CN105294039B - A kind of steel slag plant-growing concrete - Google Patents
A kind of steel slag plant-growing concrete Download PDFInfo
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- CN105294039B CN105294039B CN201510871093.XA CN201510871093A CN105294039B CN 105294039 B CN105294039 B CN 105294039B CN 201510871093 A CN201510871093 A CN 201510871093A CN 105294039 B CN105294039 B CN 105294039B
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Abstract
The invention provides a kind of steel slag plant-growing concrete, its composition is by weight percentage：Including slag aggregate, compound steel-making slag powder, reinforcing agent, each raw material proportioning is calculated as with mass fraction：75 83 parts of slag aggregate, is combined 15 24.5 parts of steel-making slag powder, 0.5 2 parts of reinforcing agent, and its preparation method is：Slag aggregate is uniformly mixed in proportion with compound steel-making slag powder, reinforcing agent, add water production steel slag plant-growing concrete.The present invention utilizes the standby concrete for plant growth intensity height of prepared from steel slag, porosity greatly and acid or alkali environment disclosure satisfy that the demand of plant growth.
Description
Technical field
The invention belongs to eco-concrete field, a kind of steel slag plant-growing concrete and preparation method thereof is related generally to.
Background technology
Advocated actively under green living, the life idea of energy-conserving and environment-protective, China not only rests on over now only sees
The structural behaviour of loaded concrete, also gradually starts to develop to the functional concrete such as environment-friendly, resources conservation direction.Start from Japan
Concrete for plant growth both have concrete function, again have environment regulatory function, realize the demand of ecology.Plant raw coagulation
Soil is used for both sides of the road, highway bank protection and the central partition in city, the position such as waterside bank protection, roof parking lot, can be with
Increase surface of concrete permeable breathable, improve damp and hot exchange capacity, reduce surface of concrete temperature, increase city
Vert space, reduce urban heat land effect, adjust people life mood, the function with absorption of noise and dust, to city
The ecological balance of city's weather also functions to positive role, can improve human settlement, and its social benefit and ecological benefits are very prominent.
In the prior art, concrete for plant growth can be divided into hole type, porous continuous type, hole type multilayer from construction
3 kinds of forms such as structure.Hole type and hole type sandwich construction concrete for plant growth are not the concrete for plant growth of stricti jurise.And it is many
Crucial index is porosity in the continuous type concrete for plant growth of hole, and there are some researches prove concrete average pore size plants natural disposition energy to it
Influence is notable, and average grain diameter is too small to cause root system of plant can not absorb enough nutriments, so as to influence the extension of root system
Growth, while pH value can be made too high, is unfavorable for plant growth；Average grain diameter is too big, concrete poor water retention property, therefore, average hole
Footpath is moderate.
Existing research finds that the transformation of alkali environment in celluar concrete hole is the technology development of restriction concrete for plant growth
It is crucial.In Japan, the binder materials for concrete for plant growth is low alkalinity blast furnace B, c-type cement resource, with the cement of the type
The celluar concrete made, its surface pH value is adapted to plant growth in 8-9 or so.And China lacks low alkalinity cement resource,
General to prepare celluar concrete using Portland cement, interstitial water environment is not engineered, and its pH value is up to 12.5-
13.5, plant growth is influenceed, this is also one of bottleneck of this technology.Basicity in porous concrete for plant growth hole is transformed mainly should
From the aspect of following three：(1) basicity of binder materials is reduced；(2) use in acid soil and addition acidulous material and dissolution
Alkali, since reduce hole in basicity value；(3) by being surface-treated to quiet slurry, isolation alkaloids and filling soil
Contact, it is ensured that the growth of plant.
However, in existing technology, with acid soil and addition acidulous material and dissolution alkali, since reduce hole
Interior basicity value, although can reduce the pore alkalinity of celluar concrete to a certain degree, but reduction of its volume to intensity is made
With obvious, FeSO4If the volume Deng acidic materials should not be excessive.With the pore water environmental pH of the eco-concrete for processing of sealing with wax
Only reduction 0.5-1, and on the whole complex procedures and cost is higher, industrial prospect allows of no optimist.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of steel slag plant-growing coagulation for above-mentioned the deficiencies in the prior art
Soil and preparation method thereof, using the standby concrete for plant growth intensity of prepared from steel slag is high, porosity is big and pH value is in 8-10, disclosure satisfy that plant
The demand of thing growth.
The technical scheme that the present invention is used by solution the problem of set forth above for：
A kind of steel slag plant-growing concrete, its raw material includes slag aggregate, compound steel-making slag powder, reinforcing agent, each raw material proportioning with
Mass fraction is calculated as：75-83 parts of slag aggregate, is combined 15-24.5 parts of steel-making slag powder, 0.5-2 parts of reinforcing agent.
Further, colouring agent is also included in the steel slag plant-growing concrete, the addition of colouring agent accounts for the slag and planted
The 0-3% of growing concrete gross mass.Wherein, the one kind of the colouring agent in iron oxide red, iron oxide yellow, iron oxide black etc.
Or it is several.The purpose of addition colouring agent is in order to change the color of concrete, to make its color coordination with surrounding environment.
By such scheme, described slag aggregate is granularity 2.36-4.75mm, and free calcium oxide content is less than 2%, containing mud
Slag thin aggregate of the amount less than 3%, by being converter slag after the processing of the process stabilizingizations such as hot application, eliminates the free of slag
The unstable materials such as calcium oxide, after the process processing such as broken, magnetic separation, screening, roller washing obtained by.
By such scheme, the fineness standard that described compound steel-making slag powder is is：Specific surface area is more than 300 m2/kg.Specifically
Ground, described compound steel-making slag powder is mixed including steel slag tailings powder, clinker and granulated blast-furnace slag powders.More specifically,
Each component is by mass percentage in described compound steel-making slag powder：30%~40% steel slag tailings powder, 10%~30% clinker
With 30%~60% granulated blast-furnace slag powders.Wherein, described steel slag tailings powder is to be carried out by slag after stabilization processes again through broken
What the processing such as broken, magnetic separation, screening was obtained, the content of its free calcium oxide is less than 3%, and metal Ferrum content is less than 3%,；The cement
Clinker main chemical compositions are calcium oxide, silica and a small amount of aluminum oxide and iron oxide, four kinds of Contents of Main Components summations
More than 96.5%；The byproduct when ground granulated blast furnace slag is blast furnace ironmaking, its water content is not more than 0.8%, specific surface area
Not less than 350m2/ kg, activity index is not less than 60% within 7 days.
By such scheme, described reinforcing agent includes manganese slag, Bayer red mud, flyash, gypsum and mixed, wherein gypsum
For dihydrate gypsum or industrial gypsum.More specifically, each component is according to the mass fraction in the reinforcing agent：1~6 part of manganese slag,
1~2 part of 1~5 part of Bayer red mud, 1~7 part of flyash, dihydrate gypsum or industrial gypsum.Wherein, the main chemical compositions of manganese slag
For：SiO2、Al2O3、Fe2O3, CaO and SO3, SO3Content is not more than 20%；The chemical composition of the Bayer red mud is with quality percentage
Than being calculated as：SiO2：6-10%、Al2O3：13-24%、Fe2O3：24-38%、CaO：15-29%、Na2O：0.5-3.5%.
The preparation method of steel slag plant-growing concrete of the present invention is：By slag aggregate and compound steel-making slag powder, reinforcing agent
It is uniformly mixed in proportion, according to compound steel-making slag powder quality（0.38-0.56）Extraordinarily aquatic production steel slag plant-growing concrete.
Compared with prior art, the present invention has the beneficial effect that：
First, plant-growing type eco-concrete of the invention pours the continuous hole afterwards with connection, the similar popped rice of structure
Sugared shape, with good compression strength, durability, workability and porosity, root system of plant can be deep into basic unit, both reach side
Slope reinforces the double effectses for reaching ecological afforestation again.Compared with normal concrete, in drainage（Water penetration）, stability, anti-wash
All there is superiority in terms of pick and flow and failure property, landscape and improvement natural environment ability.
Second, due to the porous of slag, it is ensured that a kind of present invention steel slag ecological concrete for plant growth for providing is good
Water permeability；The alkalescent of compound steel-making slag powder effectively improves basicity in concrete for plant growth hole, and the pH value of celluar concrete exists
10 or so such low alkalinities, are conducive to the growth of plant and organism in water；The gelling property of slag and granulated blast-furnace slag so that
Steel slag ecological concrete for plant growth has enough intensity.In a word, present invention slag prepares the raw coagulation of ecological plant as main material
Soil has good performance indications.
3rd, the present invention can improve the utilization rate of slag, reduction life when producing concrete for plant growth material using slag
Cost is produced, and because compound steel-making slag powder includes steel slag tailings powder and granulated blast-furnace slag powders, so as to sharp to large extent
With steel slag tailings, granulated blast-furnace slag powders etc., these are difficult to the discarded object that comprehensively utilizes as the part material of binder materials,
So that these wastes are recycled, the production cost of generation binder materials is further reduced.
Embodiment
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention is not
It is limited only to the following examples.
In following embodiments, described slag aggregate is converter slag after the processing of the process stabilizingizations such as hot application, is passed through
Gained granularity is 2.36-4.75mm, free calcium oxide content after the process processing such as broken, magnetic separation, screening, roller washing<2%, contain
Mud amount<3% slag thin aggregate.
In following embodiments, in the compound steel-making slag powder used, the steel slag tailings powder is to carry out stabilisation by slag
Obtained again through the processing such as broken, magnetic separation, screening after reason, the content of its free calcium oxide is less than 3%（Mass content）, metallic iron
Content is less than 3%（Mass content）；The clinker is main by SiO2, CaO and Al2O3、Fe2O3Composition, four kinds of component contents are total
With more than 96.5%（Mass content）；The byproduct when ground granulated blast furnace slag is blast furnace ironmaking, its water content is not more than
0.8%（Mass content）, specific surface area is not less than 350m2/ kg, activity index is not less than 60% within 7 days.
In following embodiments, the reinforcing agent used is mixed by manganese slag, Bayer red mud, flyash, gypsum, wherein stone
Cream is dihydrate gypsum or industrial gypsum；Each component is according to the mass fraction in the reinforcing agent：1-6 parts of manganese slag, Bayer red mud
1-2 parts of 1-5 parts, 1-7 parts of flyash, dihydrate gypsum or industrial gypsum.Wherein, the main chemical compositions of the manganese slag are：SiO2、
Al2O3、Fe2O3, CaO and SO3, SO3Content is not more than 20%（Mass content）；The chemical composition of the Bayer red mud is with quality hundred
Ratio is divided to be calculated as：SiO2：6-10%、Al2O3：13-24%、Fe2O3：24-38%、CaO：15-29%、Na2O：0.5-3.5%.
Embodiment 1
A kind of steel slag plant-growing concrete, its raw material includes slag aggregate, compound steel-making slag powder, reinforcing agent, colouring agent, each raw material
Match and be by percentage to the quality：Slag aggregate 75%, compound steel-making slag powder 24%, reinforcing agent 0.5%, iron oxide red 0.5%, wherein,
The fineness standard that described compound steel-making slag powder is is that specific surface area is 320m2/ kg, described compound steel-making slag powder includes in mass ratio
30% steel slag tailings powder, 20% clinker and 50% granulated blast-furnace slag powders mix, and the reinforcing agent specifically comprises manganese
1 part of slag, 5 parts of Bayer red mud, 2 parts of flyash, 1 part of dihydrate gypsum.
The production method of above-mentioned steel slag plant-growing concrete, concrete processing procedure is as follows：By slag aggregate and compound steel-making slag powder,
Reinforcing agent, colouring agent are well mixed, and add water the ecological plant life of aftershaping production that stirs again according to compound steel-making slag powder quality 0.38
Celluar concrete.
The performance detection that the present invention is carried out to steel slag plant-growing concrete prepared in embodiment, including compression strength,
Porosity, planting experiment result, specific detection method are as follows：
1）Compression strength
Sample dimensions are 150mm × 150mm × 150mm, according to GB50081-2002《Normal concrete mechanical property test
Method standard》, form removal after shaping, natural curing 7d, detects its compression strength on pressure resisting machine at the standard conditions.It is each to implement
Example takes 6 sample detections, takes the compression strength that its average value is the celluar concrete.
In embodiment 1, the compression strength of prepared steel slag plant-growing concrete natural curing 7d standard cube test block
For 22.15MPa, more than the intensity that general celluar concrete needs natural curing 28d, the demand of plant growth disclosure satisfy that.
2）Porosity
Because the concrete for plant growth surface pore is more, therefore the measure of its porosity is carried out using any special measures
, comprise the following steps that：Natural curing 7d is first determined, volume is the aerial quality G of V test specimens0, it is then determined again in water
In quality G1.By formula ψ=(G0-G1)/V tries to achieve the porosity ψ of each test specimen.Each embodiment takes 6 test specimen detections, takes it
Average value is the porosity of the porous concrete for plant growth.
In embodiment 1, according to testing result, porosity is 26.2%, disclosure satisfy that the demand of plant growth.
3）Planting experiment result
50mm loess and a small amount of compost are filled out in bottom, is broadcast using tall fescue seed on soil, its upper is above-mentioned
Concrete layer, thickness is 40mm, waters once conserved daily, after seven days, observes the developmental state of seed.
In the present embodiment 1, Festuca Arundinacea plant, which pricks, absorbs nutrient in soil, and the small grass of green is grown through concrete layer,
Understand that concrete for plant growth prepared by the present invention disclosure satisfy that plant growth requirement, pH value is in 8-10.
Embodiment 2
A kind of steel slag plant-growing concrete, its raw material includes slag aggregate, compound steel-making slag powder, reinforcing agent, colouring agent, each raw material
Match and be by percentage to the quality：Slag aggregate 83%, compound steel-making slag powder 15%, reinforcing agent 0.5%, iron oxide yellow 1.5%, wherein,
The fineness standard that described compound steel-making slag powder is is that specific surface area is 350m2/ kg, described compound steel-making slag powder includes in mass ratio
32% steel slag tailings powder, 20% clinker and 48% granulated blast-furnace slag powders are mixed, the concrete composition manganese slag of the reinforcing agent
2 parts, 4 parts of Bayer red mud, 1 part of flyash, industrial gypsum（Desulfurated plaster）2 parts.
The production method of above-mentioned steel slag plant-growing concrete, concrete processing procedure is as follows：By slag aggregate and compound steel-making slag powder,
Reinforcing agent, colouring agent are well mixed, and add water the ecological plant life of aftershaping production that stirs again according to compound steel-making slag powder quality 0.40
Celluar concrete.
Performance detection：
1）Compression strength：In the present embodiment, prepared steel slag plant-growing concrete natural curing 7d standard cube is tried
The compression strength of block is 21.86MPa, and having exceeded general celluar concrete needs natural curing 28d intensity, disclosure satisfy that plant
The demand of growth.
2）Porosity：In the present embodiment, according to testing result, porosity is 24.9%, disclosure satisfy that the need of plant growth
Ask.
3）Planting experiment result：In the present embodiment, 50mm loess and a small amount of compost are filled out in bottom, using paspalum notatum
Seed is broadcast on soil, the above-mentioned concrete layer of its upper, and thickness is 40mm, waters once conserved daily, after seven days, hundred happinesses
Careless plant, which pricks, absorbs nutrient in soil, the small grass of green is grown through concrete layer.
Embodiment 3
A kind of steel slag plant-growing concrete, its raw material includes slag aggregate, compound steel-making slag powder, reinforcing agent, colouring agent, each raw material
Match and be by percentage to the quality：Slag aggregate 82%, compound steel-making slag powder 15%, reinforcing agent 1.5%, iron oxide red 1.5%, wherein,
The fineness standard that described compound steel-making slag powder is is that specific surface area is more than 380m2/ kg, described compound steel-making slag powder is wrapped in mass ratio
Include 35% steel slag tailings powder, 12% clinker and 53% granulated blast-furnace slag powders to mix, the concrete composition manganese of the reinforcing agent
4 parts of slag, 3 parts of Bayer red mud, 2 parts of flyash, 2 parts of dihydrate gypsum.
The production method of above-mentioned steel slag plant-growing concrete, concrete processing procedure is as follows：By slag aggregate and compound steel-making slag powder,
Reinforcing agent, colouring agent are well mixed, and add water the ecological plant life of aftershaping production that stirs again according to compound steel-making slag powder quality 0.44
Celluar concrete.
Performance detection：
1）Compression strength：In the present embodiment, prepared steel slag plant-growing concrete natural curing 7d standard cube is tried
The compression strength of block is 22.65MPa, and having exceeded general celluar concrete needs natural curing 28d intensity, disclosure satisfy that plant
The demand of growth.
2）Porosity：In the present embodiment, according to testing result, porosity is 25.6%, disclosure satisfy that the need of plant growth
Ask.
3）Planting experiment result：In the present embodiment, 50mm loess and a small amount of compost are filled out in bottom, using dog tooth
Root seed is broadcast on soil, the above-mentioned concrete layer of its upper, and thickness is 40mm, waters once conserved daily, after seven days, dog
Root of the tooth plant, which pricks, absorbs nutrient in soil, the small grass of green is grown through concrete layer.
Embodiment 4
A kind of steel slag plant-growing concrete, its raw material includes slag aggregate, compound steel-making slag powder, reinforcing agent, each raw material proportioning with
Mass percent is calculated as：Slag aggregate 81%, compound steel-making slag powder 18%, reinforcing agent 1%, wherein, it is thin that described compound steel-making slag powder is
Scale standard is more than 370m for specific surface area2/ kg, described compound steel-making slag powder includes 33% steel slag tailings powder, 30% water in mass ratio
Mud clinker and 37% granulated blast-furnace slag powders are mixed, 5 parts of 3 parts of concrete composition manganese slag, Bayer red mud, the powder of the reinforcing agent
1 part of coal ash, industrial gypsum（Ardealite）2 parts.
The production method of above-mentioned steel slag plant-growing concrete, concrete processing procedure is as follows：By slag aggregate and compound steel-making slag powder,
Reinforcing agent is well mixed, and add water the raw porous coagulation of the ecological plant of aftershaping production that stirs again according to compound steel-making slag powder quality 0.48
Soil.
Performance detection：
1）Compression strength：In the present embodiment, the compression strength of Concrete in Natural maintenance 7d standard cube test block is
More than 23.24MPa, having exceeded general celluar concrete needs natural curing 28d intensity, disclosure satisfy that the need of plant growth
Ask.
2）Porosity：In the present embodiment, according to testing result, porosity is 23.4%, disclosure satisfy that the need of plant growth
Ask.
3）Planting experiment result：50mm loess and a small amount of compost are filled out in bottom, is broadcast using ryegrass seed in soil
On, the above-mentioned concrete layer of its upper, thickness is 40mm, waters once conserved daily, after seven days, and rye grass plant pricks
Nutrient is absorbed in soil, the small grass of green is grown through concrete layer.
Embodiment 5
A kind of steel slag plant-growing concrete, its raw material includes slag aggregate, compound steel-making slag powder, reinforcing agent, each raw material proportioning with
Mass percent is calculated as：Slag aggregate 77%, compound steel-making slag powder 22%, reinforcing agent 1%, wherein, it is thin that described compound steel-making slag powder is
Scale standard is more than 405m for specific surface area2/ kg, described compound steel-making slag powder includes 37% steel slag tailings powder, 13% water in mass ratio
Mud clinker and 50% granulated blast-furnace slag powders are mixed, 1 part of 5 parts of concrete composition manganese slag, Bayer red mud, the powder of the reinforcing agent
2 parts of coal ash, 2 parts of dihydrate gypsum.
The production method of above-mentioned steel slag plant-growing concrete, concrete processing procedure is as follows：By slag aggregate and compound steel-making slag powder,
Reinforcing agent is well mixed, and add water the raw porous coagulation of the ecological plant of aftershaping production that stirs again according to compound steel-making slag powder quality 0.53
Soil.
Performance detection：
1）Compression strength：In the present embodiment, the compression strength of Concrete in Natural maintenance 7d standard cube test block is
20.52MPa, equivalent to the intensity that general celluar concrete needs natural curing 28d, disclosure satisfy that the demand of plant growth.
2）Porosity：In the present embodiment, according to testing result, porosity is 26.1%, disclosure satisfy that the need of plant growth
Ask.
3）Planting experiment result：In the present embodiment, 50mm loess and a small amount of compost are filled out in bottom, using green bristlegrass
Seed is broadcast on soil, the above-mentioned concrete layer of its upper, and thickness is 40mm, waters once conserved daily, after seven days, dog tail
Careless plant, which pricks, absorbs nutrient in soil, the small grass of green is grown through concrete layer.
Embodiment 6
A kind of steel slag plant-growing concrete, its raw material includes slag aggregate, compound steel-making slag powder, reinforcing agent, colouring agent, each raw material
Match and be by percentage to the quality：Slag aggregate 76%, compound steel-making slag powder 22%, reinforcing agent 1%, iron oxide red 1%, wherein, it is described
The compound steel-making slag powder fineness standard that is be that specific surface area is more than 415m2/ kg, described compound steel-making slag powder includes in mass ratio
30% steel slag tailings powder, 30% clinker and 40% granulated blast-furnace slag powders are mixed, the concrete composition manganese slag of the reinforcing agent
6 parts, 2 parts of Bayer red mud, 1 part of flyash, industrial gypsum（Fluorgypsum）1 part.
The production method of above-mentioned steel slag plant-growing concrete, concrete processing procedure is as follows：By slag aggregate and compound steel-making slag powder,
Reinforcing agent, colouring agent are well mixed, and add water the ecological plant life of aftershaping production that stirs again according to compound steel-making slag powder quality 0.56
Celluar concrete.
Performance detection：
1）Compression strength：In the present embodiment, the compression strength of Concrete in Natural maintenance 7d standard cube test block is
More than 24.74MPa, more than the intensity that general celluar concrete needs natural curing 28d, disclosure satisfy that the demand of plant growth.
2）Porosity：In the present embodiment, testing result, porosity is 24.1%, disclosure satisfy that the demand of plant growth.
3）Planting experiment result：In the present embodiment, 50mm loess and a small amount of compost are filled out in bottom, using Korea lawn grass
Seed is broadcast on soil, the above-mentioned concrete layer of its upper, and thickness is 40mm, waters once conserved daily, after seven days, knot thread
Careless plant, which pricks, absorbs nutrient in soil, the small grass of green is grown through concrete layer.
From the embodiment of the present invention, not only space is big but also intensity can reach high value for steel slag plant-growing concrete, main
Wanting reason is, hot splashing steel slag balling-up is used as aggregate, and the shape of its particle is better than stone, and size is in certain scope,
It ensure that concrete has preferable porosity and intensity after shaping, and pH ensures the acid or alkali environment of plant growth, energy in 8-10
The demand of plant growth is enough met, and makes root system riotous growth in concrete.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (7)
1. a kind of steel slag plant-growing concrete, it is characterised in that its raw material includes slag aggregate, compound steel-making slag powder, reinforcing agent, respectively
Raw material proportioning is calculated as with mass fraction：75-83 parts of slag aggregate, is combined 15-24.5 parts of steel-making slag powder, 0.5-2 parts of reinforcing agent；It is described
Slag aggregate be granularity 2.36-4.75mm, free calcium oxide content be less than 2%, clay content be less than 3% slag thin aggregate；Institute
Each component is by mass percentage in the compound steel-making slag powder stated：30%~40% steel slag tailings powder, 10%~30% clinker and
30%~60% granulated blast-furnace slag powders；Described reinforcing agent includes manganese slag, Bayer red mud, flyash, gypsum and mixed, wherein
Gypsum is dihydrate gypsum or industrial gypsum.
2. a kind of steel slag plant-growing concrete according to claim 1, it is characterised in that in the steel slag plant-growing concrete also
Including colouring agent, the addition of colouring agent accounts for the 0-3% of the steel slag plant-growing concrete gross mass.
3. a kind of steel slag plant-growing concrete according to claim 2, it is characterised in that the colouring agent be selected from iron oxide red,
One or more in iron oxide yellow, iron oxide black.
4. a kind of steel slag plant-growing concrete according to claim 1, it is characterised in that it is thin that described compound steel-making slag powder is
Scale standard is：Specific surface area is more than 300 m2/ kg, described compound steel-making slag powder includes steel slag tailings powder, clinker and blast furnace
Granulated slag powder is mixed.
5. a kind of steel slag plant-growing concrete according to claim 1, it is characterised in that the trip in described steel slag tailings powder
Content from calcium oxide is less than 3%, and metal Ferrum content is less than 3%；The water content of the granulated blast-furnace slag is not more than 0.8%, compares table
Area is not less than 350m2/ kg, activity index is not less than 60% within 7 days；SiO in the clinker2、Al2O3, CaO and Fe2O3Matter
Measure content summation and be more than 96.5%.
6. a kind of steel slag plant-growing concrete according to claim 1, it is characterised in that each component presses matter in the reinforcing agent
Amount number is calculated as：1~2 part of 1~6 part of manganese slag, 1~5 part of Bayer red mud, 1~7 part of flyash, dihydrate gypsum or industrial gypsum；Its
In, SO in the manganese slag3Content is not more than 20%, and the chemical composition of the Bayer red mud is by percentage to the quality：SiO2：6-
10%、Al2O3：13-24%、Fe2O3：24-38%、CaO：15-29%、Na2O：0.5-3.5%.
7. a kind of preparation method of steel slag plant-growing concrete according to claim 1, it is characterised in that by slag aggregate with
Compound steel-making slag powder, reinforcing agent are uniformly mixed in proportion, according to the extraordinarily aquatic production steel of the 0.38-0.56 of compound steel-making slag powder quality
Slag concrete for plant growth.
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| CN107459368A (en) * | 2017-07-21 | 2017-12-12 | 常州易能科技有限公司 | Haydite foam concrete for plant growth and preparation method thereof |
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