• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In a hydraulic binder containing 25 to 85 wt .-% cement clinker, 0 to 7 wt .-% CaSO 4 and mineral additives are 1 to 10 wt .-% of a dual Abbindesteuerungssystems containing an activator and a retarder, wherein the weight Ratio of activator to retarder, based on the dry substance, greater than 85:15, in particular greater than 90:10, in particular greater than 95: 5, in particular greater than 98: 2 is selected.
    公开号:AT511689A1
    申请号:T1005/2011
    申请日:2011-07-08
    公开日:2013-01-15
    发明作者:Winnie Matthes；Zarina Castelltort；Thomas Matschei；Moussa Baalbaki
    申请人:Holcim Technology Ltd；
    IPC主号:
    专利说明:

    * · • «t · Μ • Φ · Φ Φ Φ φ φ * * # · ··· φ | * · · Φ Φ Φ Φ · Φ Φ Φ Φ Ι 4 4 4 4 4 4 4 4 4 4
    The invention relates to a hydraulic binder containing 25 to 85 wt .-% cement clinker, 0 to 7 wt .-% CaSO ^ and mineral additives. The invention further relates to an activation system and the use of the hydraulic binder or the activation system in a ready-mix concrete mixture.
    Concrete is a very widely used construction material with high strength and good durability. In addition to aggregates and 10 water, it contains Portland cement as a hydraulic binder, which develops strength-forming phases through solidification and hardening in contact with water. This makes concrete based on Portland cement clinker one of the most important binders worldwide. 15
    Cement based on Portland cement clinker contains calcium sulphate (CaSCM) to control setting and hardening.Calcium sulphate reacts with the aluminate clinker phases first to ettringite.After consumption of calcium sulphate and in the absence of carbonate, nitrate,
    Chloride, etc., the formed ettringite gradually converts to hydrate phases with lower sulfate content. Gypsum, hemihydrate, anhydrite or mixtures of two or more of these materials come into question as sources of calcium sulfate.
    If the Portland cement to various additives such. Granulated blastfurnace, fly ash, natural pozzolans, calcined clays or crushed limestone, Portland-30 composite cements can be made with different properties. At the same time, by replacing the Portland cement with these additives, it is possible to reduce the specific emissions of C02 in the manufacture of the cement, because of the production of Portland cement clinker
    [f'AHREIGHT 4 ♦ • 4 * 4 * 4 * 4 4 4444 4 ♦ 4 * 4 4 * 4 4444
    4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 444 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 tonne of Portland cement clinker by calcination of the raw materials and oxidation of the fuel in the rotary kiln. The addition of additives to Portland cement has been standard practice for more than 100 years and is regulated in numerous cement and concrete standards. The substitution of Portland cement clinker with additives in cement or in concrete, however, is accompanied by a reduction in the strength, especially the early strength, so that measures must be taken to achieve sufficient strength despite the desired reduced content of Portland cement clinker.
    One of these measures is the chemical activation, for example by alkali compounds. Portland cements with mineral additives such as e.g. Blastfurnace slag or fly ash show increased strengths in alkaline excitation or activation. At the same time, the workability of the mortar or concrete is significantly reduced. A Portlandhüttenoder blast furnace cement with the designation OEM III according to EN 197, to which an alkali Akivator is mixed, can be found for example in WO 2007/039694 A2. The disadvantage of such a cement, however, the reduced final strength and the short processing time, since the concrete sets very early. For example, acid-base activation at a controlled pH, as described in US Pat. No. 6,827,776 Bl and US Pat. No. 6,740,155 Bl, leads to very rapid setting and curing of fly ash composite cements with an initial setting time of up to 38 minutes and a final setting time of up to 46 minutes
    In contrast to the activation of portland cement with lime and alkali compounds, WO 92/06048 describes another activation strategy for granulated blastfurnace composite cements with less than 30% by weight Portland cement based on a
    POSSIBLE «· ·· IM« · «···« «« * * * * * «« · · · »· 4 *« · · · · · · · · ···· t I | I «M * · * ·· ··» 3
    Combination of magnesium oxide and phosphates. The resulting concrete is identified as fireproof. The formulations have a very low early strength, unless a small amount of an alkali compound is added along with lime, amorphous silicon and a plasticizer. U.S. 5,490,889 shows how the pot life and strength development of blended hydraulic compositions can be controlled by the delayed addition of the activator along with a careful adjustment of the addition of 5 to 9 different cement components. The hydraulic composition contains 15 to 22% by weight of water, 50 to 83% by weight of calcareous fly ash 15 (Class C according to ASTM C618) and 5 to 23% by weight.
    Cement materials comprising Portland cement, ground granulated blast furnace slag, hereinafter referred to as blastfurnace slag, and optionally ground silicon, all of which is activated by a combination of citric acid and a boric acid and / or borax alkali metal activator. According to this prior art, the processing time between a few minutes to more than one hundred hours is essentially controllable by the delayed addition of the activator citric acid and alkali metal activator. When working at 25 water / cement ratios below 0.25, good strength of the mortar studied was reported. However, due to the complexity of the formulation, it must be doubted that these values for a concrete under practical conditions of use vary in temperature, 30 different aggregate qualities and so on. can be achieved.
    The present invention aims to provide a repeatable significant improvement in strength, especially in
    SUBSEQUENT
    ··· «ff ψ · ψ ψ ψ ψ ψ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, un,,,,,. In order to achieve this object, the invention, starting from a hydraulic binder of the type initially mentioned, essentially consists in containing 1 to 10 parts by weight of a dual bind control system comprising an activator and a set retarder, the activator having a weight ratio of Retarder, based on the dry matter, greater than 85:15, in particular greater than 90:10, in particular greater than 95: 5, in particular greater than 98: 2 is selected. The Applicant has surprisingly found that lower levels of cement clinker due to the use of the dual Abbindesteuerungssystems invention can be at least compensated for the strength in early and late stages of setting and curing. In this case, the conventional advantages of the activator are connected to those of the retarder 20 in compliance with the claimed conditions. The activator, in the examples predominantly NaaSO 4, significantly accelerates the hydration reactions of both clinker and secondary cement materials. Consequently, the early strength of the accelerated composite cements on day 1 and 2 of setting 25 increases significantly. In the prior art, however, this is at the expense of the late strength development after 28 days. In accordance with the present invention, the combined addition of an activator and a retarder prevents this often observed late fatigue loss without affecting the effect at early activation. In addition, the
    Processability of cement in mortar and concrete significantly improved.
    I Γ'RESET I IM «« • • • • • • • • • • • • • • • • • • • • • • • • IM IM IM IM IM IM IM IM IM IM IM IM IM IM IM IM IM IM IM IM IM IM IM IM «· ·» I ·· ·· »i 5
    Calorimetric measurements together with thermodynamic calculations show that the combined activation system, consisting of a retarder and an activator, improves the degree of hydration from day one of setting. Although the combined activation system according to the invention has a relatively low degree of hydration on day 1 of setting in comparison to known activated systems, the early strength development of these two systems is comparable and significantly higher than that of the inactive system. SEM (Scanning Electron Microscope) images (see Figure 2) show that the coaddition of an activator (here, e.g., Na 2 SO 4) and a retarder (here, e.g., Na-gluconate) produces a denser microstructure that improves the mechanical performance of the combined activation system. The higher volume fractions of the reaction products calcium silicate hydrate and ettringite in cements with a combined activation system calculated from one day of hydration time on the basis of the chemically bound water are consistent with these observations.
    Due to the presence of a retarder, the dual bind control system as a whole can be used in higher amounts relative to the total mixture of the cement. Whereas the use of activators has hitherto been carried out in amounts of up to about 1% by weight, based on the weight of the hydraulic binder, amounts of up to 10% by weight can be used on account of the combination with the retarder and the strength increased correspondingly become. Preferably, the dual Abbindesteuerung system in amounts of 1 to 7 wt .-%, in particular 2 to 3 wt .-%, based on the hydraulic binder used.
    POSSIBLE REPLACEMENT · ** «· · · 4 6
    Preferably, the activator comprises one or more alkaline earth metal or alkali compounds, in particular at least one compound selected from the group consisting of carbonates, chlorides, sulphates, nitrates, nitrites, thiocyanates, thiosulphates and salts of organic acids, such as e.g. Formatives and acetates of alkali metals, in particular Na, K or Li. Preferably, the activator in combination with the at least one of the aforementioned compounds further comprises at least one compound selected from the group consisting of polyalcohols, in particular triethanolamine or triisopropanolamine, glycerol or glycol derivatives. The activator is preferably used in amounts of from 1 to 6% by weight, in particular from 2 to 4% by weight, based on the hydraulic binder. Particularly preferred is the use of Na 2 SO 4 as activator. This activator enhances the formation of ettringite, which leads to lower porosity through increased water-binding capacity.
    The retarder preferably comprises at least one compound selected from the group consisting of Zn and lead salts, phosphates, phosphonates, in particular
    Phosphonobutane tricarboxylic acid, aminomethylene phosphonates, in particular aminotrismethylene phosphonate, borates and boric acids, silicofluorides, organic acids, in particular hydroxycarboxylic acids, in particular gluconic acid, citric acid, tartaric acid and their salts, sugars and derivatives thereof and compounds based on lignin or lignosulfonates. The sugars can be mono-, di- and oligosaccharides.
    Among the sugar derivatives are especially sugar alcohols such as sorbitol to understand. Particularly preferred is the use of an alkali metal and / or alkaline earth metal salt of gluconic acid, in particular Na gluconate as a retarder. The retarder is preferably used in an amount of 0.01-0.5% by weight.
    FOLLOW-UP • «ii i * * · · · *« · * ··· Μ »|
    4 # ··· * · I t · * · * * · «« «» «« »» * *
    7% by weight, in particular 0.03-0.06% by weight, based on the hydraulic binder.
    As already mentioned, hydraulic binders based on cement clinker, in which the
    Clinker factor is reduced, mineral additives used to offset the reduced proportion of Portland cement clinker. In the context of the present invention, these are preferably granulated slag, fly ash, natural pozzolans, calcined clays, ground limestone or combinations thereof. Particularly preferred is the combination of blastfurnace slag and limestone. The mineral additives are preferably present in amounts of from 15 to 75% by weight, based on the hydraulic binder. If flyash or natural pozzolans are used as additives, reactive clays, in particular metakaolin, in amounts of from 1 to 15% by weight, based on the hydraulic binder, may preferably additionally be present in order to further increase the strength development or by a further reduction allow the clinker content.
    The hydraulic binders according to the invention are cements of the groups CEM II / A, B, CEM III / Α, Β, CEM IV / A, B and CEM V / A, B according to EN 197-1 and 25 compositions which in EN 197-1 are not included, such as a cement with 65 wt .-% granulated blastfurnace slag and 10 wt .-% limestone or a CEM V composition with 10 wt .-% limestone. Basically, the content of mineral additives in the range of 15 to 75 wt .-%. This means that the clinker content can vary from 25 to 85% by weight. The proportion of mineral additives, in particular pozzolanic components such as silica-rich fly ash, natural pozzolans or calcined clays is in the range 0 to 70 wt .-%, limestone can as
    FOLLOW-UP t * I ··································································································································································································································· from 0 to 50 wt .-% and latent hydraulic materials such as granulated blastfurnace or lime-rich fly ash in the range 0 to 75 wt. 5
    The activation system of the invention is characterized by a dual Abbindesteuerungungssystem, with an activator and a retarder, wherein the ratio of activator to retarder greater than 85:15, in particular greater than 90:10, 10 in particular greater than 95: 5, in particular greater than 98 : 2 is selected. With regard to the advantageous embodiments, reference is made to the above statements with regard to the hydraulic binder. The activation system is either present as part of the hydraulic binder, or can be added 15 only with mixing of the concrete or mortar.
    The inventive hydraulic binder or the activation system according to the invention can be further processed to a ready-mixed concrete mixture, as defined in the claims 20 to 22.
    The present invention will be explained in more detail with reference to the following embodiments. 25 Example 1
    Various composite cements were used in mortars containing 450 g cement and 1350 g EN standard sand. The water / cement ratio changed. Table 1 contains the results for the compressive strength of these mortars compared to unactivated comparative cements, cements with an activator, cements with a retarder and cements containing the combined activation system according to the invention.
    FOLLOW-UP 9 "*" · «IM · ·······························································································. «9« »9 · 99« 91 99
    Table 1:
    POSSIBLE Mortar, 20 ° C Activator Activator Wt. - q. 5 Retarder Retarder Wt.% w / c Compressive strength, MPa ld 2d 28a A) 57.4% by weight of clinker, 38.3% by weight of silica fly ash, 4.3% by weight of gypsum reference - 0 - 0 0 , 40 14.0 25.1 50, 2 Accelerates sodium sulfate 3.0 0.40 16.1 22.6 54.5 In accordance with the invention activates Na sulfate 3.0 Na gluconate 0.05 0.40 18.4 32.4 63.7 B) 55.1% by weight clinker, 36.7% by weight silica Fly ash, 4.1% by weight of metakaolin, 4.1% by weight of gypsum Accelerated Na sulfate 3.0-0.0 18.9 29.0 57.9 In accordance with the invention, activated Na sulfate 3.0 Na gluconate 0, 02 5 0.40 20.8 34.8 57.0 0 57.4 wt. -% clinker, 38.3% by weight silica flyash, 4.3% by weight gypsum Comparison 0 - 0 0.45 9.7 19.6 45.6 Activated I Glauberite 4.8 Na Gluconate 0.05 0.45 12.4 25.1 49.1 Activated II Glauberite 4.8 Citric Acid 0.07 0.45 10.5 23.2 47.6 Activated III Glauberite 4.8 Bayhibit 0.07 0.45 11.8 23.4 45.8 D) 28.7% by weight clinker, 66.8% by weight blastfurnace slag, 4.5% by weight gypsum Comparison - 0 - 0 3.2 7.5 50.9 Accelerates Na sulphate 3.0 - 0 4.2 7.2 48.3 Delayed 0 Na gluconate C, 05 1.6 7.0 58.7 According to the invention, activated Na sulphate 3.0 Na gluconate 0.05 4.5 10.8 58.2 10 »* · Μ · * * *« * * * «« * V · ♦ « «· · * ·« · * * · Λ ψ · ·· # * · · ««
    REPRODUCED E) 2S.7% by weight clinker, 66.8% by weight of hastead, 4.5% by weight of gypsum. Comparison 0 0 0.45 3.8 10.5 57. 8 Activated I Glauberite 4.8 Na Gluconate 0.05 0.45 5.7 17. 6 58.3 Enabled II Glauberit 4. 8 citric acid 0.07 0.45 4.2 14. 8 58.8 Enabled III Glauberit 4. 8 Bayhibi t 0.07 0.45 5.1 15. 4 56.0 F) 70% by weight clinker, 25.5% by weight ground limestone (LS), 4.5% by weight gypsum comparison - 0 0 0.50 11.3 21 0 44.7 In accordance with the invention, activated Na sulfate 3.0 Na gluconate 0, 05 0.50 17. 4 31. 7 46.1 G) 29% by weight clinker, 38 to 57% by weight granulated slag (gbfs), 10 to 30% by weight LS, 4.3% by weight gypsum Comparison: 6CI gbfs, 10% LS 0 0 0.45 na 14. 0 .0 Activated: 60% gbfs, 10% LS Na sulphate 3.0 Na gluconate 0, 05 0.45 na 20.7 63.5 Comparison. 4 0% gbfs, 3C% LS 0 0 0.45 na 12.1 48.8 Activated: 401 gbfs, 30% LS Na sulphate 3.0 Na gluconate 0, 05 0.45 na 18. 6 53.3 H] 28.7 wt.% Clinker, 66.8 wt.% Blastfurnace slag, 4.5 wt. I gypsum Comparison - 0 - 0 0.45 4.4 9.1 64.7 Accelerates Ca-Nitrate 3.0 - 0 0.45 4.5 12.7 63.3 In accordance with the invention activated Ca-nitrate 3.0 Na gluconate 0, 05 0.45 4.2 12.7 71.3 accelerates Ca nitrite 3.0 - 0 0.45 5.1 12.3 73.1 According to the invention Ca nitrite 3.0 Na gluconate 0.05 0.45 5.3 13.5 80.7 11 11 <ι · · · · · tt * * »*« * • / '· «* * * * t« «II I * *» M Mil · ♦ * • • • • »1 • I Ml 1» • · * · activated | I) 57.4% by weight of clinker, 38.3% by weight of natural pozzolan (volcanic tuff), 4.3% by weight of gypsum Comparison - 0 - 0 0.45 10.9 19.8 44.2 Accelerated Na sulphate 3.0 - 0 0.45 15.9 23.4 39.4 Invent - suitably activated Na sulphate 3.0 Na gluconate 0, 05 0.45 17.6 26.8 42.9 K) 55.1% by weight clinker, 36.7% by weight natural pozzolan (volcanic tuff), 4.1% by weight metakaolin, 4.1% by weight Gypsum comparison - 0 - 0 0.45 11.2 20.1 48.1 Accelerated Na sulphate 3.0 - 0 0.45 17.8 26.2 44.5 Activated according to the invention Na sulphate 3.0 Na gluconate 0, 05 0.45 19.9 26.9 43.9 L) 95.7% clinker, 4.3% gypsum Comparison - 0 0 0.50 21.8 35.2 60.5 Accelerates Na sulphate 3.0 - 0 0.50 30.0 41.0 61.5 In accordance with the invention activated Na sulphate 3.0 Na gluconate 0.05 0.50 33.3 45.6 65.6
    The results of Systems A} to C) show the effectiveness of the combined activation system of the present invention containing Na sulfate and Glauberite (Na 2 Ca (SO) 2) as Examples 5 for activators combined with various retarders to improve the strength of composite cements containing pozzolanic materials such as For example, silica fly ash in increased amounts and optionally metakaolin. The positive effect of the combination of activator and retarder over the sole addition of an activator is clearly shown.
    POSSIBLE * ······························································································································································································································· 4 4 »12
    Systems D) to E) show the significant increase in strength of composite cement mortars containing larger quantities of blastfurnace slag and exemplary combinations of activators and retarders according to the present invention. Again, the combination of activator and retarder results in significantly higher strength development at all stages compared to adding the activator or retarder alone.
    The effectiveness of the activation system clearly depends on the quality of the cement components. The response to activation depends on their reactivity and chemical composition. These examples illustrate the role of the activator, those of the retarder and those of the combined addition according to the present invention. While the addition of activator primarily increases the early strength and rather more or less lowers the late strength depending on the properties of the blastfurnace slag and the clinker, the addition of the retarder alone leads to the opposite, namely a reduction in the early strength, but an increase in the Late strength, only the invention
    Combination of both components brings good results in all Sradien.
    System F) demonstrates the effectiveness of the combined activation system of the present invention when applied to limestone composite cements. Surprisingly, even in the presence of increased amounts of the predominantly inert limestone, activation of the composite cement is achieved by the addition of the inventive activation system, resulting in a substantial increase in strength at all stages.
    System G) shows the effect of the combined
    Activation system, if this in ternary composite cements
    FOLLOWED · «·« ·· * «« »« · · · «« «« ··· * * * ··· «· · · · · · · · · · · · · · · · · · · · · · * · · # · 13 is used. In conventional composite cements, replacement of the reactive blastfurnace slag with the predominantly inert limestone would result in a reduction in strength at all stages proportional to the amount of superseded amount of blastfurnace slag. This is confirmed by the data of the various unactivated comparative cements. When the combined activation system according to the present invention is used, the reduction in early strength caused by the replacement of the reactive slag sand by the substantially unreactive limestone is more than offset. The late strength is also significantly increased.
    System H) illustrates the effectiveness of adding retarder to a granulated blastfurnace composite system activated by Ca nitrate and Ca nitrite. In both systems, the late strength was significantly improved by the addition of the retarder without affecting the early strength. 20
    Systems I) and K) contain examples of pozzolanic composite cements with an increased amount of volcanic tuff. System K) additionally contains small amounts of metakaolin. Activation with Na sulfate results in a significant increase in early strength at the expense of strength after 28 days. The addition of the retarder further increases the early strength and in part reduces the loss of strength in the later stage. The system L) illustrates the efficacy of the conventional portland cement combined activation system of the present invention without secondary cementitious materials. The combined addition of activator and retarder increases the
    SUBSEQUENT
    ·····································································································.
    II «Φ Φ I II
    Strength at all stages compared to the system containing only one activator.
    In summary of the examples given in Table 1, the novel combined activation system as claimed in this application is effective in significantly increasing the mortar strength of fly ash, blast furnace sand, pozzolan-based composite cements, and combinations thereof. The combination of activator and retarder outperforms the performance of the inactivated comparative systems and those of cements containing either the activator or the retarder alone. Thus, in an activated granular cement or conventional Portland cement according to the invention, a significantly higher strength at 15 constant clinker content can be achieved or
    Clinker content can be significantly reduced while maintaining a comparable level of strength. 20 Example 2:
    In example 2 a cement according to system D) was tested in concrete of the following composition: 380 kg / m3 cement D 25 112 kg / m3 0-0.2 mm sand 102 kg / m3 0.2-0.5 mm sand 118 kg / m3 0,5-1,0 mm sand 203 kg / m3 1,0-2,0 sand 337 kg / m3 2,0-4,0 sand 30 501 kg / m3 4-8 mm sand 505 kg / m3 8 -16 mm sand 152 kg / m3 water 4.56 kg / m3 concrete admixtures
    ADDENDED 15 • * * * ·· * «* · ·» • · »fl
    Table 2 shows the results for the compressive strength of concrete containing this cement together with the activation system according to the invention compared to an unactivated comparative cement, prepared and stored at 5 22 ° C and at 27 ° C.
    Table 2:
    Cement DT emp., Na-Na-gluconate, compressive strength, ° C sulfate, wt.% MPa Weight ld 2d 28d Comparison 20 0 0 8 16 55 Activated 20 3 0, 05 9 23 62 Comparison 27 0 0 14 29 66 Activated 27 3 0.05 24 34 57
    These data show that in a hydraulic composition according to the present invention, significant improvements in strength are achieved, especially in early phases, even at elevated temperatures.
    SUBSEQUENT
    权利要求:
    Claims (23)
    [1]
    1. Hydraulic binder comprising 25 to 85 wt .-% cement clinker, 0 to 7 wt .-%, in particular 1 to 7 wt .-% 5 CaSCh and mineral additives, characterized that 1 to 10 wt .-% of a dual Abbindesteuerungssystems are included, comprising an activator and a retarder, wherein the weight ratio of activator to retarder, based on the dry matter, greater than 85:15, 10 in particular greater than 90:10 , in particular greater than 95: 5, in particular greater than 98: 2 is selected.
    [2]
    2. A hydraulic binder according to claim 1, characterized in that the dual Abbindesteuerungssystem in 15 amounts of 1 to 7 wt .-%, in particular 2 to 3 wt .-%, based on the hydraulic binder, is used.
    [3]
    3. A hydraulic binder according to claim 1 or 2, characterized in that the activator one or more alkali or alkaline earth metal compounds, in particular at least one compound selected from the group consisting of carbonates, chlorides, sulphates, nitrates, nitrites, thiocyanates, thiosulfates and salts of organic acids, such as Formates and acetates, of alkali metals, in particular Na, K 25 or Li.
    [4]
    A hydraulic binder according to claim 3, characterized in that the activator further comprises at least one compound selected from the group consisting of polyhydric alcohols, e.g. Triethanolamine or triisopropanolamine, glycerol or glycol derivatives.
    [5]
    5. Hydraulic binder according to one of claims 1 to 4, characterized in that the activator in amounts of 1 35 to 6 wt -%, in particular 2 to 4 wt .-%, based on the hydraulic binder, is used. ___ FOLLOW-UP 17 III »ft« ft * »ft *« «*« · ft
    [6]
    6. Hydraulic binder according to one of claims 1 to 5, characterized in that is used as activator Na2SÜ4. 5
    [7]
    7. Hydraulic binder according to one of claims 1 to 6, characterized in that the retarder comprises at least one compound selected from the group consisting of Zn and lead salts, phosphates, phosphonates, in particular 10 phosphonobutanetricarboxylic acid, aminomethylene, especially Aminotrismethylenphosphonat, borates and boric acids , Silicofluoriden, organic acids, in particular hydroxycarboxylic acids, in particular gluconic acid, citric acid, tartaric acid and its salts, sugars and derivatives thereof, and compounds based on lignin or lignosulfonates.
    [8]
    8. Hydraulic binder according to one of claims 1 to 7, characterized in that as retarder an alkali metal and / or alkaline earth metal salt of gluconic acid, in particular 20 gluconate, is used.
    [9]
    9. Hydraulic binder according to one of claims 1 to 8, characterized in that the retarder in an amount of 0.01 -0.5 wt .-%, in particular 0.03 to 0.06%, based on the hydraulic binder , is used.
    [10]
    10. Hydraulic binder according to one of claims 1 to 9, characterized in that as mineral additives blastfurnace, fly ash, natural pozzolans, calcined clays, 30 ground limestone, or combinations thereof are included.
    [11]
    11. Hydraulic binder according to one of claims 1 to 10, characterized in that the mineral additives in a total amount of 15 to 75 wt .-%, 35 based on the hydraulic binder, are included. FOLLOW-UP 18 18


    [12]
    12. A hydraulic binder according to any one of claims 1 to 11, characterized in that in addition reactive clays, in particular metakaolin in amounts of 1 to 15 wt .-%, based on the hydraulic binder, are included.
    [13]
    13. activation system comprising a dual Abbindesteuerungssystem with an activator and a retarder, wherein the ratio of activator to retarder, based on the dry matter greater than 85:15, in particular greater than 90:10, in particular greater than 95: 5, in particular greater than 98: 2 is selected.
    [14]
    14. Activation system according to claim 13, characterized in that the activator one or more alkali metal or alkaline earth metal compounds, in particular at least one compound selected from the group consisting of carbonates, chlorides, sulphates, nitrates, nitrites, thiocyanates, thiosulphates and salts of organic acids, such as. Fcrmiaten and acetates, of alkali metals, in particular Na, K or Li.
    [15]
    Activation system according to claim 14, characterized in that the activator further comprises at least one compound selected from the group consisting of polyalcohols, e.g. Triethanolamine or triisopropanolamine, glycerol or glycol derivatives.
    [16]
    16. activation system according to claim 13, 14 or 15, characterized in that is used as the activator Na2SCh.
    [17]
    17. Activation system according to one of claims 13 to 16, characterized in that the retarder comprises at least one compound selected from the group consisting of Zn and lead salts, phosphates, phosphonates such as: phosphonobutanetricarboxylic acid, aminomethylene phosphonates (eg, FOLLOWED · · #t · · · * * · *** ··! «• *« * * * * • # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # "Aminotrismethylene phosphonate), borates and boric acids, silicofluorides, organic acids, in particular hydroxycarboxylic acids such as Gluconic acid, citric acid, tartaric acid and its salts, sugars and their derivatives, and 5 compounds based on lignin or lignosulfonates.
    [18]
    18. Activation system according to one of claims 13 to 17, characterized in that the retarder comprises an alkali metal and / or alkaline earth metal salt of gluconic acid. 10
    [19]
    Activation system according to one of claims 13 to 18, characterized in that the retarder comprises Na gluconate.
    [20]
    20. Ready-mixed concrete mixture containing an activation system according to any one of claims 13 to 20.
    [21]
    21. Ready-mixed concrete mixture according to claim 20, containing the activation system in an amount of 1 to 10 wt .-%, based on the hydraulic binder 20.
    [22]
    22. Ready-mixed concrete mixture containing a hydraulic binder according to one of claims 1 to 12.
    [23]
    23. Molding produced using a hydraulic binder or an activation system according to any one of claims 1 to 19. SUBSEQUENT

    类似技术:
    公开号 | 公开日 | 专利标题
    AT392637B|1991-05-10|METHOD FOR PRODUCING A BINDING AGENT FOR USE IN THICK OR RAW SLUDGE, MORTAR OR CONCRETE
    DE60029770T2|2007-08-09|QUICK-HARDENING ULTRA-EARLY HIGH-RESISTANCE PORTLAND-ARTIFICIAL CEMENT COMPOSITIONS, NEW CLINKS AND MANUFACTURING PROCESSES
    CH686513A5|1996-04-15|Method of accelerating the setting and setting of a binder and setting and setting accelerators.
    DE2257531B2|1975-12-18|Process for the manufacture of a fast setting portland cement
    DE3821657C2|1990-09-27|
    DE202005021722U1|2009-08-06|Hydraulic binder
    EP0211362B2|1996-08-07|Mixture for producing quickly hardening mortars for stuccoes and repairs
    EP2729430B1|2020-08-12|Hydraulic binder
    EP0213390B1|1990-11-07|Mortar mixture for fast hardening cementitious flooring materials
    EP0211365B1|1990-11-07|Fast setting cement
    EP2066595B1|2014-11-19|Binder comprising portland cement and lime hydrate
    EP3310737B1|2019-10-30|Activator with low ph value for clinker replacement materials
    EP2159202A1|2010-03-03|Adhesive, compound comprising a slag and an additive and a method for creating a building material
    DE102013007937A1|2014-11-13|Mineral, hydraulic binder and mineral, hydraulic dry mortar, fresh concrete and hardened concrete containing the binder
    AT405174B|1999-06-25|QUICK-HARDENING, CEMENTARY, HYDRAULIC BINDING AGENT, LOW SHRINKAGE, ESPECIALLY FOR PLASTER AND SCREED
    EP0211194B1|1990-09-12|Mortar mixture for quick-setting casts of insulation systems
    DE10124149B4|2006-08-10|Self-leveling anhydrite screed mixture
    DE2953652C1|1986-05-28|Hydraulic inorganic mass
    DE102019104414A1|2020-08-27|Binder composition with a long processing time
    EP2632871A1|2013-09-04|Hydraulic activator for slag sand
    DE102012009722B3|2013-08-08|Binder mixture and dry mortar composition
    DE19832127A1|2000-05-04|Shigait-forming binder mixture
    同族专利:
    公开号 | 公开日
    ES2827283T3|2021-05-20|
    CN103649005B|2017-06-13|
    AU2012282216A1|2014-02-27|
    CA2841109A1|2013-01-17|
    AU2012282216B2|2016-05-19|
    WO2013008082A1|2013-01-17|
    PL2729430T3|2021-02-08|
    BR112014000293A2|2017-02-07|
    CN103649005A|2014-03-19|
    MX362242B|2019-01-09|
    EP2729430A1|2014-05-14|
    EP2729430B8|2020-10-07|
    EP2729430B1|2020-08-12|
    US20140144350A1|2014-05-29|
    AT511689B1|2016-05-15|
    MX2014000339A|2015-05-15|
    AR087100A1|2014-02-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5350450A|1989-06-05|1994-09-27|Sandoz Ltd.|Admixture for concrete mixes|
    DE4242107C1|1992-12-14|1994-06-01|Heidelberger Zement Ag|Fast curing binder mixture and its use|
    EP2075240A1|2007-12-20|2009-07-01|Sika Technology AG|Catalyst for reactivation of delayed cementitious systems|
    CN1019099B|1985-08-06|1992-11-18|电气化学工业株式会社|High-strength water hard composite|
    US5017234A|1989-10-06|1991-05-21|W. R. Grace & Co.-Conn.|Processing additives for blended cements|
    SE470061B|1990-10-05|1993-11-01|Kurz Fredrik W A|Method of making blast furnace slag into a direct acting hydraulic binder and production of building materials thereof|
    CN1029469C|1992-09-29|1995-08-09|武汉工业大学|Method for mfg. cement with highearly strength and high slag content|
    US5490889A|1993-05-27|1996-02-13|Kirkpatrick; William D.|Blended hydraulic cement for both general and special applications|
    US5553670A|1993-12-30|1996-09-10|Shell Oil Company|Optimizing blast furnace slag cements|
    JPH08143348A|1994-11-16|1996-06-04|Sumitomo Metal Ind Ltd|Cement composition|
    US5932344A|1995-02-07|1999-08-03|Daicel-Huels Ltd.|Cement retarder and cement retardative sheet|
    US6740155B1|2001-08-24|2004-05-25|Isg Resources, Inc.|Method of delaying the set time of cement and the compositions produced therefrom|
    US6827776B1|2001-08-24|2004-12-07|Isg Resources, Inc.|Method for accelerating setting of cement and the compositions produced therefrom|
    US6858074B2|2001-11-05|2005-02-22|Construction Research & Technology Gmbh|High early-strength cementitious composition|
    US6832652B1|2003-08-22|2004-12-21|Bj Services Company|Ultra low density cementitious slurries for use in cementing of oil and gas wells|
    US20050155763A1|2004-01-16|2005-07-21|Reddy B. R.|Settable fluids comprising particle-size distribution-adjusting agents and methods of use|
    US7288148B2|2004-02-13|2007-10-30|Cemex, Inc.|Rapid hardening hydraulic cement from subbituminous fly ash and products thereof|
    US7478675B2|2005-09-09|2009-01-20|Halliburton Energy Services, Inc.|Extended settable compositions comprising cement kiln dust and associated methods|
    FR2891270B1|2005-09-28|2007-11-09|Lafarge Sa|HYDRAULIC BINDER COMPRISING A TERNAIRE ACCELERATION SYSTEM, MORTARS AND CONCRETES COMPRISING SUCH A BINDER|
    US8029619B2|2006-05-25|2011-10-04|Nittetsu Cement Co., Ltd.|Grouting material|
    US7794537B2|2006-08-07|2010-09-14|Schlumberger Technology Corporation|Geopolymer composition and application in oilfield industry|
    CN101508546B|2009-04-09|2012-09-05|中国铁道科学研究院铁道建筑研究所|Novel winter cement based grouting agent for railway concrete beam support|CN104058623A|2014-07-07|2014-09-24|江苏名和集团有限公司|Thickening time control agent and portland cement with same|
    CN104293329B|2014-09-24|2017-05-03|中国石油大学|High-temperature well-cementing material system and composition thereof|
    CN108191283B|2018-03-22|2020-04-21|中国建筑材料科学研究总院有限公司|Sulphoaluminate cement composite reinforcing agent|
    CN111704383A|2020-06-05|2020-09-25|长江勘测规划设计研究有限责任公司|Hydration heat inhibitor suitable for concrete construction in high-temperature environment and preparation method thereof|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA1005/2011A|AT511689B1|2011-07-08|2011-07-08|HYDRAULIC BINDER|ATA1005/2011A| AT511689B1|2011-07-08|2011-07-08|HYDRAULIC BINDER|
    ARP120102476| AR087100A1|2011-07-08|2012-07-06|HYDRAULIC BINDING, ACTIVATION SYSTEM, PREPARED CONCRETE MIXING, AND PREFABRICATED PIECE|
    MX2014000339A| MX362242B|2011-07-08|2012-07-09|Hydraulic binder.|
    BR112014000293A| BR112014000293A2|2011-07-08|2012-07-09|hydraulic binder|
    CN201280033907.7A| CN103649005B|2011-07-08|2012-07-09|hydraulic binder|
    US14/131,503| US20140144350A1|2011-07-08|2012-07-09|Hydraulic binder|
    EP12748525.8A| EP2729430B8|2011-07-08|2012-07-09|Hydraulic binder|
    PL12748525T| PL2729430T3|2011-07-08|2012-07-09|Hydraulic binder|
    AU2012282216A| AU2012282216B2|2011-07-08|2012-07-09|Hydraulic binder|
    PCT/IB2012/001357| WO2013008082A1|2011-07-08|2012-07-09|Hydraulic binder|
    ES12748525T| ES2827283T3|2011-07-08|2012-07-09|Hydraulic binder|
    CA 2841109| CA2841109A1|2011-07-08|2012-07-09|Hydraulic binder|
    [返回顶部]