from different components of the separately provided hydraulic binder composition and / or in the form of a premix before or during the mixing step.

[0018] Definitions According to the terms used in this specification, the following non-limiting definitions must be considered.

[0019] "Binder" refers to a "hydraulic binder", which means any substance that hardens by simply adding water, such as cement.

[0020] "Cement" is understood to mean a powdery substance made for use in the manufacture of mortar or concrete. They are mineral binders and may contain no organic compounds. It refers to any ordinary cement, which includes blends of ordinary Portland cement, ordinary Portland cement, pozzolanic substances and / or fillers, and alkali-activated-based cement.

[0021] "Clinker" is understood as the main constituent phase of ordinary Portland cement obtained from the co-firing of limestone and aluminosilicate sources.

[0022] "Mortar" and "concrete" refer to substances composed of a binder, aggregates such as sand, and other components such as admixtures.

[0023] "Dry industrial mortar composition or dry concrete composition" refers to a substance composed of a binder, aggregates such as sand and gravel, and other components such as admixtures.

[0024] "Wet industrial mortar formulation or wet concrete formulation" refers to a substance composed of a binder, aggregates such as sand and gravel, and other components such as admixtures and water.

[0025] "Hardened industrial mortar product or hardened concrete product" refers to a hardened product obtained from a wet industrial mortar composition after reaction and evaporation of water.

[0026] "d 10 " gives the size of the median in the particle size distribution of a substance (usually in micrometers for cementitious materials). This means that 10% of the particles have a size less than the d 10 value, and 90% of the particles have a size greater than the d 10 value. The measurement of d 10 is performed by laser diffraction analysis, also known as laser diffraction spectroscopy, and is carried out by a dry method using a laser diffraction analyzer such as "SYMPATEC" commercialized by SYMPATEC.

[0027] "d 50 " gives the size of the median in the particle size distribution of a substance (usually in micrometers for cementitious materials). This means that 50% of the particles have a size less than the d 50 value, and 50% of the particles have a size greater than the d 50 value. The measurement of d 50 is performed by laser diffraction analysis, also known as laser diffraction spectroscopy, and is carried out by a dry method using a laser diffraction analyzer such as "SYMPATEC" commercialized by SYMPATEC.

[0028] "d[[ID=|36]] 85 " gives the size of the median in the particle size distribution of a substance (usually in micrometers for cementitious materials). This means that 85% of the particles have a size less than the d 85 value, and 15% of the particles have a size greater than the d 85 value. The measurement of d 85The measurement is performed by laser diffraction analysis, also known as laser diffraction spectroscopy, using a dry method with laser diffraction analyzers such as "SYMPATEC," which is commercialized by SYMPATEC Corporation.

[0029] "d 90 This gives the median size of the particle size distribution of the material (usually in micrometers for cement materials). This means that 90% of the particles are d 90 Having a size less than the value, 10% of the particles are d 90 This means it has a magnitude exceeding the value. 90 The measurement is performed by laser diffraction analysis, also known as laser diffraction spectroscopy, using a dry method with laser diffraction analyzers such as "SYMPATEC," which is commercialized by SYMPATEC Corporation. [Brief explanation of the drawing]

[0030] [Figure 1] [Figure 1] is a graph of the particle size distribution. [Figure 2] Figure 2 is a graph of velocity against time. [Figure 3] Figure 3 is a graph of velocity against time. [Figure 4] [Figure 4] is a graph of velocity against time. [Figure 5] Figure 5 is a graph of velocity against time. [Figure 6] [Figure 6] is a scheme showing a cone and its dimensions used for water demand testing. [Figure 7] Figure 7 is a graph showing the linear relationship between the relative flow area and the water-to-powder ratio. [Figure 8] Figure 8 is a graph showing the linear relationship between the relative flow area and the water-powder ratio for GGBS and standard GGBS according to the present invention. [Modes for carrying out the invention]

[0031] Blast furnace slag fine powder As described above, the present invention has a fineness consisting of a Braine value between 4500 and 6500, and a particle size between 7.5 μm and 12 μm. 50 and d between 19 μm and 29 μm 85 The present invention relates to blast furnace slag fine powder characterized by having the following properties.

[0032] In one embodiment, the blast furnace slag fine powder according to the present invention is between 0.5 μm and 1.7 μm. 10 It has.

[0033] In one preferred embodiment, the blast furnace slag fine powder according to the present invention is between 25 μm and 32 μm. 90 It also possesses.

[0034] In one embodiment, the blast furnace slag fine powder according to the present invention is between 8 μm and 10 μm. 50 It has.

[0035] In one embodiment, the blast furnace slag fine powder according to the present invention is between 21 μm and 25 μm. 85 It has.

[0036] In one embodiment, the blast furnace slag fine powder according to the present invention is between 27 μm and 30 μm. 90 It has.

[0037] Thanks to its specific particle size distribution, compared to blast furnace slag fine powder of the same fineness, i.e., between Blaine values ​​4500 and 6500, it exhibits increased solidification time, reduced water demand for the same rheological behavior, and increased hydration reactivity.

[0038] This specific particle size distribution can be obtained by controlling the grinding of blast furnace slag.

[0039] Hydraulic binder composition As described above, the present invention further relates to a hydraulic binder composition comprising the blast furnace powder described above.

[0040] The hydraulic binder composition according to the present invention may contain Portland cement, for example, in an amount between 0.5% by dry mass and 50% by dry mass.

[0041] In one embodiment, the Portland cement is ordinary Portland cement (OPC) according to standard EN 197-1.

[0042] The hydraulic binder composition according to the present invention may further contain an amount of aluminate cement between 5% and 35% by dry mass. The aluminate cement can be selected from the group including calcium aluminate cement (CAC), calcium sulfoaluminate cement (CSA), Belite-Ye'elimite-Ferritecement (BYF), and mixtures thereof, preferably from the group consisting of these.

[0043] Calcium aluminate cement may consist of at least one of the following crystalline forms: monocalcium aluminate (CaO.Al2O3), monocalcium diaryluminate (CaO.2 Al2O3), monocalcium hexaaluminate (CaO.6 Al2O3), dicalcium aluminosilicate (2 CaO.Al2O3.SiO2), tricalcium aluminate (3 CaO.Al2O3), dodecacalcium heptaaluminate (12 CaO.7 Al2O3), ye'elimite (4 CaO.3 Al2O3.SO3), calcium aluminoferrite (4 CaO.Al2O3.Fe2O3).

[0044] The hydraulic binder composition according to the present invention may further contain a sulfate source in an amount between 0.1% by mass and 30% by mass.

[0045] The sulfate source can be selected from the group comprising calcium sulfate (CaSO4), sodium sulfate (Na2SO4), potassium sulfate (K2SO4), lithium sulfate (Li2SO4), and mixtures thereof, preferably from the group consisting of these.

[0046] When the sulfate source is calcium sulfate, it may be anhydrite, hemihydrate, or dihydrate, the difference being the water molecules bonded to the calcium sulfate. Anhydrite contains no water (CaSO4), hemihydrate contains half a water molecule (CaSO4.1 / 2 H2O), and dihydrate, also known as gypsum, contains two water molecules (CaSO4.2 H2O). According to the present invention, calcium sulfate is anhydrous (anhydrite) calcium sulfate.

[0047] Dry industrial mortar composition or dry concrete composition As described above, the present invention further relates to a dry industrial mortar composition or dry concrete composition, particularly a mortar for application to tile adhesives, walls and facades, technical mortars, waterproofing membranes, and floors, particularly screeds and self-leveling underlayments (SLUs), comprising at least one aggregate and the hydraulic binder composition described above.

[0048] According to the present invention, a “dry” concrete composition or “dry” industrial mortar composition refers to a composition that is in powder form and ready to be mixed with water. In other words, the dry concrete composition or dry industrial mortar composition of the present invention may contain some moisture, but essentially contains solid components intended to be mixed with water before application.

[0049] Aggregates fall under the broad category of particulate materials used in construction and include sand, gravel, crushed stone, slag (not granular), recycled concrete, and geosynthetic aggregates. They function as reinforcing materials that add strength to the overall composite material. Aggregates may also include recycled rubber powder.

[0050] Advantageously, the dry concrete composition or dry industrial mortar composition may also contain one or more components in addition to aggregate, particularly functional admixtures, additives, and fibers, which may be any other components described later.

[0051] any other ingredients The binder composition is preferably advantageously enhanced with one or more other components, in particular functional additives, which are components selected from the following list.

[0052] Water-retaining agent The water-retaining agent has the property of retaining water mixed before solidification. Because the water is trapped within the wet compounding paste, its bonding is improved. The support reduces, to a certain extent, the amount of water absorbed.

[0053] The water-retaining agent is preferably selected from the group comprising modified cellulose, modified guar, modified cellulose ether and / or guar ether and mixtures thereof, and more preferably from the group comprising methylcellulose, methylhydroxypropylcellulose, methylhydroxyethylcellulose and mixtures thereof.

[0054] Rheological agents Possible rheological agents (also called "thickeners") are preferably selected from the group comprising, more preferably from, the group comprising starch ethers, cellulose ethers and / or rubbers (e.g., Welan guar xanthane, succinoglycans), modified polysaccharides (preferably among modified starch ethers), polyvinyl alcohol, polyacrylamide, sepiolite and mixtures thereof.

[0055] Antifoaming agent / bubble inhibitor Possible defoaming agents are preferably selected from the group comprising polyether polyols and mixtures thereof, more preferably from the group comprising them.

[0056] biocides Possible biocides are preferably selected from the group comprising mineral oxides such as zinc oxide and mixtures thereof, more preferably from the group comprising them.

[0057] pigment Possible pigments are preferably selected from the group comprising TiO2, iron oxide, and mixtures thereof, more preferably from the group comprising them.

[0058] Flame retardant Flame retardants (or fire retardants) make it possible to increase the fire resistance of a composition and / or reduce the rate of flame spread.

[0059] Air-entraining agent The air-entraining agent (surfactant) is advantageously selected from the group comprising natural resins, sulfate compounds or sulfonate compounds, synthetic detergents, organic fatty acids and mixtures thereof, more preferably from the group comprising lignosulfonates, fatty acid-based soaps and mixtures thereof, more preferably from the group comprising sulfonate olefins, sodium lauryl sulfate and mixtures thereof, more preferably from the group comprising these.

[0060] Delaying agent The retarder is advantageously selected from the group comprising tartaric acid and its salts, sodium salts or potassium salts, citric acid and its salts, sodium (trisodium citrate) and mixtures thereof, more preferably from the group comprising these.

[0061] Accelerator The accelerator is advantageously selected from the group comprising alkali metal salts, more preferably from the group comprising sodium carbonate and potassium carbonate, sodium chloride, or calcium formate or lithium salts.

[0062] Furthermore, the following other ingredients may be used: • Plasticizer ·fiber ·Dispersion powder ·Polymer resin • Complexing agent • Polyol-based drying shrinkage reducer.

[0063] The total content of any other components in the dry concrete composition or dry industrial mortar composition is preferably between 0.1% by mass and 10% by mass of the total mass of the dry concrete composition or dry industrial mortar composition.

[0064] Wet industrial mortar mixture or wet concrete mixture As described above, the present invention also relates to wet concrete formulations or wet industrial mortar formulations, in particular mortar for floor coverings, in particular self-leveling underlayments (SLUs), comprising at least one aggregate, the hydraulic binder composition described above, and water.

[0065] In certain embodiments, the wet mortar formulation is a so-called "ready-to-use" mortar. "Ready-to-use" mortars are used to assemble bricks or blocks at construction sites. They are obtained by directly mixing all elements of the composition (binder, aggregate, and other components) with water in a mixing plant. They contain a solidification retarder, allowing for transport and delayed use for up to several days while maintaining their rheological and curing properties.

[0066] Hardened industrial mortar products or hardened concrete products As described above, the present invention further relates to a hardened industrial mortar product or a hardened concrete product obtained from the wet industrial mortar formulation or wet concrete formulation described above.

[0067] Method for preparing wet industrial mortar mixtures or wet concrete mixtures As described above, the present invention also relates to a method for preparing the wet industrial mortar formulation or wet concrete formulation described above, comprising the step of mixing water, at least one aggregate and the hydraulic binder composition described above, wherein the hydraulic binder composition is prepared in situ before or during the mixing step in the form of different components of the hydraulic binder composition and / or a premix.

[0068] In other words, a wet concrete composition or a wet industrial mortar composition can be prepared by two different methods.

[0069] In the first method, a binder composition is prepared and then mixed with at least one aggregate. Subsequently, the dry concrete composition or dry industrial mortar composition is mixed with water.

[0070] In the second method, a wet concrete mixture or a wet industrial mortar mixture is prepared by mixing the binder composition and the aggregate components in water.

[0071] According to this disclosure, the term “mixture” should be understood as any form of mixture.

[0072] In a preferred embodiment, a portion of the hydraulic binder composition and at least a portion of the water are mixed together before mixing with the aggregate.

[0073] In a preferred embodiment, the method is carried out with a ratio of water to binder composition between 0.1 and 1.2, preferably between 0.15 and 0.7, and more preferably between 0.2 and 0.4.

[0074] Use of hydraulic binder composition The present invention also relates to the use of the above-mentioned binder composition to improve the fresh-state rheology, such as the fresh-state yield stress and fresh-state viscosity, of wet concrete formulations or wet industrial mortar formulations, particularly mortars for tile adhesives, coatings, assembling mortars, repair mortars, renderers, technical mortars, and floor coverings.

[0075] Advantageously, for use according to the present invention, the yield strength of the mortar in its fresh state is set between 0 Pa and 200 Pa, preferably between 5 Pa and 100 Pa, and more preferably between 30 Pa and 60 Pa.

[0076] Advantageously, for use according to the present invention, the viscosity of the paste in its fresh state is set between 0 Pa.s and 50 Pa.s, preferably between 15 Pa.s and 35 Pa.s, and more preferably between 20 Pa.s and 30 Pa.s.

[0077] The present invention also covers the use of the above-mentioned binder composition for the preparation of precast concrete or ready-mix concrete. [Examples]

[0078] Example 1: Preparation of blast furnace slag fine powder according to the present invention (GGBS New) GGBS New was prepared by controlling the grinding and fineness according to the grinding process. GGBS New can also be prepared by combining and blending different grinding processes.

[0079] The fineness of GGBS measured by the Blaine method according to standard EN 196-6 is not a suggestive parameter to use for GGBS New. In fact, a sample of GGBS New with a Blaine value of 5488 was compared to GGBS with a Blaine value of 5487 (GGBS 5400) that was produced without selecting and controlling the particle size distribution (PSD).

[0080] Figure 1 shows the cumulative and differential percentages of the particle size distribution for both GGBS New and GGBS 5400. From Figure 1, D 20 The particle size distribution up to d is quite similar, 40 A significant difference can be observed. The particle size distribution was measured using a laser particle size analyzer with a dry method.

[0081] Example 2: Measurement of Vicat solidification time Four paste samples were prepared as follows, with a water / binder ratio of 0.5. S1: Binder: 50% OPC, 50% GGBS New S2: Binder: 25% OPC, 75% GGBS New S3: Binder: 50% OPC, 50% GGBS 5400 S4: Binder: 25% OPC, 75% GGBS 5400

[0082] In accordance with standard EN 196-3, the Vicat solidification times were measured and reported in Table 1 below. The initial solidification time corresponds to the elapsed time from the moment water is added to the cement until the paste begins to lose its plasticity. The final solidification time is the elapsed time from the moment water is added until the paste completely loses its plasticity and begins to resist. [Table 1]

[0083] The solidification time of sample S1 was increased compared to the solidification time of sample S3.

[0084] The solidification time of sample S2 was increased compared to the solidification time of sample S4.

[0085] Figures 2 (S1 and S3) and 3 (S2 and S4) show the comparative changes in solidification time during the first 12 hours using the ultrasonic method.

[0086] The ultrasonic testing method consists of automatically extracting specific parameters of ultrasonic waves continuously recorded during the solidification and hardening of mortar materials. The resulting curves illustrate the behavior of the material and are closely related to the hydration process of the mortar. These curves are related to elastic properties and provide a comprehensive picture of the hardening process in a way that was previously inaccessible. Ultrasonic measurements enable monitoring of changes in the elastic properties of cementitious materials and thus provide insights into the development of microstructure and strength. Ultrasonic measurements were performed on standard mortars according to EN 196-1, made by replacing ordinary Portland cement with up to 50% and 75% GGBS.

[0087] Figures 4 (S1 and S3) and 5 (S2 and S4) show the comparative changes in the ultrasonic curing process, following the continued hydration and resulting changes in mechanical strength over the first 28 days.

[0088] In the case of GGBS with the same fineness, it can be concluded that the particle size distribution of GGBS according to the present invention makes it possible to increase the solidification time without reducing the mechanical strength over 28 days.

[0089] Example 3: Water demand experiment This test involves filling a paste into two layers and placing a frustoconical mold (Figure 6) on a glass plate. The mold is then lifted, and the spread is measured using its diameter, obtaining an average value between 140 mm and 280 mm. This procedure is then repeated for different proportions of other substances and water until a point sufficient to show the linear relationship in Figure 7 is reached.

[0090] Subsequently, the relative flow area (R) is calculated using Equation 1 by measuring the average diameter (D) of the spread.

number

[0091] According to Figure 7, a linear relationship can be obtained between the relative flow area and the ratio of the volume of water to the volume of powder.

[0092] The ratio of water to powder is calculated using Equation 2 and has a clear dependency on the relative flow area (R).

number

[0093] β p represents the water ratio, taking into account the water in the pores of the material particles and the water in the spaces between the particles. Therefore, it represents the minimum amount of water required for the powder to become paste-like. On the other hand, EP is defined as the deformation modulus and represents the sensitivity of the paste's fluidity to changes in water content.

[0094] Figure 8 shows that GGBS New forms a paste and requires less water than GGBS 5400 to obtain the same spread.

[0095] As a result, the specific particle distribution of GGBS according to the present invention has the same rheology, namely β P To achieve the same spread flow as in the tests conducted, it is possible to use less water than a standard GGBS with the same fineness.

Claims

1. A blast furnace slag fine powder having a fineness between a Blaine value of 4500 and a Blaine value of 6500, characterized in that it has d50 between 7.5 μm and 12 μm and d85 between 19 μm and 29 μm.

2. The blast furnace slag fine powder according to claim 1, further comprising d90 which is between 25 μm and 32 μm.

3. The blast furnace slag fine powder according to claim 1, further comprising d10 which is between 0.5 μm and 1.7 μm.

4. The blast furnace slag fine powder according to any one of claims 1 to 3, wherein the d50 is between 8 μm and 10 μm.

5. The blast furnace slag fine powder according to any one of claims 1 to 4, wherein the d85 is between 21 μm and 25 μm.

6. The blast furnace slag fine powder according to any one of claims 2 to 5, wherein the d90 is between 27 μm and 30 μm.

7. A hydraulic binder composition comprising blast furnace slag fine powder according to any one of claims 1 to 6.

8. A hydraulic binder composition according to claim 7, comprising Portland cement.

9. A hydraulic binder composition according to claim 7 or 8, comprising aluminate cement.

10. A hydraulic binder composition according to any one of claims 7 to 9, comprising a sulfate source.

11. A dry industrial mortar composition or dry concrete composition comprising at least one aggregate and the hydraulic binder composition according to any one of claims 7 to 10.

12. A wet industrial mortar compound or wet concrete compound comprising at least one aggregate, the hydraulic binder composition according to any one of claims 7 to 10, and water.

13. A hardened industrial mortar product or a hardened concrete product obtained from the wet industrial mortar mixture described in claim 12.

14. A method for preparing a wet industrial mortar mixture or wet concrete mixture according to claim 12, comprising the step of mixing water, at least one aggregate, and a hydraulic binder composition according to any one of claims 7 to 10, wherein the hydraulic binder composition is prepared in situ before or during the mixing step.

15. The method according to claim 14, wherein the hydraulic binder composition comprising two or more components is prepared in situ during the mixing step, and the two or more components are introduced separately and / or in the form of a premix.

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