CN103408273A - Permeable-adhesive type cement-based sealing and repairing agent and preparation method thereof - Google Patents

Permeable-adhesive type cement-based sealing and repairing agent and preparation method thereof Download PDF

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Publication number
CN103408273A
CN103408273A CN2013103856207A CN201310385620A CN103408273A CN 103408273 A CN103408273 A CN 103408273A CN 2013103856207 A CN2013103856207 A CN 2013103856207A CN 201310385620 A CN201310385620 A CN 201310385620A CN 103408273 A CN103408273 A CN 103408273A
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China
Prior art keywords
sealing
cement
agent
type cement
renovation agent
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CN2013103856207A
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Chinese (zh)
Inventor
张荣连
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NANJING HULIAN NEW BUILDING MATERIAL CO Ltd
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NANJING HULIAN NEW BUILDING MATERIAL CO Ltd
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Priority to CN2013103856207A priority Critical patent/CN103408273A/en
Publication of CN103408273A publication Critical patent/CN103408273A/en
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Abstract

The invention relates to the technical field of building materials and discloses a permeable-adhesive type cement-based sealing and repairing agent and a preparation method thereof. The permeable-adhesive type cement-based sealing and repairing agent is qualitatively and quantitatively prepared from cement, an ultrafine powder filler, fine aggregate, latex powder, cellulose ether, an early strength agent, a water reducing agent, an expanding agent, a retarder, a defoaming agent and an anionic surfactant. When the permeable-adhesive type cement-based sealing and repairing agent is used, water is added to the agent in a ratio of 0.16-0.22 and then the mixture is stirred uniformly. The permeable-adhesive type cement-based sealing and repairing agent has the advantages that fluidity is not reduced in 30 minutes, tensile adhesive strength with C30-grade concrete in 7 days is higher than 2.0MPa, the permeable-adhesive type cement-based sealing and repairing agent can be used at the temperature ranging from -5 DEG C to 45 DEG C by virtue of a reasonable ratio design, and the permeable-adhesive type cement-based sealing and repairing agent has relatively good tensile adhesive property in soaking, freeze thawing and thermal ageing complex environments.

Description

A kind of sticky type cement based sealing renovation agent and preparation method thereof that oozes
Technical field
Building material technical field of the present invention, related in particular to a kind of sticky type cement based of oozing of using for crack repairing and sealed renovation agent and preparation method thereof.
Background technology
Concrete structures can along with the time and environment constantly aging, the great number of issues such as gradually derive breakage, carbonization, rot, renovation agent is for the repairing of concrete structures defect and enhancing, mainly cement, aggregate, chemical additive, consists of.On the one hand, the patching material that the existing epoxy resin concrete renovation agent of China is organic system, have working temperature and use the restriction in season, and construction is complicated, the deficiency such as performance under hot environment; On the other hand, existing cement based healant product is poor at swelling property, adhesive property, has simultaneously the deficiencies such as mobility is little, weathering resistance is poor, later stage volume drying shrinkage.Therefore, the selection of the damage patching material of concrete structures, epoxies healant and existing cement healant have performance deficiency.For concrete damaged recovery technique, a kind of comprehensive renovation agent with stable performance under good fluidity, complicated weather, early stage (24h) microdilatancy and later stage (28d) volume stability, resistance to chemical attack, freeze-thaw-, anti-immersion need to be arranged.In sum, domestic existing concrete renovation agent exists the problems such as weathering resistance is poor, later stage volumetric shrinkage, poor fluidity.
Summary of the invention
The object of the invention is to provide a kind of sticky type cement based sealing renovation agent that oozes, and can-5 ~ 45 ℃ of temperature ranges in, construct, and possess the adhesive property of the penetrant crystalline of holing, and degree of mobilization is unattenuated in 30min, has drying shrinkage effect not of early stage microdilatancy later stage.
For achieving the above object, complete skill scheme of the present invention: a kind of oozing glued type cement based sealing renovation agent, and it is characterized in that: raw material forms by weight percentage, comprises following component:
Cement 40% ~ 55%;
Ultrafine powder filler 1% ~ 5%;
Fine aggregate 40% ~ 50%;
Latex powder 0.5% ~ 3.0%;
Ether of cellulose 0.03% ~ 0.1%;
Hardening accelerator 0.1% ~ 0.5%;
Water reducer 0.2% ~ 1.0%;
Swelling agent 2% ~ 4%;
Retardant 0.03% ~ 0.5%;
Defoamer 0.05% ~ 0.2%;
Anion surfactant 0% ~ 0.02%.
Preferably, described cement is that one or more in aluminosulfate cement, general purpose portland cement are composited.
Preferably, described ultrafine powder filler is for being not less than 1000m for specific surface area 2One or more in the flyash of/Kg, silica flour, breeze, Paris white.
Preferably, latex powder is that second-order transition temperature is not less than+redispersable latex powder of 5 ℃.
Preferably, described ether of cellulose is the hydroxypropyl methyl cellulose ether of 1000mPas.
Preferably, described swelling agent is one or more in high alumina, anhydrite, calcium oxide, alumina.
Preferably, described hardening accelerator is one or more in vitriol, nitrate and nitrite, carbonate, trolamine and derivative thereof, ethylene glycol, formate etc.
Preferably, described retardant is a kind of in polyol, citric acid and salt thereof, tartrate and salt thereof, taurine and salt thereof, phenylformic acid and salt thereof, Whitfield's ointment and salt thereof etc.
The invention also discloses a kind of preparation method of oozing sticky type cement based sealing renovation agent, comprise the following steps:
(1) after each chemical additive (except defoamer) vacuum-drying is less than to 1.0% to water ratio, cross 0.600 ㎜ square hole sieve, take institute's expense stand-by;
(2) by trace mineral supplements such as ether of cellulose, hardening accelerator, water reducer, swelling agent, retardant, defoamer, anion surfactants, take ultrafine powder filler, latex powder and three kinds of pulvis of swelling agent is thinner, in the container of sealing, carry out spiral forward and reverse being stirred to evenly, rotating speed 90 ~ 360r/min, obtain the uniform reagent component mixture of mix;
(3) cement, fine aggregate, the reagent component mixture after measuring poured reactor into, through after promoting and stirring and disperse the link such as stirring, makes the sticky type cement based sealing renovation agent that oozes of the present invention.
Principle of work of the present invention:
(1) the wide in range temperature technology of charge compensation.By the acting in conjunction of anion surfactant and hardening accelerator, retardant, when low temperature, tensio-active agent and hardening accelerator acting in conjunction, promote nucleus growth, accelerates the aquation process of gelling material, by the electrocharge effect of free-water, reduces the freezing point of mixing water; When high temperature, tensio-active agent and retardant agent acting in conjunction, the surface tension of reduction free-water, promote the dissolving of retardant in free-water, extends time of coagulation;
(2) ultrafine powder-rubber powder nanometer infiltration technology.The first, active nano micron-class superfine powder granule particle size interval is 10nm ~ 30 μ m, is subjected to sticky interface along with the aquation slurry has infiltrated matrix, is filled in the space that is subjected to sticky matrix, vestibule, capillary channel, has formed the different nanocone of volume one by one; The second, active nano SiO 2With after the latex powder mix, generating interactive mode, mix to bonding chelating body, make to be subjected to sticky matrix and renovation agent bonding more to be compacted.
Apply technical scheme of the present invention, have following technique effect:
(1) this cement based stone material renovation agent can normal use under (5 ~ 45) ℃;
(2) in 30min, degree of mobilization does not reduce;
(3) early stage (24h) microdilatancy, later stage (28d) volume stability;
(4) realized C30, C40, the concrete perviousness bonding of C60 level, depth of penetration 0.5 ~ 1.0 ㎜.
Embodiment
The invention will be further described below in conjunction with embodiment:
Embodiment 1:
(1) each raw material (except cement, fine aggregate, defoamer) negative pressure drying to its water ratio is less than to 1.0%, crosses 0.600 ㎜ square hole sieve, take institute's expense stand-by;
(2) by (1) gained raw material, cement, fine aggregate, defoamer by weight percentage, by following proportioning:
Aluminosulfate cement 45.0%,
Ultrafine powder filler 3.01%,
Fine aggregate 47.0%,
Latex powder 2.0%,
Ether of cellulose 0.08%,
Hardening accelerator 0.1%,
Swelling agent 2.4%,
Retardant 0.3%,
Defoamer 0.1%;
(3) by trace mineral supplements such as ether of cellulose, hardening accelerator, water reducer, swelling agent, retardant, defoamer, anion surfactants, take ultrafine powder filler, latex powder and three kinds of pulvis of swelling agent is thinner, in the container of sealing, carry out spiral forward and reverse being stirred to evenly, rotating speed 90 ~ 360r/min, obtain the uniform reagent component mixture of mix;
(4) pour aluminosulfate cement, fine aggregate, reagent component mixture into reactor, after promote stirring and dispersing the link such as stirring, make the sticky type cement based sealing of oozing of the present embodiment renovation agent.
The sticky type cement based of oozing of the present embodiment seals renovation agent, presses water rate 0.18, blunge aftershaping, form removal after 12 hours, water curing to 7 day; The present embodiment ooze sticky type cement based sealing renovation agent, initial flow degree 320 ㎜, 30min degree of mobilization 325 ㎜, water curing after 7 days with C30 Concrete Bond Strength 2.4MPa, water curing is ultimate compression strength 55MPa after 7 days.
Embodiment 2:
(1) each raw material (except cement, fine aggregate, defoamer) negative pressure drying to its water ratio is less than to 1.0%, crosses 0.600 ㎜ square hole sieve, take institute's expense stand-by;
(2) by (1) gained raw material, cement, fine aggregate, defoamer by weight percentage, by following proportioning:
Aluminosulfate cement 40.0%,
Silicate cement 2.0%,
Ultrafine powder filler 4.0%,
Fine aggregate 48.0%,
Latex powder 2.5%,
Ether of cellulose 0.1%,
Hardening accelerator 0.1%,
Swelling agent 3.0%,
Retardant 0.2%,
Defoamer 0.1%;
(3) using ether of cellulose, hardening accelerator, water reducer, swelling agent, retardant, defoamer as additive, take ultrafine powder filler, latex powder and three kinds of pulvis of swelling agent is thinner, in the container of sealing, carry out spiral forward and reverse being stirred to evenly, rotating speed 90 ~ 360r/min, obtain the uniform reagent component mixture of mix;
(4) pour aluminosulfate cement, silicate cement, fine aggregate, reagent component mixture into reactor, after promote stirring and dispersing the link such as stirring, make the sticky type cement based sealing of oozing of the present embodiment renovation agent.
The sticky type cement based of oozing of the present embodiment seals renovation agent, presses water rate 0.20, blunge aftershaping, form removal after 12 hours, water curing to 7 day; The present embodiment ooze sticky type cement based sealing renovation agent, initial flow degree 330 ㎜, 30min degree of mobilization 340 ㎜, water curing after 7 days with C30 Concrete Bond Strength 2.2MPa, water curing is ultimate compression strength 54MPa after 7 days.
Embodiment 3:
(1) each raw material (except cement, fine aggregate, defoamer) negative pressure drying to its water ratio is less than to 1.0%, crosses 0.600 ㎜ square hole sieve, take institute's expense stand-by;
(2) by (1) gained raw material, cement, fine aggregate, defoamer by weight percentage, by following proportioning:
Aluminosulfate cement 50.0%,
Silicate cement 2.5%,
Ultrafine powder filler 2.44%,
Fine aggregate 41.0%,
Latex powder 1.5%,
Ether of cellulose 0.05%,
Hardening accelerator 0.1%,
Swelling agent 2.0%,
Retardant 0.3%,
Defoamer 0.1%,
Anion surfactant 0.01%;
(3) by trace mineral supplements such as ether of cellulose, hardening accelerator, water reducer, swelling agent, retardant, defoamer, anion surfactants, take ultrafine powder filler, latex powder and three kinds of pulvis of swelling agent is thinner, in the container of sealing, carry out spiral forward and reverse being stirred to evenly, rotating speed 90 ~ 360r/min, obtain the uniform reagent component mixture of mix;
(4) pour aluminosulfate cement, silicate cement, fine aggregate, reagent component mixture into reactor, after promote stirring and dispersing the link such as stirring, make the sticky type cement based sealing of oozing of the present embodiment renovation agent.
The sticky type cement based of oozing of the present embodiment seals renovation agent, water rate 0.19, blunge aftershaping, form removal after 12 hours, water curing to 7 day; The present embodiment ooze sticky type cement based sealing renovation agent, initial flow degree 330 ㎜, 30min degree of mobilization 340 ㎜, water curing after 7 days with C30 Concrete Bond Strength 2.4MPa, water curing is ultimate compression strength 57MPa after 7 days.

Claims (8)

1. one kind oozes sticky type cement based sealing renovation agent, it is characterized in that, raw material by weight percentage, comprises following component:
Cement 40% ~ 55%;
Ultrafine powder filler 1% ~ 5%;
Fine aggregate 40% ~ 50%;
Latex powder 0.5% ~ 3.0%;
Ether of cellulose 0.03% ~ 0.1%;
Hardening accelerator 0.1% ~ 0.5%;
Water reducer 0.2% ~ 1.0%;
Swelling agent 2% ~ 4%;
Retardant 0.03% ~ 0.5%;
Defoamer 0.05% ~ 0.2%;
Anion surfactant 0% ~ 0.02%.
2. a kind of sticky type cement based sealing renovation agent that oozes according to claim 1 is characterized in that: described cement is that one or more in aluminosulfate cement, general purpose portland cement are composited.
3. a kind of oozing according to claim 1 glued type cement based sealing renovation agent, and it is characterized in that: described ultrafine powder filler is for being not less than 1000m for specific surface area 2One or more in the flyash of/Kg, silica flour, breeze, Paris white.
4. a kind of oozing according to claim 1 glued type cement based sealing renovation agent, and it is characterized in that: described ether of cellulose is viscosity 200-10000mPas.
5. a kind of oozing according to claim 1 glued type cement based sealing renovation agent, and it is characterized in that: described swelling agent is one or more in high alumina, anhydrite, calcium oxide, alumina.
6. a kind of oozing according to claim 1 glued type cement based sealing renovation agent, and it is characterized in that: described hardening accelerator is one or more in vitriol, nitrate and nitrite, carbonate, trolamine and derivative thereof, ethylene glycol, formate etc.
7. a kind of sticky type cement based sealing renovation agent that oozes according to claim 1 is characterized in that: described retardant is a kind of in polyol, citric acid and salt thereof, tartrate and salt thereof, taurine and salt thereof, phenylformic acid and salt thereof, Whitfield's ointment and salt thereof etc.
8. an a kind of preparation method of oozing sticky type cement based sealing renovation agent as described as claim 1-11 any one, is characterized in that, comprises the following steps:
(1) after each chemical additive (except defoamer) vacuum-drying is less than to 1.0% to water ratio, cross 0.600 ㎜ square hole sieve, take institute's expense stand-by;
(2) by trace mineral supplements such as ether of cellulose, hardening accelerator, water reducer, swelling agent, retardant, defoamer, anion surfactants, take ultrafine powder filler, latex powder and three kinds of pulvis of swelling agent is thinner, in the container of sealing, carry out spiral forward and reverse being stirred to evenly, rotating speed 90 ~ 360r/min, obtain the uniform reagent component mixture of mix;
(3) cement, fine aggregate, the reagent component mixture after measuring poured reactor into, through after promoting and stirring and disperse the link such as stirring, makes the sticky type cement based sealing renovation agent that oozes of the present invention.
CN2013103856207A 2013-08-30 2013-08-30 Permeable-adhesive type cement-based sealing and repairing agent and preparation method thereof Pending CN103408273A (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103771809A (en) * 2014-01-01 2014-05-07 大连理工大学 Material for repairing microdefects on surface of concrete
CN105565740A (en) * 2015-12-26 2016-05-11 乔俊擎 Road and bridge concrete pavement repairing agent and preparation method thereof
CN105906241A (en) * 2016-04-19 2016-08-31 方耀 Formula of high workability concrete
CN108602722A (en) * 2016-03-31 2018-09-28 三菱综合材料株式会社 Rapid curing cement composition
CN110386787A (en) * 2019-08-01 2019-10-29 中建西部建设湖南有限公司 A kind of cement base self repairing agent and preparation method thereof
US10800701B2 (en) 2016-03-31 2020-10-13 Mitsubishi Materials Corporation Rapid-hardening cement composition

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102898107A (en) * 2012-10-26 2013-01-30 苏州市姑苏新型建材有限公司 Concrete healant

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102898107A (en) * 2012-10-26 2013-01-30 苏州市姑苏新型建材有限公司 Concrete healant

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103771809A (en) * 2014-01-01 2014-05-07 大连理工大学 Material for repairing microdefects on surface of concrete
CN103771809B (en) * 2014-01-01 2015-12-30 大连理工大学 A kind of concrete surface layer microdefect patching material
CN105565740A (en) * 2015-12-26 2016-05-11 乔俊擎 Road and bridge concrete pavement repairing agent and preparation method thereof
CN108602722A (en) * 2016-03-31 2018-09-28 三菱综合材料株式会社 Rapid curing cement composition
US10800701B2 (en) 2016-03-31 2020-10-13 Mitsubishi Materials Corporation Rapid-hardening cement composition
US11117833B2 (en) 2016-03-31 2021-09-14 Mitsubishi Materials Corporation Rapid-hardening mortar composition
CN105906241A (en) * 2016-04-19 2016-08-31 方耀 Formula of high workability concrete
CN110386787A (en) * 2019-08-01 2019-10-29 中建西部建设湖南有限公司 A kind of cement base self repairing agent and preparation method thereof
CN110386787B (en) * 2019-08-01 2021-10-08 中建西部建设湖南有限公司 Cement-based self-repairing agent and preparation method thereof

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Application publication date: 20131127