CN101624271A - Underwater epoxy concrete, mortar additive and preparation method thereof - Google Patents
Underwater epoxy concrete, mortar additive and preparation method thereof Download PDFInfo
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- CN101624271A CN101624271A CN200910017156A CN200910017156A CN101624271A CN 101624271 A CN101624271 A CN 101624271A CN 200910017156 A CN200910017156 A CN 200910017156A CN 200910017156 A CN200910017156 A CN 200910017156A CN 101624271 A CN101624271 A CN 101624271A
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Abstract
The invention relates to an underwater epoxy concrete, mortar additive and a preparation method thereof. The additive comprises component A and component B which comprise the ingredients by weight percent: 40-45% of epoxy resin E-51, 16.5-21% of epoxy resin E-44, 9-13% of reactive diluent, 6.0-7.5% of toughening agent, 1-2% of coupling agent, 20-24% of curing agent T-31; wherein the curing agent T-31 belongs to the component B, and the rest ingredients are component A. The method comprises: the epoxy resin E-51 and the epoxy resin E-44 are heated to be about 40 DEG C and then evenly stirred; Kocsis toughening agent QS-BE is added; after that, the diluent and the coupling agent are added, and the mixture is evenly dispersed by a high-speed disperser, so that the component A can be obtained; the component A and the curing agent T-31 are mixed together and evenly stirred, so that the underwater epoxy concrete, mortar additive can be obtained. The additive is simple in preparation technique, and the prepared mixture has no phenomena of segregation and dispersion, has the functions of self-leveling and self-compaction and needs no concrete vibrating when being cast in the water; after being cured, the additive has good splicing performance with the original concrete; the prepared mixture has strong acid and alkali corrosion resistance after being cured in the water; therefore, the invention can be applied to underwater casting of concrete structures such as bridge piers, dams and bottom plates of reservoir power stations and the like as well as underwater thin-layer repair.
Description
Technical field:
The present invention relates to a kind of epoxy concrete, grout additive and preparation method thereof, the particularly a kind of epoxy concrete that can directly build under water, grout additive and preparation method thereof.The underwater casting and the underwater thin-layer that can be applicable to concrete structure are repaired.
Background technology:
Concrete structures such as the dam in bridge pier, reservoir power station, base plate are subjected to washing away of high velocity flow for a long time, can produce serious breakage, have potential safety hazard, need in time carry out reinforcing.But it is impossible repairing under drying regime by traditional method these structures, must construct under water.In the process that common concrete stirring thing is built in water, the cement in the mixture can be washed by water and the part loss, and concrete curing thing intensity is obviously reduced.At present, Chinese patent CN1073669A discloses a kind of dispersion resistant additive of underwater concrete, be to add flocculation agent under water at normal concrete, though can alleviate the loss of concrete mix in water, but it is low with the bonding strength of old concrete that it builds the back, so it is fit to dell, large-area filling up under water, is not suitable for the repairing of concrete membrane breakage.
Summary of the invention:
The objective of the invention is to overcome the shortcoming of prior art, stirring thing at present concrete is subject to wash away in the construction process under water and runs off, cohesive strength is low, the acid-alkali-corrosive-resisting poor performance, be difficult to carry out the problems such as repairing of concrete membrane breakage, additive of a kind of place of water concrete batching, mortar and preparation method thereof is provided.
In order to realize the foregoing invention purpose, epoxy concrete of the present invention, grout additive, be made up of two kinds of components of A, B, the A component is to have added the Resins, epoxy base fluid of various auxiliary agents, and the B component is a special curing agent under water, its weight percent consists of: the Resins, epoxy E-51 of 40-45%, the epoxy resin E-44 of 16.5-21%, the reactive thinner of 9-13%, the epoxy resin toughener of 6.0-7.5%, the coupling agent of 1-2%, the T-31 solidifying agent of 20-24%.Wherein, the T-31 solidifying agent is the B component, and surplus is the A component.
Adopted bisphenol A epoxide resin among the present invention: Resins, epoxy E-51 and epoxy resin E-44, the two is mixed in certain proportion.Contain polarity high and the not aliphatic alkyl and the ehter bond of facile hydrolysis in the Resins, epoxy molecule, make it under dampness, higher sticking power be arranged, and corrosion resistance nature is also high various grounds.Bisphenol A type epoxy resin is the alternately arrangement of hydrocarbon chain of inflexible benzene nucleus and flexibility because of its structure again in addition, thereby gives cured article better physical mechanical property.Resins, epoxy E-51 molecular resin amount is low, and viscosity is little, is beneficial to underwater casting.Epoxy resin E-44 viscosity height, but good with the bonding force of ground, so adopt two kinds of resins to be used among the present invention.
The thinner that adopts among the present invention is the mixing that contains the epoxy propane butyl ether and the polyglycidyl ether of epoxy group(ing).Because the viscosity of Resins, epoxy is very high, 25 ℃ reach 10-14Pa.S, and winter is higher, if do not add thinner, fit in concrete or mortar and can't construct under water, in use will add the viscosity that a certain amount of thinner reduces epoxy-resin systems for this reason, improve processing performance.The mixture that the reactive thinner of the 9-13% that adds weight ratio among the present invention and be is made up of the ethylene glycol diglycidylether of the butylglycidyl ether of 6-8% (weight ratio) and 3-5% (weight ratio).The reactive thinner ethylene glycol diglycidylether can not only dilute Resins, epoxy, and can participate in the curing reaction of Resins, epoxy; And the performance of cured article is not had too big influence, also can play toughening effect simultaneously.
The epoxy resin roughening properties-correcting agent that adopts among the present invention is strange scholar's toughner QS-BE.The epoxy resin cured product performance of non-modified is more crisp, when bearing internal stress or external stress, can produce defective or crack.After adding strange scholar QS-BE toughner, at the inner heterogenetic island structure that forms of cured article, cured article toughness improves, and impact resistance strengthens.
The coupling agent that adopts among the present invention is γ-glycidyl propyl trimethoxy silicane (KH-560) or gamma-amino propyl group three TMOS (KH-550), can improve the bonding force between Resins, epoxy and the adherend, improve the mechanical property of epoxy resin cured product.
The solidifying agent that adopts among the present invention is the pnenolic aldehyde amine hardener that can be used under water, though this solidifying agent at low temperatures also can with Resins, epoxy generation curing reaction, overcome the defective that some material can't winter construction.
The preparation method of epoxy concrete of the present invention, grout additive, operate according to following steps:
The preparation of component A: take by weighing the Resins, epoxy E-51 of 40-45% and the epoxy resin E-44 of 16.5-21%, mix, be heated to about 40 ℃, after stirring, add the strange scholar's toughner of QS-BE of 6.0-7.5%, be deployed into the modified resin thing; Add the butylglycidyl ether 501 of 9-13% and the mixture of ethylene glycol diglycidylether, coupling agent KH-560 or the KH-550 of 1-2%, be uniformly dispersed with high speed dispersor, weigh, packing makes component A, and above-mentioned each material proportion all is weight percentage.
B component T-31 solidifying agent is directly weighed packing.
Before the use, be that the B component of 20-24% is mixed, stir, promptly make underwater epoxy concrete, grout additive component A and weight percent.
Simple with this additive preparation technology, the mixture of preparation can overcome segregation when building in normal concrete, the mortar water, sclerosis back and the not strong defective of old concrete bonding force, make do not emanate when mixture is built in water, do not disperse, from levelling, self-compacting, need not vibrate, and can extrude former moisture of building the surface, it is bonding good to solidify back and old concrete; Mortar with this additive preparation can carry out several centimetres of thin layers repairings under water in addition.Performance identical with land construction almost behind the concrete curing.And after solidifying, concrete, the mortar of this additive preparation have very strong antiacid caustic corrosion ability in water.The underwater casting and the underwater thin-layer that can be used for the concrete structures such as dam, base plate in bridge pier, reservoir power station are repaired.
Embodiment:
The present invention will be further described below in conjunction with specific embodiment.
Embodiment 1: take by weighing following each component according to weight percent:
Resins, epoxy E-51 45.0%
Epoxy resin E-44 16.8%
Butylglycidyl ether 501 6.2%
Ethylene glycol diglycidylether 4.6%
Strange scholar's toughner QS-BE 6.2%
Coupling agent KH-560 1.2%
Solidifying agent T-31 20.0%
With weight percent is that 45% Resins, epoxy E-51 and weight percent are that 16.8% epoxy resin E-44 mixes, and is heated to about 40 ℃, after stirring, adds weight percent and be 6.2% the strange scholar's toughner of QS-BE, is deployed into the modified resin thing; Add weight percent and be 6.2% reactive thinner butylglycidyl ether 501 and weight percent and be 4.6% ethylene glycol diglycidylether, weight percent and be 1.2% coupling agent KH-560, be uniformly dispersed with high speed dispersor; Then, with weight percent be that 20% T-31 solidifying agent stirs, promptly obtain underwater epoxy concrete, grout additive.
This additive and stone, sand, cement are made into concrete stirring thing by following weight proportion: epoxy concrete, grout additive: stone: sand: cement=1: 2.3: 2.0: 0.6, this concrete is stirred thing joined mandatory concrete mixer mix 3-5 minute, carry out underwater casting, performance is as follows:
In the water from levelling, self-compacting, presetting period＜5 hour, final setting time＜24 hour; 7 days ultimate compression strength 〉=40MPa; 28 days ultimate compression strength 〉=55MPa; 28 days bonding cleavage strength 〉=2.5MPa with old concrete; Wear-resistant rate: 0.185g/h.cm
2Dash mill intensity: 5.405h/ (g/cm
2).
Embodiment 2: take by weighing following each component according to weight percent:
Resins, epoxy E-51 40.0%
Epoxy resin E-44 20.0%
Butylglycidyl ether 501 6.5%
Ethylene glycol diglycidylether 3.1%
Strange scholar's toughner QS-BE 7.4%
Coupling agent KH-550 1.0%
Solidifying agent T-31 22.0%
With weight percent is that 40% Resins, epoxy E-51 and weight percent are that 20% epoxy resin E-44 mixes, and is heated to about 40 ℃, after stirring, adds weight percent and be 7.4% the strange scholar's toughner of QS-BE, is deployed into the modified resin thing; Adding weight percent and be 5.5% reactive thinner butylglycidyl ether 501 and weight percent is that 3.1% ethylene glycol diglycidylether, weight percent are 1.0 % coupling agent KH-550, is uniformly dispersed with high speed dispersor; Then, with weight percent be that 22% T-31 solidifying agent stirs, promptly obtain underwater epoxy concrete, grout additive.
Concrete coarse aggregate is changed to NFJ wear resistant and rustproof alloy aggregate, and fine aggregate is changed to silicon carbide.Mixing ratio by weight is: epoxy concrete, grout additive: NFJ aggregate: silicon carbide: cement=1: 4.1: 2.25: 0.41, said components was joined in the mandatory concrete mixer mix 3-5 minute, and carry out underwater casting, performance is as follows:
In the water from levelling, self-compacting.Presetting period＜4.5 hour, final setting time＜22 hour; 7 days ultimate compression strength 〉=45MPa, 28 days ultimate compression strength 〉=60MPa; Bonding cleavage strength 〉=2.5MPa with old concrete; Wear-resistant rate: 0.161g/h.cm
2Dash mill intensity: 6.211h/ (g/cm
2), changing wear-resistant aggregate into, hardening thing can withstand long term exposure contains the impact of sand current.
Embodiment 3: take by weighing following each component according to weight percent:
Resins, epoxy E-51 42.1%
Epoxy resin E-44 17.1%
Butylglycidyl ether 501 5.8%
Ethylene glycol diglycidylether 3.5%
Strange scholar's toughner QS-BE 6.0%
Coupling agent KH-560 1.5%
Solidifying agent T-31 24.0%
With weight percent is that 42.1% Resins, epoxy E-51 and weight percent are that 17.1% epoxy resin E-44 mixes, and is heated to about 40 ℃, after stirring, adds weight percent and be 6.0% the strange scholar's toughner of QS-BE, is deployed into the modified resin thing; Adding weight percent and be 5.8% reactive thinner butylglycidyl ether 501 and weight percent is that 3.5% ethylene glycol diglycidylether, weight percent are 1.5% coupling agent KH-560, is uniformly dispersed with high speed dispersor; Then, with weight percent be that 24.0% T-31 solidifying agent stirs, promptly obtain underwater epoxy concrete, grout additive.
This additive and sand, cement are prepared epoxy mortar, the preparation weight ratio is: epoxy concrete, grout additive: sand: cement=1: 2.25: 0.75, add in the stirrer and stirred 3-5 minute, be mixed with epoxy mortar and carry out underwater casting, can carry out several centimetres of thin layers and repair.Performance is as follows:
Presetting period＜4 hour, final setting time＜20 hour; 7 days ultimate compression strength 〉=40MPa, 28 days ultimate compression strength 〉=50MPa; Bonding cleavage strength 〉=2.6MPa with old concrete.
Claims (5)
1, a kind of underwater epoxy concrete, grout additive, it is characterized in that: this additive is made up of two kinds of components of A, B, the A component is to have added the Resins, epoxy base fluid of auxiliary agent, the B component is a special curing agent under water, and its weight percent consists of: the Resins, epoxy E-51 of 40-45%, the epoxy resin E-44 of 16.5-21%, the reactive thinner of 9-13%, the epoxy resin toughener of 6.0-7.5%, the coupling agent of 1-2%, the T-31 solidifying agent of 20-24%.Wherein, the T-31 solidifying agent is the B component, and surplus is the A component.
2, a kind of underwater epoxy concrete according to claim 1, grout additive is characterized in that: the reactive thinner of employing is the butylglycidyl ether 501 of 6-8% and the mixture that weight ratio is formed for the 3-5% ethylene glycol diglycidylether by weight ratio.
3, a kind of underwater epoxy concrete according to claim 1, grout additive is characterized in that: the epoxy resin toughener of employing is strange scholar's toughner QS-BE.
4, a kind of underwater epoxy concrete according to claim 1, grout additive is characterized in that: the coupling agent of employing is γ-glycidyl propyl trimethoxy silicane or gamma-amino propyl group three hexyloxy silane.
5, the preparation method of a kind of underwater epoxy concrete, grout additive, it is characterized in that: preparation component A: take by weighing the E-51 Resins, epoxy of 40-45% and the epoxy resin E-44 of 16.5-21%, mix, be heated to 40 ℃, after stirring, add the strange scholar's toughner of QS-BE of 6.0-7.5%, be deployed into the modified resin thing; Add the butylglycidyl ether 501 of 9-13% and the mixture of ethylene glycol diglycidylether, coupling agent γ-glycidyl propyl trimethoxy silicane or the gamma-amino propyl group three hexyloxy silane of 1-2%, be uniformly dispersed with high speed dispersor, weigh, packing, above-mentioned each material proportion all is weight percentage; B component T-31 solidifying agent is directly weighed packing; Before the use, be that the B component of 20-24% is mixed, stir, promptly make underwater epoxy concrete, grout additive component A and weight percent.
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| CN200910017156A CN101624271A (en) | 2009-07-16 | 2009-07-16 | Underwater epoxy concrete, mortar additive and preparation method thereof |
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| CN200910017156A CN101624271A (en) | 2009-07-16 | 2009-07-16 | Underwater epoxy concrete, mortar additive and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584109A (en) * | 2012-01-13 | 2012-07-18 | 雷运波 | Epoxy resin concrete material and microwave-coagulation preparation method thereof |
| CN103496887A (en) * | 2013-09-13 | 2014-01-08 | 天津大学 | Epoxy resin zirconium tungstate concrete and preparation method thereof |
| CN103819144A (en) * | 2013-12-30 | 2014-05-28 | 天津科技大学 | Preparation method of epoxy mortar for filling ocean oil and gas pipeline |
| CN108559431A (en) * | 2018-04-26 | 2018-09-21 | 山西省交通科学研究院 | A kind of linking new and old concrete interface adhesive and preparation method thereof and construction technology |
| CN108676457A (en) * | 2018-04-27 | 2018-10-19 | 青岛太平洋水下科技工程有限公司 | Underwater concrete tough epoxy anticorrosive paint and preparation method thereof |
| CN109679553A (en) * | 2018-12-20 | 2019-04-26 | 四川蜀羊防水材料有限公司 | A kind of graphene epoxy waterproof anti-corrosion encapsulating slurry and preparation method thereof |
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2009
- 2009-07-16 CN CN200910017156A patent/CN101624271A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584109A (en) * | 2012-01-13 | 2012-07-18 | 雷运波 | Epoxy resin concrete material and microwave-coagulation preparation method thereof |
| CN103496887A (en) * | 2013-09-13 | 2014-01-08 | 天津大学 | Epoxy resin zirconium tungstate concrete and preparation method thereof |
| CN103819144A (en) * | 2013-12-30 | 2014-05-28 | 天津科技大学 | Preparation method of epoxy mortar for filling ocean oil and gas pipeline |
| CN108559431A (en) * | 2018-04-26 | 2018-09-21 | 山西省交通科学研究院 | A kind of linking new and old concrete interface adhesive and preparation method thereof and construction technology |
| CN108559431B (en) * | 2018-04-26 | 2021-03-16 | 山西省交通科技研发有限公司 | Interface adhesive for bonding new and old concrete and preparation method and construction process thereof |
| CN108676457A (en) * | 2018-04-27 | 2018-10-19 | 青岛太平洋水下科技工程有限公司 | Underwater concrete tough epoxy anticorrosive paint and preparation method thereof |
| CN109679553A (en) * | 2018-12-20 | 2019-04-26 | 四川蜀羊防水材料有限公司 | A kind of graphene epoxy waterproof anti-corrosion encapsulating slurry and preparation method thereof |
| CN109679553B (en) * | 2018-12-20 | 2021-11-09 | 四川蜀羊防水材料有限公司 | Graphene epoxy waterproof anticorrosion encapsulation slurry and preparation method thereof |
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Open date: 20100113 |