CN102838334A - Concrete member mending agent, preparation method and construction method - Google Patents
Concrete member mending agent, preparation method and construction method Download PDFInfo
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- CN102838334A CN102838334A CN2012103673362A CN201210367336A CN102838334A CN 102838334 A CN102838334 A CN 102838334A CN 2012103673362 A CN2012103673362 A CN 2012103673362A CN 201210367336 A CN201210367336 A CN 201210367336A CN 102838334 A CN102838334 A CN 102838334A
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Abstract
The invention relates to a concrete member mending agent which comprises concrete, coal ash, mineral powder, quartz sand, redispersible gelatine powder, water-retaining agent and thixotropic lubricant. The invention further relate to preparation method and construction method of the mending agent. The color of the mending agent is basically consistent with the color of a concrete member after hardening, and the mended concrete member has good appearance. The mending agent provided by the invention has longer service life, is wipe-wash-resistant and high in binding strength, and no secondary cracking can occur after mending. The preparation method and the construction method are simple and easy to implement.
Description
Technical field
The present invention relates to building material field, be specifically related to a kind of constructional method of healant, its preparation method and said healant of concrete member.
Background technology
In the current construction process, visual appearance defectives such as honeycomb and scale, sand holes, waterline, dew stone, bubble and be full of cracks generally appear in concrete structure easily.Reason with regard to its generation mainly contains: the raw material quality fluctuation is bigger, and concrete mix does not in time carry out effectively dynamically adjustment, causes its bleeding, segregation and race bubble; Concrete churning time wretched insufficiency, the homogeneity of concrete after causing building is relatively poor; The concrete placement mode improper and vibrate in deposit and Lou shake or cross the phenomenon of shaking, cause concrete disintegration; The concrete precuring is untimely, causes structural table slabbing line to occur.
Whenever above-mentioned appearance quality appears in concrete structure, the general treatment process of unit in charge of construction is directly with the grout repairing of wiping one's face.There is following deficiency in the direct mode of repairing of this grout: grout sclerosis back is not enough with structure basic unit cohesive force, comes off easily after use for some time; The grout aquation is shunk big, and be full of cracks appears in sclerosis back easily; The color after grout is repaired and the color of substrate concrete are inconsistent, have aberration.
For these reasons, press for a kind of patching material that can exist the concrete structure top layer of mass defect to carry out permanently effective repairing to outward appearance of development.
Summary of the invention
For overcoming the defective that exists in the existing concrete repairing, the purpose of this invention is to provide a kind of healant of concrete member.
Another object of the present invention provides the preparation method of said healant.
Another object of the present invention provides the constructional method of said healant.
The healant of concrete member provided by the invention comprises following component by weight:
Cement: 250～350 parts;
Flyash: 50～200 parts;
Breeze: 50～200 parts;
Silica sand: 200～350 parts;
Re-dispersible glue powder: 20～100 parts;
Water-holding agent: 0.1～5 part;
Thixotroping lubricant: 1～10 part.
Preferably, said healant comprises following component by weight:
Cement: 280～300 parts;
Flyash: 100～150 parts;
Breeze: 100～160 parts;
Silica sand: 250～300 parts;
Re-dispersible glue powder: 50～80 parts;
Water-holding agent: 0.3～2 part;
Thixotroping lubricant: 3～8 parts.
Said cement is silicate cement, aluminosulfate cement or the two mixture with the arbitrary proportion composition.
Said cement is preferably silicate cement by weight: aluminosulfate cement=65～90: the mixture of 1035 compositions.The mixture presetting period of silicate cement and aluminosulfate cement is short; Be about about 30min; And pass through the composite of different ratios, and can reach the suitable intensity and the balance of volumetric shrinkage value, the healant that has added said cement admixture has higher intensity and stable volumetric shrinkage property.
Said silica sand is preferably 70～120 purpose silica sands.
Said flyash is preferably II level flyash.
Said breeze is preferably S95 level breeze.
Above-mentioned silica sand, flyash, breeze are the main packing material of said healant; Select other combination packing material of specified particle diameter or level for use; Can make the filling effect of healant better, the component surface after the repairing is even, bright and clean careful, and close with common concrete member color; The two no color differnece, outward appearance is good.
Said re-dispersible glue powder is vinyl chloride-ethylene-tertiary carbon acid esters terpolymer rubber powder by weight: vinyl acetate-ethylene copolymer rubber powder=1～5: 1～3 mixture formed; Be preferably vinyl chloride-ethylene-tertiary carbon acid esters terpolymer rubber powder by weight: vinyl acetate-ethylene copolymer rubber powder=1～3: the mixture of 1 composition.Vinyl chloride-ethylene-tertiary carbon acid esters terpolymer rubber powder is the hydrophobic type re-dispersible glue powder; Vinyl acetate-ethylene copolymer rubber powder belongs to levelling type re-dispersible glue powder; Two kinds of dissimilar rubber powders carry out composite; The flowability and the cohesive strength of healant be can improve simultaneously, thereby the cohesive force and the workability of healant and surface of concrete structure effectively improved.
Said water-holding agent is an ether of cellulose; Be preferably hydroxyethylmethyl-cellulose ether.Said water-holding agent can effectively strengthen the water-retentivity of healant, reduces the maintenance number of times of repairing the back concrete member.
Said thixotroping lubricant can further improve the workability of healant, alleviates construction intensity.
Healant preparation method provided by the invention is: each component of above each said healant of technical scheme is mixed promptly get.Wherein, the order of addition(of ingredients) of said component is not special to be limited, and can be confirmed by those of ordinary skills.
Healant constructional method provided by the invention comprises two kinds, and first kind may further comprise the steps:
(1) remove the surperficial laitance of treating the mending concrete member, it is saturated until suction to spread water then;
(2) be water by weight: healant=0.1～0.5: 1 ratio forms slurry with said healant and water mixing;
(3) step (2) gained slurry is coated on said surface of treating the mending concrete member;
(4) compacting, polishing, water seasoning 5～10 times.
Wherein, in the said step (2) water and healant mixed and stir 20～30min, during stirring as finding the conglomeration of adularescent material, but the proper extension churning time.Churning time needs strict control, and the churning time deficiency can cause batch mixing inhomogeneous, and the long meeting of churning time was lost efficacy the rubber powder fusing.
In the said step (4), polishing back is water seasoning 5～10 times directly, and said water seasoning can be accomplished in one day or shorter time, does not need for a long time maintenance repeatedly, has alleviated construction intensity.
Second kind of constructional method may further comprise the steps:
(1) remove the surperficial laitance of treating the mending concrete member, it is saturated until suction to spread water then;
(2) directly said healant is coated on said surface of treating the mending concrete member;
The surface of concrete structure that will apply said healant in (3) second days is smeared wiping one time.
Second kind of constructional method abandoned traditional construction technology; Directly adopt healant dry powder to apply; Have the following advantages: saved the step that adds water formation slurry, be affected, guaranteed final construction effect thereby avoided mixing in the slurry forming process the inhomogeneous construction intensity that causes; Simplified the mode that applies; Saved after the coating like modification step and follow-up maintenance steps such as compacting, polishings, further simplified technology, alleviated construction intensity.
Particularly, first kind of constructional method may further comprise the steps:
(1) to the laitance of concrete members such as pending bridge pier, beam body, tunnel, track plate elder generation with wire brush outwash surface;
(2) again water treatment is spread on pending member top layer, suction is saturated until the top layer;
(3) be water by weight: healant=0.1～0.5: 1 ratio forms slurry with said healant and water mixing;
(4) adopt the mode of whitewashing said slurry to be coated in equably on the top layer of pending concrete member;
(5) artificial with spatula with its screeding and compaction;
(6) then manual work is received light with putty knife;
(7) treat after the said slurry initial set its surface to be handled with sand papering, get final product until no spatula vestige;
(8) water seasoning is 5 ~ 10 times, treats that its color becomes till the hydrated cementitious color.
Second kind of constructional method may further comprise the steps:
(1) first to concrete members such as pending bridge pier, beam body, tunnel, track plates with wire brush outwash surface laitance;
(2) again water treatment is spread on pending concrete member top layer, saturated until its suction;
(3) said healant dry powder is smeared equably the surface of pending member with towel;
With clean towel it was smeared to wipe again in (4) second days and get final product for one time.
In above-mentioned two kinds of constructional methods, the usage quantity of said healant, coating depth etc. can be confirmed according to the particular case of the component surface of required repairing by those of ordinary skills.
The present invention has following advantage:
(1) color of healant sclerosis back provided by the invention and concrete member is close, and the surface is careful smooth, and the member outward appearance after the repairing is good.
(2) healant provided by the invention has long work-ing life, scrubbing resistance, and cohesive strength is high, can reach more than the 2.5MPa, can not occur the secondary cracking after the repairing.
(3) constructional method provided by the invention is simple, and dry powder is smeared or slurry is smeared and can be obtained good repair efficiency, has alleviated construction intensity, has improved operating efficiency.
Embodiment
Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Embodiment 1
The prescription of healant is following:
P.O42.5 silicate cement: 240kg;
42.5 level aluminosulfate cement: 60kg;
II level flyash: 150kg;
S95 level breeze: 100kg;
70-120 order silica sand: 280kg;
Rubber powder 8031H:50kg;
Rubber powder 5011L:20kg;
Ether of cellulose 10007P4:0.5kg;
Thixotroping lubricant 602:5kg.
The preparation process is following: accurately take by weighing each feed composition of above-mentioned weight, mixing and stirring promptly gets.
Construction process is following:
(1) first to concrete members such as pending bridge pier, beam body, tunnel, track plates with wire brush outwash surface laitance;
(2) again water treatment is spread on pending concrete member top layer, saturated until the concrete surface layer suction;
(3) by weight for water: the ratio of healant=0.40: 1 is mixed said healant and water, about stir about 20min until the formation even slurry;
(4) adopt the mode of whitewashing said slurry to be coated in equably the surface of pending concrete member;
(5) artificial with spatula with its screeding and compaction;
(6) then manual work is received light with putty knife;
(7) treat after the said slurry initial set its surface to be handled with sand papering, get final product until no spatula vestige;
(8) water seasoning is 6 times, treats that its color becomes till the hydrated cementitious color.
Performance test by after the aforementioned constructional method construction processing is following:
(1) the matrix color basically identical of appearance color and concrete member;
(2) low water regain, 5 hours water regains of card stone pipe are 0.6ml;
(3) scrub performance, it is show-through to stand 20000 scourings;
(4) no obvious accumulation of salt in the surface soil phenomenon;
(5) tensile bond strength is high, and 1 day mark is supported field curing in+8 days and just can be reached (method of stipulating in the GB18445-2001 cementitious capillary waterproofing material is adopted in the test of cohesive strength) about 2.5MPa.
Embodiment 2
The cement paint prescription is following:
P.O42.5 silicate cement: 232kg;
42.5 level aluminosulfate cement: 58kg;
II level flyash: 100kg;
S95 level breeze: 160kg;
70-120 order silica sand: 300kg;
Rubber powder 8031H:45kg;
Rubber powder 5011L:20kg;
Ether of cellulose 10007P4:1kg;
Thixotroping lubricant 602:7kg.
The preparation process is following: accurately take by weighing each feed composition of above-mentioned weight, mixing and stirring promptly gets.
Construction process is following:
(1) first to concrete members such as pending bridge pier, beam body, tunnel, track plates with wire brush outwash surface laitance;
(2) again water treatment is spread on pending concrete member top layer, saturated until its top layer suction;
(3) healant dry powder is smeared equably the surface of pending member with towel;
With clean towel it was smeared to wipe again in (4) second days and get final product for one time.
Performance test by after the aforementioned constructional method construction processing is following:
(1) the matrix color basically identical of appearance color and concrete member;
(2) low water regain, 5 hours water regains of card stone pipe are 0.8ml;
(3) scrub performance, it is show-through to stand 20000 scourings;
(4) no obvious accumulation of salt in the surface soil phenomenon;
(5) tensile bond strength is high, and 1 day mark is supported field curing in+8 days and just can be reached (method of stipulating in the GB18445-2001 cementitious capillary waterproofing material is adopted in the test of cohesive strength) about 2.6MPa.
Embodiment 3
The prescription of healant is following:
P.O42.5 silicate cement: 260kg;
42.5 level aluminosulfate cement: 75kg;
II level flyash: 90kg;
S95 level breeze: 170kg;
70-120 order silica sand: 260kg;
Rubber powder 8031H:45kg;
Rubber powder 5011L:25kg;
Ether of cellulose 10007P4:1.3kg;
Thixotroping lubricant 602:9kg.
Preparing method and constructional method are with embodiment 1.
Performance test by after the aforementioned constructional method construction processing is following:
(1) the matrix color basically identical of appearance color and concrete member;
(2) low water regain, 5 hours water regains of card stone pipe are 0.7ml;
(3) scrub performance, it is show-through to stand 20000 scourings;
(4) no obvious accumulation of salt in the surface soil phenomenon;
(5) tensile bond strength is high, and 1 day mark is supported field curing in+8 days and just can be reached (method of stipulating in the GB18445-2001 cementitious capillary waterproofing material is adopted in the test of cohesive strength) about 2.7MPa.
Embodiment 4
The prescription of healant is following:
P.O42.5 silicate cement: 230kg;
42.5 level aluminosulfate cement: 50kg;
II level flyash: 85kg;
S95 level breeze: 185kg;
70-120 order silica sand: 310kg;
Rubber powder 8031H:60kg;
Rubber powder 5011L:30kg;
Ether of cellulose 10007P4:0.75kg;
Thixotroping lubricant 602:4kg.
Preparing method and constructional method are with embodiment 2.
Performance test by after the aforementioned constructional method construction processing is following:
(1) the matrix color basically identical of appearance color and concrete member;
(2) low water regain, 5 hours water regains of card stone pipe are 0.6ml;
(3) scrub performance, it is show-through to stand 20000 scourings;
(4) no obvious accumulation of salt in the surface soil phenomenon;
(5) tensile bond strength is high, and 1 day mark is supported field curing in+8 days and just can be reached (method of stipulating in the GB18445-2001 cementitious capillary waterproofing material is adopted in the test of cohesive strength) about 2.55MPa.
Though, the present invention has been done detailed description in the preceding text with general explanation and specific embodiments, on basis of the present invention, can to some modifications of do or improvement, this will be apparent to those skilled in the art.Therefore, these modifications or the improvement on the basis of not departing from spirit of the present invention, made all belong to the scope that requirement of the present invention is protected.
Claims (10)
1. the healant of a concrete member is characterized in that, comprises following component by weight:
Cement: 250～350 parts;
Flyash: 50～200 parts;
Breeze: 50～200 parts;
Silica sand: 200～350 parts;
Re-dispersible glue powder: 20～100 parts;
Water-holding agent: 0.1～5 part;
Thixotroping lubricant: 1～10 part.
2. healant according to claim 1 is characterized in that, comprises following component by weight:
Cement: 280～300 parts;
Flyash: 100～150 parts;
Breeze: 100～160 parts;
Silica sand: 250～300 parts;
Re-dispersible glue powder: 50～80 parts;
Water-holding agent: 0.3～2 part;
Thixotroping lubricant: 3～8 parts.
3. healant according to claim 1 and 2 is characterized in that, said cement is silicate cement, aluminosulfate cement or the two mixture with the arbitrary proportion composition; Be preferably silicate cement by weight: aluminosulfate cement=65～90: the mixture of 1035 compositions.
4. according to each described healant of claim 1-3, it is characterized in that said silica sand is 70～120 silica sand.
5. according to each described healant of claim 1-4, it is characterized in that said flyash is II level flyash.
6. according to each described healant of claim 1-5, it is characterized in that said re-dispersible glue powder is vinyl chloride-ethylene-tertiary carbon acid esters terpolymer rubber powder by weight: vinyl acetate-ethylene copolymer rubber powder=1～5: 1～3 mixture formed; Be preferably vinyl chloride-ethylene-tertiary carbon acid esters terpolymer rubber powder by weight: vinyl acetate-ethylene copolymer rubber powder=1～3: the mixture of 1 composition.
7. according to each described healant of claim 1-6, it is characterized in that said water-holding agent is an ether of cellulose; Be preferably hydroxyethylmethyl-cellulose ether.
8. the preparation method of each said healant of claim 1-7 is characterized in that, each component of said healant is mixed promptly get.
9. the constructional method of each said healant of claim 1-7 is characterized in that, may further comprise the steps:
(1) remove the surperficial laitance of treating the mending concrete member, it is saturated until suction to spread water then;
(2) be water by weight: healant=0.1～0.5: 1 ratio forms slurry with said healant and water mixing;
(3) step (2) gained slurry is coated on said surface of treating the mending concrete member;
(4) compacting, polishing, water seasoning 5～10 times.
10. the constructional method of each said healant of claim 1-7 is characterized in that, may further comprise the steps:
(1) remove the surperficial laitance of treating the mending concrete member, it is saturated until suction to spread water then;
(2) directly said healant is coated on said surface of treating the mending concrete member;
The surface of concrete structure that will apply said healant in (3) second days is smeared wiping one time.
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Cited By (7)
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| CN104211358A (en) * | 2014-09-11 | 2014-12-17 | 中国中材国际工程股份有限公司 | Rapid-hardening early strength high-ductility cement-based composite material and preparation method thereof |
| CN104926258A (en) * | 2015-06-26 | 2015-09-23 | 山东天玉墙体材料有限公司 | Autoclaved aerated concrete plate repairing agent |
| CN104944872A (en) * | 2015-06-18 | 2015-09-30 | 关其焕 | Cement concrete pavement self-repair material and preparation method thereof |
| CN105218058A (en) * | 2015-11-04 | 2016-01-06 | 江苏名和集团有限公司 | A kind of concrete speed is hammered in slurry healant |
| CN106917333A (en) * | 2017-03-15 | 2017-07-04 | 张启志 | A kind of traceless repair method of concrete road |
| CN109098467A (en) * | 2018-09-11 | 2018-12-28 | 嘉善凯达水泥构件有限公司 | A kind of crack repairing method of curved surface cement components |
| CN109180117A (en) * | 2018-11-16 | 2019-01-11 | 石家庄铁道大学 | A kind of concrete structure appearance chromatic difference patching material and its construction method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104211358A (en) * | 2014-09-11 | 2014-12-17 | 中国中材国际工程股份有限公司 | Rapid-hardening early strength high-ductility cement-based composite material and preparation method thereof |
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| CN104944872A (en) * | 2015-06-18 | 2015-09-30 | 关其焕 | Cement concrete pavement self-repair material and preparation method thereof |
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| CN105218058A (en) * | 2015-11-04 | 2016-01-06 | 江苏名和集团有限公司 | A kind of concrete speed is hammered in slurry healant |
| CN106917333A (en) * | 2017-03-15 | 2017-07-04 | 张启志 | A kind of traceless repair method of concrete road |
| CN109098467A (en) * | 2018-09-11 | 2018-12-28 | 嘉善凯达水泥构件有限公司 | A kind of crack repairing method of curved surface cement components |
| CN109180117A (en) * | 2018-11-16 | 2019-01-11 | 石家庄铁道大学 | A kind of concrete structure appearance chromatic difference patching material and its construction method |
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| CN102838334B (en) | 2014-06-11 |
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