CN109665775A - Using high-titanium slag as C20 phase-change accumulation energy concrete of phase transformation carrier and preparation method thereof - Google Patents
Using high-titanium slag as C20 phase-change accumulation energy concrete of phase transformation carrier and preparation method thereof Download PDFInfo
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- CN109665775A CN109665775A CN201811588782.XA CN201811588782A CN109665775A CN 109665775 A CN109665775 A CN 109665775A CN 201811588782 A CN201811588782 A CN 201811588782A CN 109665775 A CN109665775 A CN 109665775A
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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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/144—Slags from the production of specific metals other than iron or of specific alloys, e.g. ferrochrome slags
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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
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
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Abstract
The invention belongs to concrete fields, it specifically discloses a kind of using high-titanium slag as C20 phase-change accumulation energy concrete of phase transformation carrier and preparation method thereof, the concrete is made of following material: 300-330 parts of cement, 30-40 parts of flyash, 580-620 parts of fine aggregate, 1230-1280 parts of coarse aggregate, 0.8-1.5 parts of water-reducing agent, 155-175 parts of water, based on parts by weight；Preparation method is as follows: weighing raw material according to above-mentioned important part, in concrete mixer, fine aggregate, cement, flyash, 30~60s of coarse aggregate dry mixing first is added after mixing, the mixed solution of water-reducing agent and water is added while stirring, stirring 3-5min is obtained.A kind of phase-change accumulation energy concrete prepared by the present invention has excellent mechanical property and energy-storage property, and the intensity of concrete meets the requirement of C20, and 15-40 DEG C of energy storage capacity of folk prescription concrete is higher than 35 × 103KJ, while use and the abundant high-titanium slag utilization approaches for traditional phase-change accumulation energy carrier material such as advantageously reduce expanded perlite.
Description
Technical field
The invention belongs to concrete fields, specifically disclose a kind of mixed by the C20 phase-change accumulation energy of phase transformation carrier of high-titanium slag
Solidifying soil and preparation method thereof.
Background technique
Phase-change accumulation energy concrete is mixed by introducing green intelligent prepared by phase-changing energy storage material in concrete substrate
Solidifying soil, which are mainly applied to building energy saving fields, compared with normal concrete, phase-change accumulation energy concrete specific heat with higher
Hold, outer wall material is made with phase change concrete, can effectively control the fluctuation range of room temperature, comfort level is improved, reaches and build
Build energy-efficient purpose.
Currently, in the technology of preparing of phase-change accumulation energy concrete, generally using inorganic material such as expanded perlites as phase
The carrier of change energy-storage material, carrier and the compound rear incorporation concrete of phase-changing energy storage material prepare phase change concrete.With expanded pearlite
For rock, expanded perlite is that perlite ore is preheated, and a kind of manufactured inside is honeycomb after TRANSIENT HIGH TEMPERATURE calcining expansion
The white particle of structure, the complex method with phase-changing energy storage material: the phase-changing energy storage material of expanded perlite and liquid first
Mixing, so that porous expanded perlite is fully absorbed phase-changing energy storage material using vacuum suction method, then to expanded perlite into
Row surface encapsulation blocks phase-changing energy storage material inside expanded perlite.According to its principle, it is in if grain structure can be developed and used
The Industrial Solid Waste of existing porous character makees the carrier of phase-changing energy storage material, and substitutes the fine aggregate in concrete to prepare phase-change accumulation energy mixed
Solidifying soil, then can not only reduce the dosage of traditional phase-change accumulation energy carrier material such as expanded perlite to save its resources of production,
The energy can also enrich the resource utilization approach of other class Industrial Solid Wastes and be conducive to fixed-end forces and environmental protection.
High-titanium slag is a kind of waste residue of v-bearing titanomagnetite smelting industrial discharge, has Ti content height, grindability poor, active
Low, the features such as bulk density is small, main chemical compositions include CaO, TiO2、SiO2、Al2O3, wherein TiO2Content is higher, generally
Greater than 10%, 20% or more is reached as high as.There are a large amount of hole, hole extends to inside particle simultaneously high-titanium slag particle surface
It penetrates through each other, water absorption rate with higher.Due to specifically forming environment, mud, organic matter, impurity in high-titanium slag etc. contain
Amount is very low, and grain diameter is mainly distributed in the range of zero to several millimeters.Therefore, high-titanium slag has that make phase-change accumulation energy mixed
The necessary condition of the carrier of phase-changing energy storage material in solidifying soil, the present invention is quasi- to prepare phase by phase-changing energy storage material carrier of high-titanium slag
Become energy-storing concrete.
Summary of the invention
For dosage and the abundant high-titanium slag recycling way for reducing traditional phase-change accumulation energy carrier material such as expanded perlite
Diameter, the present invention provides a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase-changing energy storage material carrier and its preparation side
Method.
Technical scheme is as follows:
It is a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, be made of following material: cement 300-
330 parts, 30-40 parts of flyash, 580-620 parts of fine aggregate, 1230-1280 parts of coarse aggregate, 0.8-1.5 parts of water-reducing agent, water 155-
175 parts, based on parts by weight.
Preferably, it is a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, it is made of following material:
307-322 parts of cement, 33-38 parts of flyash, 590-610 parts of fine aggregate, 1240-1270 parts of coarse aggregate, 1-1.4 parts of water-reducing agent,
160-170 parts of water, based on parts by weight.
Further, a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, it is made of following material: water
315 parts of mud, 35 parts of flyash, 600 parts of fine aggregate, 1250 parts of coarse aggregate, 1.2 parts of water-reducing agent, 165 parts of water, based on parts by weight.
The cement is selected from P.O42.5 cement, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance test results
It is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min, 3
Its flexural strength 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
The flyash is selected from I grade of flyash of original state F class, is provided by Sichuan Tie Run commerce and trade Co., Ltd, performance detection
As a result as follows: normal consistency water requirement 23.2%, specific surface area 414m2·kg-1, SO3Content 1.2%, content of MgO 0.83%,
28 days compressive strength rates 93.1%.
The fine aggregate is selected from using high-titanium slag as the composite phase-change energy storage material of phase-changing energy storage material carrier, high-titanium slag
It is provided by Panzhihua Iron, quality water absorption rate 12.2% more dry than saturation plane, apparent bulk density 1705Kg/m3, tightly packed appearance
Weight 1190Kg/m3。
The composite phase-change energy storage material the preparation method is as follows:
(1) pretreated high-titanium slag is added in vacuum reaction kettle, bath temperature control is 75-85 DEG C, with 55-65r/
Min is stirred；Start to vacuumize after stirring 20-30min, vacuum cavitations are in 0.55~0.62MPa；Then it is initially added into stone
Wax, mixing speed is improved to 75-85r/min, after paraffin adds, vacuum cavitations in 0.9-1.0MPa, mixing speed improve to
After 110-130r/min, 25-35min, close heating water bath, after material in reaction kettle is cooled to normal room temperature stop stirring and
Extraction valve is closed, discharging is then carried out；
(2) it after taking out the high-titanium slag for being adsorbed with paraffin, is completely soaked at normal room temperature in 2.9-3.1mol/L's
It is taken out after 1-2h in water glass solution (i.e. sodium silicate solution), the high-titanium slag surface for being adsorbed with paraffin carries a large amount of silicates
Ion, then it is completely soaked the CaCl in 1.9-2.1mol/L2It is taken out after solution 12-24h, silicate ion and CaCl2Calcium in solution
Ion is chemically combined, and can form a preliminary encapsulated layer i.e. hydrated calcium silicate on the high-titanium slag surface for being adsorbed with paraffin
Layer, the hydrated calcium silicate layer can stop the paraffin being adsorbed to overflow from high-titanium slag hole, by the height by tentatively encapsulating
Titanium slag is put into 7~14d of maintenance, the hydrated calcium silicate layer on high-titanium slag surface in cement standard curing box and gradually develops completely,
Paraffin/high-titanium slag composite phase-change energy storage material is obtained at this time.
Step (1) pre-treatment step is: high-titanium slag being sieved, takes whole particles under 4.75mm spare, then will be standby
High-titanium slag is placed in 100 DEG C of thermostatic drying chamber drying for 24 hours, then is placed in confined space and is cooled to room temperature.
The paraffin that step (1) is added, is completely melt through 80 DEG C of heating, and fusing point is 25.5 DEG C, solid-liquid phase change endothermic peak
Temperature is 35.2 DEG C, latent heat of phase change 143.1J/g, and the volume ratio of paraffin and high-titanium slag is controlled in 0.2-0.3.
Normal room temperature refers to 23 ± 2 DEG C.
The coarse aggregate is selected from the stone of 5-20mm Continuous Particle Size.
The water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, are mentioned by Sequa Corp, Switzerland
For, solid content 50%, water-reducing rate 38% is good with cement adaptability.
It is a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, preparation method is as follows: according to above-mentioned heavy
It wants part to weigh raw material, in concrete mixer, fine aggregate, cement, flyash, 30~60s of coarse aggregate dry mixing mixing is first added
After uniformly, the mixed solution of water-reducing agent and water is added while stirring, stirring 3-5min is obtained.
Using high-titanium slag as phase transformation carrier C20 phase-change accumulation energy concrete application: high-titanium slag is v-ti magnetite mining and metallurgy
Refining industrial discharge has the characteristics that Ti content height, a kind of waste residue that grindability is poor, activity is low, bulk density is small, at present synthesis
Utilization rate is very low.High-titanium slag particle porosity is higher, surface pore aperture is distributed mainly on several microns to several hundred micron ranges
It is interior, while the specific environment that formed keeps the crystallinity of the non-aperture sections of high-titanium slag particle good, hole wall is very firm.In high titanium
In the tradition application of slag, the feature of high-titanium slag high porosity is considered increasingly as a unfavorable factor, such as with high-titanium slag
Concrete fine aggregate is directly done, high porosity will increase the water consumption of concrete, reduction concrete workability etc., and the present invention fills
Divide the physicochemical characteristic that high-titanium slag is utilized, turns inferiority into superiority, make phase-changing energy storage material carrier using high-titanium slag, it can
Its traditional unfavorable factor (porosity is high) is converted into favorable factor, while fully absorbing the high-titanium slag of phase-changing energy storage material
Grain water absorption rate after surface encapsulation is decreased obviously, and substitution sand will not dramatically increase concrete water when making concrete fine aggregate
Amount.
42.5 ordinary portland cements, flyash constitute the gelling system of phase-change accumulation energy concrete in the present invention.
42.5 ordinary portland cements in the present invention are the core bonding components of phase-change accumulation energy concrete, to phase-change accumulation energy
Mechanical property, workability, durability of concrete etc. have critical impact.
Flyash in the present invention is the complementary bonding component of phase-change accumulation energy concrete.Flyash is generally referred to from fire coal
A kind of fine ash being collected into power-plant flue gas containing the higher active silica-alumina mineral of a large amount of oxygen-octahedron degree of polymerization, and is in
Existing smooth fine and close, inner hollow the granule-morphology in surface.When flyash is used as complementary bonding component, gel can be reduced
The water requirement of system improves the workability of gelling system, significantly improves later strength, durability, impermeability of gelling system etc..
Using cement, the gelling system of flyash building phase-change accumulation energy concrete in the present invention, the characteristics of the gelling system
Be with advantage: (one) bonding component is relatively easy, uncomplicated, and convenient for adjusting the performance of gelling system, such as setting time needs water
Amount, compression strength etc., in addition, being conducive to enhance the compatibility of gelling system and concrete admixture；(2) in phase change concrete
Gelling system in, 42.5 ordinary portland cements and flyash can produce good performance advantage complementation, relative to pure
The gelling system of 42.5 ordinary portland cements, 42.5 ordinary portland cements and the compound gelling system of flyash have and need water
Measure the features such as lower, heat of hydration release is more mild, later strength is higher, microstructure is finer and close and advantage.
Fine aggregate in the present invention had not only been used as concrete tradition fine aggregate, but also as composite phase-change energy storage material；As mixed
When solidifying soil tradition fine aggregate, mainly play skeleton and filling；When as composite phase-change energy storage material, phase-change accumulation energy is mainly played
Effect, so that concrete is obtained good phase change energy storage function.So-called good phase change energy storage function is mostly derived from following two
Aspect: (1) selection of phase-changing energy storage material: paraffin is chosen in the present invention as phase-changing energy storage material, paraffin has latent heat of phase change
The advantages that high, stable, nontoxic non-corrosive, cheap without supercooling and precipitation phenomenon, performance.(2) phase-changing energy storage material carrier
Selection: high-titanium slag is chosen in the present invention as phase-changing energy storage material carrier, high-titanium slag particle porosity is higher, surface holes
Lyriform pore diameter is distributed mainly on several microns in several hundred micron ranges, while the specific environment that formed makes the non-hole of high-titanium slag particle
Partial crystallinity is good, and hole wall is very firm, therefore, is easy to keep structure in the phase transformation cyclic process of phase-changing energy storage material
Stablize.
Coarse aggregate in the present invention mainly plays skeleton and filling effect, adjusts the ratio of coarse-fine aggregate, adjustable coagulation
Workability, cohesiveness and the mechanical property etc. of soil.
In the present invention, poly carboxylic acid series water reducer is mainly used for reducing concrete water amount, improves the mechanical property of concrete,
Improve mobility, workability and cohesiveness of concrete etc. simultaneously.
The beneficial effects of the present invention are:
The present invention provides a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, is made of following material:
300-330 parts of cement, 30-40 parts of flyash, 580-620 parts of fine aggregate, 1230-1280 parts of coarse aggregate, water-reducing agent 0.8-1.5
Part, 155-175 parts of water, based on parts by weight.The present invention makees fine aggregate and the phase transformation of phase-change accumulation energy concrete using high-titanium slag
Energy storage material carrier is prepared for a kind of using high-titanium slag as the C20 phase transformation of phase transformation carrier storage using paraffin as phase-changing energy storage material
It can concrete.A kind of phase-change accumulation energy concrete prepared by the present invention has excellent mechanical property and energy-storage property, concrete
Intensity meets the requirement of C20, and 15-40 DEG C of energy storage capacity of folk prescription concrete is higher than 35 × 103KJ, while advantageously reducing expanded pearlite
The use of the tradition phase-change accumulation energy carrier material such as rock and abundant high-titanium slag utilization approaches.
Specific embodiment:
Embodiment 1:
It is a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, be made of following material: 315 parts of cement,
35 parts of flyash, 600 parts of fine aggregate, 1250 parts of coarse aggregate, 1.2 parts of water-reducing agent, 165 parts of water, based on parts by weight.
Wherein, cement is selected from P.O42.5 cement, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
The flyash is selected from I grade of flyash of original state F class, is provided by Sichuan Tie Run commerce and trade Co., Ltd, performance detection
As a result as follows: normal consistency water requirement 23.2%, specific surface area 414m2·kg-1, SO3Content 1.2%, content of MgO 0.83%,
28 days compressive strength rates 93.1%.
Wherein, the fine aggregate is selected from using high-titanium slag as the composite phase-change energy storage material of phase-changing energy storage material carrier, high
Titanium slag is provided by Panzhihua Iron, quality water absorption rate 12.2% more dry than saturation plane, apparent bulk density 1705Kg/m3, closely
Accumulate bulk density 1190Kg/m3。
The composite phase-change energy storage material the preparation method is as follows:
(1) high-titanium slag is sieved, takes whole particles under 4.75mm spare；
(2) it takes a certain amount of above-mentioned spare high-titanium slag to be placed in 100 DEG C of thermostatic drying chamber drying for 24 hours, then is placed in closed
It is cooled to room temperature in space, is then added in vacuum reaction kettle, bath temperature control is 75 DEG C, is stirred with 60r/min；It stirs
Start to vacuumize after mixing 20min, vacuum cavitations are in 0.58MPa；Then, it is initially added into and heats the paraffin being completely melt through 80 DEG C
(fusing point is 25.5 DEG C, and solid-liquid phase change endotherm peak temperature is 35.2 DEG C, latent heat of phase change 143.1J/g) simultaneously controls paraffin and high titanium ore
The volume ratio control of slag is 0.29, and mixing speed is improved to 80r/min, and after paraffin adds, vacuum cavitations are in 0.95MPa, stirring
Speed is improved to 115r/min, after 30min, is closed heating water bath, is cooled to normal room temperature (23 ± 2 DEG C) to material in reaction kettle
Stop stirring afterwards and close extraction valve, then carries out discharging；
(3) will be adsorbed with paraffin high-titanium slag take out after, under normal room temperature (23 ± 2 DEG C), be completely soaked in
It is taken out after water glass solution (i.e. sodium silicate solution) 2h of 3.0mol/L, the high-titanium slag surface for being adsorbed with paraffin carries largely
Silicate ion, then it is completely soaked the CaCl in 1.9mol/L2It is taken out after solution 16h, silicate ion and CaCl2Calcium in solution
Ion is chemically combined, and can form a preliminary encapsulated layer i.e. hydrated calcium silicate on the high-titanium slag surface for being adsorbed with paraffin
Layer, the hydrated calcium silicate layer can stop the paraffin being adsorbed to overflow from high-titanium slag hole, by the height by tentatively encapsulating
Titanium slag, which is put into cement standard curing box, conserves 7d, and the hydrated calcium silicate layer on high-titanium slag surface is gradually developed completely, at this time
Obtain paraffin/high-titanium slag composite phase-change energy storage material.
Wherein, coarse aggregate is selected from the stone of 5-20mm Continuous Particle Size.
Wherein, water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, by Sequa Corp, Switzerland
It provides, solid content 50%, water-reducing rate 38% is good with cement adaptability.
It is a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, preparation method is as follows: according to above-mentioned heavy
It wants part to weigh raw material, in concrete mixer, fine aggregate, cement, flyash, coarse aggregate dry mixing 30s is first added and is uniformly mixed
Afterwards, the mixed solution of water-reducing agent and water is added while stirring, stirring 5min is obtained.
Embodiment 2:
It is a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, be made of following material: 307 parts of cement,
33 parts of flyash, 610 parts of fine aggregate, 1270 parts of coarse aggregate, 1 part of water-reducing agent, 170 parts of water, based on parts by weight.
Wherein, cement is selected from P.O42.5 cement, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
The flyash is selected from I grade of flyash of original state F class, is provided by Sichuan Tie Run commerce and trade Co., Ltd, performance detection
As a result as follows: normal consistency water requirement 23.2%, specific surface area 414m2·kg-1, SO3Content 1.2%, content of MgO 0.83%,
28 days compressive strength rates 93.1%.
Wherein, the fine aggregate is selected from using high-titanium slag as the composite phase-change energy storage material of phase-changing energy storage material carrier, high
Titanium slag is provided by Panzhihua Iron, quality water absorption rate 12.2% more dry than saturation plane, apparent bulk density 1705Kg/m3, closely
Accumulate bulk density 1190Kg/m3。
The composite phase-change energy storage material the preparation method is as follows:
(1) high-titanium slag is sieved, takes whole particles under 4.75mm spare；
(2) it takes a certain amount of above-mentioned spare high-titanium slag to be placed in 100 DEG C of thermostatic drying chamber drying for 24 hours, then is placed in closed
It is cooled to room temperature in space, is then added in vacuum reaction kettle, bath temperature control is 75 DEG C, is stirred with 60r/min；It stirs
Start to vacuumize after mixing 25min, vacuum cavitations are in 0.58MPa；Then, it is initially added into and heats the paraffin being completely melt through 80 DEG C
(fusing point is 25.5 DEG C, and solid-liquid phase change endotherm peak temperature is 35.2 DEG C, latent heat of phase change 143.1J/g) simultaneously controls paraffin and high titanium ore
The volume ratio control of slag is 0.29, and mixing speed is improved to 80r/min, and after paraffin adds, vacuum cavitations are in 0.95MPa, stirring
Speed is improved to 115r/min, after 30min, is closed heating water bath, is cooled to normal room temperature (23 ± 2 DEG C) to material in reaction kettle
Stop stirring afterwards and close extraction valve, then carries out discharging；
(3) will be adsorbed with paraffin high-titanium slag take out after, under normal room temperature (23 ± 2 DEG C), be completely soaked in
It is taken out after water glass solution (i.e. sodium silicate solution) 2h of 3.0mol/L, the high-titanium slag surface for being adsorbed with paraffin carries largely
Silicate ion, then it is completely soaked the CaCl in 1.9mol/L2It is taken out after solution 16h, silicate ion and CaCl2Calcium in solution
Ion is chemically combined, and can form a preliminary encapsulated layer i.e. hydrated calcium silicate on the high-titanium slag surface for being adsorbed with paraffin
Layer, the hydrated calcium silicate layer can stop the paraffin being adsorbed to overflow from high-titanium slag hole, by the height by tentatively encapsulating
Titanium slag, which is put into cement standard curing box, conserves 8d, and the hydrated calcium silicate layer on high-titanium slag surface is gradually developed completely, at this time
Obtain paraffin/high-titanium slag composite phase-change energy storage material.
Wherein, coarse aggregate is selected from the stone of 5-20mm Continuous Particle Size.
Wherein, water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, by Sequa Corp, Switzerland
It provides, solid content 50%, water-reducing rate 38% is good with cement adaptability.
It is a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, preparation method is as follows: according to above-mentioned heavy
It wants part to weigh raw material, in concrete mixer, fine aggregate, cement, flyash, coarse aggregate dry mixing 40s is first added and is uniformly mixed
Afterwards, the mixed solution of water-reducing agent and water is added while stirring, stirring 5min is obtained.
Embodiment 3:
It is a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, be made of following material: 322 parts of cement,
38 parts of flyash, 590 parts of fine aggregate, 1240 parts of coarse aggregate, 1.4 parts of water-reducing agent, 165 parts of water, based on parts by weight.
Wherein, cement is selected from P.O42.5 cement, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
The flyash is selected from I grade of flyash of original state F class, is provided by Sichuan Tie Run commerce and trade Co., Ltd, performance detection
As a result as follows: normal consistency water requirement 23.2%, specific surface area 414m2·kg-1, SO3Content 1.2%, content of MgO 0.83%,
28 days compressive strength rates 93.1%.
Wherein, the fine aggregate is selected from using high-titanium slag as the composite phase-change energy storage material of phase-changing energy storage material carrier, high
Titanium slag is provided by Panzhihua Iron, quality water absorption rate 12.2% more dry than saturation plane, apparent bulk density 1705Kg/m3, closely
Accumulate bulk density 1190Kg/m3。
The composite phase-change energy storage material the preparation method is as follows:
(1) high-titanium slag is sieved, takes whole particles under 4.75mm spare；
(2) it takes a certain amount of above-mentioned spare high-titanium slag to be placed in 100 DEG C of thermostatic drying chamber drying for 24 hours, then is placed in closed
It is cooled to room temperature in space, is then added in vacuum reaction kettle, bath temperature control is 75 DEG C, is stirred with 60r/min；It stirs
Start to vacuumize after mixing 26min, vacuum cavitations are in 0.58MPa；Then, it is initially added into and heats the paraffin being completely melt through 80 DEG C
(fusing point is 25.5 DEG C, and solid-liquid phase change endotherm peak temperature is 35.2 DEG C, latent heat of phase change 143.1J/g) simultaneously controls paraffin and high titanium ore
The volume ratio control of slag is 0.29, and mixing speed is improved to 80r/min, and after paraffin adds, vacuum cavitations are in 0.95MPa, stirring
Speed is improved to 115r/min, after 30min, is closed heating water bath, is cooled to normal room temperature (23 ± 2 DEG C) to material in reaction kettle
Stop stirring afterwards and close extraction valve, then carries out discharging；
(3) will be adsorbed with paraffin high-titanium slag take out after, under normal room temperature (23 ± 2 DEG C), be completely soaked in
It is taken out after water glass solution (i.e. sodium silicate solution) 2h of 3.0mol/L, the high-titanium slag surface for being adsorbed with paraffin carries largely
Silicate ion, then it is completely soaked the CaCl in 1.9mol/L2It is taken out after solution 16h, silicate ion and CaCl2Calcium in solution
Ion is chemically combined, and can form a preliminary encapsulated layer i.e. hydrated calcium silicate on the high-titanium slag surface for being adsorbed with paraffin
Layer, the hydrated calcium silicate layer can stop the paraffin being adsorbed to overflow from high-titanium slag hole, by the height by tentatively encapsulating
Titanium slag, which is put into cement standard curing box, conserves 9d, and the hydrated calcium silicate layer on high-titanium slag surface is gradually developed completely, at this time
Obtain paraffin/high-titanium slag composite phase-change energy storage material.
Wherein, coarse aggregate is selected from the stone of 5-20mm Continuous Particle Size.
Wherein, water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, by Sequa Corp, Switzerland
It provides, solid content 50%, water-reducing rate 38% is good with cement adaptability.
It is a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, preparation method is as follows: according to above-mentioned heavy
It wants part to weigh raw material, in concrete mixer, fine aggregate, cement, flyash, coarse aggregate dry mixing 50s is first added and is uniformly mixed
Afterwards, the mixed solution of water-reducing agent and water is added while stirring, stirring 5min is obtained.
Embodiment 4:
It is a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, be made of following material: 315 parts of cement,
35 parts of flyash, 590 parts of fine aggregate, 1270 parts of coarse aggregate, 1.2 parts of water-reducing agent, 165 parts of water, based on parts by weight.
Wherein, cement is selected from P.O42.5 cement, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
The flyash is selected from I grade of flyash of original state F class, is provided by Sichuan Tie Run commerce and trade Co., Ltd, performance detection
As a result as follows: normal consistency water requirement 23.2%, specific surface area 414m2·kg-1, SO3Content 1.2%, content of MgO 0.83%,
28 days compressive strength rates 93.1%.
Wherein, the fine aggregate is selected from using high-titanium slag as the composite phase-change energy storage material of phase-changing energy storage material carrier, high
Titanium slag is provided by Panzhihua Iron, quality water absorption rate 12.2% more dry than saturation plane, apparent bulk density 1705Kg/m3, closely
Accumulate bulk density 1190Kg/m3。
The composite phase-change energy storage material the preparation method is as follows:
(1) high-titanium slag is sieved, takes whole particles under 4.75mm spare；
(2) it takes a certain amount of above-mentioned spare high-titanium slag to be placed in 100 DEG C of thermostatic drying chamber drying for 24 hours, then is placed in closed
It is cooled to room temperature in space, is then added in vacuum reaction kettle, bath temperature control is 75 DEG C, is stirred with 60r/min；It stirs
Start to vacuumize after mixing 28min, vacuum cavitations are in 0.58MPa；Then, it is initially added into and heats the paraffin being completely melt through 80 DEG C
(fusing point is 25.5 DEG C, and solid-liquid phase change endotherm peak temperature is 35.2 DEG C, latent heat of phase change 143.1J/g) simultaneously controls paraffin and high titanium ore
The volume ratio control of slag is 0.29, and mixing speed is improved to 80r/min, and after paraffin adds, vacuum cavitations are in 0.95MPa, stirring
Speed is improved to 115r/min, after 30min, is closed heating water bath, is cooled to normal room temperature (23 ± 2 DEG C) to material in reaction kettle
Stop stirring afterwards and close extraction valve, then carries out discharging；
(3) will be adsorbed with paraffin high-titanium slag take out after, under normal room temperature (23 ± 2 DEG C), be completely soaked in
It is taken out after water glass solution (i.e. sodium silicate solution) 2h of 3.0mol/L, the high-titanium slag surface for being adsorbed with paraffin carries largely
Silicate ion, then it is completely soaked the CaCl in 1.9mol/L2It is taken out after solution 16h, silicate ion and CaCl2Calcium in solution
Ion is chemically combined, and can form a preliminary encapsulated layer i.e. hydrated calcium silicate on the high-titanium slag surface for being adsorbed with paraffin
Layer, the hydrated calcium silicate layer can stop the paraffin being adsorbed to overflow from high-titanium slag hole, by the height by tentatively encapsulating
Titanium slag, which is put into cement standard curing box, conserves 10d, and the hydrated calcium silicate layer on high-titanium slag surface is gradually developed completely, at this time
Obtain paraffin/high-titanium slag composite phase-change energy storage material.
Wherein, coarse aggregate is selected from the stone of 5-20mm Continuous Particle Size.
Wherein, water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, by Sequa Corp, Switzerland
It provides, solid content 50%, water-reducing rate 38% is good with cement adaptability.
It is a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, preparation method is as follows: according to above-mentioned heavy
It wants part to weigh raw material, in concrete mixer, fine aggregate, cement, flyash, coarse aggregate dry mixing 50s is first added and is uniformly mixed
Afterwards, the mixed solution of water-reducing agent and water is added while stirring, stirring 5min is obtained.
Embodiment 5:
It is a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, be made of following material: 315 parts of cement,
35 parts of flyash, 610 parts of fine aggregate, 1240 parts of coarse aggregate, 1.2 parts of water-reducing agent, 165 parts of water, based on parts by weight.
Wherein, cement is selected from P.O42.5 cement, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
The flyash is selected from I grade of flyash of original state F class, is provided by Sichuan Tie Run commerce and trade Co., Ltd, performance detection
As a result as follows: normal consistency water requirement 23.2%, specific surface area 414m2·kg-1, SO3Content 1.2%, content of MgO 0.83%,
28 days compressive strength rates 93.1%.
Wherein, the fine aggregate is selected from using high-titanium slag as the composite phase-change energy storage material of phase-changing energy storage material carrier, high
Titanium slag is provided by Panzhihua Iron, quality water absorption rate 12.2% more dry than saturation plane, apparent bulk density 1705Kg/m3, closely
Accumulate bulk density 1190Kg/m3。
The composite phase-change energy storage material the preparation method is as follows:
(1) high-titanium slag is sieved, takes whole particles under 4.75mm spare；
(2) it takes a certain amount of above-mentioned spare high-titanium slag to be placed in 100 DEG C of thermostatic drying chamber drying for 24 hours, then is placed in closed
It is cooled to room temperature in space, is then added in vacuum reaction kettle, bath temperature control is 75 DEG C, is stirred with 60r/min；It stirs
Start to vacuumize after mixing 30min, vacuum cavitations are in 0.58MPa；Then, it is initially added into and heats the paraffin being completely melt through 80 DEG C
(fusing point is 25.5 DEG C, and solid-liquid phase change endotherm peak temperature is 35.2 DEG C, latent heat of phase change 143.1J/g) simultaneously controls paraffin and high titanium ore
The volume ratio control of slag is 0.29, and mixing speed is improved to 80r/min, and after paraffin adds, vacuum cavitations are in 0.95MPa, stirring
Speed is improved to 115r/min, after 30min, is closed heating water bath, is cooled to normal room temperature (23 ± 2 DEG C) to material in reaction kettle
Stop stirring afterwards and close extraction valve, then carries out discharging；
(3) will be adsorbed with paraffin high-titanium slag take out after, under normal room temperature (23 ± 2 DEG C), be completely soaked in
It is taken out after water glass solution (i.e. sodium silicate solution) 2h of 3.0mol/L, the high-titanium slag surface for being adsorbed with paraffin carries largely
Silicate ion, then it is completely soaked the CaCl in 1.9mol/L2It is taken out after solution 16h, silicate ion and CaCl2Calcium in solution
Ion is chemically combined, and can form a preliminary encapsulated layer i.e. hydrated calcium silicate on the high-titanium slag surface for being adsorbed with paraffin
Layer, the hydrated calcium silicate layer can stop the paraffin being adsorbed to overflow from high-titanium slag hole, by the height by tentatively encapsulating
Titanium slag, which is put into cement standard curing box, conserves 11d, and the hydrated calcium silicate layer on high-titanium slag surface is gradually developed completely, at this time
Obtain paraffin/high-titanium slag composite phase-change energy storage material.
Wherein, coarse aggregate is selected from the stone of 5-20mm Continuous Particle Size.
Wherein, water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, by Sequa Corp, Switzerland
It provides, solid content 50%, water-reducing rate 38% is good with cement adaptability.
It is a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, preparation method is as follows: according to above-mentioned heavy
It wants part to weigh raw material, in concrete mixer, fine aggregate, cement, flyash, coarse aggregate dry mixing 60s is first added and is uniformly mixed
Afterwards, the mixed solution of water-reducing agent and water is added while stirring, stirring 5min is obtained.
C20 phase-change accumulation energy concrete prepared by Examples 1 to 5 is tested for the property, as a result as follows:
It is single by data in upper table it is found that the phase-change accumulation energy concrete of Examples 1 to 5 preparation reaches the strength grade of C20
15-40 DEG C of energy storage capacity of square concrete is above 35 × 103KJ, this shows to make fine aggregate and phase-changing energy storage material using high-titanium slag
Carrier makees phase-changing energy storage material with paraffin, and a kind of of preparation has by the C20 phase-change accumulation energy concrete of phase transformation carrier of high-titanium slag
There are excellent mechanical property and energy-storage property.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Modification done within the spirit and principles of the present invention should all contain
Within protection scope of the present invention.
Claims (10)
1. a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, it is characterised in that: be made of following material:
300-330 parts of cement, 30-40 parts of flyash, 580-620 parts of fine aggregate, 1230-1280 parts of coarse aggregate, water-reducing agent 0.8-1.5
Part, 155-175 parts of water, based on parts by weight.
2. according to claim 1 a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, feature exists
In: it is made of following material: 307-322 parts of cement, 33-38 parts of flyash, 590-610 parts of fine aggregate, coarse aggregate 1240-1270
Part, 1-1.4 parts of water-reducing agent, 160-170 parts of water, based on parts by weight.
3. according to claim 2 a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, feature exists
In: be made of following material: 315 parts of cement, 35 parts of flyash, 600 parts of fine aggregate, 1250 parts of coarse aggregate, 1.2 parts of water-reducing agent,
165 parts of water, based on parts by weight.
4. it is according to claim 1 or 2 or 3 a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier,
Be characterized in that: the cement is selected from 42.5 cement of P.O；The flyash is selected from I grade of flyash of original state F class.
5. it is according to claim 1 or 2 or 3 a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier,
Be characterized in that: the fine aggregate is selected from using high-titanium slag as the composite phase-change energy storage material of phase-changing energy storage material carrier.
6. according to claim 5 a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, feature exists
In: steps are as follows for the preparation method of the fine aggregate:
(1) pretreated high-titanium slag is added in vacuum reaction kettle, bath temperature control is 75-85 DEG C, with 55-65r/min
It is stirred；Start to vacuumize after stirring 20-30min, vacuum cavitations are in 0.55~0.62MPa；Then it is initially added into paraffin, is stirred
It mixes speed to improve to 75-85r/min, after paraffin adds, in 0.9-1.0MPa, mixing speed is improved to 110- vacuum cavitations
After 130r/min, 25-35min, heating water bath is closed, stop stirring after material in reaction kettle is cooled to normal room temperature and is closed
Then extraction valve carries out discharging；
(2) after taking out the high-titanium slag for being adsorbed with paraffin, it is completely soaked the water glass in 2.9-3.1mol/L at normal room temperature
It is taken out after 1-2h in glass solution, then is completely soaked the CaCl in 1.9-2.1mol/L2It is taken out after solution 12-24h, it will be by preliminary
The high-titanium slag of encapsulation is put into 7~14d of maintenance in cement standard curing box, obtains paraffin/high-titanium slag composite phase-change at this time
Energy storage material.
7. according to claim 6 a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier, feature exists
In: step (1) pre-treatment step is: high-titanium slag being sieved, takes under 4.75mm whole particles spare, then by spare height
Titanium slag is placed in 100 DEG C of thermostatic drying chamber drying for 24 hours, then is placed in confined space and is cooled to room temperature；Paraffin and high-titanium slag
Volume ratio is controlled in 0.2-0.3.
8. it is according to claim 1 or 2 or 3 a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier,
Be characterized in that: the coarse aggregate is selected from the stone of 5-20mm Continuous Particle Size；The water-reducing agent is selected from Sika3301
Type high performance water reducing agent of polyocarboxy acid, solid content 50%, water-reducing rate 38%.
9. according to claim 1 or 2 or 3 a kind of using high-titanium slag as the C20 phase-change accumulation energy concrete of phase transformation carrier
Preparation method, it is characterised in that: specific step is as follows: weighing raw material according to above-mentioned important part, in concrete mixer, first plus
Enter cement, flyash, fine aggregate, coarse aggregate dry mixing 30-60s after mixing, the mixing of water-reducing agent and water is added while stirring
Solution, stirring 3-5min are obtained.
10. using high-titanium slag as phase transformation carrier C20 phase-change accumulation energy concrete application.
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