CN102674743B - Fly ash concrete carbon adsorption inhibitor and application thereof - Google Patents
Fly ash concrete carbon adsorption inhibitor and application thereof Download PDFInfo
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- CN102674743B CN102674743B CN 201210184309 CN201210184309A CN102674743B CN 102674743 B CN102674743 B CN 102674743B CN 201210184309 CN201210184309 CN 201210184309 CN 201210184309 A CN201210184309 A CN 201210184309A CN 102674743 B CN102674743 B CN 102674743B
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Abstract
The invention discloses a fly ash concrete carbon adsorption inhibitor comprising the following components by weight: 5-10 parts of aromatic amino micromolecule, 12-26 parts of aromatic sodium sulfonate, 38-50 parts of alcohol derivative, 8-14 parts of neighboring hydroxybenzoic acid salt, 3-8 parts of crylic acid-2-acrylamide-2-methyl propanesulfonic acid copolymer, 3-10 parts of ethanediamine tetramethylene phosphonate and 6-10 parts of organosilan. The fly ash concrete carbon adsorption inhibitor inhibits adsorption of an additive by carbon particles in the fly ash, improves the performance stability and durability of concrete, is favorably adapted to various additives, has favorable inhibitive ability to the fly ash concrete carbon adsorption with various mixing amount and quality, and does not influence the performance of the concrete. The inhibitor is small in the mixing amount so that the strength of concrete is improved and the construction is convenient.
Description
Technical field
The present invention relates to building material field, particularly a kind of flyash concrete carbon absorption inhibitor and application thereof.
Background technology
Flyash mainly is to be the solid waste of the fuel-burning power plant discharge of fuel with the coal.Wherein discharge, mainly be flyash through the collected solid particulate of fly-ash separator from flue.The flyash particle is with its spherical granule-morphology, has the workability that can improve the coagulation scholar and can improve longterm strength by pozzolanic reaction, can reduce the concrete water amount, reduces the concrete cement volume and reduce the practical values such as heat that produce because of hydrated reaction of cement thereby be acknowledged as.
Wherein, contain the concrete of flyash mineral adulterant, be referred to as flyash concrete, along with the implementation of national energy-saving and emission-reduction, environmental protection policy, the utilization ratio of flyash in concrete is also more and more higher in recent years.Yet on the other hand, because flyash contains unburned carbon granules, it has very strong adsorption to air entrapment agent, thereby cause volume in the middle of the air entrapment agent use increase or air content through the time loss increase, cause certain difficulty to engineering construction, also brought hidden danger to concrete durability.Because the difference of flyash loss on ignition and fineness, it is to the adsorptive capacity difference of air entrapment agent, air entrapment agent volume deficiency, and workability of concrete is poor, is difficult to construction, and the air entrapment agent volume is excessive, and concrete strength can significantly reduce.Unburned carbon granules in the flyash to the adsorption of water reducer, has also increased concrete water consumption in addition, has reduced concrete strength.
Summary of the invention
Goal of the invention: at above-mentioned the deficiencies in the prior art, it is less that the technical problem to be solved in the present invention provides a kind of bleed effect, and the flyash concrete carbon that is conducive to improve the concrete hole structure, improve workability of concrete, intensity and weather resistance adsorbs inhibitor and application thereof.
Technical scheme: for solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of flyash concrete carbon adsorbs inhibitor, comprises the component of following mass fraction: the amino small molecules 5-10 of aromatic series part, aromatic sulphonate 12-26 part, alcohol derivatives 38-50 part, salicylic acid salt 8-14 part, vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid multipolymer 3-8 part, ethylenediamine tetramethylene phosphonic acid salt 3-10 part, organosilane 6-10 part.
Wherein, the amino small molecules of described aromatic series is one or both in benzylamine, the benzhydrylamine.
Wherein, described aromatic sulphonate is the di-isopropyl sodium naphthalene sulfonate.
Wherein, described alcohol derivatives is one or more in ethylene glycol monomethyl ether, ethylene glycol phenyl ether, the Diethylene Glycol butyl ether.
Wherein, described salicylic acid salt is the salicylic acid lithium.
Wherein, described vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid multipolymer, its molecular weight is at 1000-2000.
Wherein, described ethylenediamine tetramethylene phosphonic acid salt is sodium ethylenediamine tetramethylenephosphonate.
Wherein, described organosilane is γ-glycidyl ether oxygen propyl trimethoxy silicane.
The application of above-mentioned flyash concrete carbon absorption inhibitor in the preparation flyash concrete.
As the further improvement of using, the volume of described flyash concrete carbon absorption inhibitor is the 0.005-0.05% of gelling material weight in the concrete, and is sprayed on the flyash surface with spraying method, mixes use with other components of concrete again after stirring.Wherein gelling material is the mixture of flyash, cement, other mineral admixtures.
Beneficial effect: compared with prior art, advantage of the present invention is as follows:
1) utilize flyash unburn carbon granules to the preferentially adsorbed of aromatics, and vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid multipolymer and sodium ethylenediamine tetramethylenephosphonate are to carbon granule good adsorption avidity, adopt salicylic acid lithium, vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid multipolymer and sodium ethylenediamine tetramethylenephosphonate pre-treating fly ash, fill up the hole of flyash carbon granules as sacrifice agent; And organosilane under the effect of water and air can with the carbon granule effect, generate silicon-dioxide, fill up the carbon granule micro-pore, simultaneously in the hydrated cementitious later stage, this part silicon-dioxide can also participate in the flyash pozzolanic reaction, improves late strength of concrete; Its effect is subjected to time effects less and be subjected to flyash carbon granule content influence less to the amino small molecules of aromatic series as flyash carbon absorption inhibitor, and the concrete bubble stability is strong; And di-isopropyl sodium naphthalene sulfonate and alcohol derivatives are adsorbed inhibitor as flyash carbon, and the concrete bubble is less, and the bubble size is even, the variation coefficient is little, are conducive to improve the concrete hole structure, improve concrete durability.
2) di-isopropyl sodium naphthalene sulfonate, salicylic acid lithium and sodium ethylenediamine tetramethylenephosphonate have certain excitation as a kind of alkali to flyash, can improve the activity of flyash, increase the cohesive force between gelling material and the aggregate, thereby can improve concrete intensity.
3) the present invention utilizes benzylamine, the di-isopropyl sodium naphthalene sulfonate, ethylene glycol phenyl ether, the salicylic acid lithium, vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid multipolymer, sodium ethylenediamine tetramethylenephosphonate, γ-glycidyl ether oxygen propyl trimethoxy silicane is formed flyash concrete carbon absorption inhibitor by a certain percentage, volume is few, be subjected to that doping quantity of fly ash influences little in the concrete, be subjected to flyash carbon granule content influence little, the bleed effect of flyash concrete carbon absorption inhibitor of the present invention own is less, and when volume is too much concrete is not had detrimentally affect, be conducive to improve the concrete hole structure, improve workability of concrete, intensity and weather resistance.
Embodiment
The present invention is further described below by specific embodiment; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the principle of the invention; can also make some modification and improvement, these also should be considered as belonging to protection scope of the present invention.
In the following embodiments, if no special instructions, be mass fraction.
Embodiment 1: flyash concrete carbon absorption inhibitor proportioning is: 7 parts of benzylamines, 26 parts of di-isopropyl sodium naphthalene sulfonates, 38 parts of ethylene glycol phenyl ethers, 12 parts of salicylic acid lithiums, 6 parts in vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid multipolymer (molecular-weight average is 1000), 5 parts of sodium ethylenediamine tetramethylenephosphonates, 6 parts of γ-glycidyl ether oxygen propyl trimethoxy silicanes, volume is 0.008% of gelling material gross weight.
With the application of above-mentioned flyash concrete carbon absorption inhibitor in the preparation flyash concrete, be specially: above-mentioned inhibitor is sprayed on the flyash surface with spraying method, mixes use with other components of concrete again after stirring.
Flyash concrete is made up of flyash, cement, other mineral admixtures, water, chemical admixture, coarse aggregate, fine aggregate.Wherein gelling material is: flyash, cement, other mineral admixtures.
The proportioning of each component of concrete is cement: flyash: sand: stone: water is 300:100:735:1055:170.
Concrete air-entrainer is example with the aniorfic surfactant Sodium dodecylbenzene sulfonate, and volume is 0.015% of gelling material gross weight.
Cement water reducing agent is example with the poly carboxylic acid admixture, and used poly carboxylic acid admixture is by polyester and polyethers additive complex, and its ratio is 4:6, solid content 15%, and water-reducing rate 16%, volume are 1.5% of gelling material gross weight.
Wherein flyash accounts for 40% of gelling material gross weight, and wherein we select loss on ignition to be respectively 1.23%, 8.33% flyash and do experiment, are designated as A flyash and B flyash respectively.
Embodiment 2: substantially the same manner as Example 1, difference is flyash concrete carbon absorption inhibitor proportioning and volume, and is specific as follows: 5 parts of benzylamines, 12 parts of di-isopropyl sodium naphthalene sulfonates, 50 parts of ethylene glycol phenyl ethers, 14 parts of salicylic acid lithiums, 6 parts in vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid multipolymer (molecular-weight average is 1200), 3 parts of sodium ethylenediamine tetramethylenephosphonates, 10 parts of γ-glycidyl ether oxygen propyl trimethoxy silicanes.
The volume of flyash concrete carbon absorption inhibitor is 0.005% of binder total amount.
Embodiment 3: substantially the same manner as Example 1, difference is flyash concrete carbon absorption inhibitor proportioning and volume, and is specific as follows: 7 parts of benzylamines, 26 parts of di-isopropyl sodium naphthalene sulfonates, 38 parts of ethylene glycol phenyl ethers, 12 parts of salicylic acid lithiums, 6 parts in vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid multipolymer (molecular-weight average is 1500), 5 parts of sodium ethylenediamine tetramethylenephosphonates, 6 parts of γ-glycidyl ether oxygen propyl trimethoxy silicanes.
The volume of flyash concrete carbon absorption inhibitor is 0.05% of binder total amount.
Its performance performance assessment criteria is carried out according to " Standard for test methods of properties of ordinary concrete mixture " (GB/T 50080-2002) and " normal concrete mechanical test method " (GB/T 50081-2002), and its specific performance index is as shown in table 1.
Table 1
Embodiment 4: substantially the same manner as Example 1, difference is flyash concrete carbon absorption inhibitor proportioning and volume, and is specific as follows: 6 parts of benzylamines, 20 parts of di-isopropyl sodium naphthalene sulfonates, 42 parts of ethylene glycol phenyl ethers, 11 parts of salicylic acid lithiums, 8 parts in vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid multipolymer (molecular-weight average is 1800), 5 parts of sodium ethylenediamine tetramethylenephosphonates, 8 parts of γ-glycidyl ether oxygen propyl trimethoxy silicanes.
The volume of flyash concrete carbon absorption inhibitor is 0.015% of binder total amount.
Embodiment 5: substantially the same manner as Example 1, difference is flyash concrete carbon absorption inhibitor proportioning and volume, and is specific as follows: 9 parts of benzylamines, 20 parts of di-isopropyl sodium naphthalene sulfonates, 42 parts of ethylene glycol phenyl ethers, 8 parts of salicylic acid lithiums, 8 parts in vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid multipolymer (molecular-weight average is 2000), 5 parts of sodium ethylenediamine tetramethylenephosphonates, 8 parts of γ-glycidyl ether oxygen propyl trimethoxy silicanes.
The volume of flyash concrete carbon absorption inhibitor is 0.03% of binder total amount.
Embodiment 6: substantially the same manner as Example 1, difference is flyash concrete carbon absorption inhibitor proportioning and volume, and is specific as follows: 10 parts of benzylamines, 19 parts of di-isopropyl sodium naphthalene sulfonates, 42 parts of ethylene glycol phenyl ethers, 8 parts of salicylic acid lithiums, 3 parts in vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid multipolymer (molecular-weight average is 1700), 10 parts of sodium ethylenediamine tetramethylenephosphonates, 8 parts of γ-glycidyl ether oxygen propyl trimethoxy silicanes.
The volume of flyash concrete carbon absorption inhibitor is 0.035% of binder total amount.
Embodiment 7: substantially the same manner as Example 1, difference is to replace benzylamine with benzhydrylamine, spent glycol methyl ether, replacement ethylene glycol phenyl ether.
Embodiment 8: substantially the same manner as Example 1, difference is to replace benzylamine with benzhydrylamine, with Diethylene Glycol butyl ether replacement ethylene glycol phenyl ether.
Embodiment 9: substantially the same manner as Example 1, difference is, the amino small molecules of aromatic series is that benzylamine and benzhydrylamine mix with arbitrary proportion, and alcohol derivatives is that ethylene glycol monomethyl ether, ethylene glycol phenyl ether, Diethylene Glycol butyl ether mix with arbitrary proportion.
Embodiment 10: substantially the same manner as Example 1, difference is, alcohol derivatives is the mixture of ethylene glycol monomethyl ether, ethylene glycol phenyl ether, and wherein the weight ratio of ethylene glycol monomethyl ether, ethylene glycol phenyl ether is 1:3.
Embodiment 11: substantially the same manner as Example 1, difference is, alcohol derivatives is the mixture of Diethylene Glycol butyl ether, ethylene glycol phenyl ether, and wherein the weight ratio of Diethylene Glycol butyl ether, ethylene glycol phenyl ether is 1:1.
Embodiment 12: substantially the same manner as Example 1, difference is, alcohol derivatives is the mixture of Diethylene Glycol butyl ether, ethylene glycol monomethyl ether, and wherein the weight ratio of Diethylene Glycol butyl ether, ethylene glycol monomethyl ether is 1:1.
The present invention utilizes the unburned carbon contained particle absorption of the flyash performance similar to the charcoal absorption performance, the unburned carbon contained particle preferentially adsorbed of flyash aromatic series macromolecular cpd, and vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid multipolymer and sodium ethylenediamine tetramethylenephosphonate are to carbon granule good adsorption avidity, adopt salicylic acid lithium, vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid multipolymer and sodium ethylenediamine tetramethylenephosphonate, powder filler coal ash carbon granule is than macrovoid; And γ-glycidyl ether oxygen propyl trimethoxy silicane under the effect of water and air can with the carbon granule effect, generate silicon-dioxide, fill up the carbon granule micro-pore, simultaneously in the hydrated cementitious later stage, this part silicon-dioxide can also participate in the flyash pozzolanic reaction, improves concrete strength; Utilize the surface action of the amino small molecules of aromatic series, di-isopropyl sodium naphthalene sulfonate, alcohol derivatives and flyash, reduce flyash to the adsorption of admixture, regulate the concrete hole structure, improve workability of concrete, weather resistance, utilize the alkalimetal ion alkali excitation of salicylic acid lithium, di-isopropyl sodium naphthalene sulfonate and sodium ethylenediamine tetramethylenephosphonate, reduce concrete interface zone of transition Ca (OH)
2Content strengthens gelling material and aggregate cohesive force, improves the concrete bending and compressive strength.Simultaneously, the use of flyash concrete carbon absorption inhibitor has reduced the usage quantity of water reducer in the concrete, has reduced concrete shrinkage.
Claims (6)
1. a flyash concrete carbon adsorbs inhibitor, it is characterized in that, comprise the component of following mass fraction: the amino small molecules 5-10 of aromatic series part, aromatic sulphonate 12-26 part, alcohol derivatives 38-50 part, salicylic acid salt 8-14 part, vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid multipolymer 3-8 part, ethylenediamine tetramethylene phosphonic acid salt 3-10 part, organosilane 6-10 part;
The amino small molecules of described aromatic series is one or both in benzylamine, the benzhydrylamine;
Described aromatic sulphonate is the di-isopropyl sodium naphthalene sulfonate;
Described alcohol derivatives is one or more in ethylene glycol monomethyl ether, ethylene glycol phenyl ether, the Diethylene Glycol butyl ether;
Described organosilane is γ-glycidyl ether oxygen propyl trimethoxy silicane.
2. flyash concrete carbon according to claim 1 adsorbs inhibitor, and it is characterized in that: described salicylic acid salt is the salicylic acid lithium.
3. flyash concrete carbon according to claim 1 adsorbs inhibitor, and it is characterized in that: described vinylformic acid-2-acrylamide-2-methyl propane sulfonic acid molecular weight of copolymer is between 1000-2000.
4. flyash concrete carbon according to claim 1 adsorbs inhibitor, and it is characterized in that: described ethylenediamine tetramethylene phosphonic acid salt is sodium ethylenediamine tetramethylenephosphonate.
5. the application of flyash concrete carbon absorption inhibitor according to claim 1 in the preparation flyash concrete.
6. application according to claim 5, it is characterized in that, the volume of described flyash concrete carbon absorption inhibitor is the 0.005-0.05% of gelling material weight in the concrete, and is sprayed on the flyash surface with spraying method, mixes use with other components of concrete again after stirring.
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| CN103419228A (en) * | 2013-08-29 | 2013-12-04 | 冯江生 | Cutting tool for inner bores of sealing ring |
| CN103601384B (en) * | 2013-10-29 | 2016-03-02 | 江苏名和集团有限公司 | A kind of method of modifying of desulfurized powder coal ash |
| CN107418585B (en) * | 2017-07-24 | 2020-11-10 | 天津市德宇生物工程技术有限公司 | Saline-alkali soil conditioner |
| CN110615641A (en) * | 2019-10-07 | 2019-12-27 | 山西省交通科技研发有限公司 | Foam concrete formula for platform back backfilling and processing equipment thereof |
| CN111892358B (en) * | 2020-08-18 | 2022-04-19 | 山东华爵混凝土有限公司 | Anti-freezing pump concrete and preparation method thereof |
| CN113831048B (en) * | 2021-10-13 | 2022-05-27 | 安徽瑞和新材料有限公司 | Preparation method of air entraining agent carbon adsorption resistant sacrificial agent |
| CN114057428B (en) * | 2022-01-17 | 2022-04-12 | 甘肃智通科技工程检测咨询有限公司 | Oil shale semicoke adsorption inhibitor and application thereof in concrete preparation |
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| CN1741864A (en) * | 2003-01-24 | 2006-03-01 | 博拉尔材料技术有限公司 | System and method for treating fly ash |
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| CN1741864A (en) * | 2003-01-24 | 2006-03-01 | 博拉尔材料技术有限公司 | System and method for treating fly ash |
| CN1761632A (en) * | 2003-01-24 | 2006-04-19 | 汉迪化学品有限公司 | Sacrificial agents for fly ash concrete |
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