CN105601162A - Preparation method of concrete erosion medium inhibiting material - Google Patents
Preparation method of concrete erosion medium inhibiting material Download PDFInfo
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- CN105601162A CN105601162A CN201511017065.8A CN201511017065A CN105601162A CN 105601162 A CN105601162 A CN 105601162A CN 201511017065 A CN201511017065 A CN 201511017065A CN 105601162 A CN105601162 A CN 105601162A
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- stearate
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- organosilan
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/61—Corrosion inhibitors
Abstract
The invention provides a preparation method of a concrete erosion medium inhibiting material. The concrete erosion medium inhibiting material has good waterproof and hole plugging effects. The preparation method comprises the following steps that ingredients including hydrophobic stearic acid/stearate, optional organosilane A, hydrophobic modified nano-silica, dispersing agents, emulsifying agents, optional thickening agents, optional defoaming agents and water are mixed to be made into emulsion; the concrete erosion medium inhibiting material is obtained, wherein the mass percentage of the hydrophobic stearic acid/stearate is 10 to 20 percent; the mass percentage of the organosilane A is 0 to 10 percent; the mass percentage of the hydrophobic modified nanometer silicon dioxide is 20 to 40 percent; the hydrophobic modified nanometer silicon dioxide is obtained through performing heating reaction on nanometer silicon dioxide and organosilane B; the mass of the organosilane B is 5 to 10 percent of that of the nanometer silicon dioxide.
Description
Technical field
The present invention relates to concrete field, particularly relate to the preparation that a kind of concrete corrosion medium suppresses materialMethod.
Background technology
Concrete is most widely used construction material in the middle of current civil construction project, but current a lot of coagulationSoil material is because a variety of causes lost efficacy in advance, and some is to cause because structural design is improper, but great majority be byIn the durability deficiency of structure, corrosion and the inefficacy causing. In corrosion process water play a part very important,The particularly concrete material of coastal area, because moisture moist in ocean and air is etched, then addsThe chloride salt being rich in upper seawater, invades xoncrete structure inside, makes it cause because being corroded losing efficacy.Therefore, raising water proof anti-seepage ability is significant for improving concrete durability.
In concrete, add waterproofing agent can improve its water proof anti-seepage ability. Current waterproofing agent kind verietyVarious, wherein the main component of mineral-type waterproofing agent has villaumite, chlorine lithium hydrochlorate, sulfate, waterglass, zirconiumCompound, mineral dust etc.; The main component of organic matter class waterproofing agent has fatty acid metal salts and various emulsion,Also having developed in recent years a kind of swelling agent is host, the intumescent waterproofing agent of compound other additive, but useImproper meeting causes concrete cracking. Existing waterproofing agent waterproof effect is limited, still can not meet architectural engineeringWater proof anti-seepage needs.
Summary of the invention
Goal of the invention
The invention provides the preparation method that a kind of concrete corrosion medium suppresses material, gained concrete corrosion is situated betweenMatter suppresses material, has good waterproof, the effect of plug-hole.
Summary of the invention
The preparation method that concrete corrosion medium of the present invention suppresses material is as follows:
By comprising hydrophobicity stearic acid/stearate, optional organosilan A, hydrophobically modified nanometer titanium dioxideThe component of silicon, dispersant, emulsifying agent, optional thickener, optional defoamer and water is mixed and made into emulsion,Obtain concrete corrosion medium and suppress material; Wherein hydrophobicity stearic acid/stearate, organosilan A, thinThe quality percentage composition of water modified manometer silicon dioxide is respectively: stearic acid/stearate 10%-20%, organicSilane 0-10%, hydrophobically modified nano silicon 20%-40%, described hydrophobically modified nano silicon byAfter nano silicon and organosilan B add thermal response, obtain, the quality of described organosilan B is nano-silicaSiClx 5%-10%.
Hydrophilic nano silicon and stearic acid/stearate/silane systems compatibility is poor, mixesMake the easy layering of emulsion, adopt said method to carry out gained hydrophobically modified nano silicon after modification, both canTo change its too hydrophilic character, the compatibility of improvement and stearic acid/stearate/silane systems is dredged simultaneouslyWater-based is worse than common commercially available hydrophobically modified nano silicon, because if hydrophobicity is very good, needs on the contrary moreThe effectively emulsification of many emulsifying agents. Emulsifying agent can increase concrete amount of air entrainment too much, causes concrete causingThereby declining, density affects concrete durability; Because emulsifying agent is substantially all hydrophilic material, measure simultaneouslyCan affect too much the serviceability of the concrete corrosion medium inhibition material that plays waterproof and plug-hole effect. Described dredgingWater modified manometer silicon dioxide adopts known method modification to obtain, preferably by nano silicon and organosilan BAfter being heated to 90-100 DEG C of reaction 90-120min, obtain.
Preferably, the concrete grammar that described component is mixed and made into emulsion is:
Stearic acid/stearate, optional organosilan A, emulsifying agent, pre-emulsification water are mixed, firmlyUnder resin acid/stearate and the complete melting state of organosilan A in more than 50 DEG C high speed shear emulsification, described inThe quality of pre-emulsification water is the 10%-50% of whole water consumptions in component;
Then in 1min, add fast 5-30 DEG C of remaining water, high speed shear is stirred to and mixes;
Continue to add dispersant, hydrophobically modified nano silicon, optional thickener and optional defoamer,Mix and obtain emulsion, be described concrete corrosion medium and suppress material.
Described " stearic acid/stearate, optional organosilan A, emulsifying agent, pre-emulsification water are mixed,Under stearic acid/stearate and the complete melting state of organosilan A in more than 50 DEG C high speed shear emulsification ",While referring to high speed shear emulsification, stearic acid/stearate and organosilan A need always in melting state,In order to reach this purpose, can be first stearic acid/stearate and organosilan A be melted, then with emulsifying agent,(emulsifying agent also can be at stearic acid/stearate and organosilicon in the hot aqueous dispersions mixing of pre-emulsification water compositionAlkane A adds while thawing), then high speed shear emulsification more than 50 DEG C, also can be directly by stearic acid/tristearinHeating after hydrochlorate and organosilan A, emulsifying agent, pre-emulsification water mix, makes stearic acid/stearate and hasAfter machine silane A melts completely, high speed shear emulsification more than 50 DEG C. Preferably: by stearic acid/tristearinHydrochlorate, organosilan are heated to 65-200 DEG C of thawing, add the pre-emulsification water group of emulsifying agent, 50-100 DEG CThe aqueous dispersions becoming, high speed shear emulsification more than 50 DEG C.
Adopt said method to prepare concrete corrosion medium and suppress material, without natural cooling process, simple to operateEnergy-efficient again; And under the condition of only having a small amount of emulsifying agent, just can prepare stable water evaporation inhibitorEmulsion. Therefore the concrete corrosion medium that, adopts described method can prepare high solids content suppresses material.
High speed shear emulsification method is techniques well known, those skilled in the art can through test determine specifically turnSpeed and incorporation time. Preferably, described high speed shear emulsification is to cut at a high speed under 1500-3000r/min rotating speedCut 10-30min, it is to stir 10-30min in 1500-3000r/min high speed shear that described high speed shear stirs.
Preferably, described stearic acid/stearate be stearic acid, aluminum stearate, zinc stearate, calcium stearate,At least one in ammonium stearate.
Preferably, described organosilan A, organosilan B be independently of each other n-octyl triethoxysilane,Propyl-triethoxysilicane or MTES.
Emulsifying agent, dispersant, thickener and defoamer are this area usual component, can determine concrete thing through testingMatter.
Preferably, described emulsifying agent comprises nonionic emulsifier and anion emulsifier, wherein nonionic emulsifierWith anion emulsifier concrete corrosion medium suppress mass percent in material be respectively 1.5%～3.5%,0.1%～0.3%. More preferably described nonionic emulsifier is peregal 15, peregal 20, peregal 25, tellsTemperature 60, Tween 80, tween 70, polysorbate85, castor oil polyoxyethylene ether EL-40, castor oil polyoxyethyleneAt least one in ether EL-60;
Anion emulsifier be lauryl sodium sulfate, ethoxylated alkyl sulfate, Sucker plucker ether sodium sulfate,Isomery alcohol polyethenoxy ether sodium sulfate, lauryl alcohol sodium sulphate, neopelex, alcohol ether sulfosuccinicAt least one in acid monoester disodium salt.
Preferably,
Described dispersant is Sodium Polyacrylate dispersant or organosilicon dispersant, and more preferably Sodium Polyacrylate dispersesAgent, its mass percent suppressing in material component at concrete corrosion medium is 1%-5%;
Described thickener is at least one in polyethylene glycol, polyacrylamide or hydroxyethylcellulose, at coagulationThe mass percent that soil etching medium suppresses in material component is 0-1%; Wherein, the molecule of described polyethylene glycolAmount is preferably 5000-20000, and the molecular weight of described polyacrylamide is preferably not less than 3,000,000, described hydroxyl secondThe cellulosic viscosity of base is preferably 20000-50000mPas;
Described defoamer is mineral oil antifoam agent, suppresses the quality percentage in material component at concrete corrosion mediumThan being 0-0.3%.
Described " at least one ", refers to the mixture that can use one or more arbitrary proportions in optional material.
Advantage of the present invention is:
(1) hydrophobicity stearic acid/stearate has the hydrophobic effect suitable with silane, can be compound with silane,And low price;
(2) the hydrophobically modified nano silicon that has a nano-scale not only has excellent plug-hole to concreteEffect, can anti-sealing and chloride salt enter inside concrete by pore, thereby greatly improve concreteDurability, meanwhile, hydrophobically modified nano silicon can greatly improve original hydrophilic nano silicon andThereby the silane that hydrophobicity is strong, the compatibility of stearic acid/stearate improve concrete corrosion medium inhibition materialStability;
(3) adopt preferred emulsification preparation technology without natural cooling process, simple to operate energy-efficient again;And under the condition of only having a small amount of emulsifying agent, just can prepare the stable concrete corrosion of relative high solids content and be situated betweenMatter suppresses material.
Detailed description of the invention
In order to understand better the present invention, below in conjunction with embodiment, content of the present invention is further described,But content of the present invention is not limited to the scope of embodiment statement.
In each embodiment, concrete charge pass is according to professional standard JTJ275-2000 " concrete for marine works knotStructure anticorrosion technique specification " require to measure. Chlorine ion concentration is according to GB/T50082-2009 " normal concreteLong-term behaviour and endurance quality experimental technique standard " require to measure, concrete crushing strength is according to GB/T107-87" Standard for inspection and assessment of strength of concrete ", concrete water absorption rate is according to British Standard BS1881-122-2011" aa " requires to measure.
The centrifugal 10min of stability test method: 3000r/min, observes and has or not precipitation, floating thing etc. inhomogeneousPhenomenon.
In embodiment, material used is as shown in table 1.
Table 1
| Material | Producer | Purity | Viscosity or molecular weight |
| Stearic acid/stearate | Chemical Reagent Co., Ltd., Sinopharm Group | ≥99％ | |
| Soap | Shanghai Ling Feng chemical reagent Co., Ltd | ≥99％ | |
| Organosilan | Hangzhou Jesse blocks Chemical Co., Ltd. | ≥95％ | |
| Hydroxyethylcellulose | Changzhou Kai Jie Chemical Co., Ltd. | ≥85％ | Viscosity 50000mPas |
| Polyacrylamide | Chemical Reagent Co., Ltd., Sinopharm Group | ≥85％ | Molecular weight >=3,000,000 |
| Polyethylene glycol | Hai'an petrochemical industry Co., Ltd | ≥99％ | Molecular weight 5000-20000 |
| Castor oil polyoxyethylene ether class emulsifying agent | Linyi City Lanshan District Lv Sen Chemical Co., Ltd. | ≥99％ | |
| Tween emulsifier | Hai'an petrochemical industry Co., Ltd | ≥99％ | |
| Peregal emulsifying agent | Hai'an petrochemical industry Co., Ltd | ≥98％ | |
| Anion emulsifier | Linyi City Lanshan District Lv Sen Chemical Co., Ltd. | ≥99％ |
Embodiment 1
200g nano silicon, 10g MTMS are mixed, continue stir and heatTo 100 DEG C of reaction 90min, obtain hydrophobically modified nano silicon;
50g stearic acid is heated to 65 DEG C of thawings, adds by 5g nonionic emulsifier peregal 20,1g tenThe aqueous dispersions of the water composition of sodium dialkyl sulfate SDS, 50g65 DEG C, 1500r/min high speed shear 10min,Then add fast 25 DEG C of water of 284g to stir 10min, continue to add 5g Sodium Polyacrylate dispersant, 100gNano silicon, 5g hydroxyethylcellulose thickener, 0.5g mineral oil antifoam agent that hydrophobically modified is crossed,Obtain concrete corrosion medium and suppress material. Testing its solid content is 33%.
Embodiment 2
200g nano silicon, 10g MTES are mixed, continue stir and heatTo 100 DEG C of reaction 90min, obtain hydrophobically modified nano silicon;
50g stearic acid is heated to 75 DEG C of thawings, adds by 5g MTES, 9g nonionic breastThe aqueous dispersions of the water composition of agent Tween 80,1g ethoxylated alkyl sulfate, 50g75 DEG C, 2000r/minHigh speed shear 20min, then adds 25 DEG C of water of 223g to stir 10min fast, continues to add 10g poly-thirdNano silicon, 2g hydroxyethylcellulose thickener, 0.5g that olefin(e) acid sodium dispersant, 150g hydrophobically modified are crossedMineral oil antifoam agent, obtains concrete corrosion medium and suppresses material. Testing its solid content is 45%.
Embodiment 3
200g nano silicon, 10g propyl-triethoxysilicane are mixed, continue stir and heatTo 100 DEG C of reaction 90min, obtain hydrophobically modified nano silicon;
50g stearic acid is heated to 85 DEG C of thawings, adds by 10g propyl-triethoxysilicane, 9g nonionicThe aqueous dispersions of the water composition of emulsifier tween 80,1g isomery alcohol polyethenoxy ether sodium sulfate, 50g85 DEG C,2000r/min high speed shear 20min, then adds 15 DEG C of water of 162g to stir 20min fast, continues to addEnter nano silicon, 4g hydroxyethylcellulose that 15g Sodium Polyacrylate dispersant, 200g hydrophobically modified are crossedThickener, obtains concrete corrosion medium and suppresses material. Testing its solid content is 58%.
Embodiment 4
200g nano silicon, 10g octyltri-ethoxysilane are mixed, continue stir and heatTo 100 DEG C of reaction 90min, obtain hydrophobically modified nano silicon;
75g stearic acid is heated to 85 DEG C of thawings, adds by 12g nonionic emulsifier castor oil polyoxyethyleneThe aqueous dispersions of the water composition of ether EL-40,1g lauryl alcohol sodium sulphate, 75g85 DEG C, 2500r/min at a high speedShear 20min, then add fast 15 DEG C of water of 225g to stir 20min, continue to add 10g polyacrylic acidNano silicon, 1g polyacrylamide thickener, 0.5g mineral that sodium dispersant, 100g hydrophobically modified are crossedOil defoamer, obtains concrete corrosion medium and suppresses material. Testing its solid content is 40%.
Embodiment 5
200g nano silicon, 10g octyltri-ethoxysilane are mixed, be heated to 100 DEG C insteadAnswer 90min, obtain hydrophobically modified nano silicon;
50g stearic acid is heated to 85 DEG C of thawings, add by 25g octyltri-ethoxysilane, 12g non-fromThe aqueous dispersions of the water composition of sub-emulsifier tween 60,1g neopelex, 75g85 DEG C,3000r/min high speed shear 30min, then adds 6 DEG C of water of 169g to stir 30min fast, continues to addNano silicon, the thickening of 3g polyacrylamide that 15g Sodium Polyacrylate dispersant, 150g hydrophobically modified are crossedAgent, 0.5g mineral oil antifoam agent, obtain concrete corrosion medium and suppress material. Testing its solid content is 51%.
Embodiment 6
200g nano silicon, 10g octyltri-ethoxysilane are mixed, continue stir and heatTo 100 DEG C of reaction 90min, obtain hydrophobically modified nano silicon;
100g aluminum stearate is heated to 150 DEG C of thawings, adds by 50g octyltri-ethoxysilane, 17gThe aqueous dispersions of the water composition of nonionic emulsifier polysorbate85,1.5g dodecyl sodium sulfate, 100g90 DEG C,3000r/min high speed shear 30min, then adds 6 DEG C of water of 105g to stir 30min fast, continues to addNano silicon, 1.5g mineral oil antifoam agent that 25g Sodium Polyacrylate dispersant, 100g hydrophobically modified are crossed,Obtain concrete corrosion medium and suppress material. Testing its solid content is 60%.
Proportioning and the stability of each embodiment gained concrete water evaporation inhibitor are as shown in table 2. Table 3 is for mixingConcrete corrosion medium suppresses the testing concrete performance result of material. According to identical emulsion solid content volume (emulsionSolid weight/weight concrete=0.7%) carry out testing concrete performance, and with adding Concrete etching medium notSuppress the blank concrete of material in contrast, concrete mix is: cement 3.8Kg, and flyash 1.66Kg,Slag 2.94Kg, sand 15Kg, great Shi 15.15Kg, gravelstone 6.5Kg, water 2.94Kg, wherein cement isConch brand P.C42.5R cement. Mix the coagulation of the concrete corrosion medium inhibition material in embodiment 1-628 days electric flux≤1000C of soil, 28 days chlorine ion concentration≤10 × 10-12mg/cm2D, air content≤2%, 28It compression strength >=40MPa, water absorption rate≤2.0%.
The each embodiment component proportion of table 2 and solid content list
Table 3 adding Concrete etching medium suppresses the concrete the performance test results of material
| Numbering | The 28 day length of time water absorption rate | The 28 day length of time electric flux | 28 days chlorine ion concentrations |
| Blank group | 100％ | 100％ | 100％ |
| Embodiment 1 | 70％ | 71％ | 55％ |
| Embodiment 2 | 64％ | 64％ | 45％ |
| Embodiment 3 | 62％ | 52％ | 57％ |
| Embodiment 4 | 59％ | 68％ | 53％ |
| Embodiment 5 | 53％ | 61％ | 51％ |
| Embodiment 6 | 50％ | 57％ | 41％ |
Claims (10)
1. concrete corrosion medium suppresses a preparation method for material, it is characterized in that, by comprising that hydrophobicity is hardResin acid/stearate, optional organosilan A, hydrophobically modified nano silicon, dispersant, emulsifying agent,The component of optional thickener, optional defoamer and water is mixed and made into emulsion, obtains concrete corrosion medium and presses downPrepared material; Wherein hydrophobicity stearic acid/stearate, organosilan A, hydrophobically modified nano siliconQuality percentage composition is respectively: stearic acid/stearate 10%-20%, organosilan 0-10%, hydrophobically modifiedNano silicon 20%-40%, described hydrophobically modified nano silicon is by nano silicon and organosiliconAlkane B obtains after adding thermal response, the 5%-10% that the quality of described organosilan B is nano silicon.
2. concrete corrosion medium as claimed in claim 1 suppresses the preparation method of material, it is characterized in that,The concrete grammar that described component is mixed and made into emulsion is:
Stearic acid/stearate, optional organosilan A, emulsifying agent, pre-emulsification water are mixed, firmlyUnder resin acid/stearate and the complete melting state of organosilan A in more than 50 DEG C high speed shear emulsification, described inThe quality of pre-emulsification water is the 10%-50% of whole water consumptions in component;
Then in 1min, add fast 5-30 DEG C of remaining water, high speed shear is stirred to and mixes;
Continue to add dispersant, hydrophobically modified nano silicon, optional thickener and optional defoamer,Mix and obtain emulsion, be described concrete corrosion medium and suppress material.
3. concrete corrosion medium as claimed in claim 2 suppresses the preparation method of material, it is characterized in that,Stearic acid/stearate, organosilan are heated to 65-200 DEG C of thawing, add emulsifying agent, 50-100 DEG CThe aqueous dispersions of pre-emulsification water composition, high speed shear emulsification more than 50 DEG C.
4. concrete corrosion medium as claimed in claim 1 suppresses the preparation method of material, it is characterized in that,Described high speed shear emulsification is high speed shear 10-30min under 1500-3000r/min rotating speed, and described high speed is cutCutting stirring is to stir 10-30min in 1500-3000r/min high speed shear.
5. the concrete corrosion medium as described in any one in claim 1-4 suppresses the preparation method of material, itsBe characterised in that, described emulsifying agent comprises nonionic emulsifier and anion emulsifier, wherein nonionic emulsifier andAnion emulsifier concrete corrosion medium suppress mass percent in material be respectively 1.5%～3.5%,0.1％～0.3％。
6. the preparation method of concrete water evaporation inhibitor as claimed in claim 5, is characterized in that,
Described nonionic emulsifier be peregal 15, peregal 20, peregal 25, polysorbate60, Tween 80,In tween 70, polysorbate85, castor oil polyoxyethylene ether EL-40, castor oil polyoxyethylene ether EL-60 extremelyFew a kind of;
Anion emulsifier be lauryl sodium sulfate, ethoxylated alkyl sulfate, Sucker plucker ether sodium sulfate,Isomery alcohol polyethenoxy ether sodium sulfate, lauryl alcohol sodium sulphate, neopelex, alcohol ether sulfosuccinicAt least one in acid monoester disodium salt.
7. the concrete corrosion medium as described in any one in claim 1-4 suppresses the preparation method of material, itsBe characterised in that,
Described dispersant is Sodium Polyacrylate dispersant or organosilicon dispersant, suppresses material at concrete corrosion mediumMass percent in material component is 1%-5%;
Described thickener is at least one in polyethylene glycol, polyacrylamide or hydroxyethylcellulose, at coagulationThe mass percent that soil etching medium suppresses in material component is 0-1%;
Described defoamer is mineral oil antifoam agent, suppresses the quality percentage in material component at concrete corrosion mediumThan being 0-0.3%.
8. concrete corrosion medium as claimed in claim 7 suppresses the preparation method of material, it is characterized in that,The molecular weight of described polyethylene glycol is 5000-20000, and the molecular weight of described polyacrylamide is not less than 3,000,000,The viscosity of described hydroxyethylcellulose is 20000-50000mPas.
9. the concrete corrosion medium as described in any one in claim 1-4 suppresses the preparation method of material, itsBe characterised in that, described stearic acid/stearate is stearic acid, aluminum stearate, zinc stearate, calcium stearate, hardAt least one in ester acid ammonium.
10. the concrete corrosion medium as described in any one in claim 1-4 suppresses the preparation method of material,It is characterized in that, described organosilan A, organosilan B be independently of each other n-octyl triethoxysilane,Propyl-triethoxysilicane or MTES.
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| CN106186803A (en) * | 2016-07-25 | 2016-12-07 | 江苏苏博特新材料股份有限公司 | A kind of silane paste concrete protectant of high hydrophobicity and preparation method thereof |
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