CN103193425B - High strength pumping anti-crack concrete prepared by slag aggregate and production method thereof - Google Patents
High strength pumping anti-crack concrete prepared by slag aggregate and production method thereof Download PDFInfo
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- CN103193425B CN103193425B CN201310121588.1A CN201310121588A CN103193425B CN 103193425 B CN103193425 B CN 103193425B CN 201310121588 A CN201310121588 A CN 201310121588A CN 103193425 B CN103193425 B CN 103193425B
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Abstract
High strength pumping anti-crack concrete prepared by slag aggregate and production method thereof, utilize mineral waste effectively to dissolve, not only can meet the requirements of engineer applied, and be conducive to promoting concrete weather resistance.High strength pumping anti-crack concrete prepared by slag aggregate of the present invention is made up of the raw material of following weight part: water 140 ~ 175 weight part, gelatinous material 490 ~ 550 weight part, coarse aggregate 1000 ~ 1200 weight part, fine aggregate 600 ~ 800 weight part, interior curing agent 10 ~ 20 weight part, the quality volume of water reducer is 1.0 ~ 2.0% of gelling material total mass; Wherein, gelatinous material is made up of the cement of 430 ~ 460 weight parts and the mineral admixture of 60 ~ 90 weight parts; Coarse aggregate is rubble; Fine aggregate is high-titanium dry slag sand; Interior curing agent is conserving material in starch-grafted negatively charged ion-non-ionic group.Its production method step is as follows: a, high-titanium dry slag sand, rubble are mixed with gelling material, stirs evenly; B, add part water, stir evenly; C, remaining water and raw material to be added, stir evenly, to obtain final product.Concrete physical of the present invention is excellent, and endurance quality is good, is well positioned to meet engine request.
Description
Technical field
The present invention relates to concrete and preparation method thereof, belong to concrete field.
Background technology
The a kind of of the melted gangue cooling formation produced when high-titanium dry slag is smelting vanadium-titanium magnetite by blast furnace is main stone material by the mineral such as titanaugite, uhligite, has the features such as porous, high-strength, chemical stability is good.At present, domestic and international high titanium blast furnace slag utilize technique means, only can meet the demand of common civil buildings engineering, not have the bibliographical information utilizing it to prepare the method for High Performance Concrete Used for Bridges.Adopting high-titanium dry slag sand to gather materials as thickness, preparing that high performance concrete is applied to bridge, motorway also exists following point: first, high-titanium dry slag sand grating is poor, and dust content is higher, surface irregularity, is unfavorable for for preparing high-strength concrete.Secondly, high-titanium dry slag sand is a kind of porous material, large compared with common river sand apparent density, and surfaceness is larger, use is done due to what be subject to pumping pressure in concrete pumping process, high-titanium dry slag sand very easily adsorbs admixture and absorption portion moisture, thus affects concrete work energy, is unfavorable for pump concrete pumping construction.If when concrete initial slump is excessive, under pumping pressure effect, in high-titanium dry slag sand hole, can portion of water be disengaged, cause concrete easily to occur taking off end phenomenon, be unfavorable for pump concrete pumping construction equally.Therefore, at present high-titanium dry slag sand is applied in the application of High Strength Pump Concrete and also there is certain problem.Climb steel and be faced with the high-titanium dry slag situation that pile up like a mountain, be badly in need of a kind of method of efficiency utilization Titanium slag sand; Meanwhile, the construction of Panzhihua City need consume a large amount of sand every year, and owing to being located in Upper Yangtze River, Aggregate is deficient, and natural sand cost is quite high, and the excessive fried stone that cuts into a mountain will cause destroying vegetation.Therefore, utilize high-titanium dry slag sand to prepare High Strength Pump Concrete, be conducive to socioeconomic Sustainable development, to saving natural resources, reduce engineering cost, the aspect such as to preserve the ecological environment all has great importance.
Summary of the invention
The technical problem to be solved in the present invention is to provide High strength pumping anti-crack concrete and production method thereof prepared by a kind of slag aggregate, utilizes mineral waste, not only can meet the requirements of engineer applied, and be conducive to promoting concrete weather resistance effectively to dissolve.
High strength pumping anti-crack concrete prepared by slag aggregate of the present invention, is made up of the raw material of following weight part:
Water 140 ~ 175 weight part,
Gelatinous material 490 ~ 550 weight part,
Coarse aggregate 1000 ~ 1200 weight part,
Fine aggregate 600 ~ 800 weight part,
Interior curing agent 10 ~ 20 weight part,
The quality volume of water reducer is 1.0 ~ 2.0% of gelling material quality;
Wherein, preferably, gelatinous material is made up of the cement of 430 ~ 460 weight parts and the mineral admixture of 60 ~ 90 weight parts; Coarse aggregate is rubble; Fine aggregate is high-titanium dry slag sand; Interior curing agent is conserving material in starch-grafted negatively charged ion-non-ionic group.
Further, in order to improve concrete water-reducing effect, described water reducer is preferably polycarboxylic acid series high efficiency water reducing agent.Preferably, polycarboxylic acid series high efficiency water reducing agent by organic silicone oil defoamer 5 ~ 10wt%, colophonium pyrolytic polymer air entrapment agent 1 ~ 2wt%, ether of cellulose tackifier 2.5 ~ 5wt%, reduce component 7.5 ~ 15wt%, be composited with polycarboxylic acid series mother liquor; Reduce component to be made up of according to mass ratio 1:1 ~ 1:2 the lower alcohol epoxy compounds of C1 ~ C3 and alkyl polyoxyethylene ether.
Above-mentioned high-efficiency water-reducing agent of poly-carboxylic acid aims at the present invention's development.Due to needs that are high-strength and pumping technology, under very controlled use of water volume prerequisite, in order to meet suitable Slurry transport and suitable mobility, meanwhile, have early strength good, shrink low, that later strength is good performance.Invent one by different components in adjustment admixture and aim at high-titanium dry slag sand High Strength Pump Concrete admixture.Because the specific surface area of high-titanium dry slag sand is comparatively large, friction resistance is large on the one hand, and comparatively serious to admixture absorption on the other hand, cause concrete original operating state not good, divergence is on the low side, cannot meet the requirement of concrete construction.For this reason, the present invention is by a certain amount of bleed component containing anion surfactant of admixture, make concrete in the process of mixing and stirring, produce a large amount of identical charges and the equally distributed microbubble of energy, these microbubbles play " ball " effect, effectively improve concrete initial extension degree.The membership that adds of concrete admixture introduces air pocket at inside concrete, not only bad for the concrete original state of improvement, and is harmful to concrete physical and mechanical property and long durability.Destroy by introducing a kind of interfacial state that can change system or suppress the material of foam to eliminate air pocket.This defoamer has higher surfactivity, can form new surface film or change original surface film, reducing the intensity of foam, and then the effective growing amount reducing air pocket in concrete.For avoiding concrete generation of plugging phenomenon because of segregation in pumping procedure, in admixture, a certain amount of increasing with water conservation and thickening power of admixture sticks component, make its high polymer long chain can at cement granules, stable spatial flexible network structure is formed between cement and aggregate, improve the cohesion of fresh concrete, and chemical group such as the hydroxyl contained by it becomes hydrogen bond with the Sauerstoffatom on ehter bond with associated water molecules, free-water is made to become Bound moisture, during to ensure hydrated cementitious, there is enough water, therefore make cement slurry viscosity increase, effectively avoid the generation of the plugging phenomenon because of segregation in pumping procedure.For reducing concrete shrinkage, in admixture, increase one make that concrete pore solution surface tension is significantly reduced reduces component, fundamentally reduce concrete and produce self-constriction, hole refinement, obvious Original Cracks is not had to produce, concrete structure is finer and close, improves concrete resistance to cleavage, reduces to shrink.Organic silicone oil 5 ~ 10% selected by defoamer, air entrapment agent selects colophonium pyrolytic polymer 1 ~ 2%, ether of cellulose 2.5 ~ 5% selected by tackifier, reduce component selects the epoxy compounds of lower alcohol and alkyl polyoxyethylene ether to be obtained by mixing.By adjusting above each composition and account for the content of additional dosage and water reducer compound and the one obtained being applicable to the concrete admixture of high-titanium dry slag sand.
Wherein, described cement is preferably P.O.52.5 ordinary Portland cement.
Further, described rubble is preferably 5 ~ 25mm continuous grading, and tap density is preferably 1500 ~ 1700kg/m
3, water-intake rate is preferably 0.1 ~ 1.5%, and crush values index is preferably 6 ~ 16%;
Further, described high-titanium dry slag sand fineness modulus is preferably 2.5 ~ 3.2, and apparent density is 2600 ~ 3300kg/m
3.Further, in starch-grafted negatively charged ion-non-ionic group the structural formula of conserving material as shown in formula I
Wherein, in the starch-grafted negatively charged ion-non-ionic group shown in formula I, the preparation method of conserving material is as follows:
A, starch pasting: the distilled water kaolin of the tapioca (flour) of 0.15 weight part and 0.04 weight part being dissolved in 3 weight parts, temperature is 70 ~ 80 DEG C, stirs evenly, gelatinization 30min, obtains solution 1;
B, free radical cause: take the ceric ammonium nitrate of 0.0012 weight part and the ammonium persulphate of 0.0108 weight part, be dissolved in the distilled water of 2 weight parts, temperature is 60 ~ 70 DEG C, stirs evenly, and adds a step and obtains in solution 1, and reaction 10min, obtains solution 2;
C, graft copolymerization: take the monomeric acrylamide of 0.416 weight part, monomer 2-acrylamido-2 methyl propane sulfonic acid of 0.132 weight part and the linking agent of 0.0045 weight part, be dissolved in the distilled water of 3 weight parts, temperature is 60 ~ 70 DEG C, stir evenly, join in solution 2, be obtained by reacting solution 3, solution 3 is colorless gel shape material or contains gel strong solution; Wherein, the time for adding of monomeric acrylamide and monomer 2-acrylamido-2 methyl propane sulfonic acid controls in 2 ~ 4h;
D, hydrolysis: the distilled water 0.13 ~ 0.14 weight part NaOH being dissolved in 4 weight parts, join in solution 3, and hydrolysis 30min obtains crude product;
E, dehydration, washing: crude product is dewatered, then soak 6 ~ 12h with ethanol or acetone to head product, washing, obtains pure products;
F, drying, pulverizing: pure products step e obtained dry, pulverize, and to obtain final product.
By a kind of High hydrophilous resin material containing a large amount of strong hydrophilicity group and in three-dimensional netted crosslinking structure of admixture as interior maintenance component, the chemical bond between polymer molecule and water molecules is utilized to absorb and preserve moisture, form the care environments continuing to supply water at inside concrete, important effect is played to the development of concrete strength.Interior curing agent be independent research starch-grafted Anionic-nonionic group in conserving material, as shown in formula I, there is good water suction-release water function, interior maintenance action played to concrete.High water-retaining capacity under this interior curing agent alkaline environment, because anionic monomers and non-ionic monomer have high-hydrophilic-SO
3h and-NH
2determined.-SO
3h has fine tolerance to divalence, Tricationic, and-NH
2there is good stability to hydrolysis, antiacid alkali and thermostability ,-SO
3h/-NH
2the introducing of middle nonionic group has regulated and controled the electric density on main chain preferably, reduces the susceptibility of macromolecule network at basic solution, thus improves the receptivity of interior conserving material to basic solution.The front high polymer long chain of water suction is mutually drawn close tangle up and is cross-linked to each other in reticulated structure, macromolecule network is the unionized one-tenth ion pair of solid network bundle, hydrophilic radical and the water of water molecules and effect when meeting water, high score subnet bundle is made to expand the inside and outside ionic concn of generation net poor, thus generation osmotic pressure water molecules permeates under osmotic pressure effect in web frame, thus water suction.After non-ionic degree improves, electrostatic repulsion greatly reduces, and network becomes and more easily shrinks, and full hydrogel is subject to the effect of heat and pressure simultaneously, and it releases water acceleration, release the water yield also strengthens.Thus ensure that its water suction-Characteristic of releasing moisture, maintenance action is preferably played to concrete.
The production method of High strength pumping anti-crack concrete prepared by slag aggregate of the present invention, comprises the steps:
A, high-titanium dry slag sand, rubble to be mixed with gelling material, and stir evenly; And before feeding intake, the water ratio of high-titanium dry slag sand is 7 ~ 10%;
B, add part water, stir evenly;
C, remaining water and raw material to be added, stir evenly, to obtain final product.
Wherein, a step makes high-titanium dry slag sand and gelling material mix fully and is blocked its surface pore, gelling material filling part hole, to reduce the absorption of slag sand to admixture.Before feeding intake, the water ratio of high-titanium dry slag sand is 7% ~ 10%.As preferred version, high-titanium dry slag sand, before feeding intake, first carries out full water treatment, and high-titanium dry slag sand being placed in water reservoir in 24 hours carries out full water treatment to it at least in advance, makes high-titanium dry slag sand fully wetting.Water in water reservoir is put only by 4 ~ 5 hours before mixing concrete, allows the free dehydration of high-titanium dry slag sand.High-titanium dry slag sand forklift in sand is piled by mixing concrete for first 1 hour mixes, and at least gets the water ratio of three representative positions survey sand heap medium sands in sand heap half an hour and average to ensure its water ratio before mixing concrete.B step adds part water and stirs, and slurry is contacted with high-titanium dry slag sand fully, reduces because high-titanium dry slag sand specific surface area is comparatively large, reduces the absorption to admixture, play water shutoff effect simultaneously; Remaining water and raw material are finally added stirrer mix by step c, reach the effect that in concrete, free water is fully combined with gelling material, avoid the generation causing the not good situation of concrete original state because churning time is not enough, improve the homogeneity of concrete mix simultaneously, to concrete physical and mechanical property and long durability all helpful, preferably, mix total used time 10s ~ 30s more than common river sand concrete.
High strength pumping anti-crack concrete prepared by slag aggregate of the present invention can reach following performance: strength grade C65, the slump 18 ~ 22cm, chloride-penetration resistance coefficient C65<1.0 × 10
-12, 360d Creep Coefficient < 2.0; Freeze proof grade C65 > F300; Resisting erosion of sulfate coefficient C65 > 0.9, good physical properties, endurance quality is good, has the performance such as High strength pumping and cracking resistance, can well engineering demands.
High-titanium dry slag sand is applied in concrete as fine aggregate by the present invention, meets the requirements of engineer applied, and is conducive to the lifting of concrete weather resistance, has broad application prospects in the engineerings such as road, bridge and tunnel.And be conducive to socioeconomic Sustainable development, to saving natural resources, reduce engineering cost, protection of the environment etc. all have great importance.
Embodiment
Embodiment 1
Raw material is chosen according to the proportioning raw materials in table 1, by high-titanium dry slag sand, rubble and gelling material dry mixing, high-titanium dry slag sand is allowed to mix fully with gelling material, add part water again to stir, slurry is contacted with high-titanium dry slag sand fully, finally remaining part water and whole admixture are added stirrer mix, to obtain final product.Its serviceability and mechanical performance data list in table 5 and table 6.
The proportioning raw materials of High strength pumping anti-crack concrete prepared by table 1 slag aggregate
Wherein, flyash density 0.8g/cm
3~ 1.1g/cm
3.Water reducer is polycarboxylic acid series high efficiency water reducing agent.Cement is ordinary Portland cement P.O.52.5; Fine aggregate is high-titanium dry slag sand, and apparent density is 2600 ~ 3300kg/m
3; Coarse aggregate is common lime rock rubble, 5 ~ 25mm continuous grading, tap density 1500 ~ 1700kg/m
3.
Embodiment 2
Raw material is chosen according to the proportioning raw materials in table 2, by high-titanium dry slag sand, rubble and gelling material dry mixing, high-titanium dry slag sand is allowed to mix fully with gelling material, add part water again to stir, slurry is contacted with high-titanium dry slag sand fully, finally remaining part water and whole admixture are added stirrer mix, to obtain final product.Its serviceability and mechanical performance data list in table 5 and table 6.
The proportioning raw materials of High strength pumping anti-crack concrete prepared by table 2 slag aggregate
Wherein, cement is ordinary Portland cement P.O.52.5; Fine aggregate is high-titanium dry slag sand, and apparent density is 2600 ~ 3300kg/m
3; Coarse aggregate is common lime rock rubble, 5 ~ 25mm continuous grading, tap density 1500 ~ 1700kg/m
3.
Embodiment 3
Raw material is chosen according to the proportioning raw materials in table 3, by high-titanium dry slag sand, rubble and gelling material dry mixing, high-titanium dry slag sand is allowed to mix fully with gelling material, add part water again to stir, slurry is contacted with high-titanium dry slag sand fully, finally remaining part water and whole admixture are added stirrer mix, to obtain final product.Its serviceability and mechanical performance data list in table 5 and table 6.
The proportioning raw materials of High strength pumping anti-crack concrete prepared by table 3 slag aggregate
Wherein, cement is ordinary Portland cement P.O.52.5; Fine aggregate is high-titanium dry slag sand, and apparent density is 2600 ~ 3300kg/m
3; Described coarse aggregate is common lime rock rubble, 5 ~ 25mm continuous grading, tap density 1500 ~ 1700kg/m
3.
Embodiment 4
Raw material is chosen according to the proportioning raw materials in table 4, by high-titanium dry slag sand, rubble and gelling material dry mixing, high-titanium dry slag sand is allowed to mix fully with gelling material, add part water again to stir, slurry is contacted with high-titanium dry slag sand fully, finally remaining part water and whole admixture are added stirrer mix, to obtain final product.Its serviceability and mechanical performance data list in table 5 and table 6.
The proportioning raw materials of High strength pumping anti-crack concrete prepared by table 4 slag aggregate
Wherein, cement is ordinary Portland cement P.O.52.5; Fine aggregate is high-titanium dry slag sand, and apparent density is 2600 ~ 3300kg/m
3; Coarse aggregate is common lime rock rubble, 5 ~ 25mm continuous grading, tap density 1500 ~ 1700kg/m
3.
The concrete technical indicator that table 5 embodiment 1 ~ 4 is obtained
| Embodiment | The slump (mm) | Divergence (mm) | 7d/28d ultimate compression strength/Mpa | 7d/28d folding strength/Mpa |
| 1 | 220 | 530 | 61.3/73.5 | 5.4/6.6 |
| 2 | 210 | 500 | 63.6/74.2 | 5.5/6.8 |
| 3 | 200 | 520 | 64.8/77.5 | 5.7/6.9 |
| 4 | 210 | 520 | 62.5/75.1 | 5.6/6.7 |
Upper table illustrates, the physical properties of High strength pumping anti-crack concrete prepared by slag aggregate of the present invention is good, and homogeneity is high, has excellent serviceability.
The obtained concrete endurance quality technical indicator of table 6 embodiment 1 ~ 4
Upper table illustrates, High strength pumping anti-crack concrete prepared by slag aggregate of the present invention has good endurance quality.
Each concrete raw material cited by the present invention, and the bound of each raw material, interval value can realize the present invention, do not enumerate embodiment at this.
Claims (27)
1. the High strength pumping anti-crack concrete prepared of slag aggregate, is characterized in that, be made up of the raw material of following weight part:
The quality volume of water reducer is 1.0 ~ 2.0% of gelling material quality;
Wherein, described gelatinous material is made up of the cement of 430 ~ 460 weight parts and the mineral admixture of 60 ~ 90 weight parts; Described coarse aggregate is rubble; Described fine aggregate is high-titanium dry slag sand; Interior curing agent is conserving material in starch-grafted negatively charged ion-non-ionic group.
2. the High strength pumping anti-crack concrete prepared of slag aggregate according to claim 1, is characterized in that: described water reducer is polycarboxylic acid series high efficiency water reducing agent.
3. the High strength pumping anti-crack concrete prepared of slag aggregate according to claim 2, it is characterized in that: described polycarboxylic acid series high efficiency water reducing agent is composed of the following components: organic silicone oil defoamer 5 ~ 10wt%, colophonium pyrolytic polymer air entrapment agent 1 ~ 2wt%, ether of cellulose tackifier 2.5 ~ 5wt%, reduce component 7.5 ~ 15wt%, be composited with polycarboxylic acid series mother liquor; Described component of reducing is made up of according to mass ratio 1:1 ~ 1:2 the lower alcohol epoxy compounds of C1 ~ C3 and alkyl polyoxyethylene ether.
4. High strength pumping anti-crack concrete prepared by the slag aggregate according to any one of claims 1 to 3, is characterized in that: described cement is P.O.52.5 ordinary Portland cement.
5. High strength pumping anti-crack concrete prepared by the slag aggregate according to any one of claims 1 to 3, is characterized in that: described rubble is 5 ~ 25mm continuous grading, and tap density is 1500 ~ 1700kg/m
3, water-intake rate is 0.1 ~ 1.5%, and crush values index is 6 ~ 16%.
6. the High strength pumping anti-crack concrete prepared of slag aggregate according to claim 4, it is characterized in that: described rubble is 5 ~ 25mm continuous grading, tap density is 1500 ~ 1700kg/m
3, water-intake rate is 0.1 ~ 1.5%, and crush values index is 6 ~ 16%.
7. High strength pumping anti-crack concrete prepared by the slag aggregate according to any one of claims 1 to 3, is characterized in that: described high-titanium dry slag sand fineness modulus is 2.5 ~ 3.2, and apparent density is 2600 ~ 3300kg/m
3.
8. the High strength pumping anti-crack concrete prepared of slag aggregate according to claim 4, it is characterized in that: described high-titanium dry slag sand fineness modulus is 2.5 ~ 3.2, apparent density is 2600 ~ 3300kg/m
3.
9. the High strength pumping anti-crack concrete prepared of slag aggregate according to claim 5, it is characterized in that: described high-titanium dry slag sand fineness modulus is 2.5 ~ 3.2, apparent density is 2600 ~ 3300kg/m
3.
10. the High strength pumping anti-crack concrete prepared of slag aggregate according to claim 6, it is characterized in that: described high-titanium dry slag sand fineness modulus is 2.5 ~ 3.2, apparent density is 2600 ~ 3300kg/m
3.
High strength pumping anti-crack concrete prepared by 11. slag aggregate according to any one of claims 1 to 3, it is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material structure is as shown in formula I:
High strength pumping anti-crack concrete prepared by 12. slag aggregate according to claim 4, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material structure is as shown in formula I:
High strength pumping anti-crack concrete prepared by 13. slag aggregate according to claim 5, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material structure is as shown in formula I:
High strength pumping anti-crack concrete prepared by 14. slag aggregate according to claim 6, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material structure is as shown in formula I:
High strength pumping anti-crack concrete prepared by 15. slag aggregate according to claim 7, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material structure is as shown in formula I:
High strength pumping anti-crack concrete prepared by 16. slag aggregate according to claim 8, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material structure is as shown in formula I:
High strength pumping anti-crack concrete prepared by 17. slag aggregate according to claim 9, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material structure is as shown in formula I:
High strength pumping anti-crack concrete prepared by 18. slag aggregate according to claim 10, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material structure is as shown in formula I:
High strength pumping anti-crack concrete prepared by 19. slag aggregate according to claim 11, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material preparation method is as follows:
A, starch pasting: the distilled water kaolin of the tapioca (flour) of 0.15 weight part and 0.04 weight part being dissolved in 3 weight parts, temperature is 70 ~ 80 DEG C, stirs evenly, gelatinization 30min, obtains solution 1;
B, free radical cause: take the ceric ammonium nitrate of 0.0012 weight part and the ammonium persulphate of 0.0108 weight part, be dissolved in the distilled water of 2 weight parts, temperature is 60 ~ 70 DEG C, stirs evenly, and adds a step and obtains in solution 1, and reaction 10min, obtains solution 2;
C, graft copolymerization: take the monomeric acrylamide of 0.416 weight part, monomer 2-acrylamido-2 methyl propane sulfonic acid of 0.132 weight part and the linking agent of 0.0045 weight part, be dissolved in the distilled water of 3 weight parts, temperature is 60 ~ 70 DEG C, stir evenly, and join in solution 2, be obtained by reacting solution 3, solution 3 is colorless gel shape material or contains gel strong solution; Wherein, the time for adding of monomeric acrylamide and monomer 2-acrylamido-2 methyl propane sulfonic acid controls in 2 ~ 4h;
D, hydrolysis: the distilled water NaOH of 0.13 ~ 0.14 weight part being dissolved in 4 weight parts, join in solution 3, and hydrolysis 30min obtains crude product;
E, dehydration, washing: crude product is dewatered, then soak 6 ~ 12h with ethanol or acetone to head product, washing, obtains pure products;
F, drying, pulverizing: pure products step e obtained dry, pulverize, and to obtain final product.
High strength pumping anti-crack concrete prepared by 20. slag aggregate according to claim 12, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material preparation method is as follows:
A, starch pasting: the distilled water kaolin of the tapioca (flour) of 0.15 weight part and 0.04 weight part being dissolved in 3 weight parts, temperature is 70 ~ 80 DEG C, stirs evenly, gelatinization 30min, obtains solution 1;
B, free radical cause: take the ceric ammonium nitrate of 0.0012 weight part and the ammonium persulphate of 0.0108 weight part, be dissolved in the distilled water of 2 weight parts, temperature is 60 ~ 70 DEG C, stirs evenly, and adds a step and obtains in solution 1, and reaction 10min, obtains solution 2;
C, graft copolymerization: take the monomeric acrylamide of 0.416 weight part, monomer 2-acrylamido-2 methyl propane sulfonic acid of 0.132 weight part and the linking agent of 0.0045 weight part, be dissolved in the distilled water of 3 weight parts, temperature is 60 ~ 70 DEG C, stir evenly, and join in solution 2, be obtained by reacting solution 3, solution 3 is colorless gel shape material or contains gel strong solution; Wherein, the time for adding of monomeric acrylamide and monomer 2-acrylamido-2 methyl propane sulfonic acid controls in 2 ~ 4h;
D, hydrolysis: the distilled water NaOH of 0.13 ~ 0.14 weight part being dissolved in 4 weight parts, join in solution 3, and hydrolysis 30min obtains crude product;
E, dehydration, washing: crude product is dewatered, then soak 6 ~ 12h with ethanol or acetone to head product, washing, obtains pure products;
F, drying, pulverizing: pure products step e obtained dry, pulverize, and to obtain final product.
High strength pumping anti-crack concrete prepared by 21. slag aggregate according to claim 13, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material preparation method is as follows:
A, starch pasting: the distilled water kaolin of the tapioca (flour) of 0.15 weight part and 0.04 weight part being dissolved in 3 weight parts, temperature is 70 ~ 80 DEG C, stirs evenly, gelatinization 30min, obtains solution 1;
B, free radical cause: take the ceric ammonium nitrate of 0.0012 weight part and the ammonium persulphate of 0.0108 weight part, be dissolved in the distilled water of 2 weight parts, temperature is 60 ~ 70 DEG C, stirs evenly, and adds a step and obtains in solution 1, and reaction 10min, obtains solution 2;
C, graft copolymerization: take the monomeric acrylamide of 0.416 weight part, monomer 2-acrylamido-2 methyl propane sulfonic acid of 0.132 weight part and the linking agent of 0.0045 weight part, be dissolved in the distilled water of 3 weight parts, temperature is 60 ~ 70 DEG C, stir evenly, and join in solution 2, be obtained by reacting solution 3, solution 3 is colorless gel shape material or contains gel strong solution; Wherein, the time for adding of monomeric acrylamide and monomer 2-acrylamido-2 methyl propane sulfonic acid controls in 2 ~ 4h;
D, hydrolysis: the distilled water NaOH of 0.13 ~ 0.14 weight part being dissolved in 4 weight parts, join in solution 3, and hydrolysis 30min obtains crude product;
E, dehydration, washing: crude product is dewatered, then soak 6 ~ 12h with ethanol or acetone to head product, washing, obtains pure products;
F, drying, pulverizing: pure products step e obtained dry, pulverize, and to obtain final product.
High strength pumping anti-crack concrete prepared by 22. slag aggregate according to claim 14, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material preparation method is as follows:
A, starch pasting: the distilled water kaolin of the tapioca (flour) of 0.15 weight part and 0.04 weight part being dissolved in 3 weight parts, temperature is 70 ~ 80 DEG C, stirs evenly, gelatinization 30min, obtains solution 1;
B, free radical cause: take the ceric ammonium nitrate of 0.0012 weight part and the ammonium persulphate of 0.0108 weight part, be dissolved in the distilled water of 2 weight parts, temperature is 60 ~ 70 DEG C, stirs evenly, and adds a step and obtains in solution 1, and reaction 10min, obtains solution 2;
C, graft copolymerization: take the monomeric acrylamide of 0.416 weight part, monomer 2-acrylamido-2 methyl propane sulfonic acid of 0.132 weight part and the linking agent of 0.0045 weight part, be dissolved in the distilled water of 3 weight parts, temperature is 60 ~ 70 DEG C, stir evenly, and join in solution 2, be obtained by reacting solution 3, solution 3 is colorless gel shape material or contains gel strong solution; Wherein, the time for adding of monomeric acrylamide and monomer 2-acrylamido-2 methyl propane sulfonic acid controls in 2 ~ 4h;
D, hydrolysis: the distilled water NaOH of 0.13 ~ 0.14 weight part being dissolved in 4 weight parts, join in solution 3, and hydrolysis 30min obtains crude product;
E, dehydration, washing: crude product is dewatered, then soak 6 ~ 12h with ethanol or acetone to head product, washing, obtains pure products;
F, drying, pulverizing: pure products step e obtained dry, pulverize, and to obtain final product.
High strength pumping anti-crack concrete prepared by 23. slag aggregate according to claim 15, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material preparation method is as follows:
A, starch pasting: the distilled water kaolin of the tapioca (flour) of 0.15 weight part and 0.04 weight part being dissolved in 3 weight parts, temperature is 70 ~ 80 DEG C, stirs evenly, gelatinization 30min, obtains solution 1;
B, free radical cause: take the ceric ammonium nitrate of 0.0012 weight part and the ammonium persulphate of 0.0108 weight part, be dissolved in the distilled water of 2 weight parts, temperature is 60 ~ 70 DEG C, stirs evenly, and adds a step and obtains in solution 1, and reaction 10min, obtains solution 2;
C, graft copolymerization: take the monomeric acrylamide of 0.416 weight part, monomer 2-acrylamido-2 methyl propane sulfonic acid of 0.132 weight part and the linking agent of 0.0045 weight part, be dissolved in the distilled water of 3 weight parts, temperature is 60 ~ 70 DEG C, stir evenly, and join in solution 2, be obtained by reacting solution 3, solution 3 is colorless gel shape material or contains gel strong solution; Wherein, the time for adding of monomeric acrylamide and monomer 2-acrylamido-2 methyl propane sulfonic acid controls in 2 ~ 4h;
D, hydrolysis: the distilled water NaOH of 0.13 ~ 0.14 weight part being dissolved in 4 weight parts, join in solution 3, and hydrolysis 30min obtains crude product;
E, dehydration, washing: crude product is dewatered, then soak 6 ~ 12h with ethanol or acetone to head product, washing, obtains pure products;
F, drying, pulverizing: pure products step e obtained dry, pulverize, and to obtain final product.
High strength pumping anti-crack concrete prepared by 24. slag aggregate according to claim 16, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material preparation method is as follows:
A, starch pasting: the distilled water kaolin of the tapioca (flour) of 0.15 weight part and 0.04 weight part being dissolved in 3 weight parts, temperature is 70 ~ 80 DEG C, stirs evenly, gelatinization 30min, obtains solution 1;
B, free radical cause: take the ceric ammonium nitrate of 0.0012 weight part and the ammonium persulphate of 0.0108 weight part, be dissolved in the distilled water of 2 weight parts, temperature is 60 ~ 70 DEG C, stirs evenly, and adds a step and obtains in solution 1, and reaction 10min, obtains solution 2;
C, graft copolymerization: take the monomeric acrylamide of 0.416 weight part, monomer 2-acrylamido-2 methyl propane sulfonic acid of 0.132 weight part and the linking agent of 0.0045 weight part, be dissolved in the distilled water of 3 weight parts, temperature is 60 ~ 70 DEG C, stir evenly, and join in solution 2, be obtained by reacting solution 3, solution 3 is colorless gel shape material or contains gel strong solution; Wherein, the time for adding of monomeric acrylamide and monomer 2-acrylamido-2 methyl propane sulfonic acid controls in 2 ~ 4h;
D, hydrolysis: the distilled water NaOH of 0.13 ~ 0.14 weight part being dissolved in 4 weight parts, join in solution 3, and hydrolysis 30min obtains crude product;
E, dehydration, washing: crude product is dewatered, then soak 6 ~ 12h with ethanol or acetone to head product, washing, obtains pure products;
F, drying, pulverizing: pure products step e obtained dry, pulverize, and to obtain final product.
High strength pumping anti-crack concrete prepared by 25. slag aggregate according to claim 17, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material preparation method is as follows:
A, starch pasting: the distilled water kaolin of the tapioca (flour) of 0.15 weight part and 0.04 weight part being dissolved in 3 weight parts, temperature is 70 ~ 80 DEG C, stirs evenly, gelatinization 30min, obtains solution 1;
B, free radical cause: take the ceric ammonium nitrate of 0.0012 weight part and the ammonium persulphate of 0.0108 weight part, be dissolved in the distilled water of 2 weight parts, temperature is 60 ~ 70 DEG C, stirs evenly, and adds a step and obtains in solution 1, and reaction 10min, obtains solution 2;
C, graft copolymerization: take the monomeric acrylamide of 0.416 weight part, monomer 2-acrylamido-2 methyl propane sulfonic acid of 0.132 weight part and the linking agent of 0.0045 weight part, be dissolved in the distilled water of 3 weight parts, temperature is 60 ~ 70 DEG C, stir evenly, and join in solution 2, be obtained by reacting solution 3, solution 3 is colorless gel shape material or contains gel strong solution; Wherein, the time for adding of monomeric acrylamide and monomer 2-acrylamido-2 methyl propane sulfonic acid controls in 2 ~ 4h;
D, hydrolysis: the distilled water NaOH of 0.13 ~ 0.14 weight part being dissolved in 4 weight parts, join in solution 3, and hydrolysis 30min obtains crude product;
E, dehydration, washing: crude product is dewatered, then soak 6 ~ 12h with ethanol or acetone to head product, washing, obtains pure products;
F, drying, pulverizing: pure products step e obtained dry, pulverize, and to obtain final product.
High strength pumping anti-crack concrete prepared by 26. slag aggregate according to claim 18, is characterized in that, in described starch-grafted negatively charged ion-non-ionic group, conserving material preparation method is as follows:
A, starch pasting: the distilled water kaolin of the tapioca (flour) of 0.15 weight part and 0.04 weight part being dissolved in 3 weight parts, temperature is 70 ~ 80 DEG C, stirs evenly, gelatinization 30min, obtains solution 1;
B, free radical cause: take the ceric ammonium nitrate of 0.0012 weight part and the ammonium persulphate of 0.0108 weight part, be dissolved in the distilled water of 2 weight parts, temperature is 60 ~ 70 DEG C, stirs evenly, and adds a step and obtains in solution 1, and reaction 10min, obtains solution 2;
C, graft copolymerization: take the monomeric acrylamide of 0.416 weight part, monomer 2-acrylamido-2 methyl propane sulfonic acid of 0.132 weight part and the linking agent of 0.0045 weight part, be dissolved in the distilled water of 3 weight parts, temperature is 60 ~ 70 DEG C, stir evenly, and join in solution 2, be obtained by reacting solution 3, solution 3 is colorless gel shape material or contains gel strong solution; Wherein, the time for adding of monomeric acrylamide and monomer 2-acrylamido-2 methyl propane sulfonic acid controls in 2 ~ 4h;
D, hydrolysis: the distilled water NaOH of 0.13 ~ 0.14 weight part being dissolved in 4 weight parts, join in solution 3, and hydrolysis 30min obtains crude product;
E, dehydration, washing: crude product is dewatered, then soak 6 ~ 12h with ethanol or acetone to head product, washing, obtains pure products;
F, drying, pulverizing: pure products step e obtained dry, pulverize, and to obtain final product.
The preparation method of High strength pumping anti-crack concrete prepared by the slag aggregate described in 27. any one of claim 1 ~ 26, is characterized in that comprising the steps:
A, high-titanium dry slag sand, rubble to be mixed with gelling material, stir evenly; And before feeding intake, the water ratio of high-titanium dry slag sand is 7 ~ 10%;
B, add part water, stir evenly;
C, remaining water and raw material to be added, stir evenly, to obtain final product.
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| CN104446174A (en) * | 2014-10-30 | 2015-03-25 | 中国铁道科学研究院铁道建筑研究所 | High-crack-resistant concrete suitable for severe environment and construction method thereof |
| CN104973837A (en) * | 2015-07-13 | 2015-10-14 | 郑州大学 | C50-grade curing-free concrete and composite concrete pavement thereof |
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| CN106542786A (en) * | 2016-10-08 | 2017-03-29 | 深圳海龙建筑科技有限公司 | Self-curing concrete and its production method |
| CN106517901A (en) * | 2016-10-18 | 2017-03-22 | 马鞍山华之智信息科技有限公司 | High heat-storage concrete material and preparation method and application thereof |
| CN106832130B (en) * | 2016-12-12 | 2019-11-08 | 长安大学 | A kind of high tenacity cracking resistance cement concrete and preparation method thereof |
| CN108751811B (en) * | 2018-06-07 | 2020-10-02 | 湖北工业大学 | Preparation method of concrete without negative strength influence and high internal curing efficiency |
| CN112979209B (en) * | 2021-02-04 | 2022-07-12 | 中国石油大学(华东) | Oil well cement composite shrinkage reducing agent, preparation method and application thereof |
| CN113620677A (en) * | 2021-09-14 | 2021-11-09 | 保利长大工程有限公司 | High-toughness low-shrinkage ultrahigh-performance concrete and preparation method thereof |
| CN113754386B (en) * | 2021-10-26 | 2022-06-03 | 云南中建西部建设有限公司 | Anti-ultraviolet radiation concrete and preparation method thereof |
| CN114988760B (en) * | 2022-04-02 | 2023-10-10 | 湖北工业大学 | Titanium slag polymer anticorrosive paint and preparation method thereof |
| CN117886560B (en) * | 2024-03-15 | 2024-05-14 | 石家庄铁道大学 | Geopolymer concrete containing temperature-sensitive SAP (super absorbent polymer) and preparation method thereof |
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