CN106977230A - A kind of preparation method of water conservation self-repair type curing compound - Google Patents
A kind of preparation method of water conservation self-repair type curing compound Download PDFInfo
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- CN106977230A CN106977230A CN201710337091.1A CN201710337091A CN106977230A CN 106977230 A CN106977230 A CN 106977230A CN 201710337091 A CN201710337091 A CN 201710337091A CN 106977230 A CN106977230 A CN 106977230A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/04—Preventing evaporation of the mixing water
Abstract
The invention discloses a kind of preparation method of water conservation self-repair type curing compound, belong to concrete additive preparing technical field.Stalagmite and shell are crushed and obtain rich crushed material calciferous by the present invention, and from biofermentation thing the isolated zymotic fluid rich in amino acid, and utilize zymotic fluid and flax fiber, fermentation materials are made in Grape Skin mixed fermentation, with egg after then peach gum water is dissolved, film liquid is made in scattered derive from of the shearing such as beeswax, finally by sodium silicate solution, the grinding discharging such as crushed material and fermentation materials, it can be prepared by water conservation self-repair type curing compound, curing compound produced by the present invention is preferable into film toughness, avoid due to the moisture loss that film ftractures and causes, effectively it can prevent moisture evaporation by blocking concrete top layer hole simultaneously, play infiltration maintenance, the effect of water conservation autotrophy, and sealing compound of the present invention is sprayed at concrete surface, concrete crushing strength can be effectively improved, cracking resistance and reduction volume contraction.
Description
Technical field
The invention discloses a kind of preparation method of water conservation self-repair type curing compound, belong to concrete additive system
Standby technical field.
Background technology
Maintenance is an important step in concrete construction, directly influences the mechanics and endurance quality of concrete
And the service life of structure.First, the intensity of concrete derives from the aquation of cement, and good maintenance prevents the mistake of moisture
Fast evaporation, has ensured the moisture that hydrated cementitious needs, while suppressing the generation of early-age shrinkage cracking, hence it is evident that improve the resistance to of concrete
Long property, secondly, rational maintenance can reduce the weak boundary that inside concrete gathers materials between cement mortar, to a certain extent
Reduce the permeability of structure, extend the service life of concrete.
The maintenance process used in current engineering is mainly conserved with spray sprinkler, moist covering is conserved, plastic foil maintenance
Based on traditional curing means, waste time and energy and pollute environment.By workmen's quality, level of operation and the shadow of construction organization
Ring, cast-in-place concrete generally existing conserves phenomenon not in place, and especially during the broiling summer, concrete surface dehydration is too fast,
The early crack to be formed is acted on by concrete shrinkage, stress constraint more universal, give engineering weight band to carry out larger hidden danger simultaneously.
In recent years, maintenance is gradually paid attention to by people, at present, and existing all kinds of film forming sealing compounds are broadly divided into inorganic and had
The major class of machine two.Inorganic sealing compound is the care products being employed earliest, by penetrating into concrete surface layer and participating in hydration reaction envelope
Stifled top layer hole realizes maintenance effect, because its is with low cost and is favored by engineering, but its water retention only 20~30%, in punja
Area can not effectively prevent the evaporation of concrete surface layer moisture, applied when concentration is high and there is also surface fishes honeycomb cracks or surface
Loose phenomenon；It is foster to realize that organic sealing compound sticks to the fine and close impermeable film of formation on concrete surface layer by its film-forming components
Shield, because film-formation result is good, its water retention is greatly improved compared with inorganic product, is most popular care products, but organic at present
There are many defects having much room for improvement on film performance, such as water film is easily swelled, and is worn no resistance, top layer crack resistance is inadequate etc..
It would therefore be highly desirable to develop a kind of water-retaining property, wearability and the superior curing compound product of crack resistance.
The content of the invention
Present invention mainly solves technical problem：There is poor water retention property, gained for curing compound common at present
Film layer is easily swelled, top layer crack resistance not enough cause crack produce, it is necessary to the defect manually repaired there is provided a kind of concrete curing
The preparation method of agent.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
（1）2~3kg stalagmites and 1~2kg shell 3~5h of water retting are weighed, then the stalagmite and shell after dipping are pulled out, is stood
3~5min is freezed with liquid nitrogen spraying, then will be dried after 30~40min of the stalagmite after freezing and grinding shells, continuation grinding 1~
2h, crosses 200 mesh sieves, obtains mixed-powder, standby；
（2）Smashed to pieces after weighing 300~400g lemons, 200~300g grapes, 200~300g loach and the mixing of 400~500g pineapples
1~2h is handled, obtains mixing particle, gained mixing particle is placed in greenhouse, 3~5 angels mixing particle surface hair is stood
It is mould, obtain mouldy mixing particle；
（3）Above-mentioned mouldy mixing particle is fitted into fermentation tank, then 2~3L water is added into fermentation tank, it is close at 35~45 DEG C
Seal ferment 7~9 days, is filtered, isolated zymotic fluid after after fermentation ends, taking out tunning；
（4）By flax fiber and above-mentioned zymotic fluid it is well mixed after be again loaded into fermentation tank, then add into fermentation tank fresh
Grape Skin, seals tank mouth after fermentation, obtains fermentation materials, standby；
（5）One of lateral sulcus is cut open in the sunny slope that peach does with cutter, trench digging collects the peach that lateral sulcus surface is secreted out of after 3~5 days
Glue, is heated to 90~100 DEG C, stirring until peach gum dissolving, is removed with three layers of filtered through gauze and filtered after peach gum and water are mixed
Slag, obtains filtrate, then scattered by being sheared after gained filtrate and egg, beeswax and the mixing of Mesona chinensis Benth's blade, obtains being made certainly
Film liquid；
（6）Count by weight, weigh 30~40 parts of mass fractions for 40% sodium silicate solution, 10~15 parts of steps（1）Standby
Mixed-powder, 5~10 parts of steps（4）Standby fermentation materials, 3~4 parts of isobutyl triethoxy silanes are poured into colloid mill, are ground
Discharged after 20~30min of mill mixing, produce water conservation self-repair type curing compound.
Step（2）Described in warm indoor temperature be 30~40 DEG C, relative air humidity in greenhouse is 60~70%.
Step（3）Described in again into fermentation tank add 2~3L water while can also be added into fermentation tank 3~5g Asia
Sodium sulphate.
Step（4）Described in flax fiber and zymotic fluid mass ratio be 1:5, the addition of fresh Grape Skin and flax
The quality of fiber is equal, and fermentation temperature is 35~37 DEG C, and fermentation time is 2~3 days.
Described peach trunk diameter is 5~10cm, and lateral sulcus length is 5~8cm, trench digging height distance ground 1.0~
1.2m。
Described peach gum and the mass ratio of water are 1:5, the mass ratio of filtrate and egg, beeswax and Mesona chinensis Benth's blade is
10:2:1:1。
It is 1000~2000r/min that described shearing, which disperses rotating speed, and shearing jitter time is 1~2h.
The beneficial effects of the invention are as follows：
（1）The present invention utilizes " ice is split " effect to crush stalagmite and shell, obtains rich crushed material calciferous, then from biofermentation
The isolated zymotic fluid rich in amino acid in thing, is modified, increase using zymotic fluid in the presence of microorganism to flax fiber
Its surface hydrophilicity amino quantity, improves fiber water-retaining property, and with its raw material as curing compound, so as to improve maintenance
The water retention property of agent, using rear concrete seven 2h water retentions be 95.7~97.1%, 168h water retentions still up to 91.3~93.6%；
（2）The present invention recycles organic acid and calcium carbonate reaction in zymotic fluid to produce carbon dioxide and water and form carbonic acid, carbon
Acid and sodium silicate solution immerse inside concrete through infiltration and diffusion, and both are reacted in generation silicic acid gel, zymotic fluid
Microorganism takes food the nutriments such as egg and continues the generation heat that ferments, and the heat of generation makes silicic acid be dehydrated to form silica,
With the progress of reaction, crystalline silica nuclei gradually increases up to concrete crack is blocked completely, reaches the effect of selfreparing,
Without manually repairing crack；
（3）The present invention is dehydrated the effect of the silica and natural resin peach gum that produce through silane coupler using silicic acid and carries out silicon
Oxygen key crosslinking is combined, and the rigid film layer of formation, blocking concrete top layer hole prevents moisture evaporation, plays infiltration maintenance, water conservation is certainly
Foster effect, and rigid film layer wearability is strong, should not be swelled, crack resistance is strong.
Embodiment
Weigh first in 2~3kg stalagmites and 1~2kg shells immersion 10~15L deionized waters and impregnate 3~5h, then will dipping
Stalagmite and shell afterwards is pulled out, is laid in ground, freezes 3~5min with liquid nitrogen spraying immediately, then by the stalagmite after freezing and
Shell is transferred in ball mill, is put into baking oven after 30~40min of grinding, 1~2h is dried at 105~110 DEG C, ball milling is transferred to again
Continue to grind 1~2h in machine, cross 200 mesh sieves, obtain mixed-powder, weigh 300~400g lemons, 200~300g grapes, 200
It is put into after~300g loach and the mixing of 400~500g pineapples in stone mortar, 1~2h of processing is smashed to pieces with stone pestle, obtains mixing particle, will
Gained mixing particle is laid in bamboo sieve, is placed on temperature for 30~40 DEG C, relative air humidity in 60~70% greenhouse,
3~5 angels mixing particle surface from mildewing is stood, mouldy mixing particle is obtained, then mouldy mixing particle is fitted into fermentation tank, then
2~3L water and 3~5g sodium sulfites, sealed fermenter are added into fermentation tank, heat-preservation fermentation 7~9 days, are treated at 35~45 DEG C
After fermentation ends, tunning filtering is taken out, isolated zymotic fluid is then 1 in mass ratio:5 by flax fiber and fermentation
It is again loaded into after liquid is well mixed in fermentation tank, then the fresh Grape Skin of the quality such as flax fiber is added into fermentation tank, is sealed
It is placed on after tank mouth in the greenhouse that temperature is 35~37 DEG C, heat-preservation fermentation is handled 2~3 days, is obtained fermentation materials, is selected trunk straight
Footpath is 5~10cm peach, and the lateral sulcus that one length is 5~8cm is cut open in the sunny slope that peach does with cutter, trench digging height away from
1.0~1.2m from the ground, lateral sulcus is opened cut completion 3~5 days after, collect the peach gum that lateral sulcus surface is secreted out of, then will collect what is obtained
Peach gum and water are 1 in mass ratio:90~100 DEG C, stirring are heated to after 5 mixing until peach gum dissolves, with three layers of gauze mistake
Filter off and remove filter residue, obtain filtrate, then by gained filtrate and egg, beeswax and Mesona chinensis Benth's blade be 10 in mass ratio:2:1:1
It is fitted into after mixing in high-shearing dispersion emulsifying machine, 1~2h is disperseed with 1000~2000r/min rotating speed cuttings, obtains making film forming by oneself
Liquid, is finally counted by weight, weighs 30~40 parts of mass fractions for 40% sodium silicate solution, 10~15 parts of mixed-powder, 5
~10 parts of fermentation materials, 3~4 parts of isobutyl triethoxy silanes are poured into colloid mill, are gone out after 20~30min of ground and mixed
Material, produces water conservation self-repair type curing compound.
Example 1
Weigh first in 2kg stalagmites and 1kg shells immersion 10L deionized waters and impregnate 3h, then the stalagmite and shell after dipping are dragged for
Go out, be laid in ground, freeze 3~5min with liquid nitrogen spraying immediately, then the stalagmite and shell after freezing are transferred in ball mill,
Baking oven is put into after grinding 30min, 1h is dried at 105 DEG C, is transferred to again in ball mill and continues to grind 1h, cross 200 mesh sieves, obtain
Mixed-powder, is put into stone mortar after weighing 300g lemons, 200g grapes, 200g loach and the mixing of 400g pineapples, is smashed to pieces with stone pestle
1h is handled, obtains mixing particle, gained mixing particle is laid in bamboo sieve, it is 30 DEG C, relative air humidity to be placed on temperature
In 60% greenhouse, to stand 3 angels mixing particle surface from mildewing, mouldy mixing particle is obtained, then mouldy mixing particle is loaded
In fermentation tank, then the addition 2L water into fermentation tank, sealed fermenter, heat-preservation fermentation 7 days at 35 DEG C, after after fermentation ends, take
Go out tunning filtering, isolated zymotic fluid is then 1 in mass ratio:5 by flax fiber and zymotic fluid it is well mixed after again
Temperature is placed in secondary loading fermentation tank, then after adding into fermentation tank the fresh Grape Skin of the quality such as flax fiber, sealing tank mouth
Spend in the greenhouse for 35 DEG C, heat-preservation fermentation is handled 2 days, obtains fermentation materials, select the peach that trunk diameter is 5cm, use cutter
The sunny slope done in peach cuts open the lateral sulcus that one of length is 5cm, and ditch height distance ground 1.0m, and lateral sulcus, which is opened, cuts completion 3 days
Afterwards, the peach gum that lateral sulcus surface is secreted out of is collected, then will collect obtained peach gum and water is 1 in mass ratio:Heat temperature raising after 5 mixing
To 90 DEG C, stirring obtains filtrate until peach gum dissolving, filter residues are removed with three layers of filtered through gauze, then by gained filtrate and egg,
Beeswax and Mesona chinensis Benth's blade are 10 in mass ratio:2:1:It is fitted into after 1 mixing in high-shearing dispersion emulsifying machine, with 1000r/min
Rotating speed cutting disperses 1h, obtains making into film liquid by oneself, finally counts by weight, weighs 30 parts of mass fractions molten for 40% sodium metasilicate
Liquid, 10 parts of mixed-powder, 5 parts of fermentation materials, 3 parts of isobutyl triethoxy silanes are poured into colloid mill, ground and mixed
Discharged after 20min, produce water conservation self-repair type curing compound.
Example 2
Weigh first in 2kg stalagmites and 1kg shells immersion 13L deionized waters and impregnate 4h, then the stalagmite and shell after dipping are dragged for
Go out, be laid in ground, freeze 4min with liquid nitrogen spraying immediately, then the stalagmite and shell after freezing are transferred in ball mill, ground
Baking oven is put into after mill 35min, 1h is dried at 108 DEG C, is transferred to again in ball mill and continues to grind 1h, cross 200 mesh sieves, mixed
Powder is closed, is put into after weighing 350g lemons, 250g grapes, 250g loach and the mixing of 450g pineapples in stone mortar, place is smashed to pieces with stone pestle
1h is managed, obtains mixing particle, gained mixing particle is laid in bamboo sieve, it is 35 DEG C to be placed on temperature, relative air humidity is
In 65% greenhouse, 4 angels mixing particle surface from mildewing is stood, mouldy mixing particle is obtained, then mouldy mixing particle is loaded into hair
In fermentation tank, then the addition 2L water into fermentation tank, sealed fermenter, heat-preservation fermentation 8 days at 40 DEG C, after after fermentation ends, take out
Tunning is filtered, isolated zymotic fluid, is then 1 in mass ratio:5 by flax fiber and zymotic fluid it is well mixed after again
It is fitted into fermentation tank, then the fresh Grape Skin of the quality such as flax fiber is added into fermentation tank, temperature is placed on after sealing tank mouth
For in 36 DEG C of greenhouses, heat-preservation fermentation is handled 2 days, obtains fermentation materials, the peach that trunk diameter is 8cm is selected, is existed with cutter
The dry sunny slope of peach cuts open the lateral sulcus that one of length is 7cm, and ditch height distance ground 1.1m, lateral sulcus is opened cut completion 4 days after,
The peach gum that lateral sulcus surface is secreted out of is collected, then will collect obtained peach gum and water is 1 in mass ratio:It is heated to after 5 mixing
95 DEG C, stirring obtain filtrate until peach gum dissolving, filter residues are removed with three layers of filtered through gauze, then by gained filtrate and egg, honeybee
Wax and Mesona chinensis Benth's blade are 10 in mass ratio:2:1:It is fitted into after 1 mixing in high-shearing dispersion emulsifying machine, is turned with 1500r/min
The scattered 1h of speed shearing, obtains making into film liquid by oneself, finally counts by weight, weigh 35 parts of mass fractions for 40% sodium silicate solution,
13 parts of mixed-powder, 8 parts of fermentation materials, 3 parts of isobutyl triethoxy silanes are poured into colloid mill, ground and mixed 25min
After discharge, produce water conservation self-repair type curing compound.
Example 3
Weigh first in 3kg stalagmites and 2kg shells immersion 15L deionized waters and impregnate 5h, then the stalagmite and shell after dipping are dragged for
Go out, be laid in ground, freeze 5min with liquid nitrogen spraying immediately, then the stalagmite and shell after freezing are transferred in ball mill, ground
Baking oven is put into after mill 40min, 2h is dried at 110 DEG C, is transferred to again in ball mill and continues to grind 2h, cross 200 mesh sieves, mixed
Powder is closed, is put into after weighing 400g lemons, 300g grapes, 300g loach and the mixing of 500g pineapples in stone mortar, place is smashed to pieces with stone pestle
2h is managed, obtains mixing particle, gained mixing particle is laid in bamboo sieve, it is 40 DEG C to be placed on temperature, relative air humidity is
In 70% greenhouse, 5 angels mixing particle surface from mildewing is stood, mouldy mixing particle is obtained, then mouldy mixing particle is loaded into hair
In fermentation tank, then addition 3L water and 5g sodium sulfites into fermentation tank, the dissolved oxygen in water, enhancing hair are consumed using sodium sulfite
Anaerobism atmosphere in fermentation tank, the progress of promotion fermentation, subsequent sealed fermenter, heat-preservation fermentation 9 days, treat fermentation ends at 45 DEG C
Afterwards, tunning filtering is taken out, isolated zymotic fluid is then 1 in mass ratio:Flax fiber and zymotic fluid are mixed equal by 5
It is again loaded into after even in fermentation tank, then the fresh Grape Skin of the quality such as flax fiber is added into fermentation tank, is put after sealing tank mouth
Put in temperature as in 37 DEG C of greenhouse, heat-preservation fermentation is handled 3 days, obtains fermentation materials, select the peach that trunk diameter is 10cm,
The lateral sulcus that one of length is 8cm is cut open in the sunny slope that peach does with cutter, ditched height distance ground 1.2m, and lateral sulcus, which is opened, have been cut
Into after 5 days, the peach gum that lateral sulcus surface is secreted out of is collected, then will collect obtained peach gum and water is 1 in mass ratio:Add after 5 mixing
Heat is warming up to 100 DEG C, and stirring obtains filtrate until peach gum dissolving, filter residues are removed with three layers of filtered through gauze, then by gained filtrate and
Egg, beeswax and Mesona chinensis Benth's blade are 10 in mass ratio:2:1:It is fitted into after 1 mixing in high-shearing dispersion emulsifying machine, with
2000r/min rotating speed cuttings disperse 2h, obtain making into film liquid by oneself, finally count by weight, and it is 40% to weigh 40 parts of mass fractions
Sodium silicate solution, 15 parts of mixed-powder, 10 parts of fermentation materials, 4 parts of isobutyl triethoxy silanes are poured into colloid mill, are ground
Discharged after mill mixing 30min, produce water conservation self-repair type curing compound.
Water conservation self-repair type curing compound made from example 1~3 and commercially available film-forming type curing compound are distinguished
Maintenance experiment and performance test are carried out in the concrete road surface newly poured, its construction method is：In mass ratio 5:1, by concrete
Sealing compound mixes 5min with water stirring, obtains conditioning solutions, conditioning solutions are uniformly sprayed at into what is newly poured followed by sprayer
Concrete road surface top layer, it is 40cm with concrete road surface distance to control shower nozzle, and spray pressure is 0.4MPa, conditioning solutions quantity for spray
For 180g/m2, it is to be sprayed after the completion of, recycle plastic sheeting to carry out covering curing 5 days to concrete road surface.It detects knot
Fruit such as following table：
Above-described embodiment is not limited for the present invention preferably embodiment, but embodiments of the present invention by above-described embodiment
System, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (7)
1. a kind of preparation method of water conservation self-repair type curing compound, it is characterised in that specifically preparation process is：
（1）2~3kg stalagmites and 1~2kg shell 3~5h of water retting are weighed, then the stalagmite and shell after dipping are pulled out, is stood
3~5min is freezed with liquid nitrogen spraying, then will be dried after 30~40min of the stalagmite after freezing and grinding shells, continuation grinding 1~
2h, crosses 200 mesh sieves, obtains mixed-powder, standby；
（2）Smashed to pieces after weighing 300~400g lemons, 200~300g grapes, 200~300g loach and the mixing of 400~500g pineapples
1~2h is handled, obtains mixing particle, gained mixing particle is placed in greenhouse, 3~5 angels mixing particle surface hair is stood
It is mould, obtain mouldy mixing particle；
（3）Above-mentioned mouldy mixing particle is fitted into fermentation tank, then 2~3L water is added into fermentation tank, it is close at 35~45 DEG C
Seal ferment 7~9 days, is filtered, isolated zymotic fluid after after fermentation ends, taking out tunning；
（4）By flax fiber and above-mentioned zymotic fluid it is well mixed after be again loaded into fermentation tank, then add into fermentation tank fresh
Grape Skin, seals tank mouth after fermentation, obtains fermentation materials, standby；
（5）One of lateral sulcus is cut open in the sunny slope that peach does with cutter, trench digging collects the peach that lateral sulcus surface is secreted out of after 3~5 days
Glue, is heated to 90~100 DEG C, stirring until peach gum dissolving, is removed with three layers of filtered through gauze and filtered after peach gum and water are mixed
Slag, obtains filtrate, then scattered by being sheared after gained filtrate and egg, beeswax and the mixing of Mesona chinensis Benth's blade, obtains being made certainly
Film liquid；
（6）Count by weight, weigh 30~40 parts of mass fractions for 40% sodium silicate solution, 10~15 parts of steps（1）Standby
Mixed-powder, 5~10 parts of steps（4）Standby fermentation materials, 3~4 parts of isobutyl triethoxy silanes are poured into colloid mill, are ground
Discharged after 20~30min of mill mixing, produce water conservation self-repair type curing compound.
2. a kind of preparation method of water conservation self-repair type curing compound according to claim 1, it is characterised in that：Step
Suddenly（2）Described in warm indoor temperature be 30~40 DEG C, relative air humidity in greenhouse is 60~70%.
3. a kind of preparation method of water conservation self-repair type curing compound according to claim 1, it is characterised in that：Step
Suddenly（3）Described in again into fermentation tank add 2~3L water while 3~5g sodium sulfites can also be added into fermentation tank.
4. a kind of preparation method of water conservation self-repair type curing compound according to claim 1, it is characterised in that：Step
Suddenly（4）Described in flax fiber and zymotic fluid mass ratio be 1:5, the addition of fresh Grape Skin and the quality of flax fiber
Equal, fermentation temperature is 35~37 DEG C, and fermentation time is 2~3 days.
5. a kind of preparation method of water conservation self-repair type curing compound according to claim 1, it is characterised in that：Institute
The peach trunk diameter stated is 5~10cm, and lateral sulcus length is 5~8cm, trench digging height distance 1.0~1.2m of ground.
6. a kind of preparation method of water conservation self-repair type curing compound according to claim 1, it is characterised in that：Institute
The peach gum and the mass ratio of water stated are 1:5, the mass ratio of filtrate and egg, beeswax and Mesona chinensis Benth's blade is 10:2:1:1.
7. a kind of preparation method of water conservation self-repair type curing compound according to claim 1, it is characterised in that：Institute
It is 1000~2000r/min that the shearing stated, which disperses rotating speed, and shearing jitter time is 1~2h.
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| CN107746239A (en) * | 2017-10-16 | 2018-03-02 | 孙建忠 | A kind of preparation method of high bond strength cement mortar |
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| CN108298906A (en) * | 2018-02-10 | 2018-07-20 | 黄旭东 | A kind of preparation method of permanent seal cooling frost-resistant concrete |
| CN113856869A (en) * | 2021-09-28 | 2021-12-31 | 连云港宏润再生资源有限公司 | Finer ball-milling crushing device for spandex recovery processing and using method |
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| CN108298906A (en) * | 2018-02-10 | 2018-07-20 | 黄旭东 | A kind of preparation method of permanent seal cooling frost-resistant concrete |
| CN113856869A (en) * | 2021-09-28 | 2021-12-31 | 连云港宏润再生资源有限公司 | Finer ball-milling crushing device for spandex recovery processing and using method |
| CN113856869B (en) * | 2021-09-28 | 2023-03-10 | 连云港宏润再生资源有限公司 | Finer ball-milling crushing device for spandex recovery processing and using method |
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Application publication date: 20170725 |