CN1699244A - Multifunctional chlorine-free alkali-free compound concrete slag admixture and its preparation process - Google Patents
Multifunctional chlorine-free alkali-free compound concrete slag admixture and its preparation process Download PDFInfo
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- CN1699244A CN1699244A CNA2005100391769A CN200510039176A CN1699244A CN 1699244 A CN1699244 A CN 1699244A CN A2005100391769 A CNA2005100391769 A CN A2005100391769A CN 200510039176 A CN200510039176 A CN 200510039176A CN 1699244 A CN1699244 A CN 1699244A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
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- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
Disclosed is a multifunctional chlorine-free alkali-free compound concrete slag admixture which comprises (by weight ratio) inorganic industrial waste material 90-95%, organic raw material 5-10%, the inorganic industrial waste material is selected from lithium slag powder, calcium slag powder, phosphogypsum slag, fluorite tailings, composite of silicon ash and rare earth waste material, the organic raw material is selected from organosilane, carbon fiber, methylvinyl silicone rubber, polyepoxysulfonate, polycarboxylate, low polyglycerol, compound of diethylene triamine condensate and tartaric acid. The preparation method comprises the following steps, mixing inorganic industrial waste materials by proportion and grinding to 0.08mm, grinding organic raw material to grain diameter of below 1um, charging 5-10% of organic raw materials into 90-95% of inorganic raw materials.
Description
Technical field
The invention belongs to the concrete auxiliary material in the material of construction, a kind of multifunctional chlorine-free alkali-free compound concrete slag admixture and production method thereof are provided.
Background technology
Concrete material is the artificial material of contemporary consumption maximum, and nowadays China is in the fundamental construction climax, and concrete amount occupies the hat in the whole world.Concrete material is the good material of construction of weather resistance under science design and construction condition, if but do not accomplish this point, and under harsh Service Environment, concrete will demonstrate very short work-ing life.General about 50～100 years of working life of concrete works, but many engineerings are after using 10～20 years, have in addition after using several years, promptly need keep in repair.Therefore, must carry out New understanding, change the competent naturally notion of concrete, in the whole process of preparing, set up the project, design, construct, checking and accepting and using of engineering, weather resistance be gived top priority consider concrete endurance issues.Press the suggestion of ACI 201 councils, the weather resistance of cement concrete is defined as the resistivity to Differentiation, chemical erosion, abrasion or other destructive process, that is to say that durable concrete should keep its original shape, quality and suitability when being placed on environment for use.Up to now, shadow has to the principal element of concrete durability: (1) unfreezing; (2) aggressiveness chemical action; (3) wearing and tearing; (4) steel bar corrosion; (5) alkali; (6) formation of retardance ettringite.
As everyone knows, some slag of admixture can improve concrete weather resistance and other performance in concrete, and people update concrete slag admixture by a large amount of scientific experimentations in recent years, and develop the different concrete admixture of performance.The major defect of available coagulation soil slag admixture is: function singleness, comprehensive effectiveness is poor.In order to satisfy the needs of high durability concrete technical development, utilize the abundant industrial residue in source to develop a kind of multi-functional compound concrete slag admixture of super quality and competitive price for main raw material, it not only has can suppress alkali, resisting erosion of sulfate, prevention steel bar corrosion and anti-freeze thawing destruction, and the characteristics that have diminishing, enhancing and can regulate time of coagulation, be those skilled in the art's important subject.
Summary of the invention
The objective of the invention is to overcome the shortcoming of background technology, a kind of multifunctional chlorine-free alkali-free compound concrete slag admixture is provided, this Additive can suppress concrete alkali, resisting erosion of sulfate, prevention steel bar corrosion and anti-freeze thawing destroys, and has diminishing, enhancing and can regulate function such as time of coagulation; The present invention also will provide the production method of this Additive.
The technical scheme of finishing the foregoing invention purpose is: multifunctional chlorine-free alkali-free compound concrete slag admixture, and described multifunctional chlorine-free alkali-free slag admixture is a kind of composition, its components by weight is:
Inorganic industrial waste 90～95%;
Organic raw material 5～10%.
Above-described inorganic industrial waste is selected from: the mixture of lithium slag powders, inferior calcium ground-slag, phosphogypsum slag, fluorite mine tailing, silicon ash and rare earth waste material; Described various slag powders can be selected following composition and ratio for use:
Inorganic industrial waste (is 100% in total amount) is made up of the weight proportion of following raw material:
Lithium slag powders 30～50%
Inferior calcium ground-slag 15～25%
Phosphogypsum slag 5～20%
Fluorite mine tailing 5～15%
Silicon ash 5～15%
Rare earth waste material 5～10%;
Described organic raw material is selected from: organosilane, carbon fiber, methyl vinyl silicone rubber, poly-epoxy-sulfonate, polycarboxylate, low Polyglycerine, diethylenetriamine class condenses and tartaric mixture; Described various slag powders can be selected following composition and ratio for use:
Organic raw material (is 100% in total amount) is made up of following raw material weight proportioning:
Organosilane 20～40%
Carbon fiber 15～30%
Methyl vinyl silicone rubber 5～15%
Poly-epoxy-sulfonate 5～15%
Polycarboxylate 5～15%
Low Polyglycerine 5～10%
Diethylenetriamine class condenses 5～10%
Tartrate 5～10%.
The prioritization scheme of Additive composition of the present invention is: described inorganic industrial waste tails at the fine powder below 5% for the 0.08mm hole sizer; Described organic raw material is the fine powder of the following particle diameter of 1 μ m.
The production method of described multi-functional slag admixture is: at first inorganic industrial waste is mixed by proportioning and grinding to 0.08mm hole sizer tails at the fine powder below 5%, add the following particle diameter of organic raw material grinding to 1 μ m then in proportion and account for finished product slag admixture more than 95%.
During use, the ratio that multifunctional chlorine-free alkali-free compound concrete slag admixture of the present invention is admixed in concrete can be: account for 30～50% of binder total amount in the concrete.
The present invention compares with background technology following advantage: lithium slag breeze, inferior calcium ground-slag, fluorite mine tailing, silicon ash, organosilane, carbon fiber and the methyl vinyl silicone rubber etc. that the present invention adopts are for suppressing alkali component, the Li in the lithium slag breeze
+, the NO in the inferior calcium ground-slag
2 -With the F in the fluorite mine tailing
-Can change the expansion characteristics of traditional alkali gel to some extent, silicon ash, organosilane, carbon fiber and methyl vinyl silicone rubber can dilute, adsorb the alkali in the concrete hole solution, with the Ca (OH) in the hole solution
2Ca (OH) in pozzolanic reaction minimizing even the elimination system takes place
2, the low Ca/Si that pozzolanic reaction generates can adsorb and be detained alkali in the hole solution simultaneously than product, and concrete system is played densification.Therefore, slag admixture has alkali inhibition ability.The silicon ash that the present invention adopts etc. is the resisting erosion of sulfate component, slag admixture of the present invention is added in the concrete after levigate, the filling pore of one side slag micropowder particle own, stop up the connected pore channel, concrete density is improved, and the C-S-H gel of slag micropowder aquation generation simultaneously also makes concrete structure further closely knit; On the other hand, because slag has replaced the part cement clinker, to C in the concrete
3The total amount of A (tricalcium aluminate) has diluting effect, thereby has reduced the generation of swelling property products such as ettringite, has strengthened concrete resisting erosion of sulfate ability.Inferior calcium ground-slags etc. have the resisting corrosion of chlorine ion performance for stoping concrete reinforcement corrosion component; Silicon ash, tartrate etc. can improve concrete internal water heat-transmission for anti-freeze thawing destroys component, improve concrete impermeability; Polycarboxylates etc. are the diminishing component; Rare earth waste material, carbon fiber, low Polyglycerine and tartrate etc. are enhancement component, work to excite composition activity in adulterant, improve processing characteristics; Phosphogypsum slags etc. are for regulating component time of coagulation.
The present invention utilizes the abundant industrial residue in source that a kind of composite blend of super quality and competitive price is provided for the concrete industry for main raw material, the adulterant that in concrete, adds binder total amount 30～50% (weight ratio), not only can suppress alkali, resisting erosion of sulfate, prevention steel bar corrosion and anti-freeze thawing and destroy, and have diminishing, enhancing and can regulate function such as time of coagulation.Changing waste into valuables of the present invention rationally utilizes industrial waste, has good economic benefit and social benefit.
Embodiment
Below in conjunction with example the present invention is done further argumentation, but embodiment should not regard the qualification to right of the present invention as.
Embodiment 1
By weight, the component and the consumption of multi-functional compound concrete slag admixture are: inorganic industrial waste is 90, and organic raw material is 10.The concrete component and the consumption of inorganic industrial waste (is 100% in total amount) are: lithium slag powders 50, inferior calcium ground-slag 25, phosphogypsum slag 5, fluorite mine tailing 10, silicon ash 5 and rare earth waste material 5; The concrete component and the consumption of organic raw material (is 100% in total amount) are: organosilane 20, carbon fiber 25, methyl vinyl silicone rubber 10, low Polyglycerine 10, poly-epoxy-sulfonate 10, polycarboxylate 10, diethylenetriamine class condenses 10 and tartrate 5.
Embodiment 2
By weight, the component and the consumption of multi-functional compound concrete slag admixture are: inorganic industrial waste is 90, and organic raw material is 10.The concrete component and the consumption of inorganic industrial waste (is 100% in total amount) are: lithium slag powders 45, inferior calcium ground-slag 20, phosphogypsum slag 10, fluorite mine tailing 15, silicon ash 5 and rare earth waste material 5; The concrete component and the consumption of organic raw material (is 100% in total amount) are: organosilane 25, carbon fiber 15, methyl vinyl silicone rubber 15, poly-epoxy-sulfonate 10, polycarboxylate 10, low Polyglycerine 10, diethylenetriamine class condenses 10 and tartrate 5.
Embodiment 3
By weight, the component and the consumption of multi-functional compound concrete slag admixture are: inorganic industrial waste is 90, and organic raw material is 10.The concrete component and the consumption of inorganic industrial waste (is 100% in total amount) are: lithium slag powders 40, inferior calcium ground-slag 25, phosphogypsum slag 20, fluorite mine tailing 15, silicon ash 5 and rare earth waste material 5; The concrete component and the consumption of organic raw material (is 100% in total amount) are: organosilane 30, carbon fiber 20, methyl vinyl silicone rubber 15, poly-epoxy-sulfonate 15, polycarboxylate 5, low Polyglycerine 5, diethylenetriamine class condenses 5 and tartrate 5.
Embodiment 4
By weight, the component and the consumption of multi-functional compound concrete slag admixture are: inorganic industrial waste is 95, and organic raw material is 5.The concrete component and the consumption of inorganic industrial waste (is 100% in total amount) are: lithium slag powders 45, inferior calcium ground-slag 15, phosphogypsum slag 15, fluorite mine tailing 5, silicon ash 10 and rare earth waste material 10; The concrete component and the consumption of organic raw material (is 100% in total amount) are: organosilane 40, carbon fiber 30, methyl vinyl silicone rubber 5, poly-epoxy-sulfonate 5, polycarboxylate 5, low Polyglycerine 5, diethylenetriamine class condenses 5 and tartrate 5.
Embodiment 5
By weight, the component and the consumption of multi-functional compound concrete slag admixture are: inorganic industrial waste is 95, and organic raw material is 5.The concrete component and the consumption of inorganic industrial waste (is 100% in total amount) are: lithium slag powders 35, inferior calcium ground-slag 15, phosphogypsum slag 10, fluorite mine tailing 15, silicon ash 15 and rare earth waste material 10; The concrete component and the consumption of organic raw material (is 100% in total amount) are: organosilane 35, carbon fiber 20, methyl vinyl silicone rubber 5, poly-epoxy-sulfonate 5, polycarboxylate 15, low Polyglycerine 10, diethylenetriamine class condenses 5 and tartrate 5.
Embodiment 6
By weight, the component and the consumption of multi-functional compound concrete slag admixture are: inorganic industrial waste is 95, and organic raw material is 5.The concrete component and the consumption of inorganic industrial waste (is 100% in total amount) are: lithium slag powders 30, inferior calcium ground-slag 20, phosphogypsum slag 15, fluorite mine tailing 10, silicon ash 15 and rare earth waste material 10; The concrete component and the consumption of organic raw material (is 100% in total amount) are: organosilane 30, carbon fiber 30, methyl vinyl silicone rubber 5, poly-epoxy-sulfonate 5, polycarboxylate 5, low Polyglycerine 5, diethylenetriamine class condenses 10 and tartrate 10.
The foregoing description production technique is all identical with technology of the present invention.
To make comparisons with endurance quality and normal portland cement concrete (OPC) that embodiment 1～6 described multi-functional complex ore slag adulterant substitutes the concrete (design strength grade C45) that 40% cement prepared respectively, the result is as follows:
Table 1 blank and the endurance quality of mixing multi-functional complex ore slag blending concrete
| The concrete kind | Rate of expansion (% suppresses the alkali performance) | Coefficient against corrosion (sulphate-corrosion resistance energy) | 28d chloride-penetration resistance value (C stops the steel bar corrosion performance) | 100 inferior qualities loss (%, anti-freeze thawing destructive characteristics) |
| ??OPC | ?0.28 | ?0.836 | ??1450 | ?0.8 |
| ??1 | ?0.01 | ?1.113 | ??238 | ?0.2 |
| ??2 | ?0.04 | ?1.132 | ??307 | ?0.3 |
| ??3 | ?0.03 | ?1.104 | ??242 | ?0.2 |
| ??4 | ?0.08 | ?1.256 | ??458 | ?0.5 |
| ??5 | ?0.06 | ?1.323 | ??462 | ?0.5 |
| ??6 | ?0.09 | ?1.318 | ??312 | ?0.4 |
This explanation, with respect to normal concrete, the concrete inhibition alkali performance, sulphate-corrosion resistance energy, prevention steel bar corrosion performance and the anti-freeze thawing destructive characteristics that are mixed with multi-functional complex ore slag adulterant all significantly increase, and the improvement of these performances is improved durability of concrete comprehensively.
Will with embodiment 1～6 described multi-functional complex ore slag adulterant substitute respectively the concrete (design strength grade C45) that 40% cement prepared proportioning, intensity and time of coagulation performance and normal portland cement concrete (OPC) make comparisons, the result is as follows:
Table 2 blank and proportioning, intensity and the time of coagulation of mixing multi-functional complex ore slag blending concrete
| Kind | Every cube of concrete material consumption (kg) | Ultimate compression strength (MPa) | Folding strength (MPa) | Time of coagulation (h:min) | |||||||
| Cement | Adulterant | Sand | Stone | Water | ??3d | ??28d | ??3d | ??28d | Initial set | Final set | |
| ??OPC | ??470 | ??0 | ??698 | ??1096 | ??226 | ??34.1 | ??49.2 | ??5.26 | ??8.80 | ??7:38 | ??11:46 |
| ??1 | ??282 | ??188 | ??698 | ??1096 | ??169 | ??38.9 | ??56.9 | ??6.09 | ??9.50 | ??7:42 | ??11:50 |
| ??2 | ??282 | ??188 | ??698 | ??1096 | ??170 | ??37.2 | ??56.6 | ??6.05 | ??9.37 | ??7:56 | ??12:03 |
| ??3 | ??282 | ??188 | ??698 | ??1096 | ??179 | ??36.8 | ??56.2 | ??6.00 | ??9.22 | ??8:39 | ??13:16 |
| ??4 | ??282 | ??188 | ??698 | ??1096 | ??183 | ??40.2 | ??59.4 | ??6.42 | ??9.79 | ??8:24 | ??12:47 |
| ??5 | ??282 | ??188 | ??698 | ??1096 | ??174 | ??39.7 | ??58.1 | ??6.21 | ??9.57 | ??8:06 | ??12:15 |
| ??6 | ??282 | ??188 | ??698 | ??1096 | ??182 | ??40.6 | ??60.1 | ??6.36 | ??9.68 | ??8:18 | ??12:32 |
Multi-functional complex ore slag adulterant place of cement concrete batching is adopted in this explanation, has diminishing, enhancing simultaneously and can regulate functions such as time of coagulation.
Embodiment 7, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: lithium slag powders, inferior calcium ground-slag and phosphogypsum slag; The component of organic raw material includes only: organosilane, carbon fiber and methyl vinyl silicone rubber, ratio is not limit.
Embodiment 8, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: lithium slag powders, fluorite mine tailing and silicon ash; The component of organic raw material includes only: organosilane, poly-epoxy-sulfonate and polycarboxylate, ratio is not limit.
Embodiment 9, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: lithium slag powders, inferior calcium ground-slag and rare earth waste material; The component of organic raw material includes only: organosilane, carbon fiber and tartrate 5, ratio is not limit.
Embodiment 10, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: lithium slag powders and inferior calcium ground-slag; The component of organic raw material includes only: organosilane and carbon fiber, ratio is not limit.
Embodiment 11, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: lithium slag powders and phosphogypsum slag; The component of organic raw material includes only: organosilane and methyl vinyl silicone rubber, ratio is not limit.
Embodiment 12, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: the component of lithium slag powders and fluorite mine tailing, organic raw material includes only: organosilane and poly-epoxy-sulfonate, ratio is not limit.
Embodiment 13, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: inferior calcium ground-slag and fluorite mine tailing; The component of organic raw material includes only: carbon fiber and poly-epoxy-sulfonate, ratio is not limit.
Embodiment 14, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: phosphogypsum slag and rare earth waste material; The component of organic raw material includes only: carbon fiber and and poly-epoxy-sulfonate, ratio is not limit.
Embodiment 15, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: the lithium slag powders; The component of organic raw material includes only: organosilane.
Embodiment 16, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: inferior calcium ground-slag; The component of organic raw material includes only: carbon fiber.
Embodiment 17, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: the phosphogypsum slag; The component of organic raw material includes only: methyl vinyl silicone rubber.
Embodiment 18, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: the fluorite mine tailing; The component of organic raw material includes only: poly-epoxy-sulfonate.
Embodiment 19, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: the silicon ash; The component of organic raw material includes only: polycarboxylate.
Embodiment 20, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: the rare earth waste material; The component of organic raw material includes only: low Polyglycerine.
Embodiment 21, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: the lithium slag powders; The component of organic raw material includes only: diethylenetriamine class condenses.
Embodiment 22, and is basic identical with above embodiment, but the component of inorganic industrial waste includes only: inferior calcium ground-slag; The component of organic raw material includes only: tartrate.
Claims (4)
1, a kind of multifunctional chlorine-free alkali-free compound concrete slag admixture, described multifunctional chlorine-free alkali-free slag admixture is a kind of composition, its components by weight is:
Inorganic industrial waste 90～95%;
Organic raw material 5～10%.
Described inorganic industrial waste is selected from: the mixture of lithium slag powders, inferior calcium ground-slag, phosphogypsum slag, fluorite mine tailing, silicon ash and rare earth waste material;
Described organic raw material is selected from: organosilane, carbon fiber, methyl vinyl silicone rubber, poly-epoxy-sulfonate, polycarboxylate, low Polyglycerine, diethylenetriamine class condenses and tartaric mixture.
According to the described multifunctional chlorine-free alkali-free compound concrete slag admixture of claim 1, it is characterized in that 2, described various slag powders can be selected following composition and ratio for use;
The weight proportion of described inorganic industrial waste (is 100% in total amount) is formed:
Lithium slag powders 30～50%
Inferior calcium ground-slag 15～25%
Phosphogypsum slag 5～20%
Fluorite mine tailing 5～15%
Silicon ash 5～15%
Rare earth waste material 5～10%;
The weight proportion of described organic raw material (is 100% in total amount) is formed:
Organosilane 20～40%
Carbon fiber 15～30%
Methyl vinyl silicone rubber 5～15%
Poly-epoxy-sulfonate 5～15%
Polycarboxylate 5～15%
Low Polyglycerine 5～10%
Diethylenetriamine class condenses 5～10%
Tartrate 5～10%.
According to claim 1 or 2 described multifunctional chlorine-free alkali-free compound concrete slag admixtures, it is characterized in that 3, described inorganic industrial waste tails at the fine powder below 5% for the 0.08mm hole sizer; Described organic raw material is the fine powder of the following particle diameter of 1 μ m.
4, the production method of the described multifunctional chlorine-free alkali-free compound concrete slag admixture of a kind of claim 1 may further comprise the steps:
Mixing also by proportioning inorganic industrial waste, grinding to 0.08mm hole sizer tails at the fine powder below 5%;
The following particle diameter of organic raw material grinding to 1 μ m;
The part by weight of pressing inorganic industrial waste 90～95% adds 5～10% organic raw material.
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| CN103113062A (en) * | 2013-02-01 | 2013-05-22 | 同济大学 | Metamorphite machine-made sand concrete capable of inhibiting alkali activity of metamorphite aggregate and preparation method thereof |
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| CN103113062A (en) * | 2013-02-01 | 2013-05-22 | 同济大学 | Metamorphite machine-made sand concrete capable of inhibiting alkali activity of metamorphite aggregate and preparation method thereof |
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| CN109704609A (en) * | 2019-02-22 | 2019-05-03 | 武汉理工大学 | A kind of method that delayed ettringite occurs in inhibition concrete |
| CN109704609B (en) * | 2019-02-22 | 2021-05-04 | 武汉理工大学 | Method for inhibiting generation of delayed ettringite in concrete |
| CN111689701A (en) * | 2020-06-19 | 2020-09-22 | 中山大学 | Electric furnace steel slag-based cement admixture or concrete admixture, preparation method and application |
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| CN1331797C (en) | 2007-08-15 |
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