CN109608222A - A kind of preparation method of vegetation type regeneration concrete Roofing brick - Google Patents
A kind of preparation method of vegetation type regeneration concrete Roofing brick Download PDFInfo
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- CN109608222A CN109608222A CN201811423347.1A CN201811423347A CN109608222A CN 109608222 A CN109608222 A CN 109608222A CN 201811423347 A CN201811423347 A CN 201811423347A CN 109608222 A CN109608222 A CN 109608222A
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0038—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by superficial sintering or bonding of particulate matter
- C04B38/0041—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by superficial sintering or bonding of particulate matter the particulate matter having preselected particle sizes
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/28—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing peat, moss or sphagnum
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
- A01G9/027—Pots connected in horizontal rows
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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
- C04B18/16—Waste materials; Refuse from building or ceramic industry
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5007—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing
- C04B41/5014—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing containing sulfur in the anion, e.g. sulfides
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/65—Coating or impregnation with inorganic materials
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
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- 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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- 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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Abstract
A kind of preparation method of vegetation type regeneration concrete Roofing brick, belong to construction material production technical field, regenerated coarse aggregate, cement, water, silicon powder, thickener and water-reducing agent are mixed and made into regenerated concrete mixture, adobe is made in regenerated concrete mixture again, through maintenance, air dry, the brick body with hole is obtained, planting matrix then is perfused in the hole of brick body.The present invention is configured with regenerative bone material by concrete; with certain intensity; good ventilative, water penetration; green plants can be planted on brick face; combine roof protecting layer and greening; play the role of beautification function, not only played and saved construction material, insulation, but also can use plant Water storage and solve roof waterproof drainage problem.
Description
Technical field
The invention belongs to building material technical fields, in particular to concrete for plant growth and recycled concrete field.
Background technique
Roofing brick refers to that the brick being laid on building roofing, raw material are mostly mixed by clay, quartz sand etc.,
Brick body color is simple, and brick face is small in size, mostly uses the form of male and fomale(M&F), has the characteristics that anti-skidding, wear-resisting, repairing is convenient.In order to
The defect for overcoming Roofing brick color single, the table that people are acted on by having sticked on decoration again on the Roofing brick surface laid
Face decorative material, but need to consume the non-renewable resources such as a large amount of clays, do not have good ventilative, water penetration, it can not be very
Play function of heat insulation well.
Summary of the invention
For defect existing for the above existing Roofing brick, object of the present invention is to propose that one kind can be in its surface growing plant
The preparation method of vegetation type regeneration concrete Roofing brick.
Production method of the invention is: regenerated coarse aggregate, cement, water, silicon powder, thickener and water-reducing agent are mixed again
Growing concrete mixture, then adobe is made in regenerated concrete mixture, through maintenance, air dry, the brick body with hole is obtained, so
Planting matrix is perfused in the hole of brick body afterwards.
The present invention is configured with regenerative bone material by concrete, has certain intensity, good ventilative, water penetration, brick face
On can plant green plants, combine roof protecting layer and greening, play beautification function, both played save construction material,
The effect of insulation, and can use plant Water storage and solve roof waterproof drainage problem.
Further, the effective drainage porosity of the brick body with hole is 25~30%.Under the conditions of the porosity, institute
The vegetation type regeneration concrete Roofing brick intensity of preparation reaches 6.5~11.5MPa, and coefficient of permeability reaches 2.85~4.77mm/s,
PH value reaches 9.0 hereinafter, the herbaceous plant such as rye grass, Festuca Arundinacea, root system can be planted directly on regeneration concrete Roofing brick
Into in the hole of regeneration concrete and deeply beneath soil, green grass seeds growing way is preferable, and root system gos deep into regeneration concrete
In hole, construction material, the effect of afforesting and beautifying can be saved, and simple process, production cost are low.
The present invention sufficiently combines the advantages of restoring vegetation concrete and regeneration concrete, can solve: (1) economizing on resources, the energy；
Realize that the recycling of building waste recycles；(2) solve that regeneration concrete color is gloomy, stiff, coarse, ash cooling feeling, with
And people is allowed to feel separate naturally, lacking this problem of delight of life；(3) roof protecting layer and greening are combined, was both played
The effect of construction material, insulation is saved, and can use plant Water storage and solve roof waterproof draining problem, meets sea
Continuous city and green building specification.
The research and development of vegetation type regeneration concrete Roofing brick, it will to the research of domestic vegetation type regeneration concrete into
Row effectively supplement, important reference is provided for other correlative studys, and to China's conservation of nature ecological environment, it is raw to improve urban area
State environment, construction sponge city play an important role.
In addition, regenerated coarse aggregate of the present invention, cement, water and silicon powder mixing mass ratio be 1: 0.16~0.21:
0.06~0.08: 0.012~0.015.The design ratio be based on " saturation aggregate volume method " mixing proportion design method, with 25~
30% goal porosity carries out mix-design and determines.Because silicon powder contains a large amount of SiO2, can be with Ca in concrete (OH)2Reaction life
The hydrated calcium silicate of Cheng Xin is reduced Ca (OH)2Content is conducive to inside concrete hole pH reduction.Through a large number of experiments and practice
It obtains, when regenerated coarse aggregate and silicon powder use mass ratio as 1: 0.012~0.015, it is preferable to drop alkali effect.
The effect that the present invention adds thickener is the stickiness for improving slurry, enhances the education resistance of concrete, reduces bottom
The heavy slurry in portion, but it is excessive to add thickener, it is excessive to will lead to slurry stickiness, is not easy to wrap aggregate, influences the bonding between aggregate,
Cause intensity to decline, is obtained through a large number of experiments and practice, when thickener adds 1 ‰ that quality is cement and silicon powder quality sum,
The heavy slurry of concrete base can be significantly reduced, can be by the heavy slurry the area ratio control in bottom within 5%, while not reducing concrete anti-compression
Intensity.
The effect that the present invention adds water-reducing agent is to reduce water consumption, it is contemplated that added with silicon powder, silicon ash in the mix
Grain partial size is minimum, and large specific surface area, water requirement is larger, if not adding water-reducing agent, will lead to water consumption and significantly increases, lead to slurry
Fluidity is excessive, is easy to happen isolation, if addition water-reducing agent is excessive, it is smaller to will lead to slurry fluidity, is not easy to wrap aggregate,
The bonding between aggregate is influenced, intensity is caused to decline.It is obtained through a large number of experiments and practice, it is cement and silicon powder that water-reducing agent, which adds quality,
Quality sum 1% when, the fluidity of slurry of the present invention can wrap aggregate within the scope of 160~180mm, while not send out
Raw segregation phenomenon.
Since the effective drainage porosity of concrete for plant growth is directly proportional to aggregate maximum grade, compression strength and aggregate maximum grade
It is inversely proportional.And proved through a large number of experiments, the present invention use partial size for the regenerated coarse aggregate of 5~16mm can preferably and meanwhile meet have
Imitate the requirement of porosity and compression strength.
Further, in the regenerated coarse aggregate, partial size is the regenerated coarse aggregate that 5~10mm is 10~16mm with partial size
Mass ratio is 3: 17.It is studied through a large number of experiments, partial size of the present invention is 5~10mm and partial size be 10~16mm mass ratio is 3:
The voidage of 17 recycled aggregate can reach 40% ± 5%.The aggregate voidage range can guarantee prepare effective drainage porosity be 25~
30% regeneration concrete, while can guarantee the requirement of its compression strength.
To regenerated coarse aggregate cleaning, moisture content is dried to as 1~3wt%.Recycled aggregate of the present invention is because surface is with old
Hydrated cement paste body, water absorption rate is larger, after water cleans, moisture content up to 8~9wt%, for prevent mixing water amount error compared with
Greatly, it copes with the recycled aggregate and is dried to moisture content within the scope of 1~3wt%.
Since concrete mix of the present invention is due to no fine aggregate, workability is poor, is not easy uniformly to wrap up coarse aggregate.
Therefore, in concrete technology, the present invention first carries out the water of the one third of regenerated coarse aggregate and materials total Water in blender
Stirring, is sufficiently humidified so as to regenerated coarse aggregate surface；Then cement, silicon powder and thickener are put into again to be stirred, and make to regenerate thick bone
Expect that one layer of glue material is wrapped up on surface；It will be stirred in the water of residue 2/3rds and water-reducing agent investment blender again, regeneration be made
Concrete mixture.Stirring charging sequence of the present invention can make the full and uniform package coarse aggregate of slurry, promote properties of product.This
Invent it is described the water of the one third of regenerated coarse aggregate and materials total Water is first stirred into 15s in blender, make to regenerate thick bone
Material surface is sufficiently humidified so as to；Then cement, silicon powder and thickener are put into again and is stirred 30s, inhale regenerated coarse aggregate surface uniformly
Attached one layer of glue material；It will be stirred 10min in the water of residue 2/3rds and water-reducing agent investment blender again, slurry can be made abundant
Coarse aggregate is wrapped up, reinforces the bonding between aggregate, keeps concrete easily molded, intensity gets a promotion.
The planting matrix is made of the mixing of flyash, fertile soil, green vitriol and water, and the partial size humous is less than 1mm.
The purpose and effect of flyash are added in planting matrix: (1) fine coal ash component is mainly SiO2, can and concrete
Ca (OH) in hole2Reaction generates new hydrated calcium silicate, reduces Ca (OH)2Content reduces the pH value of planting matrix, is conducive to
Plant growth；(2) the necessary microelement of plant growth can be provided containing microelements such as nitrogen, potassium and phosphorus in flyash；(3)
The particle size range of fly ash grain is 0.5 ~ 300 μm, and Zhu Bi has porous structure, and particle is small, convenient for being poured in coagulation
In soil pores, guarantee vibration grouting effect；(4) flyash is industrial waste, and waste recycles, turns waste into wealth, play saving
Resource, sustainable development.
Purpose humous and effect are added in planting matrix: (1) it is full of nutrition, have various nutrition needed for plant
Element, potential fertilizer efficiency increase, and can gradually bring into play as the potting time increases its own fertilizer efficiency, be the bases of plant growth；
(2) partial size humous is less than 1mm, it is therefore an objective to guarantee that particle is smaller, convenient for being poured in concrete pore, guarantee vibration
Grouting effect.
The purpose and effect of green vitriol are added in planting matrix: main component ferrous sulfate can improve the alkali of planting matrix
Degree reduces pH value, is conducive to plant growth.
The flyash, fertile soil, green vitriol and water mixing mass ratio be 2: 1: 0.1: 1.
The planting matrix proportion design starting point: (1) through experimental study, the planting matrix slurry fluidity is up to 240
~300mm, particle is tiny, convenient for being poured in concrete pore, guarantees vibration grouting effect.(2) through experimental study, described kind
Phytyl matter slurry pH can reach 6.0 hereinafter, the pH value for being filled into 3d, 10d, 30d after concrete pore is respectively less than 9.0, can be full
The pH value requirement of sufficient plant growth.
Flyash, fertile soil, green vitriol and water are mixed into slurry, then pour into the slurry in shake table
On the brick body with hole on, until with hole brick body absorption slurry to be saturated, to planting matrix in concrete pore
After drying, vegetation type regeneration concrete Roofing brick is obtained.
Specific embodiment:
Embodiment 1
One, production technology:
1, recycled aggregate is prepared:
Discarded concrete is crushed using hydraulic cone formula crusher, is allowed to form recycled aggregate of waste concrete, is screened
Granular size is the recycled aggregate of waste concrete of 5~16mm out, is started the cleaning processing to the regenerated coarse aggregate filtered out, is cleaned
Good regenerated coarse aggregate is dried again, until moisture content is 1~3wt%.
Then regenerated coarse aggregate is subjected to sub-sieve, is divided into that partial size is 5~10mm regenerated coarse aggregate and partial size is 10~16mm
Regenerated coarse aggregate, it is spare.
2, one cubic metre of regeneration concrete is prepared:
Selected match ratio: the mixing mass ratio for giving birth to coarse aggregate, cement, water and silicon powder is 1: 0.16: 0.06: 0.012, and thickener adds
Adding quality is the 1 ‰ of cement and silicon powder quality sum, and water-reducing agent adds 1% that quality is cement and silicon powder quality sum.Partial size is
The mass ratio for the regenerated coarse aggregate that 5~10mm and partial size are 10~16mm is 3: 17.
The regenerated coarse aggregate 214.9kg that partial size is 5~10mm is weighed respectively, and partial size is the regenerated coarse aggregate of 10~16mm
1217.9kg, cement 227.8kg, water 83.8kg, silicon powder 17.1kg, thickener 0.24kg, water-reducing agent 2.45kg.
3, regenerated concrete mixture is prepared:
The water of regenerated coarse aggregate and one third is put into blender and is stirred, mixing time 15s makes regenerated coarse aggregate
Surface is sufficiently humidified so as to, then cement, silicon powder and thickener are put into blender and are stirred, mixing time 30s, keeps regeneration thick
Aggregate surface wraps up one layer of glue material, and finally remaining 2/3rds water and water-reducing agent are put into blender and are stirred, when stirring
Between be 10min, regenerated concrete mixture is made.
4, the molding of brick body:
Regenerated concrete mixture dosage is cast in stock mould, consolidates, then demoulds, obtains the brick of regeneration concrete Roofing brick
Regeneration concrete Roofing brick is finally put into curing pool and conserves 28d by body.
After tested, the brick body after conserving has hole, effective drainage porosity 29.1%.
5, slurry prepares:
Partial size is taken to be less than the fertile soil of 1mm.
By flyash, fertile soil, green vitriol and water in mass ratio 2: 1: 0.1: 1, it is stirred into slurry, is in the milk using vibration
Mode is filled into maintenance into the regeneration concrete Roofing brick hole of 28d, until brick body absorption reaches saturation, then is placed on interior
It spontaneously dries 3~5 days, the regeneration concrete Roofing brick after planting matrix in concrete pore is dry, after obtaining grouting.
Two, the product test result of the regeneration concrete Roofing brick after being in the milk:
(1) compressive strength test:
The survey of intensity is carried out to sample according to specification " GB/T 50081-2016 standard for test methods of mechanical properties of ordinary concrete "
It tests, uses side length for 150mm × 150mm × 150mm cube test specimen of the present invention, 6 test specimens are one group, with 6 test specimen measured values
Compression strength value of the arithmetic mean of instantaneous value as this group of test specimen, mean value calculation is accurate to 0.1MPa, when the maximum value of 6 test specimens
Or minimum value and the difference of average value be when being more than 20%, using the average value of intermediate four test specimens as the compression strength value of this group of test specimen.
Compressive strength test result see the table below shown.
Test specimen 28d compression strength contrast table
(2) effective drainage porosity measures:
Test specimen uses side length for 100mm × 100mm × 100mm cube specimen, and 6 test specimens of the present invention are one group, counts as the following formula
Calculation obtains its effective drainage porosity:
In formula:AFor test specimen effective porosity, %；M 1For the weight in water after saturation of impregnating in water and absorb water, kg；M 2For test specimen
It is placed in after drying under the conditions of (20 ± 2) DEG C, relative humidity (60 ± 5) % and weighs weight in its air, kg afterwards for 24 hours；VTo use
Calliper to measure simultaneously calculates resulting test specimen apparent volume, cm3；ρ wFor the density of water, kg/cm3。
Each test specimen effective drainage porosity measurement result contrast table
(3) coefficient of permeability measures:
By the coefficient of permeability of constant head method test block 28d.Test specimen of the present invention is Φ 10cm × 15cm cylindrical body, and 6 test specimens are
One group, the water by flowing through concrete sample in cooling water of units of measurement time calculates coefficient of permeability, calculation formula such as following formula:
In formula: kTConstant head coefficient of permeability, cm/s when for water temperature being T；HFor height of specimen, cm；hFor test specimen top surface constant water
Head, cm；QFor the water for flowing through test specimen in the testing time, cm；AFor the cross-sectional area of test specimen, cm2；Δ t is the time of test, s；For water in test temperature T with 15 DEG C when relative viscosity.
Each test specimen coefficient of permeability measurement result contrast table
(4) pH value measures:
By the pH of soil in " measurement of pH value in NY/T1377-2007 soil " method measurement vegetation type regeneration concrete hole
Value, the method is as follows: by the planting matrix in the present invention pour into maintenance into the test specimen hole of 28d, respectively after pouring into 3d, 10d,
30d takes out planting matrix in hole, weighs the air-dried sample 10g sieved by 2mm hole in the beaker of 50ml, and distilled water is added
25ml(soil liquor ratio is 1:2.5), 1min is stirred with blender, keeps grogs fully dispersed, carries out pH with acidometer after placement 30min
Value measurement.
Each test specimen pH value measurement result contrast table
Three, it applies:
Regeneration concrete Roofing brick surface layer after grouting is laid with soil moved in improve the original (fertile soil) and adds suitable water, in visitor with a thickness of 30mm
The herbaceous plant seeds such as rye grass, Festuca Arundinacea are sowed in soil layer, then earthing about 4mm, periodically watered, until germination, root
System is goed deep into regeneration concrete Roofing brick hole.
Embodiment 2
One, production technology:
1, recycled aggregate is prepared:
Discarded concrete is crushed using hydraulic cone formula crusher, is allowed to form recycled aggregate of waste concrete, is screened
Granular size is the recycled aggregate of waste concrete of 5~16mm out, is started the cleaning processing to the regenerated coarse aggregate filtered out, is cleaned
Good regenerated coarse aggregate is dried again, until moisture content is 1~3wt%.
Then regenerated coarse aggregate is subjected to sub-sieve, is divided into that partial size is 5~10mm regenerated coarse aggregate and partial size is 10~16mm
Regenerated coarse aggregate, it is spare.
2, one cubic metre of regeneration concrete is prepared:
Selected match ratio: regenerated coarse aggregate, cement, water and silicon powder mixing mass ratio be 1: 0.21: 0.08: 0.015, thickener
1 ‰ that quality is cement and silicon powder quality sum are added, water-reducing agent adds 1% that quality is cement and silicon powder quality sum.Partial size
Mass ratio for 5~10mm regenerated coarse aggregate for being 10~16mm with partial size is 3: 17.
Weighing partial size respectively is 5~10mm regenerated coarse aggregate 214.9kg, and partial size is 10~16mm regenerated coarse aggregate
1217.9kg, cement 294.5kg, water 107.7kg, silicon powder 22.2kg, thickener 0.32kg, water-reducing agent 3.17kg.
3, regenerated concrete mixture is prepared:
The water of regenerated coarse aggregate and one third is put into blender and is stirred, mixing time 15s makes regenerated coarse aggregate
Surface is sufficiently humidified so as to, then cement, silicon powder and thickener are put into blender and are stirred, mixing time 30s, keeps regeneration thick
Aggregate surface wraps up one layer of glue material, and finally remaining 2/3rds water and water-reducing agent are put into blender and are stirred, when stirring
Between be 10min, regenerated concrete mixture is made.
4, the molding of brick body:
Regenerated concrete mixture dosage is cast in stock mould, consolidates, then demoulds, obtains the brick of regeneration concrete Roofing brick
Regeneration concrete Roofing brick is finally put into curing pool and conserves 28d by body.
After tested, the brick body after conserving has hole, effective drainage porosity 25.3%.
5, slurry prepares:
Partial size is taken to be less than the fertile soil of 1mm.
By flyash, fertile soil, green vitriol and water in mass ratio 2: 1: 0.1: 1, it is stirred into slurry, is in the milk using vibration
Mode is filled into maintenance into the regeneration concrete Roofing brick hole of 28d, until brick body absorption reaches saturation, then is placed on interior
It spontaneously dries 3~5 days, the regeneration concrete Roofing brick after planting matrix in concrete pore is dry, after obtaining grouting.
Two, the product test result of the regeneration concrete Roofing brick after being in the milk:
(1) compressive strength test:
The survey of intensity is carried out to sample according to specification " GB/T 50081-2016 standard for test methods of mechanical properties of ordinary concrete "
It tests, uses side length for 150mm × 150mm × 150mm cube test specimen of the present invention, 6 test specimens are one group, with 6 test specimen measured values
Compression strength value of the arithmetic mean of instantaneous value as this group of test specimen, mean value calculation is accurate to 0.1MPa, when the maximum value of 6 test specimens
Or minimum value and the difference of average value be when being more than 20%, using the average value of intermediate four test specimens as the compression strength value of this group of test specimen.
Compressive strength test result see the table below shown.
Test specimen 28d compression strength contrast table
(2) effective drainage porosity measures:
Test specimen uses side length for 100mm × 100mm × 100mm cube specimen, and 6 test specimens of the present invention are one group, counts as the following formula
Calculation obtains its effective drainage porosity:
In formula:AFor test specimen effective porosity, %；M 1For the weight in water after saturation of impregnating in water and absorb water, kg；M 2For test specimen
It is placed in after drying under the conditions of (20 ± 2) DEG C, relative humidity (60 ± 5) % and weighs weight in its air, kg afterwards for 24 hours；VTo use
Calliper to measure simultaneously calculates resulting test specimen apparent volume, cm3；ρ wFor the density of water, kg/cm3。
Each test specimen effective drainage porosity measurement result contrast table
(3) coefficient of permeability measures:
By the coefficient of permeability of constant head method test block 28d.Test specimen of the present invention is Φ 10cm × 15cm cylindrical body, and 6 test specimens are
One group, the water by flowing through concrete sample in cooling water of units of measurement time calculates coefficient of permeability, calculation formula such as following formula:
In formula: kTConstant head coefficient of permeability, cm/s when for water temperature being T；HFor height of specimen, cm；hFor test specimen top surface constant water
Head, cm；QFor the water for flowing through test specimen in the testing time, cm；AFor the cross-sectional area of test specimen, cm2；Δ t is the time of test, s；For water in test temperature T with 15 DEG C when relative viscosity.
Each test specimen coefficient of permeability measurement result contrast table
(4) pH value measures:
By the pH of soil in " measurement of pH value in NY/T1377-2007 soil " method measurement vegetation type regeneration concrete hole
Value, the method is as follows: by the planting matrix in the present invention pour into maintenance into the test specimen hole of 28d, respectively after pouring into 3d, 10d,
30d takes out planting matrix in hole, weighs the air-dried sample 10g sieved by 2mm hole in the beaker of 50ml, and distilled water is added
25ml(soil liquor ratio is 1:2.5), 1min is stirred with blender, keeps grogs fully dispersed, carries out pH with acidometer after placement 30min
Value measurement.
Each test specimen pH value measurement result contrast table
Three, it applies:
Regeneration concrete Roofing brick surface layer after grouting is laid with soil moved in improve the original (fertile soil) and adds suitable water, in visitor with a thickness of 30mm
The herbaceous plant seeds such as rye grass, Festuca Arundinacea are sowed in soil layer, then earthing about 4mm, periodically watered, until germination, root
System is goed deep into regeneration concrete Roofing brick hole.
Key point of the present invention:
1. being dedicated to regeneration, novel, environmentally friendly, energy-conserving product research and development, concrete for plant growth and regeneration concrete are organically combined, ground
Send out vegetation type regeneration concrete Roofing brick new product.
2. the multi-factor analysis approach based on compression strength, four porosity, coefficient of permeability and pH value performance indicators is used, into
The vegetation type regeneration concrete Roofing brick of the mix-design of row vegetation type regeneration concrete, invention is able to satisfy compression strength, hole
Four gap rate, coefficient of permeability and pH value performance indicators.
3. addition is used in concrete to have the active silicon powder of alkali-activated carbonatite and perfusion ingredient for flyash, fertile soil, green
The planting matrix with drop alkali effect of alum achievees the purpose that control vegetation type regeneration concrete Roofing brick basicity, meets plantation
The pH value requirement of plant.
The invention has the benefit that the vegetation type regeneration concrete Roofing brick is by regenerated coarse aggregate, cement, water, silicon
Powder is made, and planting matrix is perfused in hole, and green herbaceous plant is planted on top, and root system is deep into hole.The present invention is to useless
It abandons concrete to be recycled, reduces production cost, while combine roof protecting layer and greening, play beautification
Effect is not only played the role of saving construction material, insulation, but also can use plant Water storage and solve roof waterproof draining
Problem.
Meet plant growth and requirement according to concrete for plant growth: 28d compression strength reaches 5~15MPa, active porosity
Rate reaches 21~30%, and coefficient of permeability reaches 1mm/s or more, and pH value reaches 6.0~9.0.It is obtained by a large number of experiments and practice,
The vegetation type regeneration concrete Roofing brick intensity of the method preparation reaches 6.5~11.5MPa, effective drainage porosity through the invention
Up to 25~30%, coefficient of permeability reaches 2.85~4.77mm/s, and pH value reaches 9.0 hereinafter, green grass seeds growing way is preferable, and root system is deep
Enter in regeneration concrete hole, reach design, requirement, construction material can be saved, play the role of afforesting and beautifying, protection ring
Border, and simple process, production cost are low.
Claims (10)
1. a kind of preparation method of vegetation type regeneration concrete Roofing brick, it is characterised in that by regenerated coarse aggregate, cement, water, silicon
Powder, thickener and water-reducing agent are mixed and made into regenerated concrete mixture, then adobe is made in regenerated concrete mixture, through supporting
Shield, air dry obtain the brick body with hole, planting matrix then are perfused in the hole of brick body.
2. the preparation method of vegetation type regeneration concrete Roofing brick according to claim 1, it is characterised in that described that there is hole
The effective drainage porosity of the brick body of gap is 25~30%.
3. the preparation method of vegetation type regeneration concrete Roofing brick according to claim 2, it is characterised in that the regeneration is thick
Aggregate, cement, water and silicon powder mixing mass ratio be 1: 0.16~0.21: 0.06~0.08: 0.012~0.015；Thickener is
Hydroxypropyl methyl cellulose ether, addition quality are the 1 ‰ of cement and silicon powder quality sum；Water-reducing agent is the efficient diminishing of polycarboxylic acids
Agent, addition quality are the 1% of cement and silicon powder quality sum.
4. the preparation method of vegetation type regeneration concrete Roofing brick according to claim 3, it is characterised in that the regeneration is thick
The partial size of aggregate is 5~16mm.
5. the preparation method of vegetation type regeneration concrete Roofing brick according to claim 4, it is characterised in that the regeneration is thick
In aggregate, the mass ratio for the regenerated coarse aggregate that partial size is 5~10mm and partial size is 10~16mm is 3: 17.
6. the preparation method of vegetation type regeneration concrete Roofing brick according to claim 1 or claim 2, it is characterised in that thick to regenerating
Aggregate cleaning is dried to moisture content as 1~3wt%.
7. the preparation method of vegetation type regeneration concrete Roofing brick according to claim 6, it is characterised in that will first regenerate thick
The water of the one third of aggregate and materials total Water is stirred in blender, is sufficiently humidified so as to regenerated coarse aggregate surface；So
It puts into cement, silicon powder and thickener again afterwards to be stirred, regenerated coarse aggregate surface is made to wrap up one layer of glue material；Again by residue three/
It is stirred in two water and water-reducing agent investment blender, regenerated concrete mixture is made.
8. the preparation method of vegetation type regeneration concrete Roofing brick according to claim 1 or claim 2, it is characterised in that the plantation
Matrix is made of the mixing of flyash, fertile soil, green vitriol and water, and the partial size humous is less than 1mm.
9. the preparation method of vegetation type regeneration concrete Roofing brick according to claim 8, it is characterised in that the flyash,
The mixing mass ratio of fertile soil, green vitriol and water is 2: 1: 0.1: 1.
10. the preparation method of vegetation type regeneration concrete Roofing brick according to claim 9, it is characterised in that by flyash,
Fertile soil, green vitriol and water are mixed into slurry, then the slurry is poured into the brick with hole on shake table
On body, until the absorption slurry of the brick body with hole after planting matrix in concrete pore is dry, obtains vegetation type to being saturated
Regeneration concrete Roofing brick.
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Application publication date: 20190412 |