CN108623229A - A kind of ultra-retardation concrete and preparation method thereof - Google Patents
A kind of ultra-retardation concrete and preparation method thereof Download PDFInfo
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- CN108623229A CN108623229A CN201810708515.5A CN201810708515A CN108623229A CN 108623229 A CN108623229 A CN 108623229A CN 201810708515 A CN201810708515 A CN 201810708515A CN 108623229 A CN108623229 A CN 108623229A
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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Abstract
The present invention relates to a kind of ultra-retardation concretes and preparation method thereof, are related to concrete field.It is directed to a kind of ultra-retardation concrete with higher intensity and longer setting time.Include specifically following component, cement, middle sand, rubble, bamboo fibre, retarder, quartz sand powder, silica flour, lithium powder, water-reducing agent, water；The retarder includes modified pulp black liquor, sucrose, starch, bis- [γ (triethoxysilicane) propyl] tetrasulfides, aluminum sulfate.The mixing of retarder selection modified pulp black liquor and sucrose, starch can enhance the retarding effect of retarder, cross-linking properties is good between retarder and fiber simultaneously, then further increase the dispersing uniformity of retarder, coagulant is uniformly dispersed, while reducing the hydration rate of cement, reduce the generation in crack, and bamboo fibre is coordinated to be used together, bamboo fibre can enhance the intensity of concrete while limiting crack.Intensity also relatively high feature while realizing slow setting.
Description
Technical field
The present invention relates to concrete fields more particularly to a kind of ultra-retardation concrete and preparation method thereof.
Background technology
With the propulsion of Chinese Urbanization, superelevation, super refreshing, ultra-large architectural engineering continue to bring out, therefore also to coagulation
More stringent requirements are proposed for the technology of soil.In the skills in drilling occlusive pile construction engineering of the deep basal pits enclosed structure such as subway, station,
It asks the presetting period of concrete to reach 60h or more, and must have enough later strengths, super coagulation concrete skill is proposed with this
Art requirement.Ultra-retardation concrete is to reach 60-80h in a kind of presetting period in order to meet special construction requirement and special configuration,
28d intensity is not less than the new concrete of design strength grade.The development and application of ultra-retardation concrete can meet concrete
The diversification of construction technology.
Since extra retarded set and concrete strength development are from the angle of materialogy contradiction, usual hole-drilling interlocking pile itself
With ultra-retardation concrete be meet 60h-80h setting time require, intensity requirement is relatively low, common intensity require be C15 or
C20.But when for other construction sites, higher intensity and Slow setting time may require that, so working out a kind of with more
The ultra-retardation concrete of high intensity and longer setting time is a technical problem to be solved urgently.
Invention content
The purpose of the present invention is to provide a kind of ultra-retardation concretes, have the advantages that high intensity and long Slow setting time.
The present invention above-mentioned purpose technical scheme is that：
A kind of ultra-retardation concrete, including following component, cement, middle sand, rubble, bamboo fibre, retarder, quartz sand powder, silica flour,
Lithium powder, water-reducing agent, water；
The retarder includes modified pulp black liquor, sucrose, starch, double-[γ-(triethoxysilicane) propyl] tetrasulfide, sulphur
Sour aluminium.
Implement above-mentioned technical proposal, bamboo fibre can limit microcrack in cement matrix as a kind of green ecological fiber
Middle appearance and development, in each stage of concrete formation, bamboo fibre is dispersed in the drawing that can be undertaken in concrete and shrink bleed
Stress even prevents the generation in crack to reduce.
The use of black liquor increases the utilization rate of secondary stock black liquor in retarder, more environmentally-friendly.
Sugarcane sugar and starch has stronger solid-liquid surface-active, can be adsorbed on cement minerals particle surface and form solvation
Adsorption layer hinders the contact and cohesion of particle, destroys the flocculent structure of cement, and cement initial stage aquation sugar calcium is made to contain multiple hydroxyls,
There is stronger inhibiting effect to cement initial stage aquation, free water can be made to increase, improve the mobility of cement mortar, slow down cement
Setting rate.The aluminum sulfate of addition can be used cooperatively with starch and sucrose, reduce the crack of concrete.Phase between retarder simultaneously
Mutually cooperation, can improve the function of slump protection of concrete, can also reduce the concrete structure caused by retarder retarding effect and tear open
Mould time length denounces.
Lithium powder and silica flour are used cooperatively the intensity that can increase concrete, while the more standby environmental protection of the usage amount for reducing cement
Property.
The mixing of retarder selection modified pulp black liquor and sucrose, starch can enhance the retarding effect of retarder, simultaneously
Cross-linking properties is good between retarder and fiber, then further increases the dispersing uniformity of retarder, and coagulant is uniformly dispersed,
While reducing the hydration rate of cement, reduce the generation in crack, and bamboo fibre is coordinated to be used together, bamboo fibre can be
Enhance the intensity of concrete while limiting crack.So the concrete of present specification has high intensity and long Slow setting time.
Further, the ultra-retardation concrete includes the component of following parts by weight, 250-260 parts of cement, middle sand 725-
860 parts, 700-750 parts of rubble, 10-12 parts of bamboo fibre, 8-8.5 parts of retarder, 100-120 parts of quartz sand powder, silica flour 10-30
Part, 10-30 parts of lithium powder, 4-5 parts of water-reducing agent, 150-200 parts of water.
Further, the retarder includes the component of following weight percentage, modified pulp black liquor 20-40%, sucrose
40-50%, starch 10-20%, double-[γ-(triethoxysilicane) propyl] tetrasulfide 1-5%, aluminum sulfate 1-5%.
The compositional range of implementation above-mentioned technical proposal, concrete and retarder is matched according to above, the concrete of generation
Stability is high.
Further, the modified pulp black liquor includes following processing procedure：Using sulphur acid for adjusting pH to 10-11, paper is added
The sodium sulfite for starching the ferric trichloride and 20-30% of black liquor quality 1-2 ‰, constant temperature 2-4 hours at 80-85 DEG C of temperature, then use sulphur
It is 7-9 that acid, which is neutralized to pH,.
Implement above-mentioned technical proposal, which more as possible can come out the lignin extraction in black liquor, react shape
At lignosulfonates, reaction process is simple, and when being used cooperatively with sucrose and starch, and the effect of slow setting is more notable.
Further, the retarder includes following preparation process：Sucrose, starch are added equal to stirrer for mixing
It is even, obtain the first mixture；Double-[γ-(triethoxysilicane) propyl] tetrasulfide and sulfuric acid are continuously added into the first mixture
Aluminium continues to stir evenly, and obtains the second mixture, black liquor is added into the second mixture be uniformly mixed both slow setting
Agent.
Implement above-mentioned technical proposal and continuously add sulfide first after mixing by sugarcane sugar and starch, is eventually adding and changes
Property black liquor, the preparation of retarder can be completed by above step, easy to operate.
Further, the quartz sand powder selects the Modified Quartz Sand powder through hot plasma high-temperature roasting.
Implement above-mentioned technical proposal, primary quartz sand surface usually has the oxide of the metallic elements such as iron, aluminium, causes
The aobvious alkalinity of quartz sand surface, and there are many detrimental effects for later stage application of the alkaline environment to quartz sand, especially in alkalinity
Under the conditions of can influence the hydration rate of cement, cause hydration rate too fast, aquation is too fast, and the heat of hydration has little time to disperse, concrete
It is easy occur crack phenomenon after solidification, so selection is modified quartz sand in the application, reduction alkalinity is brought bad
It influences.
Further, the process of high temperature modified quartz sand powder：Use plasma generator, using nitrogen as discharge gas, gas
Enter plasma generator after controlling flow by spinner flowmeter, after powering on, gas is electric in plasma generator
From, generate high-temperature plasma jet stream, the temperature-averaging of plasma jet outlet is 3500 DEG C, quartz sand and methenamine it is mixed
It closes object and is controlled from charging outlet pipe by valve and enter plasma jet outlet, and is rapid by plasma jet in reactor region
1600 DEG C or more are heated to, treated, and quartz sand enters collective low tank, and is rapidly cooled.
Implement above-mentioned technical proposal, quartz sand heats rapidly after thermal plasma jet, miscellaneous when quartz sand and surface
When the coefficient of expansion of matter is inconsistent, heating process makes quartz sand surface impurity be detached from like thermal shock；In addition, when the temperature of heating connects
When close fusing point, quartz sand forms low-boiling eutectic with metal impurities, and the metal impurities that quartz sand surface adheres to is made to occur
It volatilizees and reduces.The quartz sand crystallization water that high temperature, thermal shock and melting collective effect make plasma roast thoroughly is discharged, and surface is more
Add mellow and full.What can also be disperseed when being mixed in coagulation is more uniform.
Further, the mass ratio of quartz sand powder and methenamine is 1:（0.001-0.005）.
Implement above-mentioned technical proposal, the methenamine of addition enables to the modified effect of quartz sand powder more abundant.
Further, the water-reducing agent selects lignin sulfonic acid sodium salt.
Implement above-mentioned technical proposal, lignin sulfonic acid sodium salt can cooperate between retarder, not play reduction water tightly
The effect of mud dosage, and the function of slump protection of concrete can be improved.
The another goal of the invention of the present invention is to provide a kind of preparation process of ultra-retardation concrete have easy to operate
Advantage.
A kind of preparation process of ultra-retardation concrete, including following preparation process：
Step 1：10-20 parts of water is poured into blender, blender is soaked；
Step 2：Middle sand, rubble are poured into blender, is uniformly mixed, obtains thick batch mixing；
Step 3：Remaining water is added into thick batch mixing, stirs evenly, obtains Solid-liquid mixture；
Step 4：Cement, quartz sand powder, bamboo fibre, retarder, silica flour, lithium powder and water-reducing agent are added into Solid-liquid mixture, stirs
It mixes uniformly mixed.
Implement above-mentioned technical proposal, completes the preparation of concrete through the above steps, it is easy to operate.
In conclusion the invention has the advantages that：
One, on the one hand the retarder in present specification slows down the setting rate of concrete by improving the mobility of mortar, separately
Double-[γ-(triethoxysilicane) propyl] tetrasulfide, aluminum sulfate cooperation bamboo fibre use in one side retarder can enhance
The intensity of concrete so the retarder of present specification can play the function and effect of slow setting, and can enhance concrete
Structural strength；
Two, the modification of spent pulping liquor more as possible can come out the lignin extraction in black liquor, ultimately generate wood
Quality xanthate further increases the effect of slow setting；
Three, the use of Modified Quartz Sand can further slow down the hydration rate of cement, reduce after concrete quickly solidifies
Existing crack phenomenon.
Specific implementation mode
Embodiment one
The component of ultra-retardation concrete：Cement 250kg, middle sand 858kg, rubble 700kg, bamboo fibre 10kg, retarder 8kg, stone
Sand powder 100kg, silica flour 10kg, lithium powder 10kg, lignin sulfonic acid sodium salt 4kg, water 150kg.
The preparation process of ultra-retardation concrete：
Step 1：The water of 15kg is poured into blender, blender is soaked；
Step 2：Middle sand, rubble are poured into blender, is uniformly mixed, obtains thick batch mixing；
Step 3：Remaining water is added into thick batch mixing, stirs evenly, obtains Solid-liquid mixture；
Step 4：Cement, quartz sand powder, bamboo fibre, retarder, silica flour, lithium powder and water-reducing agent are added into Solid-liquid mixture, stirs
It mixes uniformly mixed.
In the present embodiment, specific retarder includes the component of following weight content：Modified pulp black liquor 1.6kg, sucrose
4kg, starch 1.6kg, double-[γ-(triethoxysilicane) propyl] tetrasulfide 0.4kg, aluminum sulfate 0.4kg.
Modified pulp black liquor includes following processing procedure：Using sulphur acid for adjusting pH to 10, and add to the black liquor of 1.6kg
Enter the ferric trichloride of 2g and the sodium sulfite of 320g, the constant temperature 4 hours at 80 DEG C of temperature, then it is 7 to neutralize with sulfuric acid to pH.
Retarder includes following preparation process：Sucrose, starch are added uniform to stirrer for mixing, obtain the first mixing
Object；Double-[γ-(triethoxysilicane) propyl] tetrasulfide and aluminum sulfate are continuously added into the first mixture, and it is equal to continue stirring
It is even, obtain the second mixture, black liquor is added into the second mixture be uniformly mixed both retarder.
Embodiment two
The component of ultra-retardation concrete：Cement 252kg, middle sand 809.7kg, rubble 710kg, bamboo fibre 11kg, retarder
8.1kg, quartz sand powder 105kg, silica flour 20kg, lithium powder 20kg, lignin sulfonic acid sodium salt 4.2kg, water 160kg.
The preparation process of ultra-retardation concrete：
Step 1：The water of 16kg is poured into blender, blender is soaked；
Step 2：Middle sand, rubble are poured into blender, is uniformly mixed, obtains thick batch mixing；
Step 3：Remaining water is added into thick batch mixing, stirs evenly, obtains Solid-liquid mixture；
Step 4：Cement, quartz sand powder, bamboo fibre, retarder, silica flour, lithium powder and water-reducing agent are added into Solid-liquid mixture, stirs
It mixes uniformly mixed.
In the present embodiment, specific retarder includes the component of following weight content：Modified pulp black liquor 2.27kg, sucrose
3.81kg, starch 1.46kg, double-[γ-(triethoxysilicane) propyl] tetrasulfide 0.24kg, aluminum sulfate 0.32kg.
Modified pulp black liquor includes following processing procedure：Using sulphur acid for adjusting pH to 10, and to the black liquor of 2.27kg
The sodium sulfite of the middle ferric trichloride and 450g that 2g is added, the constant temperature 4 hours at 85 DEG C of temperature, then it is 7 to neutralize with sulfuric acid to pH.
Retarder includes following preparation process：Sucrose, starch are added uniform to stirrer for mixing, obtain the first mixing
Object；Double-[γ-(triethoxysilicane) propyl] tetrasulfide and aluminum sulfate are continuously added into the first mixture, and it is equal to continue stirring
It is even, obtain the second mixture, black liquor is added into the second mixture be uniformly mixed both retarder.
Embodiment 3
The component of ultra-retardation concrete：Cement 254kg, middle sand 761.3kg, rubble 720kg, bamboo fibre 12kg, retarder
8.2kg, Modified Quartz Sand powder 110kg, silica flour 30kg, lithium powder 30kg, lignin sulfonic acid sodium salt 4.5kg, water 170kg.
The preparation process of ultra-retardation concrete：
Step 1：The water of 25kg is poured into blender, blender is soaked；
Step 2：Middle sand, rubble are poured into blender, is uniformly mixed, obtains thick batch mixing；
Step 3：Remaining water is added into thick batch mixing, stirs evenly, obtains Solid-liquid mixture；
Step 4：Cement, quartz sand powder, bamboo fibre, retarder, silica flour, lithium powder and water-reducing agent are added into Solid-liquid mixture, stirs
It mixes uniformly mixed.
The process of high temperature modified quartz sand powder：Using plasma generator, using nitrogen as discharge gas, gas passes through rotor
Flowmeter enters plasma generator after controlling flow, and after powering on, gas is ionized in plasma generator, generates high
The temperature-averaging of isothermal plasma jet stream, plasma jet outlet is 3500 DEG C, and the mixture of quartz sand and methenamine passes through
Valve control enters plasma jet outlet from charging outlet pipe, and is heated rapidly to by plasma jet in reactor region
1600 DEG C or more, treated, and quartz sand enters collective low tank, and is rapidly cooled.
Wherein the mass ratio of quartz sand powder and methenamine is 1:0.0025.
In the present embodiment, specific retarder includes the component of following weight content：Modified pulp black liquor 2.79kg, sucrose
3.69kg, starch 1.23kg, double-[γ-(triethoxysilicane) propyl] tetrasulfide 0.08kg, aluminum sulfate 0.41kg.
Modified pulp black liquor includes following processing procedure：Using sulphur acid for adjusting pH to 10, and to the black liquor of 2.79kg
The sodium sulfite of the ferric trichloride and 700g of 6g is added, the constant temperature 3 hours at 85 DEG C of temperature, then it is 7 to neutralize with sulfuric acid to pH.
Retarder includes following preparation process：Sucrose, starch are added uniform to stirrer for mixing, obtain the first mixing
Object；Double-[γ-(triethoxysilicane) propyl] tetrasulfide and aluminum sulfate are continuously added into the first mixture, and it is equal to continue stirring
It is even, obtain the second mixture, black liquor is added into the second mixture be uniformly mixed both retarder.
Embodiment 4
The component of ultra-retardation concrete：Cement 257kg, middle sand 744kg, rubble 740kg, bamboo fibre 11kg, retarder 8.3kg,
Modified Quartz Sand powder 115kg, silica flour 20kg, lithium powder 20kg, lignin sulfonic acid sodium salt 4.7kg, water 180kg.
The preparation process of ultra-retardation concrete：
Step 1：The water of 27kg is poured into blender, blender is soaked；
Step 2：Middle sand, rubble are poured into blender, is uniformly mixed, obtains thick batch mixing；
Step 3：Remaining water is added into thick batch mixing, stirs evenly, obtains Solid-liquid mixture；
Step 4：Cement, quartz sand powder, bamboo fibre, retarder, silica flour, lithium powder and water-reducing agent are added into Solid-liquid mixture, stirs
It mixes uniformly mixed.
In the present embodiment, specific retarder includes the component of following weight content：Modified pulp black liquor 2.91kg, sucrose
3.9kg, starch 1.08kg, double-[γ-(triethoxysilicane) propyl] tetrasulfide 0.33kg, aluminum sulfate 0.08kg.
Modified pulp black liquor includes following processing procedure：Using sulphur acid for adjusting pH to 11, and to the black liquor of 2.91kg
The sodium sulfite of the ferric trichloride and 730g of 6g is added, the constant temperature 3 hours at 85 DEG C of temperature, then it is 8 to neutralize with sulfuric acid to pH.
Retarder includes following preparation process：Sucrose, starch are added uniform to stirrer for mixing, obtain the first mixing
Object；Double-[γ-(triethoxysilicane) propyl] tetrasulfide and aluminum sulfate are continuously added into the first mixture, and it is equal to continue stirring
It is even, obtain the second mixture, black liquor is added into the second mixture be uniformly mixed both retarder.
Embodiment 5
The component of ultra-retardation concrete：Cement 260kg, middle sand 726.5kg, rubble 750kg, bamboo fibre 10kg, retarder
8.5kg, Modified Quartz Sand powder 120kg, silica flour 10kg, lithium powder 10kg, lignin sulfonic acid sodium salt 5kg, water 200kg.
The preparation process of ultra-retardation concrete：
Step 1：The water of 40kg is poured into blender, blender is soaked；
Step 2：Middle sand, rubble are poured into blender, is uniformly mixed, obtains thick batch mixing；
Step 3：Remaining water is added into thick batch mixing, stirs evenly, obtains Solid-liquid mixture；
Step 4：Cement, quartz sand powder, bamboo fibre, retarder, silica flour, lithium powder and water-reducing agent are added into Solid-liquid mixture, stirs
It mixes uniformly mixed.
In the present embodiment, specific retarder includes the component of following weight content：Modified pulp black liquor 3.4kg, sucrose
3.4kg, starch 0.85kg, double-[γ-(triethoxysilicane) propyl] tetrasulfide 0.43kg, aluminum sulfate 0.43kg.
Modified pulp black liquor includes following processing procedure：Using sulphur acid for adjusting pH to 11, and add to the black liquor of 3.4kg
Enter the ferric trichloride of 7g and the sodium sulfite of 1020g, the constant temperature 4 hours at 85 DEG C of temperature, then it is 9 to neutralize with sulfuric acid to pH.
Retarder includes following preparation process：Sucrose, starch are added uniform to stirrer for mixing, obtain the first mixing
Object；Double-[γ-(triethoxysilicane) propyl] tetrasulfide and aluminum sulfate are continuously added into the first mixture, and it is equal to continue stirring
It is even, obtain the second mixture, black liquor is added into the second mixture be uniformly mixed both retarder.
The concrete proportioning of embodiment 1-5 is shown in Table 1, and the proportioning of retarder is shown in Table 2.
The proportioning table of the concrete each component of 1 embodiment 1-5 of table.
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Cement/kg | 250 | 252 | 254 | 257 | 260 |
| Middle sand/kg | 858 | 809.7 | 761.3 | 744 | 726.5 |
| Rubble/kg | 700 | 710 | 720 | 740 | 750 |
| Bamboo fibre/kg | 10 | 11 | 12 | 11 | 10 |
| Retarder/kg | 8 | 8.1 | 8.2 | 8.3 | 8.5 |
| Quartz sand powder/kg | 100 | 105 | 110 | 115 | 120 |
| Silica flour/kg | 10 | 20 | 30 | 20 | 10 |
| Lithium powder/kg | 10 | 20 | 30 | 20 | 10 |
| Water-reducing agent/kg | 4 | 4.2 | 4.5 | 4.7 | 5 |
| Water/kg | 150 | 160 | 170 | 180 | 200 |
The each group distribution ratio table of the retarder of 2 embodiment 1-5 of table.
| Water-reducing agent | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Modified pulp black liquor/kg | 1.6 | 2.27 | 2.79 | 2.91 | 3.40 |
| Sucrose/kg | 4 | 3.81 | 3.69 | 3.90 | 3.40 |
| Starch/kg | 1.6 | 1.46 | 1.23 | 1.08 | 0.85 |
| Double-[γ-(triethoxysilicane) propyl] tetrasulfide/kg | 0.4 | 0.24 | 0.08 | 0.33 | 0.43 |
| Aluminum sulfate/kg | 0.4 | 0.32 | 0.41 | 0.08 | 0.43 |
Experiment detection
1, Slow setting time：According to GB/T 1346-89《Cement normal consistency water consumption, setting time, stability experimental method》It is right
The concrete of embodiment 1-5 is measured.
2,28d compression strength：GB/T 50081-2002《Standard for test methods of mechanical properties of ordinary concrete》To embodiment
Concrete in 1-5 is measured.
The Slow setting time result of the concrete of 3 embodiment 1-5 of table.
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Presetting period/min | 4828 | 4859 | 5059 | 5123 | 5105 |
| Final setting time/min | 6105 | 6153 | 6368 | 6393 | 6327 |
The result of the 28d compression strength of the concrete of the C30 of 4 embodiment 1-5 of table.
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Compression strength/MPa | 32.5 | 33.5 | 33.8 | 34.5 | 34.3 |
It can be derived that by the data of Tables 1 and 2, the intensity and Slow setting time of the concrete of present specification comply with standard
Requirement.
And the experimental result of comparative example 1,2 and embodiment 3-5, it can be to material when selection Modified Quartz Sand in component
The coagulation and intensity of material generate favorable influence.
Selection example 3 is as with reference to embodiment.
Comparative example 1
Comparative example 1 and embodiment 3 difference lies in retarder without containing double-[γ-(triethoxysilicane) propyl] tetrasulfide,
Aluminum sulfate, other are consistent with embodiment 3.
Comparative example 2
Difference lies in the retarder of comparative example 3, and triumphant Jianchang, Beijing to be selected to contain engineering technology Co., Ltd with embodiment 3 for comparative example 2
The super-retarder of production.
Testing inspection
The experimental result of comparative example 1-2 is detected according to the experiment detection method of embodiment 1-5.
The Slow setting time result of the concrete of 5 comparative example 1-2 of table.
| Detection project | Embodiment 3 | Comparative example 1 | Comparative example 2 |
| Presetting period/min | 5059 | 5023 | 4805 |
| Final setting time/min | 6368 | 6193 | 5827 |
Referring to the experimental data of table 5.The experimental data of comparative example 3 and comparative example 1, can be derived that in retarder it is double-
The addition of [γ-(triethoxysilicane) propyl] tetrasulfide, aluminum sulfate can impact the Slow setting time of coagulation such as, specifically
Applicant can speculate, between double-[γ-(triethoxysilicane) propyl] tetrasulfide, aluminum sulfate and sucrose, starch there may be
The function and effect of cooperation can improve the mobility of concrete, further improve the retarding performance of concrete.
The experimental result for comparing comparative example 1 and comparative example 2 can significantly obtain the slow of the retarder in present specification
Solidifying effect is more excellent.
The result of the 28d compression strength of the concrete of the C30 of 6 comparative example 1-5 of table.
| Detection project | Embodiment 3 | Comparative example 1 | Comparative example 2 |
| Compression strength/MPa | 33.8 | 32.5 | 32.8 |
Referring to the experimental data of table 6, the experimental data of comparative example 3 and comparative example 1, can be derived that it is double in retarder-
The addition of [γ-(triethoxysilicane) propyl] tetrasulfide, aluminum sulfate, can also have an impact the intensity of concrete, specifically
The compression strength of concrete can be enhanced by being presented as, so applicant can reasonably derive double-[γ-(triethoxysilicane)
Propyl] tetrasulfide, aluminum sulfate can also improve with sucrose, starch cooperation while slow setting the intensity of concrete.Again
The experimental data of comparative example 1 and comparative example 2 is compared, further proves that the effect of the retarder of present specification is more excellent.
Claims (10)
1. a kind of ultra-retardation concrete, which is characterized in that including following component, cement, middle sand, rubble, bamboo fibre, retarder,
Quartz sand powder, silica flour, lithium powder, water-reducing agent, water；
The retarder includes modified pulp black liquor, sucrose, starch, double-[γ-(triethoxysilicane) propyl] tetrasulfide, sulphur
Sour aluminium.
2. a kind of ultra-retardation concrete according to claim 1, which is characterized in that the ultra-retardation concrete includes as follows
The component of parts by weight, 250-260 parts of cement, sand 725-860 parts middle, 700-750 parts of rubble, 10-12 parts of bamboo fibre, retarder
8-8.5 parts, 100-120 parts of quartz sand powder, 10-30 parts of silica flour, 10-30 parts of lithium powder, 4-5 parts of water-reducing agent, 150-200 parts of water.
3. a kind of ultra-retardation concrete according to claim 2, which is characterized in that the retarder includes following weight hundred
Divide the component of content, modified pulp black liquor 20-40%, sucrose 40-50%, starch 10-20%, double-[γ-(triethoxysilicane) third
Base] tetrasulfide 1-5%, aluminum sulfate 1-5%.
4. a kind of ultra-retardation concrete according to claim 3, which is characterized in that the modified pulp black liquor includes as follows
Processing procedure：Using sulphur acid for adjusting pH to 10-11, the sulfurous of the ferric trichloride and 20-30% of black liquor quality 1-2 ‰ is added
Sour sodium, constant temperature 2-4 hours at 80-85 DEG C of temperature, then it is 7-9 to neutralize with sulfuric acid to pH.
5. a kind of ultra-retardation concrete according to claim 4, which is characterized in that the retarder includes following preparation
Process：Sucrose, starch are added uniform to stirrer for mixing, obtain the first mixture；Continuously added into the first mixture it is double-
[γ-(triethoxysilicane) propyl] tetrasulfide and aluminum sulfate, continue to stir evenly, obtain the second mixture, by black liquor plus
Enter into the second mixture to be uniformly mixed and both obtains retarder.
6. a kind of ultra-retardation concrete according to claim 1, which is characterized in that quartz sand powder selection through heat it is equal from
The Modified Quartz Sand powder of daughter high-temperature roasting.
7. a kind of ultra-retardation concrete according to claim 6, which is characterized in that the process of high temperature modified quartz sand powder：
Using plasma generator, using nitrogen as discharge gas, gas enters plasma after controlling flow by spinner flowmeter
Device, after powering on, gas is ionized in plasma generator, generates high-temperature plasma jet stream, plasma jet outlet
Temperature-averaging be 3500 DEG C, the mixture of quartz sand and methenamine, which is controlled by valve from charging outlet pipe, enters plasma
Jet exit, and 1600 DEG C or more are heated rapidly to by plasma jet in reactor region, under quartz sand entrance that treated
Portion's collecting tank, and be rapidly cooled.
8. a kind of ultra-retardation concrete according to claim 7, which is characterized in that the quality of quartz sand powder and methenamine
Than being 1:（0.001-0.005）.
9. a kind of ultra-retardation concrete according to claim 1, which is characterized in that the water-reducing agent selects lignin sulfonic acid
Sodium salt.
10. the preparation process of ultra-retardation concrete as described in any one of claims 1-9, including following preparation process：
Step 1：10-20 parts of water is poured into blender, blender is soaked；
Step 2：Middle sand, rubble are poured into blender, is uniformly mixed, obtains thick batch mixing；
Step 3：Remaining water is added into thick batch mixing, stirs evenly, obtains Solid-liquid mixture；
Step 4：Cement, quartz sand powder, bamboo fibre, retarder, silica flour, lithium powder and water-reducing agent are added into Solid-liquid mixture, stirs
It mixes uniformly mixed.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437696A (en) * | 2018-12-14 | 2019-03-08 | 中铁四局集团第二工程有限公司 | Super-retarding concrete and preparation method thereof |
| CN111021338A (en) * | 2019-12-30 | 2020-04-17 | 深圳市市政设计研究院有限公司 | Occlusive pile and construction method thereof |
| CN112191319A (en) * | 2020-09-30 | 2021-01-08 | 上海顺多防水工程有限公司 | Super-retarding concrete and preparation method thereof |
| CN112645624A (en) * | 2021-01-10 | 2021-04-13 | 广州至城建筑材料科技有限公司 | Concrete retarder and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730425A (en) * | 2004-08-04 | 2006-02-08 | 黄波 | Concrete additive of herb lignosulfonate |
| US20080017077A1 (en) * | 2006-07-21 | 2008-01-24 | Abbate William V | Slag concrete manufactured aggregate |
| CN104743995A (en) * | 2015-03-19 | 2015-07-01 | 中国水利水电第七工程局有限公司 | High-strength concrete cementitious composition and high-strength concrete thereof |
| CN107151115A (en) * | 2017-04-28 | 2017-09-12 | 成都市德容建筑劳务有限公司 | Strong concrete |
| CN108033731A (en) * | 2017-12-29 | 2018-05-15 | 成都精准混凝土有限公司 | Decorate granolithic concrete and its preparation process |
| CN108147752A (en) * | 2018-02-07 | 2018-06-12 | 成都宏基建材股份有限公司 | A kind of ultra-retardation concrete |
| CN108178561A (en) * | 2017-12-29 | 2018-06-19 | 成都精准混凝土有限公司 | Parking lot terrace concrete and its preparation process |
-
2018
- 2018-07-02 CN CN201810708515.5A patent/CN108623229A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730425A (en) * | 2004-08-04 | 2006-02-08 | 黄波 | Concrete additive of herb lignosulfonate |
| US20080017077A1 (en) * | 2006-07-21 | 2008-01-24 | Abbate William V | Slag concrete manufactured aggregate |
| CN104743995A (en) * | 2015-03-19 | 2015-07-01 | 中国水利水电第七工程局有限公司 | High-strength concrete cementitious composition and high-strength concrete thereof |
| CN107151115A (en) * | 2017-04-28 | 2017-09-12 | 成都市德容建筑劳务有限公司 | Strong concrete |
| CN108033731A (en) * | 2017-12-29 | 2018-05-15 | 成都精准混凝土有限公司 | Decorate granolithic concrete and its preparation process |
| CN108178561A (en) * | 2017-12-29 | 2018-06-19 | 成都精准混凝土有限公司 | Parking lot terrace concrete and its preparation process |
| CN108147752A (en) * | 2018-02-07 | 2018-06-12 | 成都宏基建材股份有限公司 | A kind of ultra-retardation concrete |
Non-Patent Citations (1)
| Title |
|---|
| 雷雳光等，: "热等离子体焙烧石英砂的铸造特性", 《铸造技术》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437696A (en) * | 2018-12-14 | 2019-03-08 | 中铁四局集团第二工程有限公司 | Super-retarding concrete and preparation method thereof |
| CN109437696B (en) * | 2018-12-14 | 2021-06-04 | 中铁四局集团第二工程有限公司 | Super-retarding concrete and preparation method thereof |
| CN111021338A (en) * | 2019-12-30 | 2020-04-17 | 深圳市市政设计研究院有限公司 | Occlusive pile and construction method thereof |
| CN112191319A (en) * | 2020-09-30 | 2021-01-08 | 上海顺多防水工程有限公司 | Super-retarding concrete and preparation method thereof |
| CN112645624A (en) * | 2021-01-10 | 2021-04-13 | 广州至城建筑材料科技有限公司 | Concrete retarder and preparation method thereof |
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Application publication date: 20181009 |