CN107840592A - A kind of concrete self-repair function additive and preparation method thereof - Google Patents

A kind of concrete self-repair function additive and preparation method thereof Download PDF

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CN107840592A
CN107840592A CN201711094897.9A CN201711094897A CN107840592A CN 107840592 A CN107840592 A CN 107840592A CN 201711094897 A CN201711094897 A CN 201711094897A CN 107840592 A CN107840592 A CN 107840592A
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concrete
function additive
parts
water
repair function
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CN107840592B (en
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余剑英
查亚刚
王瑞阳
何鹏
李颖
谢君
吴少鹏
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039Premixtures of ingredients
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/08Acids or salts thereof
    • C04B22/10Acids or salts thereof containing carbon in the anion
    • C04B22/106Bicarbonates
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F122/00Homopolymers of compounds having one or more unsaturated aliphatic radicals each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides or nitriles thereof
    • C08F122/04Anhydrides, e.g. cyclic anhydrides
    • C08F122/06Maleic anhydride

Abstract

The invention belongs to building material field, and in particular to a kind of concrete self-repair function additive and preparation method thereof.The function additive is mixed with by polybasic ion complexing agent, calcium bicarbonate, water-absorbing resins to be formed, and each raw materials by weight portion is calculated as:40~60 parts of polybasic ion complexing agent, 40~50 parts of calcium bicarbonate, 1~5 part of water-absorbing resins.The function additive has the advantages that self-reparing capability is strong, and wide seam selfreparing effect is good, reparation speed is fast, and no deferred action, practicality is stronger, has stronger application and popularization value in concrete selfreparing field.

Description

A kind of concrete self-repair function additive and preparation method thereof
Technical field
The invention belongs to building material field, and in particular to a kind of concrete self-repair function additive and its preparation side Method.
Background technology
Cement concrete is as important foundation construction material in building construction, road construction, subway tunnel, bridge, water The fields such as storehouse dam, power station, harbour are widely applied.However, concrete is brittle material containing multiple holes, by external environment because The effect of element easily produces internal injury and crack.Damage and crack can reduce the intensity of concrete, aggravate the chemistry of concrete Erosion, the generation of freeze-thaw damage, steel bar corrosion and alkali, the serious durability for reducing concrete structures.
To improve the durability of concrete structures, concrete damage and crack autogenous healing technology are increasingly paid attention to.It is existing There is concrete self-repair technology mainly to have:Addition function additive excite concrete itself component internally damage with it is anti-at crack Answer selfreparing;The microcapsules containing binding agent are filled, binding agent fracture selfreparing after microcapsules rupture;Filled in concrete Microorganism and nutrient solution, by microorganism and nutrient solution reaction manufacture calcite to damage and crack autogenous healing.These selfreparings In technology, there is when there is damage and cracking initiation the problem of capsule is difficult to rupture, and binding agent can not flow out, micro- life in microcapsule method There is the problem of microbial survival phase is short and it can reduce concrete strength in thing method, fail practicality.
Compared with microcapsule method and microbial method, function additive method self-repair technology has certain practicality.Specially The sharp A of CN 101386508 disclose the formula and preparation technology of a kind of creak self-repair material, and the crack of the disclosure of the invention is reviewed one's lessons by oneself The formula of material is again:The oxidation of 62-77% portland cement, 0.2-1% sodium citrate, 3-8% choline, 1-3% The 80-120 mesh of calcium, 22-35%.When crack occurs in concrete, under conditions of having moisture or humidity, the invention utilizes citric acid Sodium forms water-soluble kinetically unstable complex with the calcium ion in concrete, silicate ion respectively with choline, in the hole of concrete Crystallize to form precipitation at gap and crack, realize selfreparing.Patent CN 105884299A disclose a kind of super self-healing yardstick cracking Concrete Thief zone crystallizes repair materials, and the composition of the material is:Portland cement 30~45%, quartz sand 40~ 60%th, flyash 3~15%, silicon ash 1~8%, aluminate cement 1~10%, gypsum 1~10%, sodium hydroxide 0.1~4%, Waterglass 0.1~4%, re-dispersible glue powder 0.1~2%, poly carboxylic acid series water reducer 0.05~1.5%, sodium gluconate 0.01 ~1% and polypropylene fibre 0.1~2.5%.But existing concrete self-repair function additive is present:(1) lemon used Sour sodium, sodium gluconate have very strong inhibitory action to the aquation of cement, belong to typical cement concrete retarder, Shao Liangjia The setting time of concrete will be greatly prolonged by entering;(2) chela that sodium citrate, sodium gluconate etc. are formed after being reacted with calcium ion Conjunction product is loop configuration, and molecular dimension is larger, to the crack of concrete at migration velocity it is slow, or even in some micro-pores It can not migrate across;(3) free calcium ions in concrete and silicate ion are less, sodium citrate, sodium gluconate etc. The quantity of chelating calcium ion is few, and ability of the carrying calcium ion at crack is weak, to being unable to selfreparing compared with wide seam;(4) citric acid With calcium ion chelatropic reaction and migration and function additive and silicate ion into crack occur for sodium, sodium gluconate etc. The ability in the case where having moisture or moist conditions is required to Deng reaction, and crack autogenous healing needs the long period, and concrete Moisture-retaining capacity is very weak, and internal moisture is volatilized quickly, once no moisture or moisture are present in concrete, selfreparing reaction will stop Only, it is difficult to realize and repair well.The presence of these problems seriously limits function additive answering in concrete selfreparing With.
The content of the invention
The present invention is in view of the shortcomings of the prior art, and it is an object of the present invention to provide a kind of concrete self-repair function additive and its system Preparation Method.
For achieving the above object, the technical solution adopted by the present invention is:
A kind of concrete self-repair function additive, by polybasic ion complexing agent, calcium bicarbonate, water-absorbing resins mixing system Standby to form, each raw materials by weight portion is calculated as:40~60 parts of polybasic ion complexing agent, 40~50 parts of calcium bicarbonate, water imbibition tree 1~5 part of fat.
In such scheme, the molecular structural formula of the polybasic ion complexing agent is:Wherein n For 2 or 3, molecular weight is between 280~430Da.
In such scheme, the polybasic ion complexing agent prepares gained by the following method:By maleic anhydride and go from Sub- water is added in band condensation reflux unit reactor, warming while stirring, after maleic anhydride all dissolving, is warming up to 90~95 DEG C, aqueous hydrogen peroxide solution is added, after isothermal reaction for a period of time, sodium hydroxide solution is added and continues to react, instead After should terminating, product is spray-dried to obtain polybasic ion complexing agent.
In such scheme, each raw materials by weight portion is calculated as in the preparation method:100 parts of maleic anhydride, go from Sub- 100 parts of water, 30 parts of aqueous hydrogen peroxide solution, 100 parts of sodium hydroxide solution;The volumetric concentration of the aqueous hydrogen peroxide solution is 25%~35%, the molar concentration of the sodium hydroxide solution is 0.1mol/L~0.15mol/L.
In such scheme, the time of isothermal reaction is 3h~5h in the preparation method, add sodium hydroxide solution after Continuous reaction 1h~2h.
In such scheme, the water-absorbing resins are that acrylic acid-acrylamide is copolymerized water-absorbing resins, and water absorbent rate is 100~300.
The preparation method of above-mentioned concrete self-repair function additive, comprises the following steps:1) parts by weight of each raw material are pressed Number ratio weighs 40~60 parts of polybasic ion complexing agent, 30~50 parts of calcium bicarbonate, 1~5 part of water-absorbing resins;2) it is more by what is weighed Mechanical mixture in 1~5 part of first 40~60 parts of ionic complexing agent, 30~50 parts of calcium bicarbonate, water-absorbing resins addition mixer 5min, that is, obtain concrete self-repair function additive.
The polybasic ion complexing agent that the present invention synthesizes is formed by 2 or 3 maleic acid anhydride reactants, molecular structural formula For:
(n=2 or 3), between 280~430, the polybasic ion complexing agent has molecular weight Following advantage:1. being linear molecular structure, its complex compound formed with calcium ion migrates speed in the hole of concrete or crack Degree is fast, in micro-pore also easily by;2. containing multiple complexing units, 4~6 calcium ions, complex ion can be complexed simultaneously Quantity is more, and fracture repair ability is strong;3. not containing hydroxyl, the heat evolution velocity unrestraint effect to cement, concrete is not influenceed Setting time.
Beneficial effects of the present invention are as follows:
(1) concrete self-repair function additive of the present invention is by polybasic ion complexing agent, calcium bicarbonate, water imbibition tree Fat is prepared, wherein the polybasic ion complexing agent contains multiple complexing units, can be complexed greater number of calcium ion;It is described Calcium bicarbonate can provide calcium ion and carbanion by hydrolyzing;Polybasic ion complexing agent and the free calcium ions in concrete And calcium ion caused by calcium bicarbonate hydrolysis forms soluble complexes and can moved to water at hole, micro-crack and crack, contains Silicate ion, carbanion (carbonic acid caused by calcium bicarbonate hydrolysis in the soluble complexes and concrete of calcium ion Carbanion caused by radical ion and the carbon dioxide hydrolyses penetrated into the air in concrete) react generation calcium silicates and carbon Sour calcium precipitate come repair damage and crack;The amount of ions that polybasic ion complexing agent can be complexed is more, and calcium in function additive Ion source is sufficient, while using the super-strong moisture absorbing ability of water-absorbing resins, concrete is in moist shape in the long period State, ensure the lasting progress of self-repair procedure, greatly improve function additive to the internal injury of concrete and compared with wide seam Self-reparing capability, the function additive has the advantages that self-reparing capability is strong, and wide seam selfreparing effect is good;
(2) heretofore described polybasic ion complexing agent is linear molecular structure, and its complex compound formed with calcium ion exists Migration velocity is fast in the hole of concrete or crack, also easily by being advantageous to complex compound to concrete fine fisssure in micro-pore The speed migrated at line and crack, have and repair fireballing advantage;
(3) heretofore described polybasic ion complexing agent does not contain hydroxyl, the heat evolution velocity unrestraint effect to cement, no The setting time of concrete can be influenceed, no deferred action, practicality is stronger, has stronger application in concrete selfreparing field Promotional value.
Brief description of the drawings
Fig. 1 is normal concrete (control group) the crack self-healing photo for being not added with self-repair function additive of the present invention, Wherein left figure is incipient crack;Right figure is the crack after standard curing 28d.
Fig. 2 is the self-repairing of concrete cracks photo for adding self-repair function additive of the present invention, and wherein left figure is initial Crack;Right figure is the crack after standard curing 28d.
Embodiment
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention Content is not limited solely to the following examples.
In following examples, the polybasic ion complexing agent is prepared via a method which to obtain:Equipped with condensing reflux 200 parts of deionized waters and 200 parts of maleic anhydrides are added in 1000ml three-necked flasks, make maleic anhydride complete by stirring Portion dissolves, and is heated to 90~95 DEG C, adds the aqueous hydrogen peroxide solution that 30 parts of concentration are 30vt%, isothermal reaction 4h, adds 100 parts of 0.12mol/L sodium hydroxide solutions, 1.5h is reacted, polybasic ion complexing agent then is made by being spray-dried.
Embodiment 1
A kind of concrete self-repair function additive, is prepared via a method which:Weigh 53 parts of polybasic ion complexing agent, carbon Sour hydrogen Ca45 part, acrylic acid-acrylamide 2 parts of water-absorbing resins of copolymerization, add mechanical agitation 5min in mixer, obtain coagulation Native self-repair function additive.
Embodiment 2
A kind of concrete self-repair function additive, is prepared via a method which:Weigh 53 parts of polybasic ion complexing agent, carbon Sour 43 parts of hydrogen calcium, acrylic acid-acrylamide 4 parts of water-absorbing resins of copolymerization, add mechanical agitation 5min in mixer, obtain coagulation Native self-repair function additive.
Cement, rubble, miberal powder, sand, water, water reducer and embodiment 1 are weighed by the quality proportioning of table 1 or prepared by embodiment 2 Concrete self-repair function additive.First rubble, sand, miberal powder, cement and self-repair function additive addition concrete are stirred Mix and 30s is mixed in machine, water reducer and water are then added into stirrer for mixing 120s, that is, be made with crack autogenous healing function Concrete;The concrete self-repair function additive is not added in control group, other conditions are identical.
Self-repair concrete and control group concrete to above-mentioned preparation carry out freezing-thawing damage selfreparing and crack certainly respectively Recovery test, concrete operations are as follows:
(1) self-repair concrete and each part of control group concrete are taken, is separately added into 100mm × 100mm × 100mm's In mould, it is stripped after 1 day, is put into fog room and conserves 28 days, is taken out test specimen and carried out 200 times according to national standard GB/T50082-2009 Frozen-thawed cycled at a slow speed, Frozen-thawed cycled take out test specimen, water seasoning 28 days (watering in every 4 days is once), test Frozen-thawed cycled after terminating The compression strength of test specimen after front and rear and water seasoning.Compression strength is before the self-repair concrete Frozen-thawed cycled of embodiment 1 43.2MPa, compression strength is 35.8MPa after Frozen-thawed cycled, and compression strength is 39.8MPa after water seasoning;The selfreparing of embodiment 2 Compression strength is 42.5MPa before concrete Frozen-thawed cycled, and compression strength is 35.2MPa after Frozen-thawed cycled, resistance to compression after water seasoning Intensity is 40.6MPa;Compression strength is 41.8MPa before control group concrete Frozen-thawed cycled, and compression strength is after Frozen-thawed cycled 31.7MPa, compression strength 32.6MPa after water seasoning.Result of the test shows that normal concrete (control group) produces through Frozen-thawed cycled Raw internal injury can not heal after conserving 28 days, and the concrete for filling self-repair function additive produces through Frozen-thawed cycled Internal injury repaired very well after maintenance (the compression strength recovery rate of embodiment 1 be 92.1%, the pressure resistance of embodiment 2 Recovery rate is spent for 95.5%);Compared with Example 1, water-absorbing resins increase in self-repair function additive used in embodiment 2, The damage self-repairing ability of concrete is further improved.
(2) self-repair concrete and each part of control group concrete are taken, pours into concrete flat slab cracking resistance mould respectively In, vibrate it is floating after blow 4h with fan immediately, keep concrete sample center wind speed be not less than 5m/s, split concrete generation Seam, is measured to incipient crack, is then carried out water seasoning (watering in every 4 days is once), is conserved to 7 days, 14 days, 21 days and 28 It when, fracture width measures respectively.Fracture width measurement result is listed in table 2.As seen from Table 2, the common coagulation of control group The crack self-healing ability of soil is very weak, substantially unchanged with the extension fracture width of curing time, and fills outside self-repair function Add the concrete of agent not only fine to gap (being less than 0.2mm) selfreparing effect, to also being showed compared with wide seam (being more than 0.3mm) Very strong crack autogenous healing ability is gone out;Compared with Example 1, water imbibition tree in self-repair function additive used in embodiment 2 Fat increases, and the crack autogenous healing ability of concrete further enhances.
The proportioning of the concrete of table 1
Fracture width changes during the concrete curing that the embodiment 1,2 of table 2 is prepared with control group
Embodiment 3
A kind of concrete self-repair function additive, is prepared via a method which:Weigh 53 parts of polybasic ion complexing agent, carbon Sour hydrogen Ca45 part, acrylic acid-acrylamide 3 parts of water-absorbing resins of copolymerization, add mechanical agitation 5min in mixer, obtain coagulation Native self-repair function additive.
Embodiment 4
A kind of concrete self-repair function additive, is prepared via a method which:Weigh 57 parts of polybasic ion complexing agent, carbon Sour 40 parts of hydrogen calcium, acrylic acid-acrylamide 3 parts of water-absorbing resins of copolymerization, add mechanical agitation 5min in mixer, obtain coagulation Native self-repair function additive.
Cement, rubble, miberal powder, sand, water, water reducer and embodiment 3 are weighed by the quality proportioning of table 3 or prepared by embodiment 4 Concrete self-repair function additive.First rubble, sand, miberal powder, cement and self-repair function additive addition concrete are stirred Mix and 30s is mixed in machine, water reducer and water are then added into stirrer for mixing 120s, that is, be made with crack autogenous healing function Concrete;The concrete self-repair function additive is not added in control group, other conditions are identical.
Self-repair concrete and control group concrete to above-mentioned preparation carry out freezing-thawing damage selfreparing and crack certainly respectively Recovery test:
(1) self-repair concrete and each part of control group concrete are taken, is separately added into 100mm × 100mm × 100mm's In mould, it is stripped after 1 day, is put into fog room and conserves 28 days, is taken out test specimen and carried out 300 times according to national standard GB/T50082-2009 Frozen-thawed cycled at a slow speed, Frozen-thawed cycled take out test specimen, water seasoning 28 days (watering in every 4 days is once), test Frozen-thawed cycled after terminating The compression strength of test specimen after front and rear and water seasoning.Compression strength is before the self-repair concrete Frozen-thawed cycled of embodiment 3 59.3MPa, compression strength is 50.4MPa after Frozen-thawed cycled, compression strength 55.0MPa after water seasoning;Embodiment 4 reviews one's lessons by oneself compound Compression strength is 61.1MPa before coagulating native Frozen-thawed cycled, and compression strength is 51.2MPa after Frozen-thawed cycled, pressure resistance after water seasoning Spend for 57.6MPa;Compression strength is 57.5MPa before contrast groups concrete Frozen-thawed cycled, and compression strength is after Frozen-thawed cycled 42.7MPa, compression strength 44.2MPa after water seasoning.Test result again shows that:Normal concrete (control group) follows through freeze thawing Internal injury caused by ring does not heal substantially after conserving 28 days, and the concrete for filling self-repair function additive follows through freeze thawing Internal injury is repaired very well after maintenance caused by ring;Compared with Example 3, used in embodiment 4 outside self-repair function Polybasic ion complexing agent content in agent is added to increase, the internal injury self-reparing capability of concrete is further improved.
(2) self-repair concrete and each part of control group concrete are taken, pours into concrete flat slab cracking resistance mould respectively In, vibrate it is floating after blow 4h with fan immediately, keep concrete sample center wind speed be not less than 5m/s, split concrete generation Seam, is measured to incipient crack, is then carried out water seasoning (watering in every 4 days is once), is conserved to 7 days, 14 days, 21 days and 28 It when, fracture width measures respectively.Fracture width measurement result is listed in table 4.From table 4, the common coagulation of control group Native fracture width is substantially unchanged, and embodiment 3 and the distress in concrete reparation mixed with function additive prepared by embodiment 4 Ability is significantly improved.Compared with Example 3, polybasic ion complexing agent contains in self-repair function additive used in embodiment 4 Amount increases, and the crack autogenous healing ability of concrete is further enhanced, and also has to more than 0.7mm crack and reviews one's lessons by oneself reactivation Power.
The proportioning of the concrete of table 3
Fracture width changes during the concrete curing that the embodiment 3,4 of table 4 is prepared with control group
Embodiment 5
A kind of concrete self-repair function additive, is prepared via a method which:Weigh 40 parts of polybasic ion complexing agent, carbon Sour 50 parts of hydrogen calcium, acrylic acid-acrylamide 5 parts of water-absorbing resins of copolymerization;By the polybasic ion complexing agent weighed, calcium bicarbonate, Water-absorbing resins add mechanical mixture 5min in mixer, that is, obtain concrete self-repair function additive.
Embodiment 6
A kind of concrete self-repair function additive, is prepared via a method which:Weigh 60 parts of polybasic ion complexing agent, carbon Sour 30 parts of hydrogen calcium, acrylic acid-acrylamide 1 part of water-absorbing resins of copolymerization;By the polybasic ion complexing agent weighed, calcium bicarbonate, Water-absorbing resins add mechanical mixture 5min in mixer, that is, obtain concrete self-repair function additive.
Obviously, above-described embodiment is only intended to clearly illustrate made example, and is not the limitation to embodiment.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change or change therefore amplified Move within still in the protection domain of the invention.

Claims (7)

1. a kind of concrete self-repair function additive, it is characterised in that by polybasic ion complexing agent, calcium bicarbonate, water imbibition Resin, which is mixed with, to be formed, and each raw materials by weight portion is calculated as:40~60 parts of polybasic ion complexing agent, calcium bicarbonate 40~50 Part, 1~5 part of water-absorbing resins.
2. concrete self-repair function additive according to claim 1, it is characterised in that the polybasic ion complexing agent Molecular structural formula be:
Wherein n is 2 or 3, and molecular weight is between 280~430Da.
3. concrete self-repair function additive according to claim 1, it is characterised in that the polybasic ion complexing agent Gained is prepared by the following method:Maleic anhydride and deionized water are added in band condensation reflux unit reactor, while stirring Side heating is mixed, after maleic anhydride all dissolving, 90~95 DEG C is warming up to, adds aqueous hydrogen peroxide solution, isothermal reaction After a period of time, add sodium hydroxide solution and continue to react, after reaction terminates, product is spray-dried to obtain polybasic ion network Mixture.
4. concrete self-repair function additive according to claim 3, it is characterised in that each original in the preparation method Material is calculated by weight as:100 parts of maleic anhydride, 100 parts of deionized water, 30 parts of aqueous hydrogen peroxide solution, sodium hydroxide 100 parts of solution;The volumetric concentration of the aqueous hydrogen peroxide solution is 25%~35%, the molar concentration of the sodium hydroxide solution For 0.1mol/L~0.15mol/L.
5. concrete self-repair function additive according to claim 3, it is characterised in that constant temperature in the preparation method The time of reaction is 3h~5h, adds sodium hydroxide solution and continues to react 1h~2h.
6. concrete self-repair function additive according to claim 1, it is characterised in that the water-absorbing resins are third Olefin(e) acid-acrylamide copolymerization water-absorbing resins, water absorbent rate is 100~300.
7. the preparation method of any concrete self-repair function additive of claim 1~6, it is characterised in that including such as Lower step:1) 40~60 parts of polybasic ion complexing agent, 30~50 parts of calcium bicarbonate, water suction are weighed by the ratio of weight and number of each raw material 1~5 part of resin of property;2) 30~50 parts of 40~60 parts of polybasic ion complexing agent, calcium bicarbonate, the water-absorbing resins 1~5 that will be weighed Mechanical mixture 5min in part addition mixer, that is, obtain concrete self-repair function additive.
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CN110316995A (en) * 2019-04-25 2019-10-11 武汉理工大学 A kind of preparation method and application of the polyacrylamide microgel particle for cement-based material selfreparing
CN112585105A (en) * 2018-08-23 2021-03-30 国立大学法人东海国立大学机构 Structural material, structural object, method for producing structural object, sealing composition, and ion-supplying material
CN113912318A (en) * 2021-12-01 2022-01-11 深圳大学 Composite concrete self-repairing material, application thereof and preparation method of self-repairing concrete
CN114230273A (en) * 2021-12-11 2022-03-25 河南建筑材料研究设计院有限责任公司 Crack self-repairing concrete and preparation method thereof
CN114956644A (en) * 2022-05-24 2022-08-30 中冶武汉冶金建筑研究院有限公司 Concrete crack self-repairing material and preparation method thereof
CN116063020A (en) * 2022-12-05 2023-05-05 北京市高强混凝土有限责任公司 Restorative and method for restoring strength loss of pumped concrete

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CN105347718A (en) * 2015-10-08 2016-02-24 南京瑞迪高新技术有限公司 Viscosity-control type polycarboxylate superplasticizer for lean cemented concrete and preparation method of viscosity-control type polycarboxylate superplasticizer
CN105110679A (en) * 2015-10-15 2015-12-02 上海惠邦特种涂料有限公司 Additive for improving self-repairing property of concrete cracks
CN106082893A (en) * 2016-06-29 2016-11-09 浙江工业大学 Seepage selfreparing waterproof mortar and preparation method thereof

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CN112585105A (en) * 2018-08-23 2021-03-30 国立大学法人东海国立大学机构 Structural material, structural object, method for producing structural object, sealing composition, and ion-supplying material
CN110316995A (en) * 2019-04-25 2019-10-11 武汉理工大学 A kind of preparation method and application of the polyacrylamide microgel particle for cement-based material selfreparing
CN110316995B (en) * 2019-04-25 2021-09-07 武汉理工大学 Preparation method and application of polyacrylamide gel particles for cement-based material self-repair
CN113912318A (en) * 2021-12-01 2022-01-11 深圳大学 Composite concrete self-repairing material, application thereof and preparation method of self-repairing concrete
CN114230273A (en) * 2021-12-11 2022-03-25 河南建筑材料研究设计院有限责任公司 Crack self-repairing concrete and preparation method thereof
CN114230273B (en) * 2021-12-11 2023-05-23 河南建筑材料研究设计院有限责任公司 Crack self-repairing type concrete and preparation method thereof
CN114956644A (en) * 2022-05-24 2022-08-30 中冶武汉冶金建筑研究院有限公司 Concrete crack self-repairing material and preparation method thereof
CN114956644B (en) * 2022-05-24 2022-12-02 中冶武汉冶金建筑研究院有限公司 Concrete crack self-repairing material and preparation method thereof
CN116063020A (en) * 2022-12-05 2023-05-05 北京市高强混凝土有限责任公司 Restorative and method for restoring strength loss of pumped concrete

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